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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1552. Отображено 100.
21-02-2013 дата публикации

Face miller and use thereof

Номер: US20130045059A1
Автор: Lutfi Bozkurt
Принадлежит: Guehring KG

The face miller is equipped with a plurality of plate-shaped hard material cutting inserts that are distributed over the circumference. The hard material cutting inserts are located on a graduated circle in pockets of a blade carrier and have a main cutting edge, which is adjusted at a cutting edge angle smaller than 90° relative to the working plane of the miller. In order to ensure maximum machining performance at a good service life, the cutting edge angle is selected to range between 10° and 30°, wherein the main cutting edge at the same time has a slightly convex design. The main cutting edge transitions into the secondary cutting edge via a transition radius having a value that ranges between 0.5 and 1.5 mm. The axial rake angle ranges between 20 and 30°. According to an advantageous further development, the radial rake angle ranges between −6° and −10°.

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Номер записи: 1
28-11-2013 дата публикации

Rotary cutter

Номер: US20130315681A1
Автор: Vladimir Volokh
Принадлежит: Individual

The present invention relates to a rotary cutting tool consisting of a shank and at least one cutting section comprising a plurality of cutting teeth, the cutting section being conceptionaly and functionally divided into several sub-sections along the tool axis (“zones” for brevity), wherein each zone has its own core form and its own cutting edges, its own teeth land form and its own zone cutting length, these being selected according to the perceived task for which each zone of the tool is to be optimized.

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Номер записи: 2
07-01-2016 дата публикации

ROTARY MILLING TOOL

Номер: US20160001382A1
Автор: Sato Nozomu, TAKAHASHI Shoichi
Принадлежит: UNION TOOL CO.

Provided is a rotary milling tool capable of finishing a milled surface to produce a smooth and glossy surface. A rotary milling tool in which a plurality of chip discharge grooves () are provided to the outer periphery of a tip part of a tool body (), the plurality of chip discharge grooves () extending from the tool tip toward the tool base, and bottom blades () are provided to an intersection ridge part at the intersection of a rake surface () of the chip discharge grooves () and a tip flank surface () of the tool body (), each of the bottom blades () being formed integrally with the tool body (), wherein a convex edge () that is convex toward a tool-axis-direction tip is formed on at least one of the bottom blades (), and the convex edge () is formed by the connection of a plurality of linear edges that are substantially linear. 1. A rotary milling tool in which a plurality of chip discharge grooves are provided to the outer periphery of a tip part of a tool body , the plurality of chip discharge grooves extending from the tool tip toward the tool base , and bottom blades are provided to an intersection ridge part at the intersection of a rake surface of the chip discharge grooves and a tip flank surface of the tool body , each of the bottom blades being formed integrally with the tool body , wherein the rotary milling tool is characterized in that a convex edge that is convex toward a tool-axis-direction tip is formed on at least one of the bottom blades , and the convex edge is formed by the connection of a plurality of linear edges that are substantially linear.2. A rotary milling tool according to claim 1 , wherein the rotary milling tool is characterized in that the convex edge is obtusely formed by the connection of at least a linear edge gradually inclined upward toward the tool tip claim 1 , the linear edge extending from the outer periphery of the tool toward the center of the tool claim 1 , and a linear edge gradually inclined downward toward the tool ...

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Номер записи: 3
04-01-2018 дата публикации

CUTTING TOOL WITH ENHANCED CHIP EVACUATION CAPABILITY AND METHOD OF MAKING SAME

Номер: US20180001398A1
Автор: Boulakhov Sergei Vladimir, Sharivker Leonid Boris
Принадлежит:

A milling cutter having a shank and a cutting head attached to the shank. The cutting head has a plurality of helical teeth, each tooth including a cutting tip, a leading face and a rear face. A flute is defined between the leading face of a trailing tooth, and a rear face of an immediately preceding tooth. A gully of the flute is generally W-shaped in cross section to provide effective chip evacuation. A method for manufacturing the milling cutter with the W-shaped gully of the flute using a split path grinding process is also disclosed. 112-. (canceled)13. A method of manufacturing a milling cutter , said method comprising:providing a grinding wheel which has a predetermined profile and is rotatable about an axis different from a longitudinal axis of the milling cutter;using the grinding wheel to grind a helical flute into an outer periphery of a cutter blank, via at least a first grinding path and a subsequent, second grinding path;wherein, via said first grinding path, the grinding wheel produces a leading face of a first tooth, and a first flute base;wherein, via said second grinding path, the grinding wheel produces a second flute base and thereby imparts a generally W-shaped cross-section to the helical flute.14. The method according to claim 13 , wherein the first grinding path and the second grinding path are calculated separately from one another claim 13 , using different sets of one or more input values.15. The method according to wherein claim 13 , via said second grinding path claim 13 , the grinding wheel produces a flute back claim 13 , the flute back comprising a rear face of a second tooth.16. The method according to wherein claim 13 , via said first grinding path claim 13 , the grinding wheel produces a positive or negative radial rake angle on the leading face of the first tooth.17. The method according to wherein claim 16 , in said first grinding operation claim 16 , the grinding wheel simultaneously produces:the positive or negative radial rake ...

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Номер записи: 4
02-01-2020 дата публикации

MILLING TOOL

Номер: US20200001379A1
Автор: NETZER Stefan
Принадлежит: HPTec GmbH

A milling tool for milling and/or drilling workpieces, which is rotatable in a direction of rotation about an axis of rotation during machining, comprising a milling head, which has a radius cutter that describes a portion in the form of a circular arc such that the milling head takes up a partially spherical, in particular a hemispherical volume, in rotation, a main body, which has a main feature in the form of a helical recess with respect to the rotation volume taken up by the rotating milling tool in order to form a conveying helix, wherein the main feature is provided with a cutting edge as main cutter, wherein the main feature has a smooth lateral surface arranged on the side facing away from the main cutter in the direction of rotation. 1. A milling tool for milling and/or drilling workpieces , which is rotatable in a direction of rotation about an axis of rotation during machining , comprising:a milling head, which has a radius cutter in the form of a circular arc such that the milling head takes up a partially spherical volume in rotation; anda main body, which has a main feature in the form of a helical recess with respect to the volume taken up by the rotating milling tool in order to form a conveying helix, wherein the main feature is provided with a cutting edge as a main cutter,wherein the main feature has a smooth lateral surface arranged on the side facing away from the main cutter in the direction of rotation.2. The milling tool as claimed in claim 1 , wherein the radius cutter transitions into the main cutter.3. The milling tool as claimed in claim 1 , wherein the lateral surface extends parallel to the axis of rotation claim 1 , and/or wherein the main cutter extends at least partially on the lateral surface of a cylinder.4. The milling tool as claimed in claim 1 , wherein the lateral surface extends in an inclined manner with respect to the axis of rotation claim 1 , and wherein the lateral surface encloses an angle of between 0° and at most 20° ...

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Номер записи: 5
01-01-2015 дата публикации

CUTTING INSERT AND A TOOL HOLDER WITH A SEAT FOR CUTTING INSERT

Номер: US20150003922A1
Автор: Orlov Alexander
Принадлежит: Vargus Ltd.

The invention relates to a cutting insert () having a first coupling structure and a tool holder () having a complementary second coupling structure with a seat () for a milling tool system and a milling tool system comprising a cutting insert () and a holder (), wherein the first coupling structure comprises a circular cylindrical element () with a cylinder abutment surface, the circular cylindrical element () projecting axially from a bottom surface () of a central body () and being arranged concentrically with respect to the central axis (A), a perpendicular abutment surface () arranged perpendicular to the central axis (A), and at least two ribs () projecting axially from the bottom surface () each having a contact area with a normal direction at least essentially perpendicular to the central axis (A) for opposing a torque about the central axis (A). 1. A cutting insert having a central body , at least one cutting tooth radially projecting from the central body , a central thru hole concentrically arranged with respect to a central axis (A) for receiving a fixing screw , and a coupling structure for coupling the insert to a tool holder and for transmitting a torque from the tool holder to the cutting insert , wherein the coupling structure comprisesa circular cylindrical element with a cylinder abutment surface, the circular cylindrical element projecting axially from a bottom surface of the central body and being arranged concentrically with respect to the central axis (A),a perpendicular abutment surface arranged perpendicular to the central axis (A), andat least two radially extending ribs projecting axially from the bottom surface each having a contact area with a normal direction at least essentially perpendicular to the central axis (A) for opposing a torque about the central axis (A).2. The cutting insert according to claim 1 , wherein the cylindrical abutment surface of the circular cylindrical element is a full perimeter abutment surface claim 1 , which ...

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Номер записи: 6
04-01-2018 дата публикации

ENGINE AND METHOD OF MANUFACTURING CYLINDER BLOCK OF ENGINE

Номер: US20180003127A1
Автор: SAKURAI Kenichi
Принадлежит:

An engine includes a cylinder block including a cylinder hole, a crank shaft as an offset crank, and a connecting rod that connects the piston and the crank shaft. An inclined surface is provided on an entire circumference of a crank-shaft-side opening edge of one end of the cylinder hole. When viewed in the axial direction of the crank shaft, a boundary line between the inclined surface and the cylinder hole extends towards the other end of the cylinder hole as it extends toward an offset side on which the crank shaft is offset from the center axis of the cylinder hole. The offset crank engine has the entire circumference of the crank-shaft-side opening edge of the cylinder hole chamfered without any bad influence on the sliding surface and posture of the piston to avoid interference between the crank-shaft-side opening edge of the cylinder hole and the connecting rod. 1. An engine comprising:a cylinder block including a cylinder hole into which a piston is movably fitted;a crank shaft including an axis offset from a center axis of the cylinder hole; anda connecting rod that connects the piston and the crank shaft to each other; whereinan inclined surface is provided along an entire circumference of a crank-shaft-side opening edge of a first end of the cylinder hole; andwhen viewed in an axial direction of the crank shaft, a boundary line between the inclined surface and the cylinder hole extends towards a second end of the cylinder hole as the inclined surface extends toward an offset side of the cylinder hole at which the crank shaft is offset from the center axis.2. The engine according to claim 1 , wherein the cylinder block includes:a cylinder wall including the cylinder hole;a crank case including a ceiling wall connected to the cylinder wall and defining a crank chamber; anda bearing wall that extends from the ceiling wall to the crank shaft, and supports a cylinder-side half of the crank shaft; whereina honing stone escape portion is provided on the bearing ...

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Номер записи: 7
12-01-2017 дата публикации

END MILL AND METHOD OF MANUFACTURING MACHINED PRODUCT

Номер: US20170008098A1
Автор: Kuroda Masahiko
Принадлежит: KYOCERA CORPORATION

An end mill includes a body including an axis, first cutting edges on a side of a front end of the body, second cutting edges at a rear side of the respective first cutting edges, flutes located along the second cutting edges, and heels located along the flutes. A shape of each of the flutes in a cross section includes a first concave curve on a side of the second cutting edges, a second concave curve on a side of the heels, and a protrusion located between the two concave curves, the protrusion includes two concave curves intersect each other, and a ratio of a distance from a circle including a maximum diameter in the body centered on the axis to a top of the protrusion to a distance H from the circle to the second cutting edge is 0.1 to 0.4. 1. An end mill comprising:a body having a rotation center axis;three or more first cutting edges located at a front end side of the body;second cutting edges located at a rear side of the respective first cutting edges;flutes located along the respective second cutting edges; andheels located along the respective flutes at a front in a rotation direction of the rotation center axis, whereina cross sectional shape of each of the flutes comprises a first concave curve located on a side of a corresponding one of the second cutting edges, a second concave curve located on a side of a corresponding one of the heels, and a protrusion located between the first concave curve and the second concave curve,the protrusion comprises two concave curves intersect each other, anda ratio (h/H) of a distance h from a circle c comprising a maximum diameter capable of being drawn in the body centered on the rotation center axis to a top of the protrusion to a distance H from the circle c to the second cutting edge is 0.1 to 0.4 in a cross sectional view perpendicular to the rotation center axis.2. The end mill according to claim 1 , further comprisingrake surfaces having a flat shape and located between the respective first cutting edges and the ...

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Номер записи: 8
11-01-2018 дата публикации

CUTTING TOOL AND METHOD FOR MANUFACTURING MACHINED PRODUCT

Номер: US20180009045A1
Автор: Yamamoto Masahiro
Принадлежит:

In one embodiment, a cutting tool includes an insert that includes a cutting edge at at least one part of a portion where two surfaces intersect. The cutting tool further includes a holder capable of rotating about a rotational axis. The holder includes a pocket including: a placement portion where the insert is positioned; and a cutout portion is adjacent to the placement portion and positioned further forward in a rotational direction than the placement portion. The holder further includes an inflow port that opens at at least one part of the holder, a first flow path positioned in the interior of the holder, and an outflow port positioned at the pocket. The cutout portion includes a recessed portion. 1. A cutting tool comprising:an insert that comprises a cutting edge at at least one part of a portion where two surfaces intersect; and [ a placement portion where the insert is positioned; and', 'a cutout portion that is adjacent to the placement portion and positioned further forward in the rotational direction than the placement portion;, 'a pocket comprising, 'an inflow port that opens at at least one part of the holder;', 'a first flow path positioned in the interior of the holder; and', 'an outflow port positioned at the pocket,, 'a holder being capable of rotating about a rotational axis, and comprisingwherein the cutout portion comprises a recessed portion.2. The cutting tool according to claim 1 , wherein the recessed portion is at least partially positioned on a first virtual line that connects the rotational axis and the cutting edge when viewed from the front tip.3. The cutting tool according to or claim 1 , further comprising a second flow path between the outflow port and the recessed portion.4. The cutting tool according to claim 3 , wherein facing the placement portion; and', 'comprising a groove portion; and, 'the insert further comprises a surface, the surfacethe groove portion constitutes a portion of the second flow path.5. The cutting tool ...

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Номер записи: 9
19-01-2017 дата публикации

DOUBLE-SIDED TANGENTIAL CUTTING INSERT AND CUTTING TOOL SYSTEM USING THE SAME

Номер: US20170014920A1
Автор: Brunetto Lance, Cope David, Dufour Jean-Luc, Fang Xiangdong Daniel, Mizgalski Kent, Wills David
Принадлежит: KENNAMETAL INC.

A double-sided tangential cutting insert, as well as a tool holder system that carries a plurality of the double-sided tangential cutting inserts, that has a peripheral side shape, as viewed from one of said cutting rake faces, that includes a pair of generally identical opposing main cutting edges wherein each of the main cutting edge comprises a substantially straight main cutting edge portion and an adjoining convex main cutting edge portion. The convex main cutting edge portion is truncated by an adjacent convex minor side face so as to define a generally sharp edge and a point of truncation. The peripheral side shape further includes a pair of opposing full nose cutting edges with a nose cutting radius; and a pair of opposing convex minor cutting edges with a minor cutting edge radius. The minor cutting edge radius is at least about four times greater than the nose cutting radius. 1. A double-sided tangential cutting insert comprising:a pair of substantially identical opposing cutting rake faces; a pair of substantially identical opposing major side surfaces; a pair of substantially identical opposing arcuate side faces; and a pair of substantially identical opposing generally convex minor side faces; and a pair of substantially identical opposing main cutting edges wherein each of the main cutting edge comprises a substantially straight main cutting edge portion and an adjoining convex main cutting edge portion wherein the convex main cutting edge portion being truncated by an adjacent one of the convex minor side faces;', 'a pair of opposing full nose cutting edges having a nose cutting radius; and', 'a pair of opposing convex minor cutting edges having a minor cutting edge radius wherein the minor cutting edge radius is at least four times greater than the nose cutting radius; and, 'a peripheral side shape, as viewed from one of said cutting rake faces, comprisingthe double-sided tangential cutting insert further comprising four indexable cutting edges ...

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Номер записи: 10
17-01-2019 дата публикации

CUTTING INSERT, TOOL HOLDER AND TOOL

Номер: US20190015909A1
Автор: KEMMLER Tobias, LUIK MATTHIAS
Принадлежит:

A cutting insert, an associated tool holder, and a tool comprising such a cutting insert and such a tool holder. The cutting insert has a base body, which defines a cutting insert longitudinal axis, at least one cutting body, which laterally projects from a periphery of the base body and comprises a cutting edge, and a cutting insert bore, which is provided in the base body and extends along the cutting insert longitudinal axis, wherein on an underside, running transversely to the cutting insert longitudinal axis, of the base body are provided a plurality of elevations, which are arranged distributed in the peripheral direction and protrude from the underside of the base body, so that, between respectively two adjacent elevations, a relative depression is respectively obtained, wherein the cutting insert comprises at least one radial contact surface, a plurality of axial contact surfaces and a plurality of torque transfer surfaces for a bearing contact of the cutting insert against the tool holder. 1. A cutting insert for a tool for machining a workpiece , comprising:a base body, which defines a cutting insert longitudinal axis;at least one cutting body, which laterally projects from a periphery of the base body and comprises a cutting edge;a cutting insert bore, which is provided in the base body and extends along the cutting insert longitudinal axis, wherein on an underside, running transversely to the cutting insert longitudinal axis, of the base body are provided a plurality of elevations, which are arranged distributed in a peripheral direction and protrude from the underside of the base body, so that between respectively two adjacent elevations a relative depression is respectively obtained;at least one radial contact surface, a plurality of axial contact surfaces and a plurality of torque transfer surfaces for a bearing contact of the cutting insert against a tool holder, wherein the at least one radial contact surface lies on a cylindrical envelope or ...

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Номер записи: 11
28-01-2016 дата публикации

Ceramic end mills with coolant holes

Номер: US20160023284A1
Автор: Danny Ray Davis, Jason Goldsmith
Принадлежит: Kennametal Inc

In one aspect, end mills are described herein, at least a portion of which comprise or formed of ceramic material. An end mill described herein comprises a shank portion extending along a longitudinal axis of the end mill, a cutting portion extending from the shank portion, the cutting portion formed of a ceramic material and comprising a plurality of blades disposed at a helical angle from the longitudinal axis along an axial length of cut and extending onto a cutting end surface of the end mill, and at least one fluid transport hole extending along the longitudinal axis and terminating in the cutting end surface.

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Номер записи: 12
23-01-2020 дата публикации

Tool, Machine and Method for Producing Roof Ridge-Shaped Chamfers on Teeth of an Internally and Externally Toothed Gearwheel

Номер: US20200023445A1
Автор: Holderbein Walter, Schieke Jörg
Принадлежит:

The invention provides a tool, a method and a machine with which roof ridge-shaped chamfers can be produced on teeth of an internally and externally toothed gearwheel with minimised changeover times during tool set up. For this purpose, a tool according to the invention comprises a tool carrier having a holding section for attachment in a tool holder and a chamfering tool, which is held on the end section of the tool carrier, said end section being associated with the other end face, and during use describes an impact circle with its cutting edge, the diameter of said circle being determined by the radial distance of the cutting edge of the chamfering tool from the axis of rotation of the tool. According to the invention, at least one further chamfering tool is attached in a middle section of the tool carrier which is offset relative to the end section provided with the chamfering tool towards the holding section of the tool carrier. At the same time, the further chamfering tool is held with its cutting edge at a radial distance from the axis of rotation of the tool, which is greater than the radial distance of the cutting edge of the chamfering tool held on the end section of the tool holder. A method according to the invention and a machine according to the invention are based on the use of tools according to the invention. 1. A tool for producing roof ridge-shaped chamfers on teeth of an internally and externally toothed gearwheel , wherein the tool comprisesa finger-like tool carrier having a holding section which is associated with an end face of the tool carrier and provided for fastening in a tool holder of a machine tool,anda chamfering tool, which is held on the end section of the tool carrier associated with the other end face, and during use describes an impact circle with its cutting edge, whose diameter is determined by the radial distance of the cutting edge of the chamfering tool from the axis of rotation of the tool,wherein at least one further ...

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Номер записи: 13
29-01-2015 дата публикации

BALL END MILL WITH COOLANT HOLES

Номер: US20150030396A1
Автор: Abe Tarou, Azegami Takayuki
Принадлежит:

A ball end mill comprises coolant holes and multiple cutting edges in which a rotation locus around an axis line forms a hemispherical shape having a center on the axis line. The cutting edges are formed at intervals in a circumferential direction at a tip of an end mill main body, which is rotated around the axis line. Some of the cutting edges are long edges intersecting each other on the axis line of a tip of the end mill main body, the remaining cutting edges are short edges each having an inner peripheral end at a position away from the axis line. Coolant holes are formed in the end mill main body and are opened on an extended line of the short edge toward the axis line from the inner peripheral end of the short edge in the tip of the end mill main body. 1. A ball end mill comprising:coolant holes; anda plurality of cutting edges in which a rotation locus around an axis line forms a hemispherical shape having a center on the axis line, whereinthe cutting edges are formed at intervals in a circumferential direction at a tip portion of an end mill main body which is rotated around the axis line,some of the cutting edges are long edges intersecting each other on the axis line of a tip of the end mill main body,the remaining cutting edges are short edges each having an inner peripheral end at a position away from the axis line,coolant holes are formed in the end mill main body, andeach of the coolant holes opens on an extended line of the short edge toward the axis line from the inner peripheral end of the short edge in the tip portion of the end mill main body when viewed from the tip in a direction of the axis line.2. The ball end mill according to claim 1 , wherein the coolant hole is made such that a cross section orthogonal to the axis line has a polygonal shape having a corner portion of an acute angle on the axis line side.3. The ball end mill according to claim 1 , wherein the cutting edges are configured such that the long edge and the short edge are ...

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Номер записи: 14
02-02-2017 дата публикации

ROTARY CUTTING TOOL WITH BLADES HAVING REPEATING, UNEQUAL INDEXING AND HELIX ANGLES

Номер: US20170028482A1
Автор: Boulakhov Sergei Vladimir, DAVIS Danny Ray, Palmer Frederick John, Sharivker Leonid Boris
Принадлежит:

A rotary cutting tool with a longitudinal axis includes a shank portion and a cutting portion defining a length of cut. The cutting portion includes a plurality of blades separated by flutes extending along the length of cut. A first blade forms a first helix angle with respect to the longitudinal axis at the cutting tip. A second blade adjacent the first blade forms a second, different helix angle with respect to the longitudinal axis at the cutting tip. A third blade adjacent the second blade forms a third, different helix angle with respect to the longitudinal axis at the cutting tip. The first, second and third helix angles deviate by at least 2 degrees. The cutting edges of the first, second and third blades have unequal indexing. 1. A rotary cutting tool with a longitudinal axis , comprising:a shank portion; anda cutting portion extending from the shank portion to a cutting tip, the cutting portion having a length of cut, and a plurality of blades separated by flutes extending along the length of cut, each of the blades including a cutting edge at an intersection between a leading face and the land surface,{'b': 1', '2', '3, 'wherein a cutting edge of a first blade is formed at a first distance, X, with respect to a cutting edge of a second blade adjacent the first blade, and wherein the cutting edge of the second blade is formed at a second distance, X, with respect to a cutting edge of a third blade adjacent the second blade, and wherein the cutting edge of the third blade is formed at a third distance, X, with respect to a cutting edge of a fourth blade adjacent the third blade, and'}wherein the first blade of the plurality of blades forms a first helix angle with respect to the longitudinal axis at the cutting tip, and wherein the second blade forms a second, different helix angle with respect to the longitudinal axis at the cutting tip, and wherein the third blade of the plurality of blades adjacent the second blade forms a third, different helix angle ...

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Номер записи: 15
31-01-2019 дата публикации

CUTTING INSERT AND CUTTING TOOL HAVING SAME MOUNTED THEREON

Номер: US20190030628A1
Автор: KIM Hyo San, KIM Tae Kyun, Kim Young Heum, LEE Nam Seon, NAM Ki Chan, Oh Min Seok
Принадлежит: KORLOY INC.

The technical objective of the present invention is to provide a cutting insert that can minimize a phenomenon in which the cutting insert is lifted up from a seat surface of a cutting tool while a cutting process is being performed, and can increase an area by which the cutting insert is fastened to the cutting tool. To this end, the cutting insert of the present invention comprises: a principal surface; a fastening surface opposite to the principal surface, the fastening surface being placed on the seat surface of the cutting tool; and a screw passage hole formed through each of central portions of the principal and fastening surfaces, wherein a screw is fastened to the cutting tool through the screw passage hole; and first and second long grooves extending across the fastening surface, wherein each of the first and second long grooves includes: a proximal sidewall adjoining a first adjacent fastening portion of the fastening surface and making an acute angle with the first adjacent fastening portion; a distal sidewall adjoining a second adjacent fastening portion of the fastening surface and making an angle with the second adjacent fastening portion; and a ceiling wall connecting the proximal and distal sidewalls, wherein the proximal sidewall is located closer to the screw passage hole than the distal sidewall is located to the screw passage hole. 1. A cutting insert , comprising:a principal surface;a fastening surface opposite to the principal surface, the fastening surface being placed on the seat surface of a cutting tool;a screw passage hole formed through each of central portions of the principal and fastening surfaces, wherein a screw is fastened to the cutting tool through the screw passage hole; and a proximal sidewall adjoining a first adjacent fastening portion of the fastening surface and making an acute angle with the first adjacent fastening portion;', 'a distal sidewall adjoining a second adjacent fastening portion of the fastening surface and ...

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Номер записи: 16
05-02-2015 дата публикации

END MILL WITH COOLANT HOLES

Номер: US20150037105A1
Автор: Azegami Takayuki, Fukata Kouji, Matsumoto Genki
Принадлежит: MITSUBISHI MATERIALS CORPORATION

An end mill comprises: a main body with two coolant holes; three chip discharge grooves formed at an outer periphery of a tip portion of the main body; gashes formed at the tip portions of the three chip discharge grooves; and three end cutting edges formed at intersecting ridgeline portions between tip flanks and wall surfaces facing an end mill rotation direction of the gashes. One end cutting edge is long and extends across the axis line at a tip of the main body. Inner peripheral ends of two remaining end cutting edges are disposed at intervals from the axis line. Two coolant holes are drilled toward a tip side in a direction of the axis line. A first coolant hole opens at the tip flank of the long edge, and a second coolant hole opens at a gash of one of the two remaining end cutting edges. 1. An end mill comprising:a main body with two coolant holes that are drilled toward a tip side in a direction of an axis line in the main body;three chip discharge grooves that are formed at an outer periphery of a tip portion of the main body which rotates around the axis line;gashes that are respectively formed at tip portions of the chip discharge grooves; andthree end cutting edges that are formed at intersecting ridgeline portions between wall surfaces facing an end mill rotation direction of the gashes and tip flanks of the main body, whereinone end cutting edge among the three end cutting edges is a long edge extending across the axis line from an outer periphery side at a tip of the end mill main body, inner peripheral ends of the two remaining end cutting edges are disposed at intervals from the axis line at the tip of the end mill main body,a first one of the coolant holes opens at a tip flank of the long edge, anda second one of the coolant holes opens at the gash of one end cutting edge of the two remaining end cutting edges.2. The end mill according to claim 1 , wherein the second coolant hole opens at the gash of one end cutting edge adjacent to the long edge ...

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Номер записи: 17
08-02-2018 дата публикации

SQUARE END MILL

Номер: US20180036809A1
Автор: Maeda Katsutoshi
Принадлежит: Mitsubishi Hitachi Tool Engineering, Ltd.

Square end mill includes long end cutting edge disposed from end portion on outer peripheral side in radial direction to center in the radial direction when a cutting edge portion is viewed from end face side, and short end cutting edges disposed from other end portions on outer peripheral side in radial direction to middles on center side in radial direction, first gashes disposed on regions from lines connecting end portions on center side in radial direction of the short end cutting edges to center in radial direction to the long end cutting edge on rear side in the rotation direction, second and third gashes disposed on rear and front sides in rotation direction of the first gashes, and all gashes formed in curved surface shapes depressed to a shank side on opposite side in axial direction of the cutting edge portion. 1. A square end mill comprising;a cutting edge portion that includes an end cutting edge and a peripheral cutting edge disposed on a tip side in an axial direction of a tool body, the end cutting edge being disposed from a center side to an outer peripheral side in a radial direction, the peripheral cutting edge being continuous with the end cutting edge, whereinthe end cutting edge includes at least one long end cutting edge and at least two short end cutting edges, the long end cutting edge is continuously disposed from an end portion on the outer peripheral side in the radial direction to closer to a center in the radial direction when the cutting edge portion is viewed from an end face side in an axial direction, and the short end cutting edges are continuously disposed from other end portions on the outer peripheral side in the radial direction to middles on the center side in the radial direction when the cutting edge portion is viewed from the end face side in the axial direction, andthe short end cutting edges each include a first gash on a region from a line connecting the end portion on the center side in the radial direction to a ...

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Номер записи: 18
08-02-2018 дата публикации

Rotary cutting tool

Номер: US20180036810A1
Автор: Stojan Stojanovski
Принадлежит: Individual

A rotatable cutting tool includes an elongate body having a longitudinal axis, a proximal end and a distal end and at least one helical flute extending over a length of the elongate body, the helical flute having a first end and a second end. The flute includes a cutting-edge with a first radius from a longitudinal center of the cutting tool, a trailing edge with a second radius from a longitudinal center of the cutting tool, wherein the second radius is smaller than the first radius, a flute surface between the cutting-edge and the trailing edge, the flute surface including a maximum radius at the cutting-edge and a plurality of foam chip shedding exclusions spaced along the cutting-edge of the helical flute, each of the foam chip shedding exclusions providing a gap in the cutting-edge where the radius within the gap is smaller than the first radius.

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Номер записи: 19
24-02-2022 дата публикации

DIAMOND TOOL AND METHOD FOR PRODUCING A DIAMOND TOOL

Номер: US20220055127A1
Автор: Kleine Friedhelm, Lein Burghard
Принадлежит: SCHOTT Diamantwerkzeuge GmbH

A method for producing a tool with a diamond-studded tool head includes the steps of providing a tool shank and fixing a support element to a free end of the tool shank. The method further includes the steps of applying a layer of material interspersed with diamonds at least in sections to the support element and to a section of the tool shank adjoining the support element, and at least partially removing the support element, so that the layer of material interspersed with diamonds forms a tool head which in cross-section has the form of a circular ring and has a front-side recess. 1. A method for producing a tool with a diamond-studded tool head , comprising the following steps:providing a tool shank;fixing a support element to a free end of the tool shank;applying a layer of material interspersed with diamonds at least in sections to the support element and to a section of the tool shank adjoining the support element;at least partially removing the support element, so that the layer of material interspersed with diamonds forms a tool head which in cross-section has the form of a circular ring and has a front-side recess.2. The method according to claim 1 , wherein the support element is a body which is cylindrical in shape at least in sections and which is used as a support for growing the layer of material interspersed with diamonds at least in sections.3. The method according to claim 1 , wherein the support element is fixed to the tool shank in frictional connection and/or by an integral bond.4. The method according to claim 1 , wherein the support element has a projection that is inserted into a recess of the tool shank to the support element to the tool shank.5. The method according to claim 1 , wherein the layer of material is applied by means of an electroplating process to the support element and in sections to the tool shank.6. The method according to claim 1 , wherein one or more contours claim 1 , which are covered by the layer of material claim 1 , are ...

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Номер записи: 20
07-02-2019 дата публикации

END MILL

Номер: US20190039153A1
Автор: PITTALA Gaetano
Принадлежит:

An end mill has a shank section and a cutting section connected thereto. The cutting section includes a core supporting at least two spaced apart teeth that have a cutting edge extending in the axial direction with respect to the axis of rotation of the end mill. Each cutting edge has a flute associated therewith and each flute has, for each cross-section of the end mill perpendicular to the axis of rotation thereof, a bottom point on the core at a shortest distance to the axis of rotation. At least two flutes have a shortest distance that varies differently with the distance to a cutting end of the end mill. 1. An end mill comprising:a shank section arranged to be retained in a rotary driven apparatus; anda cutting section connected to the shank section, the cutting section including a core which supports at least two spaced apart teeth which have a cutting edge extending in an axial direction with respect to the axis of rotation of the end mill to a cutting end of the end mill located opposite to a cutting section end closest to a connection to the shank section, each cutting edge having a flute associated therewith, the flute being located before the cutting edge in an intended direction of rotation of the end mill and each flute having for each cross-section of the end mill perpendicular to the axis of rotation thereof a bottom point on said core at a shortest distance to the axis of rotation, wherein each axial portion of the cutting section of a predetermined length has at least two flutes each with a said shortest distance, each shortest distance varying differently, one increasing while the other decreasing, with the distance to the cutting end of the end mill in the axial direction.2. The end mill according to claim 1 , wherein the cross-section area of the core is substantially constant or constant in a majority of or in all said axial portions of the cutting section.3. The end mill according to claim 1 , wherein each said axial portion of a predetermined ...

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Номер записи: 21
19-02-2015 дата публикации

MILLING AND BORING TOOL

Номер: US20150050095A1
Автор: KRENZER Ulrich
Принадлежит: Mapal Fabrik Fur Prazisionswerkzeuge Dr. KRESS KG

A milling and boring tool with a tool shaft which comprises a center axis, at least one geometrically defined rough cutter and at least one geometrically defined finishing cutter, and the at least one rough cutter and the at least one finishing cutter respectively comprise a chip groove. The milling and boring tool is characterized in that the chip groove of the at least one finish machining cutter has an opposite twist than the chip groove of the at least one rough cutter. 1. A milling and boring tool witha tool shaft havinga center axisat least one geometrically defined rough cutter andat least one geometrically defined finishing cutter,wherein the at least one rough cutter and the at least one finishing cutter respectively comprise a chip groovewherein the chip groove of the at least one finishing cutter has an opposite twist than the chip groove of the at least one rough cutter.2. The milling and boring tool as set forth in claim 1 , wherein the at least one rough cutter has a cutting segment located in a peripheral surface area of the milling and boring tool.3. The milling and boring tool as set forth in claim 1 , wherein the at least one rough cutter and the at least one finishing cutter are arranged at an axial distance—measured in the direction of the center axis—which is greater than or equal to the spiral gradient of a helical pathway on which the milling and boring tool is moved during the machining of a workpiece.4. The milling and boring tool as set forth in claim 1 , wherein at least one rough cutter and the at least one finishing cutter are arranged at an axial distance—measured in the direction of the center axis—which is greater than or equal to the thickness of a workpiece machined with the milling and boring tool.5. The milling and boring tool as set forth in claim 1 , wherein the radial distance of the at least one finishing cutter of the center axis is greater than the radial distance of the at least one rough cutter.6. The milling and boring ...

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Номер записи: 22
25-02-2016 дата публикации

ASYMMETRIC END MILLS AND APPLICATIONS THEREOF

Номер: US20160052072A1
Автор: DAVIS Danny Ray, PRITCHARD Stephen G.
Принадлежит:

In one aspect, rotationally balanced asymmetric end mills are described herein. An end mill described herein comprises a shank portion extending along a longitudinal axis of the end mill, and a cutting portion extending from the shank portion. The cutting portion comprises a plurality of unequally indexed blades separated by flutes along an axial length of cut, the blades extending onto a cutting end surface of the end mill, wherein at least one of the flutes is of unequal length and the asymmetric end mill has an imbalance of 2.0 gmm or less. 1. An asymmetric end mill comprising:a shank portion extending along a longitudinal axis of the end mill; anda cutting portion extending from the shank portion, the cutting portion comprising a plurality of unequally indexed blades separated by flutes along an axial length of cut, the blades extending onto a cutting end surface of the end mill, wherein at least one of the flutes is of unequal length and the asymmetric end mill has an imbalance of 2.0 gmm or less.2. The asymmetric end mill of claim 1 , wherein the blades are disposed at one or more helical angles from the longitudinal axis along the axial length of cut.3. The asymmetric end mill of claim 2 , wherein the helical angle of one blade changes along the axial length of cut.4. The asymmetric end mill of having at least three flutes.5. The asymmetric end mill of having at least four flutes.6. The asymmetric end mill of having an imbalance of 1.0 gmm or less.7. The asymmetric end mill of claim 1 , wherein the cutting portion is of monolithic construction.8. The asymmetric end mill of claim 7 , wherein the cutting portion is brazed to the shank portion.9. The asymmetric end mill of claim 1 , wherein the end mill is a solid end mill.10. The asymmetric end mill of claim 1 , wherein shank portion and the cutting portion are formed of substantially the same material.11. The asymmetric end mill of claim 1 , wherein the shank portion and the cutting portion are formed of ...

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Номер записи: 23
13-02-2020 дата публикации

BALL END MILL

Номер: US20200047263A1
Автор: Maeda Katsutoshi, Yokokawa Mitsuhiro
Принадлежит:

A ball end mill according to the present invention includes an end mill body which is formed in a shaft shape, a plurality of convex arcuate end cutting edges which are disposed on a tip portion of the end mill body at intervals around an axis and form a hemispherical shape such that a rotational locus around the axis has a center on the axis, and a plurality of gashes which are respectively disposed to be adjacent to the plurality of end cutting edges in an end mill rotation direction around the axis. The plurality of end cutting edges includes a first end cutting edge longest among the plurality of end cutting edges, a second end cutting edge which is adjacent to the first end cutting edge in the end mill rotation direction and a third end cutting edge which is adjacent to the second end cutting edge in the end mill rotation direction. 1. A ball end mill comprising:an end mill body which is formed in a shaft shape;a plurality of convex arcuate end cutting edges which are disposed on a tip portion of the end mill body at intervals around an axis and form a hemispherical shape such that a rotational locus around the axis has a center on the axis; anda plurality of gashes which are respectively disposed to be adjacent to the plurality of end cutting edges in an end mill rotation direction around the axis, a first end cutting edge of which a cutting edge length toward an inside in a radial direction orthogonal to the axis is longest among the plurality of end cutting edges,', 'a second end cutting edge which is adjacent to the first end cutting edge in the end mill rotation direction and of which a cutting edge length toward the inside in the radial direction is shorter than that of the first end cutting edge, and', 'a third end cutting edge which is adjacent to the second end cutting edge in the end mill rotation direction and of which a cutting edge length toward the inside in the radial direction is shorter than that of the second end cutting edge,, 'wherein the ...

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Номер записи: 24
26-02-2015 дата публикации

BALL END MILL

Номер: US20150056027A1
Автор: Abe Tarou, Azegami Takayuki
Принадлежит: MITSUBISHI MATERIALS CORPORATION

A ball end mill, which includes long and short cutting edges alternately formed, shows excellent chip discharge performance without sacrificing strength. An even number of cutting edges are formed at intervals in a circumferential direction on a front end of an end mill body rotated about an axis and have rotation trajectories formed around the axis that form a hemispherical shape. The cutting edges adjacent to each other in the circumferential direction with one cutting edge interposed are long cutting edges that intersect with each other on the axis. The other cutting edges adjacent to each other in the circumferential direction with one cutting edge interposed are short cutting edges that include inner peripheral ends at positions distant from the axis. A gash of the long cutting edge and a gash of the short cutting edge connect with each other on a front end side of the end mill body. 1. A ball end mill comprising:an even number of cutting edges which are formed at intervals in a circumferential direction on a front end portion of an end mill body rotated about an axis and have rotation trajectories around the axis that form a hemispherical shape having a center on the axis,wherein among the even number of cutting edges, the cutting edges, which are adjacent to each other in the circumferential direction with one cutting edge interposed therebetween, are long cutting edges that intersect with each other on the axis on the front end portion of the end mill body and the other cutting edges, which are adjacent to each other in the circumferential direction with one cutting edge interposed therebetween, are short cutting edges that include inner peripheral ends at positions distant from the axis,a gash of the long cutting edge and a gash of the short cutting edge connect with each other on a front end side of the end mill body, said short cutting edges being adjacent to the long cutting edges in an end mill rotation direction, andthe gash of the long cutting edge is ...

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Номер записи: 25
21-02-2019 дата публикации

MILLING TOOL

Номер: US20190054549A1
Автор: KRENZER Ulrich, Müller Marco
Принадлежит: Mapal Fabrik Fur Prazisionswerkzeuge Dr. KRESS KG

A milling tool is suggested having 1. A milling tool comprising:a base body,the base body defining a central axis, and a front side, wherebyat least two geometrically defined first front edges arranged at the front side of base body, the at least two geometrically defined first front edges each exhibiting a first edge section facing the central axis, respectively,the first edge sections of the at least two front edges being formed in an ascending fashion towards the central axis so that the first edge sections form a centering tip,the centering tip arranged in a recessed manner when compared with an axial outermost point of the at least two first front edges in an axial direction.2. The milling tool according to claim 1 , wherein the first front edges each exhibit a second edge section that is facing away from the central axis claim 1 , respectively claim 1 , which ascends to an imagined circumferential line of the base body.3. The milling tool according to claim 2 , wherein the second edge sections ascend in an arched and convex fashion towards the imagined circumferential line.4. The milling tool according to claim 2 , wherein the first front edges pass through a minimum in a transition area between the first edge sections and the second edge sections.5. The milling tool according to claim 2 , wherein first cutting faces are assigned to the first edge sections claim 2 , whereby second cutting faces are assigned to the second edge sections claim 2 , whereby the first cutting faces and the second cutting faces of each front edge comprise claim 2 , respectively claim 2 , between them at least partially an angle that is different from 0°.6. The milling tool according to claim 1 , wherein the milling tool when viewed in plan view onto the front side defines a center at the intersection of two orthogonal lateral axes claim 1 , wherein at least a second edge section of the front edges claim 1 , when viewed in plan view onto the front side exhibits a position below the ...

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Номер записи: 26
21-02-2019 дата публикации

CUTTING INSERT AND CUTTING TOOL

Номер: US20190054550A1
Автор: Morita Keisuke, Yoshida Satoru
Принадлежит: TUNGALOY CORPORATION

A cutting insert () comprises: a first end surface () and a second end surface () which are opposed to each other; a peripheral side surface () which extends so as to connect the first end surface () and the second end surface (); a first cutting edge () which is arranged in an intersecting edge between the first end surface () and the peripheral side surface (); and a second cutting edge () which is arranged in an intersecting edge between the second end surface () and the peripheral side surface (). The peripheral side surface () includes a first flank () which is connected to the first cutting edge () and an intermediate peripheral side surface portion () which is arranged closer to the second end surface () than the first flank (). The first flank () extends in a direction perpendicular to the first end surface (). The intermediate peripheral side surface portion () protrudes outward from the first flank (). 1. A cutting insert comprising:a first end surface and a second end surface which are opposed to each other;a peripheral side surface which extends so as to connect the first end surface and the second end surface;a first cutting edge which is arranged in an intersecting edge between the first end surface and the peripheral side surface; anda second cutting edge which is arranged in an intersecting edge between the second end surface and the peripheral side surface, wherein:the peripheral side surface includes a first flank which is connected to the first cutting edge and an intermediate peripheral side surface portion which is arranged closer to the second end surface than the first flank;the first flank extends in a direction perpendicular to the first end surface; andthe intermediate peripheral side surface portion protrudes outward from the first flank.2. The cutting insert according to claim 1 , wherein:the peripheral side surface includes a second flank which is connected to the second cutting edge;the second flank extends in a direction perpendicular ...

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Номер записи: 27
20-02-2020 дата публикации

DISC MILLING CUTTER AND A KIT COMPRISING SUCH A DISC MILLING CUTTER

Номер: US20200055128A1
Автор: LEHTO Ralf
Принадлежит:

A milling tool for metal cutting machining has a tool holder with a shaft. At least one disc milling cutter having a central through-hole is mounted on the shaft. The disc milling cutter has internal coolant channels extending radially therein and connected to a coolant source through axial through-holes aligned with axial through-holes of one or more spacer rings, which are also mounted on the shaft, so as to provide for feeding of coolant to the disc milling cutter when placed in different positions along the extension of the shaft. 1. A disc milling cutter for metal cutting machining comprising:an outer peripheral portion provided with a plurality of cutting edges or a plurality of seats arranged for a plurality of cutting inserts;a central through-hole arranged for mounting the disc milling cutter onto a shaft of a rotatable tool holder;means configured to provide a rotary preventing attachment of the disc milling cutter in a specific angular position in relation to the shaft penetrating the central through-hole;at least one internal coolant channel extending radially within the disc milling cutter from a radially inner opening located in an inner central portion to at least one outlet opening in the outer peripheral portion; andat least one axially directed inlet opening disposed in a first axially directed side abutment surface of the inner central portion arranged for receiving the coolant and communicating with the radially inner opening of the internal radially extending coolant channel, wherein the at least one axially directed inlet opening is formed by at least one axial through-hole extending from the first axially directed side abutment surface to a second axially directed side abutment surface on an opposite side of the inner central portion of the disc milling cutter.2. The disc milling cutter according to claim 1 , further comprising at least one internal coolant distribution channel extending at least partially around the central through-hole and ...

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Номер записи: 28
28-02-2019 дата публикации

Cutting insert and cutting tool

Номер: US20190061024A1
Автор: Hikaru SHIROMA
Принадлежит: Tungaloy Corp

The present invention provides a cutting insert in which suitable honing is formed on a cutting edge. The cutting insert is provided with: two end surfaces opposing each other; a peripheral side surface extending between the two end surfaces; and a cutting edge formed on an intersecting ridge between at least one of the two end surfaces and the peripheral side surface. The cutting edge at least includes a major cutting edge and an inner cutting edge. Honing is provided on the major cutting edge and the inner cutting edge. A width of second honing of the inner cutting edge is narrower than a width of first honing of the major cutting edge, as viewed from a side of the end surfaces.

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Номер записи: 29
10-03-2016 дата публикации

CORNER RADIUS END MILL

Номер: US20160067796A1
Автор: Budda Eliyahu, KHINA Alexander
Принадлежит: Iscar, Ltd.

A corner radius end mill includes a blended gash extending along a cutting edge. The blended gash is formed in a corner sector of the end mill. The corner sector has a first half-sector and a second half-sector defined on opposite sides of an imaginary bisection line of the corner sector, the first and second half-sectors subtending equal angles about the imaginary bisection line. The blended gash extends from a first extremity and blends an end gash surface and flute rake surface of the corner radius end mill. The blended gash is spaced from a radial tangent point by a predetermined distance, and extends to a second extremity which is spaced apart from the axial line and the second half-sector. 125.-. (canceled)26. A corner radius end mill configured for rotating about a rotation axis (A) , comprising:a shank portion; anda cutting portion extending from the shank portion and having a diameter (D); a helical flute having a helix angle H which fulfills the condition 20°0.15D, a first half-sector of the corner sector extending from an imaginary bisection line of the corner sector to a radial tangent point and a second half-sector of the corner sector extending from the imaginary bisection line to an axial tangent point, the first and second half-sectors subtending equal angles about the imaginary bisection line;', 'an end gash surface extending adjacent the cutting edge and the flute rake surface; and', 'a blended gash extending along the cutting edge from a first extremity, and blending the end gash surface and the flute surface;, 'the cutting portion comprisingthe blended gash being spaced from a radial tangent point by a predetermined distance;the blended gash extending to a second extremity which is spaced apart from an imaginary axial line and ...

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Номер записи: 30
08-03-2018 дата публикации

Double-sided high feed milling insert, high feed milling tool and method

Номер: US20180065195A1
Автор: Bertrand Rivière
Принадлежит: SECO TOOLS AB

A double-sided milling insert for high feed milling of metal workpieces includes upper and lower faces facing in opposite directions and convex clearance surfaces extending between the upper and lower faces. Each one of the faces includes a recessed support surface. The support surfaces are substantially parallel to each other and have a cavity therein for receiving a fastening device. Intersections of the convex clearance surfaces with the upper and lower faces form convex cutting edges when seen in a plan view. A rake face is provided adjacent the convex cutting edges. Each convex cutting edge is concave when seen in a side view and includes a substantially straight cutting edge portion on each side of a curved cutting edge portion when seen in plan view. A milling tool with a plurality of such inserts and a method of high feed milling using this tool are also disclosed.

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Номер записи: 31
09-03-2017 дата публикации

Rotary Cutting Tool Having Axial Position Adjustment Arrangement

Номер: US20170066066A1
Автор: Svitoslav SERBUTOVSKY
Принадлежит: Iscar Ltd

A rotary cutting tool includes a tool holder and a tool body releasably attached thereto. The tool body has a cutting portion that includes a peripheral insert pocket, for retaining a cutting insert. The tool holder includes an adjustment arrangement that includes a biasing member, movably attached to the tool holder, having a biasing portion. The cutting portion is adjustable between a non-flexed position and a flexed position. In the flexed position, the cutting portion is elastically deformed in a forward direction due to biasing engagement with the biasing portion, thereby adjusting the axial position of the insert pocket and thus the cutting insert.

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Номер записи: 32
15-03-2018 дата публикации

ROUGHING END MILL

Номер: US20180071839A1
Автор: Azegami Takayuki, Hosokawa Masayasu, Sakaguchi Koutarou
Принадлежит:

A roughing end mill includes: an end mill main body rotated about an axis; and four or more of outer peripheral cutting edges provided on an outer circumference of a tip part of the end mill main body spaced apart in a circumferential direction, each of the outer peripheral cutting edges extending from a tip of the end mill main body to a rear side, wherein each of outer peripheral cutting edges includes a waveform cutting edge that is concaved and convexed in a radial direction, a phase is shifted within one pitch, and the waveform cutting edges of the outer peripheral cutting edges have one or more parts, in which phases of the waveform cutting edges are sequentially shifted multiple times toward a rear end side of the end mill main body, and shifted the same multiple times toward a tip end side of the end mill main body. 1. A roughing end mill comprising:an end mill main body configured to be rotated about an axis; andfour or more of outer peripheral cutting edges provided on an outer circumference of a tip part of the end mill main body spaced apart in a circumferential direction with an interval, each of the outer peripheral cutting edges extending from a tip of the end mill main body to a rear side thereof, whereineach of outer peripheral cutting edges comprises a waveform cutting edge that is concaved and convexed in a radial direction of the end mill main body as viewed from an end mill rotation direction, anda phase of the waveform cutting edge is shifted within one pitch of the waveform cutting edge between waveform cutting edges of outer peripheral cutting edges adjacent in the circumference direction, and whereinthe waveform cutting edges of the outer peripheral cutting edges have one or more parts, in which phases of the waveform cutting edges are sequentially shifted multiple times toward a rear end side of the end mill main body, and then shifted the same multiple times toward a tip end side of the end mill main body, while a reference outer ...

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Номер записи: 33
15-03-2018 дата публикации

ROTATING TOOL

Номер: US20180071840A1
Автор: Kitajima Jun, SUZUKI Norikazu
Принадлежит:

A rotating tool includes a tool body which rotates around an axial line, four or more chip discharge grooves which are formed on an outer periphery of the tool body with gaps therebetween in a circumferential direction, and a plurality of cutting inserts which are arranged in multiple stages along the chip discharge grooves. In a cross-sectional view perpendicular to the axial line, when a center angle formed between a pair of virtual straight lines which connects each of the cutting edges of the cutting inserts disposed in a pair of chip discharge grooves adjacent to each other in the circumferential direction and the axial line to each other is defined as an angle, a plurality of angles formed around the axial line include one maximum angle (θmax), one minimum angle (θmin), and two or more angles other than the angle (θmax) and the angle (θmin). 1. A rotating tool , comprising:a tool body which is formed in a columnar shape and rotates around an axial line;a chip discharge groove which is formed on an outer periphery of the tool body and gradually extends toward a side opposite to a tool rotation direction around the axial line from a distal end of the tool body toward a posterior end side of the tool body; anda plurality of cutting inserts which include cutting edges protruding from the outer periphery of the tool body toward the outside in a radial direction and are arranged in multiple stages along the chip discharge groove on a wall surface of the chip discharge groove facing the tool rotation direction,wherein at least four chip discharge grooves are provided on the outer periphery of the tool body with gaps therebetween in a circumferential direction,wherein in a cross-sectional view perpendicular to the axial line, when a center angle formed between a pair of virtual straight lines which connects each of the cutting edges of the cutting inserts disposed in a pair of chip discharge grooves adjacent to each other in the circumferential direction and the axial ...

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Номер записи: 34
05-03-2020 дата публикации

MIRROR FINISHING METHOD AND MIRROR FINISHING TOOL

Номер: US20200070255A1
Автор: UENISHI Daisuke
Принадлежит:

A mirror finishing method for mirror-finishing a workpiece includes: a step of performing a first machining operation with a first tool which has a cylindrical portion made of polycrystalline diamond or cubic boron nitride at the tip of a shank thereof and further has a cutting edge formed by forming a linear groove on the cylindrical portion; and a step of, after the first machining operation has been performed, performing a second machining operation with a second tool which has a cylindrical portion made of polycrystalline diamond or cubic boron nitride at the tip of a shank thereof with no cutting edge on the cylindrical portion. 1. A mirror finishing method for mirror-finishing a workpiece , comprising:a step of performing a first machining operation with a first tool, wherein the first tool has a cylindrical portion made of polycrystalline diamond or cubic boron nitride at a tip of a shank thereof and further has a cutting edge formed by forming a linear groove on the cylindrical portion; anda step of, after the first machining operation has been performed, performing a second machining operation with a second tool, wherein the second tool has a cylindrical portion made of polycrystalline diamond or cubic boron nitride at a tip of a shank thereof with no cutting edge on the cylindrical portion.2. The mirror finishing method according to claim 1 , further comprising a step of claim 1 , before the first machining operation claim 1 , performing a third machining operation with a third tool claim 1 , wherein the third tool has a body made of cemented carbide at a tip of a shank thereof and further has a cutting edge on the body.3. A mirror finishing tool for mirror-finishing a workpiece claim 1 , comprising:a cylindrical portion made of polycrystalline diamond or cubic boron nitride at a tip of a shank thereof; anda cutting edge formed by forming a linear groove on the cylindrical portion.4. The mirror finishing tool according to claim 3 , wherein a rake angle of ...

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Номер записи: 35
18-03-2021 дата публикации

End mill

Номер: US20210078088A1
Автор: Masayoshi ZAITSU, Naohiro Otsuki, Takuya Ota
Принадлежит: Kawasaki Jukogyo KK

An end mill includes: a columnar tool body that rotates about a center axis; and outer peripheral cutting edges on an outer peripheral surface of the tool body, the outer peripheral cutting edges including a first outer peripheral cutting edge and a second outer peripheral cutting edge. A relief angle θ of the first outer peripheral cutting edge changes to increase in an axial direction of the tool body from a bottom face that is one end of the tool body. A relief angle θ of the second outer peripheral cutting edge changes to decrease in the axial direction from the bottom face.

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Номер записи: 36
22-03-2018 дата публикации

FORMED END MILL

Номер: US20180079016A1
Автор: Azegami Takayuki
Принадлежит:

In a formed end mill, a peripheral cutting edge has a smaller-diameter cutting part and a larger-diameter cutting part. An imaginary line obtained by lining up a deepest point of a flute bottom of a chip discharge flute, which appears in a cross-sectional view perpendicular to an axis of an end mill body, in an extending direction of the chip discharge flute is defined as a virtual flute bottom line. A flute helix angle, which is formed between the virtual flute bottom line and the axis, in a side view when the end mill body is seen from a radial direction orthogonal to the axis, is 0 degrees or more at a distal end part of the chip discharge flute in the axial direction, and increases gradually from the distal end part toward a posterior end in the axial direction. 1. A formed end mill comprising:an end mill body that has a smaller-diameter part and a larger-diameter part with a larger external diameter than the smaller-diameter part arranged adjacent to each other in an axial direction and is rotated around an axis;a chip discharge flute that is formed at an outer periphery of the end mill body and extends gradually toward an opposite to a tool rotational direction around the axis as it goes from a distal end toward a posterior end in the axial direction; anda peripheral cutting edge that is formed at an intersection ridgeline between a wall surface of the chip discharge flute that faces the tool rotational direction, and an outer peripheral surface of the end mill body,wherein the peripheral cutting edge hasa smaller-diameter cutting part located in the smaller-diameter part, anda larger-diameter cutting part located in the larger-diameter part,wherein an imaginary line obtained by lining up a deepest point of a flute bottom of the chip discharge flute, which appears in a cross-sectional view perpendicular to the axis of the end mill body, in an extending direction of the chip discharge flute is defined as a virtual flute bottom line,wherein an angle of an acute ...

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Номер записи: 37
29-03-2018 дата публикации

TWO-WAY MILLING CUTTER

Номер: US20180085835A1
Автор: WU MING-KUNG
Принадлежит:

A milling cutter includes a cutting section extending from a shank along an axis. The shank includes a free end as a first end of the milling cutter. The cutting section includes a free end as a second end of the milling cutter. The cutting section includes at least one right-hand cutting unit, at least one left-hand cutting unit and at least two grooves about the axis. Each of the grooves is made between the right-hand cutting unit and the left-hand cutting unit. The right-hand cutting unit includes several right-hand blades extending at a first helical angle relative to the axis. The left-hand cutting unit includes several left-hand blades extending at a second helical angle relative to the axis. 1203020201130122030. A milling cutter comprising a shank () and a cutting section () connected to the shank () , the shank () comprising a free end as a first end () of the milling cutter , the cutting section () comprising a free end as a second end () of the milling cutter , the shank () and the cutting section () comprising a same rotational axis , the milling cutter being characterized by:{'b': 30', '31', '32', '35', '31', '32, 'the cutting section () comprising at least one right-hand cutting unit () and at least one left-hand cutting unit () about the rotational axis, at least one groove () being made between the right-hand cutting unit () and the left-hand cutting unit () for containing debris and separating;'}{'b': 31', '33', '32', '34', '33', '34, 'the right-hand cutting unit () comprising several right-hand blades (), the left-hand cutting unit () comprising several left-hand blade (), each of the right-hand and left-hand blades (, ) extending at a helical angle relative to the rotational axis;'}{'b': 33', '34', '331', '341', '332', '342', '331', '341', '332', '342', '335', '345', '331', '33', '341', '34, 'each of the right-hand and left-hand blades (, ) comprising a leading face (, ) and a following face (, ), the leading face (, ) intersects the following face ...

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Номер записи: 38
21-03-2019 дата публикации

REUSING METHOD OF END MILL

Номер: US20190084058A1
Автор: Fujiwara Masayoshi, TODA Mitsuhiro
Принадлежит:

A reusing method of an end mill , in which an end mill () has a margin which is a part of a circle having a diameter identical to a diameter of a shank part (), the margin being provided on an outer edge of a cutting part (), a base material of the end mill () is machined in advance so as to have coaxiality having equal accuracy to coaxiality for the cutting part (), the shank part () is an unmachined part left without cutting the base material, the margin is a part of an outer peripheral surface of the base material left without cutting the base material when the outer edge is formed by cutting the base material, and when the cutting part () is worn out, the cutting part () is cut off and a new cutting part is machined on the shank part () while a part of outer peripheral surface of the shank part is left as the margin without cutting, the new cutting part having accuracy of coaxiality and an outer diameter identical to those of the cutting part (). 1. A reusing method of an end mill comprising a columnar shank part and a cutting part integrated with the shank part , whereinthe end mill has a margin which is a part of a circle having a diameter identical to a diameter of the shank part, the margin being provided on an outer edge of the cutting part in cross-section orthogonal to an axial direction;a base material of the end mill is machined in advance so as to have coaxiality having equal accuracy to coaxiality for the cutting part;the shank part is an unmachined part left without cutting the base material;the margin is a part of an outer peripheral surface of the base material left without cutting the base material when the outer edge is formed by cutting the base material; andwhen the cutting part is worn out, the cutting part is cut off and a new cutting part is machined on the shank part while a part of the outer peripheral surface of the shank part is left as the margin without cutting and without additional machining for ensuring formation of a new outer ...

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Номер записи: 39
30-03-2017 дата публикации

END MILL

Номер: US20170087645A1
Автор: HAIMER Franz Josef, SANHIETER Reinhold
Принадлежит: HAIMER GMBH

An end mill, preferably made of solid carbide, with a fastening section and a cutting area, in which the cutting area is formed by a core and three, four or five cutting edges arranged around core and running helically around the axis of rotation of the end mill, each one of which has a peripheral main cutting edge and a secondary cutting edge on the face of cutting area. In order to create an end mill simple to manufacture and optimized for drilling, at least one cutting edge on the face of cutting area has a single, flat or continuously curved front surface, which delimits the cutting edge in the longitudinal direction of the mill on face. 1. End mill , preferably made of solid carbide , with a fastening section and a cutting area in which the cutting area is formed by a core and three , four or five cutting edges arranged around core running helically around the axis of rotation of end mill , each one of which has a peripheral main cutting edge and a secondary cutting edge on a face of the cutting area , wherein at least one cutting edge on the face of cutting area has a single , flat or continuously curved front surface , which delimits the cutting edge in the longitudinal direction of the end mill on the face.2. End mill according to claim 1 , wherein the front surface of each cutting edge has a relief angle on the secondary cutting edge between 5° and 7° claim 1 , especially equal to 6° relative a plane perpendicular to the axis of rotation of the end mill.3. End mill according to claim 1 , wherein at least one secondary cutting edge has a curved trend.4. End mill according to claim 1 , wherein at least one secondary cutting edge has a protruding center distance in a radially outer area.5. End mill according to claim 1 , wherein a point thinning of core is provided on the face of cutting area between two adjacent cutting edges claim 1 , which has an angle from 30° to 40° relative to axis of rotation of end mill.6. End mill according to claim 5 , wherein the ...

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Номер записи: 40
30-03-2017 дата публикации

END MILL

Номер: US20170087646A1
Автор: HAIMER Franz Josef, SANHIETER Reinhold
Принадлежит: HAIMER GMBH

An end mill, preferably made of solid carbide, with a fastening section and a cutting area, in which the cutting area is formed by a core and three or four cutting edges running helically around the axis of rotation of the end mill and arranged around core; each of which has a peripheral main cutting edge and a secondary cutting edge on a face of the cutting area. On the face of the cutting area at least one point thinning of core is provided between two adjacent cutting edges. In order to create end mills that are simple to manufacture and optimized for drilling, the point thinning has an angle of 30° to 40° relative to the axis of rotation of the end mill. 1. End mill , preferably made of solid carbide with a fastening section and a cutting area , in which the cutting area is formed by a core and three or four cutting edges running helically around the axis of rotation of the end mill and arranged around core , each of which has a peripheral main cutting edge and a secondary cutting edge on a face of the cutting area , at least one point thinning of core being provided on the face of the cutting area between two adjacent cutting edges , wherein the point thinning has an angle of 30° to 40° relative to the axis of rotation of the end mill.2. End mill according to claim 1 , wherein the point thinning is formed as a recess in the area of face of cutting area that approaches the axis of rotation of the end mill in the direction from the fastening section to the face of the cutting area.3. End mill according to claim 1 , wherein the point thinning extends in the radial direction essentially for the axis of rotation of the end mill and delimits the secondary cutting surface in the area of the axis of rotation of the end mill.4. End mill according to claim 1 , wherein the cutting edges are unevenly distributed in the peripheral direction of the end mill.5. End mill according to claim 1 , wherein the cutting area includes a total of four cutting edges claim 1 , of which a ...

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Номер записи: 41
28-03-2019 дата публикации

End mill machining apparatus, cam apparatus, nc program, and machining method

Номер: US20190091778A1
Автор: Eiji Shamoto, Shunsuke FUJIMAKI, Takehiro HAYASAKA
Принадлежит: Nagoya University NUC

An end mill machining apparatus, a CAM apparatus, an NC program, and a machining method which suppress regenerative self-excited vibration and mode-coupling self-excited vibration. An end mill machining apparatus includes an end mill, and a control section for controlling the end mill. The ratio of the protrusion length of the end mill to the diameter of the end mill falls within a range of 5 to 50. The end mill is a variable pitch, uniform helix type or a variable helix type. The control section controls the end mill such that the contact angle between the end mill and a workpiece M 1 during machining becomes equal to or smaller than a critical contact angle θ lim .

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Номер записи: 42
13-04-2017 дата публикации

End Mill Having Teeth and Associated Flutes with Correlated Physical Parameters

Номер: US20170100786A1
Автор: SHPIGELMAN LEONID
Принадлежит:

An end mill includes a plurality of teeth and flutes. The teeth and their associated flutes include one or more correlated physical parameters. One such correlated parameter is that, at an axial location in a front half of an effective cutting length, at least one tooth of the plurality of teeth has a rake angle smaller than an average rake angle value of the plurality of teeth, and, at the same axial location, a flute preceding each such tooth has a helix angle larger than an average helix angle value of the plurality of flutes. 2. The finish end mill according to claim 1 , wherein claim 1 , at an axial location in the front half of the effective cutting length: the teeth have an average tooth area value claim 1 , with one or more teeth having a smallest tooth area value claim 1 , and one or more teeth having a largest tooth area value; the teeth have an average relief surface width value claim 1 , with one or more teeth having a smallest relief surface width value claim 1 , and one or more teeth having a largest relief surface width value; and claim 1 , at least one tooth has a tooth area greater than the average tooth area value and a relief surface width smaller than the average relief surface width value.3. The finish end mill according to claim 1 , wherein: the cutting portion has an effective cutting length greater than 2.5 D; at an axial location in the front half of the effective cutting length at least two of the teeth have different radial rake angle values claim 1 , at least some of the different radial rake angle values being different from all other non-identical values by 2° or more; and claim 1 , the flute depth of each flute increases with increasing distance from the shank.4. The finish end mill according to claim 1 , wherein at an axial location in the front half of the effective cutting length: at least three of the teeth have different radial rake angles claim 1 , at least some of the different radial rake angle values are different from all ...

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Номер записи: 43
21-04-2016 дата публикации

MILLING CUTTER

Номер: US20160107247A1
Автор: JIANG YI-MIN, LI JUN-QI, XU Long, ZHAN LI-FENG
Принадлежит:

A milling cutter is configured to process an edge of a workpiece to a required profile. The required profile includes a first portion and a second portion coupled to the first portion. The milling cutter includes a shank having a central axis, at least one first cutting edge, and at least one second cutting edge. The first cutting edge is configured to rotate around the central axis of the shank along a first rotation path to process the first portion of the predetermined profile, and the second cutting edge is configured to rotate around the central axis of the shank along a second rotation path to process the second portion of the predetermined profile. The first rotation path is different from, and connected to the second rotation path. 1. A milling cutter configured to process an edge of a workpiece to a required profile , the required profile comprises a first portion and a second portion coupled to the first portion , the milling cutter comprising:a shank having a central axis;at least one first cutting edge configured to rotate around the central axis of the shank along a first rotation path to process the first portion of the predetermined profile, andat least one second cutting edge configured to rotate around the central axis of the shank along a second rotation path to process the second portion of the predetermined profile;wherein the first rotation path is different from, and connected to the second rotation path.2. The milling cutter as claimed in claim 1 , wherein the first rotation path partially overlaps with the second rotation path.3. The milling cutter as claimed in claim 1 , wherein the first rotation path and the second rotation path are non-overlapping.4. The milling cutter as claimed in claim 1 , wherein the first rotation path is tangent to the second rotation path.5. The milling cutter as claimed in claim 1 , wherein the at least one first cutting edge and the at least one second cutting edge are alternatively arranged along a circumference ...

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Номер записи: 44
20-04-2017 дата публикации

MILLING HEAD AND METHOD OF USING SAME

Номер: US20170105491A1
Автор: SUNDMAN Arjen
Принадлежит:

Disclosed is a milling head for shaping a shoe support for an article of foot wear. The disclosed milling head includes abrasive surfaces that are configured to allow for the shaping of an unfinished block of support material on all of the top, side and medial arch area of the perimeter surfaces without removing the block of support material from a support such as a vacuum vise, and without the need to interchange milling heads. The disclosed milling head has a semi-spherical milling surface for milling a top surface of the shoe support and two conical milling surfaces for milling a perimeter surface and a medial arch area of the perimeter surface of the shoe support, respectively. The disclosed milling head saves costs of labor and time when shaping the block of support material. 1. A milling head having a plurality of milling surfaces for forming a shoe support from an unfinished block of support material , the milling head comprising:at least a first angled undercutting surface; and wherein each surface is provided with a cutting surface,', 'wherein the at least first angled undercutting surface is configured to perform milling a milling operation on a perimeter surface of the unfinished block of support material, and', 'wherein the curved surface is configured to perform milling on a top surface of the unfinished block of support material., 'a curved surface,'}2. The milling head according to claim 1 , further comprising: 'wherein the second angled undercutting surface is configured to perform a milling operation on the medial arch area of the perimeter surface of the unfinished block of support material.', 'at least a second undercutting surface provided with a cutting surface,'}3. The milling head according to claim 1 , further comprising: an attachment means configured for insertion into a chuck of a drill.4. The milling head according to claim 2 , further comprising: an attachment means configured for insertion into a chuck of a drill.5. The milling head ...

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Номер записи: 45
26-04-2018 дата публикации

Cutting tool and method for manufacturing the machined product

Номер: US20180111206A1
Автор: Shin Deguchi
Принадлежит: Kyocera Corp

In an embodiment, a cutting tool includes a holder that is a columnar body and includes a pocket in which an insert disposed. The pocket includes a first surface in contact with the insert, a second surface, and a projecting portion. The second surface is disposed further forward in a rotational direction of a rotational axis than the first surface, and disposed on a radial inner side of the holder. The projecting portion is disposed closer to a radial outer circumferential side of the holder than the first surface and projects forward in the rotational direction of the rotational axis. The second surface is inclined and comes closer to an outer circumference of the holder as going forward in the rotational direction of the rotational axis, in a front view of a first end.

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Номер записи: 46
09-06-2022 дата публикации

PERIPHERAL MILLING TOOL AND METHOD FOR ARRANGING CUTTING EDGES

Номер: US20220176470A1
Автор: ENDRES Frank
Принадлежит:

A circumferential milling tool () for cutting metal is described, which comprises a milling cutter body () that can be rotated about a tool axis () and has at least two cutting edge groups. The arrangement of the first cutting edge group results in a first average chip thickness for the cutting edges () of the first cutting edge group and a second average chip thickness for the cutting edges () of the second cutting edge group. The first average chip thickness and the second average chip thickness are substantially equal. A method for arranging cutting edges () on a circumferential milling tool () that can be rotated about a tool axis () is presented as well. 1. A circumferential milling tool for cutting metal ,{'sub': 1', '2, 'comprising a milling cutter body that can be rotated about a tool axis, on which at least two cutting edge groups are arranged, wherein the cutting edges of a first cutting edge group are arranged on a circular path which has a first diameter (d) and extends around the tool axis and the cutting edges of a second cutting edge group are arranged on a circular path which has a second diameter (d) and extends around the tool axis, wherein'}{'sub': 1', 'm1', 'z1', 'e1', '2', 'z2', 'e2', 'z1', 'e1', 'm2, 'the cutting edges of the first cutting edge group are arranged at a first setting angle (κ) and the cutting edges of the first cutting edge group are assigned a first average chip thickness (h) for a predetermined first tooth feed (f) and a predetermined first cutting width (A) and the cutting edges of the second cutting edge group are arranged on the milling cutter body at a second setting angle (κ) such that they are assigned a second tooth feed (f) and a second cutting width (A) which result from the predetermined first tooth feed (f) and the predetermined first cutting width (A) and which in turn result in a second average chip thickness (h) that is assigned to the cutting edges of the second cutting edge group,'}{'sub': m1', 'm2, 'wherein the ...

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Номер записи: 47
03-05-2018 дата публикации

INSERT TYPE TOOL AND THREAD MILL

Номер: US20180117685A1
Автор: Osawa Jiro, Yoda Tomonori
Принадлежит:

An insert portion () of a thread mill (A) is fixed to a leading end portion of a body (A) using screws (). The insert portion () is configured by overlaying an insert () for finish machining and an insert () for rough machining. On respective mating faces of the inserts (), convex portions and concave portions of the mating face of the insert () are overlaid with concave portions and convex portions of the mating face of the insert (). The thread mill (A) can cut a female screw in a hole formed in a workpiece by performing right-hand cut down-cut milling, for example. The inserts () simultaneously cut an inner peripheral surface of the hole, and the rough machining and the finish machining can thus be performed in a single pass. By the convex portions and the concave portions of the respective mating faces of the inserts () being overlaid with each other, the inserts () partially overlap in their respective thickness directions. As a result, a protrusion length of the insert portion () can be shortened. 111-. (canceled)12. An insert type tool comprising:a cylindrical body;a disc-shaped insert portion; anda fixing device that detachably fixes the insert portion to one end portion in an axial direction of the body, whereinthe insert portion can be configured by a single disc-shaped insert or by a plurality of the inserts coaxially overlaid with each other, an outer periphery of the insert including blade portions, convex portions respectively protruding from a center in a thickness direction of the insert to both sides in the thickness direction, the convex portions being most separated from the center; and', 'concave portions provided in sections excluding the convex portions, the concave portions respectively protruding from the center to the both sides in the thickness direction, and the concave portions being lower than the convex portions, and, 'the insert, on each of both faces, compriseswhen the plurality of the inserts are coaxially overlaid with each other, ...

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Номер записи: 48
04-05-2017 дата публикации

ROTARY CUTTING TOOL

Номер: US20170120349A1
Автор: HAIMER Franz-Josef, SANHIETER Reinhold
Принадлежит: Franz Haimer Maschinenbau KG

A rotary cutting tool having an axis of rotation, a shank area, and a cutting area. The rotary tool has chip flutes reaching as far as a core profile in the cutting area. In order to reduce vibrations of the rotary cutting tool and therefore to permit precise machining and high surface quality with long service lives, the center line of the core profile has a course that deviates from the axis of rotation of the rotary cutting tool and/or the core profile contains mutually alternating sections with increasing cross-sectional area and sections with decreasing cross-sectional area over the length of the cutting area. 1. A rotary cutting tool having an axis of rotation , a shank area and a cutting area , with the rotary cutting tool having chip flutes in the cutting area reaching as far as a core profile , wherein the path of the center line of the core profile deviates from the axis of rotation of the rotary cutting tool and/or the core profile , throughout the length of the cutting area , has a plurality of alternately disposed sections with an increasing cross-sectional area and sections with a decreasing cross-sectional area.2. The rotary cutting tool of claim 1 , wherein the center line of the core profile claim 1 , throughout the length of the cutting area claim 1 , extends along a spiral-shaped path.3. The rotary cutting tool of claim 2 , wherein the center line extending along a spiral-shaped path has a central axis that is congruent with the axis of rotation.4. The rotary cutting tool of claim 1 , wherein the center line of the core profile claim 1 , throughout the length of the cutting area claim 1 , extends along a sinusoidal path.5. The rotary cutting tool of claim 4 , wherein the sinusoidal center line intersects the axis of rotation of the rotary cutting tool.6. The rotary cutting tool of claim 1 , wherein the cross-sectional area of the core profile decreases in the direction from the shank area to the cutting area.7. The rotary cutting tool of claim 1 , ...

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Номер записи: 49
04-05-2017 дата публикации

Milling Inserts

Номер: US20170120350A1
Автор: Coffman David Garrett, OZOG David Alan, Stephenson David Alan
Принадлежит:

Milling tools configured to increase surface roughness are disclosed. The tool may include an elongated body having a longitudinal axis and a plurality of cutting inserts coupled to the body and spaced along the longitudinal axis, each cutting insert having a cutting edge. In one embodiment, the cutting edges may have an orientation that is oblique to the longitudinal axis of the elongated body. Each cutting edge may have a first end having a greater cutting radius than a second end. The cutting edges may be offset from the longitudinal axis of the elongated body by an offset angle. In another embodiment, the cutting edges may have a textured or rough surface profile. For example, the cutting edges may have a mean roughness (Rz) of at least 7.5 μm. The milling tools may increase the surface roughness of a milled engine bore to facilitate a subsequent rough honing process. 1. A milling tool comprising:an elongated body having a longitudinal axis; anda plurality of cutting inserts coupled to the body and spaced along the longitudinal axis, each cutting insert having a cutting edge;wherein the cutting edges have an orientation that is oblique to the longitudinal axis of the elongated body.2. The tool of claim 1 , wherein each cutting edge has a first end and a second end and the first end has a greater cutting radius than the second end.3. The tool of claim 2 , wherein the first end is a top end of the cutting edge and the second end is a bottom end of the cutting edge.4. The tool of claim 2 , wherein the first end is a bottom end of the cutting edge and the second end is a top end of the cutting edge.5. The tool of claim 2 , wherein the cutting radius of the first end is at least 5 μm greater than the second end.6. The tool of claim 2 , wherein the cutting radius of the first end is at least 10 μm greater than the second end.7. The tool of claim 2 , wherein the orientation of the cutting edges is adjustable.8. A milling tool comprising:an elongated body having a ...

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Номер записи: 50
04-05-2017 дата публикации

MILLING TOOL WITH INSERT COMPENSATION

Номер: US20170120352A1
Автор: Coffman David Garrett, OZOG David Alan, Stephenson David Alan
Принадлежит:

A milling tool is disclosed. The milling tool may include an elongated body having a longitudinal axis and a plurality of cutting inserts. The cutting inserts may each have a cutting edge and a cutting radius and be coupled to the body and spaced along the longitudinal axis. One or more of the plurality of cutting inserts may be adjustable (e.g., mechanically adjustable) between first and second cutting radii. A difference between the first and second cutting radii may be at least 10 μm. The milling tool may include cutting inserts having a plurality of different cutting radii. The milling tool may be configured to have a length that spans an entire height of an engine bore. The cutting inserts having different radii may compensate for dimensional errors in an engine bore diameter that occur when milling a deep pocket. 1. A milling tool comprising:an elongated body having a longitudinal axis; anda plurality of cutting inserts, each having a cutting edge and a cutting radius, coupled to the body and spaced along the longitudinal axis;wherein one or more of the plurality of cutting inserts are mechanically adjustable between first and second cutting radii.2. The tool of claim 1 , wherein a difference between the first and second cutting radii is at least 10 μm.3. The tool of claim 1 , wherein the one or more mechanically adjustable cutting inserts are secured to an attachment surface.4. The tool of claim 3 , wherein the one or more mechanically adjustable cutting inserts are configured to translate across the attachment surface.5. The tool of claim 1 , wherein the one or more mechanically adjustable cutting inserts are attached to a cartridge and the cartridge is attached to the elongated body.6. The tool of claim 1 , wherein all of the plurality of cutting inserts are mechanically adjustable between first and second cutting radii and a difference between the first and second cutting radii is at least 10 μm.7. The tool of claim 1 , wherein the plurality of cutting ...

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Номер записи: 51
25-08-2022 дата публикации

MILLING BIT WITH SPHERICAL ENDING FOR CNC MILLING OF INDUSTRIAL CLAY

Номер: US20220266357A1
Автор: Kamenov Kamen Petrov
Принадлежит:

An example milling bit comprises a shank and a working sector comprising a cutting anterior part, which is a portion of a hollow sphere, a cutting posterior part fixed to the shank and located between the shank and the spherical anterior part, at least one cutting tooth extending along an entire length of the working sector with a cutting edge, and at least one flute to the cutting tooth extending along length of the working sector following the path of the cutting edge. The spherical anterior part of the working sector is hollow and at least one cutting tooth in the anterior cavity region has a shape of a spherical shell element. 1. A milling bit for industrial clays and similar materials comprising:a shank; anda working sector including:a cutting anterior part representing part of a sphere,a cutting posterior part, fixed to the shank, located between the shank and the spherical anterior part,at least one cutting tooth, extending throughout the entire length of the working sector, with a cutting edge that is formed as a projection of a helicoid on the surface of the working sector and ending at the intersection of the axis of the milling bit and front spherical surface of the anterior part, wherein the forming helicoid has a helicoidal angle of 10°-45°, preferably from 20° to 35°,at least one helical flute to the cutting tooth extending along the length of the working sector following along the path of the cutting edge,wherein at least the spherical anterior part of the working section is hollow, wherein an open anterior cavity is formed by an inner surface of said at least one cutting tooth that the region of said anterior cavity is in the form of a spherical shell element with a wall thickness from 0.3 mm to 5 mm, wherein a wedge angle β is between 3°-40° at the anterior end of the cutting tooth.2. The milling bit according to claim 1 , wherein a rake angle θ of the cutting tooth at least in the anterior part of the working sector is between 45°-87°.3. The ...

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Номер записи: 52
16-04-2020 дата публикации

Dual cutting milling tools and related methods

Номер: US20200114437A1
Автор: Clifford D. Borowicz
Принадлежит: Boeing Co

Dual cutting milling tools for removing material from a workpiece include two cutting portions, with one cutting portion being configured for ruled milling, and the other cutting portion being configured for hemstitch milling. In this manner, the number of tool changes for a given manufacturing process may be reduced. Dual cutting milling tools include a first cutting portion and a second cutting portion both formed in a shank, with the first cutting portion being configured to perform hemstitch milling on the workpiece, and the second cutting portion being configured to perform ruled milling on the workpiece. Methods of removing material from a workpiece may include both hemstitch milling the workpiece with the first cutting portion of the dual cutting milling tool and performing ruled milling of the workpiece with the second cutting portion of the dual cutting milling tool, without changing tools in the milling machine.

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Номер записи: 53
10-05-2018 дата публикации

END MILL HAVING TEETH AND ASSOCIATED FLUTES WITH CORRELATED PHYSICAL PARAMETERS

Номер: US20180126469A1
Автор: SHPIGELMAN LEONID
Принадлежит:

An end mill includes a plurality of teeth and flutes. The teeth and their associated flutes include one or more correlated physical parameters. One such correlated parameter is that, at an axial location in a front half of an effective cutting length, at least one tooth of the plurality of teeth has a rake angle smaller than an average rake angle value of the plurality of teeth, and, at the same axial location, a flute preceding each such tooth has a helix angle larger than an average helix angle value of the plurality of flutes. 2. The finish end mill according to claim 1 , wherein claim 1 , at an axial location in the front half of the effective cutting length:the teeth have an average tooth area value, with one or more teeth having a smallest tooth area value, and one or more teeth having a largest tooth area value;the teeth have an average relief surface width value, with one or more teeth having a smallest relief surface width value, and one or more teeth having a largest relief surface width value; andat least one tooth has a tooth area greater than the average tooth area value and a relief surface width smaller than the average relief surface width value.3. The finish end mill according to claim 1 , comprising three or more teeth claim 1 , wherein at an axial location in the front half of the effective cutting length:at least three of the teeth have different radial rake angles, andat least some of the different radial rake angle values are different from all other non-identical values by 2° or more.4. The finish end mill according to claim 1 , wherein claim 1 , at an axial location in the front half of the effective cutting length:the flutes have an average helix angle value, with one or more flutes having a smallest helix angle value, and one or more flutes having a largest helix angle value;the teeth have an average radial rake angle value, with one or more teeth having a smallest radial rake angle value, and one or more teeth having a largest radial rake ...

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Номер записи: 54
03-06-2021 дата публикации

VARIABLE RADIUS GASH

Номер: US20210162520A1
Автор: BONFIGLIO Doug, CURTICIAN Steve, HAMIL Brian, RAK Jacob
Принадлежит:

A variable radius gash geometry may be provided on a variety of rotary cutting tools. The rotary cutting tools extend along a longitudinal axis, from a shank towards a cutting face that engages a material to be cut during a plunge or ramp operation, and a plurality of gashes may be provided in the cutting face of the rotary cutting tool. The gashes may each be a full radius gash, and the radius defining each of the gashes may be unique or different from one another and tangent to an axial rake face and clearance face surrounding the gash. 1. A variable radius gash geometry for a rotary cutting tool , the variable radius gash geometry comprising:a plurality of gash grinds each associated with an end cutting edge, wherein each of the gash grinds is defined by a unique radius such that the end cutting edges have equal length.2. The variable radius gash geometry of claim 1 , wherein each of the gash grinds is a full radius gash grind that is tangent to an axial rake face and a clearance face.3. The variable radius gash geometry of claim 2 , wherein the axial rake face and the clearance face associated with each of the plurality of gash grinds are formed via the gash grind associated therewith.4. The variable radius gash geometry of claim 1 , wherein the end cutting edges are each formed via the gash grind associated therewith.5. The variable radius gash geometry of claim 1 , wherein each of the end cutting edges is associated with a flute claim 1 , the flutes having an unequal flute indexing arrangement.6. A variable radius gash geometry for a rotary cutting tool claim 1 , the variable radius gash geometry comprising:a plurality of gash grinds each associated with an end cutting edge and each tangent to an axial rake face and a clearance face, wherein each of the gash grinds develops the end cutting edge associated therewith with a length equal to the other end cutting edges.7. The variable radius gash geometry of claim 6 , wherein each of the gash grinds is defined by ...

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Номер записи: 55
17-05-2018 дата публикации

MONOLITHIC CERAMIC END MILL CUTTER SET HAVING A HELIX ANGLE IN THE INTERVAL OF 28° TO 43°

Номер: US20180133810A1
Автор: SERT ALAGAÇ Melike, YILMAZ Ugur Evrensel
Принадлежит:

The invention is a monolithic end-mill cutter set (A) that can be made of ceramic and/or other materials having high strength and toughness and comprising a shank part (B) along a longitudinal axis () and a cutter part (C), comprising: a cutting diameter () varying between 2 to 20 mm, at least one web thickness () found at a blade () part, at least one helix angle () having a cutting edge () thereon, a core diameter () that is at least 0.7 times the cutting diameter (), at least one corner radius () found at the tip part of the blades () between the flutes () and axial and positive radial rake angles () at which cutting operation is made. It has a wide helix angle interval and a positive rake angle. Titanium Aluminium Nitride TiAlN coating can be made on the monolithic end-mill cutter set (A) via PVD coating method in order to extend the service life of the end-mill cutter set (A), increase the abrasion resistance, and minimize the problem of sticking of rake on the cutter set (joining). 14. A monolithic end-mill cutter set (A) made of ceramic and comprising a shank part (B) along a longitudinal axis () and a cutter part (C) , characterized in that the end mill cutter set comprises:{'b': '1', 'a cutting diameter () varying between 2 to 20 mm,'}{'b': 18', '26, 'at least one web thickness () found at a blade () part,'}{'b': 10', '13, 'at least one helix angle () having a cutting edge () thereon,'}{'b': 16', '1, 'a core diameter () that is at least 0.7 times the cutting diameter (),'}{'b': '10', 'the helix angle () that is between 28 to 43 degrees, depending on characteristics of a material to be processed,'}{'b': 5', '26', '9', '17, 'at least one corner radius () found at a tip part of the blade () part between a plurality of flutes () and an axial rake angle and positive radial rake angle () at which a cutting operation is made.'}2941826. The end-mill cutter set (A) according to claim 1 , characterized in that claim 1 , a helical structure found at edges of the ...

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Номер записи: 56
28-05-2015 дата публикации

Rotary Cutting Tool Having A Predetermined Number Of Left And Right Handed Helical Flutes And End Face Cutting Teeth

Номер: US20150147127A1
Автор: Segal Igor, SHPIGELMAN LEONID
Принадлежит: Iscar, Ltd.

A rotary cutting tool, having a longitudinal axis, includes cutting and mounting portions. The cutting portion includes an end face surface and a peripheral surface extending therefrom. The peripheral surface includes respective pluralities of main and auxiliary flutes that extend helically with opposite hand about the longitudinal axis. The cutting portion includes a plurality of evenly circumferentially distributed end gashes and a plurality of end face cutting teeth. The number of main flutes and auxiliary flutes are different, each being wholly divisible by, and greater than, the number of end face cutting teeth. In each cross sectional view of the cutting portion an imaginary contour line defined by a peripheral contour of the peripheral surface of one of the end face cutting teeth is in rotationally aligned relationship, about the longitudinal axis, with the peripheral contour of the peripheral surfaces of all other end face cutting teeth. 1202020. A rotary cutting tool () , having a longitudinal axis (A) about which the rotary cutting tool () is rotatable in a direction of rotation (R) , the rotary cutting tool () comprising:{'b': 22', '24', '22, 'claim-text': [{'b': 28', '30', '28', '24', '30', '32', '34, 'an end face surface (), intersected by the longitudinal axis (A), and a peripheral surface () extending from the end face surface () towards the mounting portion (), the peripheral surface () comprising respective pluralities of main and auxiliary flutes (, ) recessed therein that extend helically with opposite hand about the longitudinal axis (A);'}, {'b': 48', '28', '48', '54', '56', '28', '54', '48', '42', '42', '30', '28', '32, 'claim-text': [{'b': 32', '34', '48, 'the number of main flutes () and auxiliary flutes () are different, each being wholly divisible by, and greater than, the number of end face cutting teeth ();'}, {'b': 42', '32, 'the end gashes () are evenly circumferentially distributed with respect to the main flutes (); and'}, {'b': 22', ...

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Номер записи: 57
24-05-2018 дата публикации

SURFACE ROUGHENING TOOL AND METHOD

Номер: US20180141136A1
Автор: Agapiou John S., Herold Michael, KRAMADHATI Narasimha, Kramer Martin S.
Принадлежит:

A tool insert includes first, second, and third teeth arranged on a surface of the tool insert. The first tooth is arranged at a proximal end of the tool insert surface and has an angled leading end and a first tooth height. The second tooth is spaced from the first tooth by a first distance along the surface of the tool insert and has a second tooth height greater than the first tooth height. The third tooth is spaced from the second tooth by a second distance along the surface of the tool insert and has an extending angled portion. The first tooth forms a first groove in a bore surface. The second tooth increases the depth of the first groove. The third tooth provides at least one micro-scratch to one of the first groove and the bore surface. 1. A tool insert comprising:a first tooth arranged on a surface of the tool insert at a proximal end thereof, the first tooth having an angled leading end and a first tooth height;a second tooth spaced from the first tooth by a first distance along the surface of the tool insert, the second tooth having a second tooth height greater than the first tooth height; anda third tooth spaced from the second tooth by a second distance along the surface of the tool insert, the third tooth having an extending angled portion, wherein the first tooth is configured to form a first groove in a bore surface, the second tooth is configured to increase the depth of the first groove, and the third tooth is configured to provide at least one micro-scratch to one of the first groove and the bore surface.2. The tool insert of claim 1 , wherein the second tooth is configured in one of a triangular claim 1 , rectangular claim 1 , trapezoidal claim 1 , and dovetail form.3. The tool insert of claim 1 , further comprising a fourth tooth spaced from the third tooth by a third distance and having the second tooth height claim 1 , and a fifth tooth spaced from the fourth tooth by the second distance and having an extending angled portion similar to the ...

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Номер записи: 58
14-08-2014 дата публикации

INTERNAL MILLING CUTTER

Номер: US20140227048A1
Автор: Baer Juergen Thomas, Gruenler Jan, Heinloth Markus
Принадлежит:

An internal milling cutter for producing a recess terminating in a radius in a workpiece, in particular for milling a crankshaft, comprises a tool holder having interchangeable cutting inserts detachably attached thereto. For the production of the radius, a plurality of first interchangeable cutting inserts are provided, which are arranged one after another in the direction of cut and have cutting edges which produce complementary portions of the radius, wherein the first interchangeable cutting inserts for producing the radius are identically configured. 1. An internal milling cutter for producing in a workpiece a recess terminating in a radius , comprising a tool holder and a plurality of first interchangeable cutting inserts detachably attached thereto , wherein the plurality of first interchangeable cutting inserts are arranged one after another in the direction of cut having cutting edges which produce complementary portions of the radius , wherein the plurality of first interchangeable cutting inserts are identical to each other.2. The internal milling cutter as claimed in claim 1 , wherein the radius is formed by two of the plurality of first interchangeable cutting inserts having complementary cutting edges.3. The internal milling cutter as claimed in claim 1 , wherein the plurality of first interchangeable cutting inserts are of disk-shaped configuration and are oriented with one end face substantially perpendicular to the direction of cut.4. The internal milling cutter as claimed in claim 1 , wherein the plurality of first interchangeable cutting inserts have rounded and straight peripheral portions.5. The internal milling cutter as claimed in claim 4 , wherein the rounded and straight peripheral portions alternate when coming into contact with the workpiece.6. The internal milling cutter as claimed in claim 4 , wherein the tool holder is provided with at least one contact surface for the positioning and indexing of the straight peripheral portion of the ...

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Номер записи: 59
25-05-2017 дата публикации

Cemented Carbide Corner Radius End Mill with Continuously Curved Rake Ridge and Helical Flute Design

Номер: US20170144234A1
Автор: SHPIGELMAN LEONID
Принадлежит:

A corner radius end mill includes a tooth adjacent a helically extending flute. The tooth includes axial and radial relief surfaces connected by a corner relief surface, as well as rake surface having a rake ridge. The rake ridge is continuously curved from a bisector line until at least an axial location rearward of the corner relief surface. 11012. A cemented carbide corner radius end mill () having a rotation axis () defining forward and rearward directions (D , D) , and comprising:{'b': 14', '16', '18, 'front and rear ends (, ) and a peripheral surface () extending therebetween;'}{'b': 20', '14, 'a cutting portion () extending rearwardly from the front end (); and'}{'b': 22', '20, 'a shank portion () located rearward of the cutting portion ();'}{'b': 20', '14, 'sub': E', 'E, 'the cutting portion () having a cutting portion diameter (D) at the front end () and an effective cutting length Land comprising{'b': 24', '14', '18, 'integrally formed teeth () extending from the front end () to the peripheral surface (); and'}{'b': 26', '24, 'a helical flute () located between each pair of adjacent teeth () and having a helix angle H fulfilling the condition: 25°≦H≦60°;'}{'b': '24', 'an index angle S subtended between each pair of adjacent teeth ();'}{'b': '24', 'each tooth () comprising{'b': '28', 'a relief surface ();'}{'b': '30', 'a rake surface ();'}{'b': 32', '28', '32, 'a cutting edge () formed at an intersection of the relief and rake surfaces (, ); and'}{'b': 34', '36, 'sub': C', 'C', 'C', 'A', 'R', 'B, 'a corner () comprising a circular arc profile defining a portion () of a circle (I) having a circle center point (C), a circle radius (R), axial and radial tangent lines (L, L), and a bisector line (L);'}{'b': '28', 'the relief surface () comprising{'b': 28', '16, 'an axial relief surface (A) at the front end ();'}{'b': 28', '18, 'a radial relief surface (B) at the peripheral surface (); and'}{'b': 28', '28', '28, 'a corner relief surface (C) connecting the axial ...

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Номер записи: 60
31-05-2018 дата публикации

DOUBLE-SIDED CIRCULAR CUTTING INSERT AND INDEXABLE ROTARY CUTTING TOOL

Номер: US20180147642A1
Автор: Takahashi Hayato
Принадлежит:

In a circular cutting insert of the present invention, the upper side surface and the lower side surface each include: a plurality of planar restraining faces which are disposed sequentially in a circumferential direction of the upper side surface and the lower side surface so as to interpose a joint portion between each of the planar restraining faces and each have a side disposed on the side surface-intermediate line (N); and a plurality of antivibration restraining faces which are each disposed between two planar restraining faces adjacent through the joint portion and each include an inclined face, and the restraining faces of the lower side surface are disposed so as to be shifted with respect to the restraining faces of the upper side surface by a predetermined angle (α) around a central axis of a screw insertion hole. 1. A double-sided circular cutting insert comprising:a top surface and a bottom surface configured to be detachably attached to an insert mounting seat and formed into a circular shape in a planar view of the circular cutting insert;a side surface connecting the top surface and the bottom surface;a screw insertion hole penetrating from the top surface to the bottom surface; andcutting edges formed on intersecting ridgelines at which the top surface and the bottom surface intersect with the side surface, whereinwhen a plane bisecting the circular cutting insert in a thickness direction is referred to as an intermediate plane (M) of the circular cutting insert, an imaginary ridgeline at which the intermediate plane (M) intersects with the side surface is referred to as a side surface-intermediate line (N), the side surface between the side surface-intermediate line (N) and the top surface is referred to as an upper side surface, and the side surface between the side surface-intermediate line (N) and the bottom surface is referred to as a lower side surface, a plurality of planar restraining faces disposed sequentially in a circumferential ...

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Номер записи: 61
11-06-2015 дата публикации

SHANK DRILL

Номер: US20150158095A1
Автор: STRASMANN Martin
Принадлежит:

A shank cutter has plural circumferential cutting edges which run in a helical manner in the region of its cutting section and of which at least one critical number are equipped in each case with a preferably essentially flattened roughing profile with chip-separating grooves with rounded bases, so that the chip-separating grooves of cutter ridges which are adjacent in the circumferential direction are axially offset relative to each other. To create a tool which provides long service life by combined advantages of a vibration-stabilized finishing cutter and a conventional roughing cutter, at least one circumferential cutting edge has an angle of twist which differs from that of another circumferential cutting edge. In addition, the chip-separating grooves of the circumferential cutting edges which are equipped with a roughing profile in each case merge into a preferably essentially flattened central section of the roughing profile by means of a predefined flank radius. 1. An end mill cutter , comprising:a cutting section; anda plurality and even number of peripheral cutting edges which run in a helical manner in a region of the cutting section,at least two cutting edges each being equipped with a flattened roughing profile,each flattened roughing profile having chip-separating grooves with rounded bases,the chip-separating grooves of a first cutter ridge being axially offset from the chip-separating grooves of a second cutter ridge, the second cutter ridge adjacent to the first cutter ridge in a peripheral direction,at least one of the peripheral cutting edges having an angle of twist which differs from an angle of twist of another one of the peripheral cutting edges,angles of twist of adjacent cutting edges differing by from 1 degree to 6 degrees,each peripheral cutting edge lying diametrically opposite to, and having a similar angle of twist as, another peripheral cutting edge,the pitch of the end mill cutter equal in a radial plane lying in the region of the ...

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Номер записи: 62
11-06-2015 дата публикации

METHOD OF MANUFACTURING AN ELBOW, CUTTING TOOL, AND ELBOW

Номер: US20150159796A1
Автор: Horiguchi Nobuo
Принадлежит:

Provided is a method of manufacturing an elbow, including: a first cutting step of cutting a material by relatively moving a cutting section of a cutting tool, which is formed of at least apart of a substantially spherical shape, along an inner side surface of the elbow to be finished in a direction from a first end surface to a second end surface of the material; and a second cutting step of cutting the material by relatively moving the cutting section along the inner side surface of the elbow to be finished in a direction from the second end surface to the first end surface of the material. 1. A cutting tool , comprising:a cutting section formed of at least a part of a substantially spherical shape, the cutting section comprising a plurality of cutting edges; anda shaft section extending from the cutting section.2. The cutting tool according to claim 1 , wherein the cutting section comprises a plurality of ridge portions each formed into a ridge shape along a surface of the cutting section so as to extend from one end of the cutting section claim 1 , the plurality of ridge portions each comprising the plurality of cutting edges on a side surface thereof.3. The cutting tool according to claim 2 , wherein cutting edges of a plurality of adjacent ridge portions among the plurality of ridge portions are arranged while being shifted from each other with respect to a rotational direction.4. The cutting tool according to claim 2 , wherein each of the plurality of ridge portions comprises a plurality of accommodating portions configured to accommodate the plurality of cutting edges in a freely removable manner claim 2 , respectively.5. The cutting tool according to claim 1 , wherein a diameter of the shaft section is one-fifth to two-fifths as large as a diameter of the substantially spherical shape.6. The cutting tool according to claim 1 , wherein the cutting section has a shape obtained by cutting away portions positioned on the shaft section and on an opposite side to ...

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Номер записи: 63
07-06-2018 дата публикации

DIMPLES PROCESSING METHOD BY MEANS OF END MILLING AND END MILL

Номер: US20180154461A1
Автор: NISHIO Satoru
Принадлежит: KANEFUSA KABUSHIKI KAISHA

An end mill includes a major-diameter shank, a cone-shaped connector portion disposed at the end of the shank, a minor-diameter body disposed by way of the connector portion coaxially therewith, a toothed element disposed at the leading end of the body, an installation recess dented slightly in the toothed element, and a cutting edge held in the installation recess so as to swell in the shape of an arc to protrude from an outer peripheral face of the body. 1. A dimples processing method by means of end milling , the dimples processing method being adapted for processing dimples , which are separated away from each other , by rotary cutting a surface of a workpiece using an end mill provided with one toothed element which comprises one or two cutting edges disposed on an outer peripheral face of a rod-shaped body: and the dimples processing method forming the dimples in a quantity of one or two by turning the body once.2. The dimples processing method by means of end milling as set forth in claim I , wherein:the body includes a conical portion reducing diametrically as heading toward a leading end thereof: andthe one toothed element is disposed on an outer peripheral face of the conical portion.3. The dimples processing method by means of end milling as set forth in claim 1 , wherein an inclination angle of an axial center in the body with respect to a tangential face in the workpiece is set to fall in a range of from −20 deg. to +75 deg. at a contact position between the body and the workpiece.4. The dimples processing method by means of end milling as set forth in claim 1 , wherein the end mill turns around an axial center claim 1 , and the axial center also moves in compliance with a superficial configuration of the workpiece.5. A dimples processing method by means of end milling claim 1 , the dimples processing method being adapted for processing dimples claim 1 , which are separated away from each other claim 1 , by rotary cutting a surface of a workpiece using ...

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Номер записи: 64
23-05-2019 дата публикации

Triangular-shaped indexable cutting insert having recessed side surfaces and rotary cutting tool

Номер: US20190151964A1
Автор: Yuri Men
Принадлежит: Iscar Ltd

An indexable cutting insert has opposing upper and lower end surfaces, and a peripheral surface including three side surfaces circumferentially alternating with three corner surfaces. The three side surfaces define an imaginary triangle and an imaginary hexagon. Each corner surface intersects the upper end surface to form an upper corner peripheral edge having a primary cutting edge. In a top view, each triangle side traverses two upper corner peripheral edges, imaginary lines tangential to the end points of each primary cutting edge are either collinear or form an obtuse angle greater than 175 degrees, each primary cutting edge has a primary length greater than half the hexagon side length, and at least one triangle side traverses each primary cutting edge. The insert is removably secured in a rotary cutting tool such that one of the upper corner peripheral edges contains an axially forwardmost point of the insert's upper peripheral edge.

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Номер записи: 65
16-06-2016 дата публикации

METHOD OF MACHINING A MOTION-SUPPORTING SURFACE OF A CYLINDER OF AN INTERNAL COMBUSTION ENGINE

Номер: US20160169149A1
Автор: Hahn Karlheinz, WAGENER Wolfram, WOISETSCHLAEGER Patrick
Принадлежит:

A method for working a wall of a cylinder of an internal combustion engine, in which peripheral grooves are machined into the wall, wherein at least one annular saw blade, which is provided on a circumference with a multiplicity of cutting teeth, is used for introducing the grooves, wherein the saw blade is moved so as to rotate about its longitudinal axis and on an annular path. A subsequent forming operation on the lands that are formed between neighboring grooves causes the formation of undercuts that can improve the connection of the wall of the cylinder to a subsequently applied coating layer. 1. A method of machining a wall of a cylinder of an internal combustion engine in which grooves extending around in a loop are introduced into the wall by a stock-removing process , such that to introduce the grooves , at least one annular saw-blade is used which is provided at its circumference with a plurality of cutting teeth , the saw-blade being moved in rotation on its longitudinal axis and along an annular path.2. The method of claim 1 , wherein the width of the cutting teeth corresponds to the intended width of the grooves.3. The method of claim 1 , including using a plurality of saw-blades arranged in parallel.4. The method of claim 3 , wherein the distance between adjacent saw-blades is a multiple of the width of lands formed between the grooves in the final state of the wall.5. The method of wherein the annular path is not circular.6. The method of claim 5 , wherein the grooves are introduced in at least two passes claim 5 , with the non-circular annular paths along which the saw-blade is moved in the two passes not being identical.7. The method of claim 5 , wherein the annular path is stellate.8. The method of including bevelling or laterally radiusing the cutting teeth.9. The method of including reshaping the lands formed between the grooves to form undercuts.10. The method of claim 9 , wherein the lands are reshaped by roller burnishing.11. The method of ...

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Номер записи: 66
30-05-2019 дата публикации

SLOTTING TOOL BODY HAVING INWARDLY OFFSET INSERT RECEIVING SLOT, ROTARY SLOT CUTTING TOOL HAVING SAME AND CUTTING INSERT

Номер: US20190160555A1
Автор: HAROUCHE David BEN, Hecht Gil
Принадлежит: Iscar, Ltd.

A slotting tool body includes a disc-like cutter portion and a shank portion projecting rearwardly therefrom. The cutter portion includes a resilient clamping portion having a peripherally disposed insert receiving slot. The shank portion includes a peripherally disposed forward shank recess that is axially adjacent the cutter portion. A radially inward portion of the insert receiving slot merges in the rearward direction with the forward shank recess. A cutting insert is releasably and resiliently clamped in the insert receiving slot to form a rotary slot cutting tool. The cutting insert includes two cutting portions that each include a long and short insert lateral extension, the long insert lateral extension being longer than the short insert lateral extension. The longest insert lateral extensions are orated on opposite sides of the cutting insert. 1222222. A slotting tool body () , having a body central axis (B) that defines opposite forward and rearward directions (D , D) and about which the slotting tool body () is rotatable in a rotational direction (R) , the slotting tool body () comprising:{'b': 26', '38, 'a disc-like cutter portion () comprising a resilient clamping portion having a peripherally disposed insert receiving slot (); and'}{'b': 56', '26', '56', '58', '60', '58', '26, 'claim-text': {'b': 38', '60, 'sub': 'R', 'a radially inward portion of the insert receiving slot () merges in the rearward direction (D) with the forward shank recess ().'}, 'a shank portion () projecting rearwardly from the cutter portion (), the shank portion () comprising a shank peripheral surface () which extends circumferentially about the body central axis (B) and a forward shank recess () recessed in, and opening out to, the shank peripheral surface () adjacent to the cutter portion (); wherein222265622. The slotting tool body () claim 1 , according to claim 1 , wherein the cutter portion () and the shank portion () are integrally formed so that the slotting tool body () ...

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Номер записи: 67
11-09-2014 дата публикации

MONOLITHIC CERAMIC END MILL

Номер: US20140255113A1
Автор: DAVIS Danny Ray, Landwehr Sean Erin, Yeckley Russell Lee
Принадлежит: KENNAMETAL INC.

End mills are disclosed which may be made monolithically of ceramic or other materials. The cutting portions of the end mills have lengths of cut that are no more than twice their cutting diameters and cores which are at least 0.7 times their cutting diameters. Their axial blades have cutting edges with negative radial rake and are separated by helical flutes. Their cutting ends have negative axial rake and are gashed ahead of center and have radial cutting edges with negative rake. Such end mills also have radiused corners and gashes transitioning from radial to axial at a flute. Methods of milling materials using such ceramic end mills are also disclosed.

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Номер записи: 68
23-06-2016 дата публикации

Cutting tool with asymmetric structures on cutting teeth

Номер: US20160175944A1
Автор: Hai-Qing Zou, Yin Chuang, Yin-Xian Chen, Yu-Ting Lyu, Zai-Fa Chen
Принадлежит: METAL INDUSTRIES RESEARCH AND DEVELOPMENT CENTRE

A cutting tool with asymmetric structures on cutting teeth has multiple toothed surfaces. Each of the toothed surfaces has multiple groove structures dividing a side edge of the toothed surface into the cutting teeth. Since the groove structures of the toothed surfaces are arranged in an asymmetric and complementary manner, contact areas between the cutting teeth on the toothed surfaces of the cutting tool and a workpiece are reduced. The cutting teeth on the toothed surfaces of the cutting tool are not worn and broken easily. When the cutting tool is used for cutting hard brittle material, machining quality, accuracy, and efficiency are enhanced.

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Номер записи: 69
23-06-2016 дата публикации

MULTI-FLUTE BALL END MILL

Номер: US20160175948A1
Автор: SAKAI Shinjiroh
Принадлежит: Mitsubishi Hitachi Tool Engineering, Ltd.

A multi-flute ball end mill comprising a shank portion, a cutting edge portion having a ball-shaped tip portion, and 3 or more cutting edges formed in the cutting edge portion; each cutting edge being constituted by a peripheral cutting edge having a twist angle η of 35-45°, and a ball-end cutting edge having a twist angle μ at the outermost peripheral point, the twist angle η and the twist angle μ meeting the relation of η−μ≦7°, such that the ball-end cutting edge is smoothly connected to the peripheral cutting edge; the ball-end cutting edge having a radial rake angle of −37° to −11°; the peripheral cutting edge having a radial rake angle of 2-8°; and a center-lowered, inclined cutting edge integrally extending from a tip end of each ball-end cutting edge to a rotation center point, in a tip end portion of the ball portion near the rotation center point. 19-. (canceled)10. A multi-flute ball end mill comprising a shank portion rotating around a rotation axis , a cutting edge portion having a ball-shaped tip portion , and 3 or more cutting edges formed in said cutting edge portion;each cutting edge being constituted by a peripheral cutting edge having a twist angle η of 35-45°, and a ball-end cutting edge having a twist angle μ at the outermost peripheral point, said twist angle η and said twist angle μ meeting the relation of η−μ≦7°, such that said ball-end cutting edge is smoothly connected to said peripheral cutting edge;said ball-end cutting edge having a radial rake angle of −37° to −11°, and said peripheral cutting edge having a radial rake angle of 2-8°, in a range from 0.1D to 0.4D from a connecting point of each center-lowered, inclined cutting edge and each ball-end cutting edge, wherein D is a diameter of said cutting edge portion;said center-lowered, inclined cutting edge integrally extending from a tip end of each ball-end cutting edge to a rotation center point, in a tip end portion of said ball portion near said rotation center point; anda second ...

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Номер записи: 70
28-06-2018 дата публикации

CUTTING TOOL AND METHOD FOR MANUFACTURING CUT WORKPIECE

Номер: US20180178295A1
Автор: Yamamoto Masahiro
Принадлежит: KYOCERA CORPORATION

In an embodiment, a cutting tool includes a holder and a cutting insert. The holder is elongated and includes an insert pocket that is located on a side of a first end. The cutting insert is secured to the insert pocket. The cutting tool further includes a clamp that fastens the cutting insert in the insert pocket, and a screw that comes in contact with the cutting insert and is secured to the insert pocket. The screw includes a first surface including a first engagement portion on a first surface that is located on a side of the first end. The first engagement portion is located within a through-hole included in the screw in a front view of the first end. 1. A cutting tool , comprising:a holder elongated, extending from a first end to a second end along a rotation axis, and comprising an insert pocket on a side of the first end;a cutting insert secured to the insert pocket, and comprising a cutting edge and a through-hole;a clamp member securing the cutting insert to the insert pocket; anda screw inserted in the insert pocket, being in contact with the cutting insert, and comprising a first engagement portion on a first surface thereof on a side of the first end, the first engagement portion being located within the through-hole in a front view of the first end.2. The cutting tool according to claim 1 , wherein the first engagement portion is located inside the through-hole.3. The cutting tool according to claim 1 , wherein the first engagement portion has a concave shape.4. The cutting tool according to claim 2 , wherein the screw includes:a first portion comprising a thread groove, screwed into the insert pocket;a second portion comprising the first surface, inserted in the through-hole; anda third portion located between the first portion and the second portion, located between the cutting insert and the insert pocket, and being in contact with the cutting insert and the insert pocket.5. The cutting tool according to claim 4 , whereinthe screw comprises an ...

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Номер записи: 71
29-06-2017 дата публикации

MACHINING DEVICE AND MACHINING METHOD

Номер: US20170182572A1
Автор: Takahashi Hikaru
Принадлежит:

The present invention achieves a machining apparatus which can easily be composed and a machining method which can perform gear machining or splined shaft machining easily by using an existing lathe. More specifically, the invention achieves a machining apparatus comprising: a cutter which includes a blade part formed in the shape of a ring around a peripheral surface thereof and which is driven to rotate about an axis thereof; a workpiece holder which holds a workpiece W rotatably; and a cutter driver which moves the cutter and the workpiece W relative to each other along an axial direction, wherein a gear or a splined shaft is formed on the peripheral surface of the workpiece W by synchronizing the rotation of the workpiece W with the relative movement of the cutter and the workpiece W and by rotating the cutter and wherein a plurality of the blade parts are disposed side by side along the axis, the cutter driver drives the cutter to rotate in one direction around the axis and to reciprocate relative to the workpiece W along the axis, the workpiece holder rotates the workpiece W in a forward/reverse direction in accordance with reciprocation of the cutter and cutting is performed on the workpiece W so as to form thereon an external shape of a gear or a splined shaft by placing each of the blade parts of the cutter in contact with the peripheral surface of the workpiece W. 1. A machining apparatus comprising:a cutter which includes a blade part formed in the shape of a ring around a peripheral surface thereof and which is driven to rotate about an axis thereof;a workpiece holder which holds a workpiece rotatably; anda cutter driver which moves the cutter and the workpiece relative to each other along an axial direction of the cutter, whereinan external shape of a gear or a shaft having a gear-shaped cross-section is formed on the peripheral surface of the workpiece by synchronizing the rotation of the workpiece with the relative movement of the cutter and the ...

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Номер записи: 72
09-07-2015 дата публикации

MILLING TOOL

Номер: US20150190867A1
Автор: ROMAN Stefan, VIKLUND Per
Принадлежит:

A face milling tool includes a tool body having a central rotation axis around which the tool is rotatable, and at least one insert seat formed in a transition between a front end and an envelope surface of the tool. The tool further includes at least one cutting insert mounted in the insert seat, the cutting insert having an upper side defining an upper extension plane, a cutting edge extending around the circumference of the upper side, and a lower side defining a lower extension plane directed towards the bottom support surface of the insert seat. A center axis extends perpendicularly through the upper and the lower extension planes. The tool is configured such that a main cutting edge portion is at an entering angle κ smaller than 80° and such that the upper extension plane is at a radial tipping-in angle −60°≦γ≦−25° and at an axial tipping-in angle −20°≦γ≦0°, such that an angle of inclination λ of the main cutting edge portion is within the range 15°≦λ≦50°. 1. A face milling tool configured for chip-removing machining comprising:a tool body including a front end and a rear end, between which a central rotation axis extends around which the tool is rotatable in a direction of rotation, and at least one insert seat formed in a transition between the front end and an envelope surface extending between the front end and the rear end of the tool body, the at least one insert seat having a bottom support surface, wherein a chip pocket is provided in front of the at least one insert seat in the direction of rotation of the tool; and{'sub': f', 'm', 'm', 'm', 'f', 'f, 'at least one cutting insert securely mounted in the at least one insert seat, the at least one cutting insert including an upper side defining an upper extension plane, a cutting edge extending around the circumference of the upper side, a lower side defining a lower extension plane parallel to the upper extension plane, the lower side having a support face directed towards the bottom support surface of ...

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Номер записи: 73
07-07-2016 дата публикации

FACE MILLING TOOL

Номер: US20160193670A1
Автор: KOPTON PETER
Принадлежит: Audi AG

A milling tool for face milling a substantially flat workpiece surface includes at least one main cutting element rotatable in a rotation direction about a tool axis oriented at a right angle to the workpiece surface and movable transversely to the tool axis and along the workpiece surface. The main cutting element includes a face cutter having a radially outer cutting edge corner and adapted to remove material from the workpiece surface up to maximal a nominal size. At least one clearance groove cutting element is provided and leads the main cutting element in the rotation direction to produce in the workpiece surface a clearance groove, in which the radially outer cutting edge corner of the main cutting element is guided substantially without being subjected to cutting stress. 111-. (canceled)12. A milling tool for face milling a substantially flat workpiece surface , said milling tool rotatable in a rotation direction about a tool axis oriented at a right angle to the workpiece surface and movable transversely to the tool axis and along the workpiece surface , said milling tool comprising:at least one main cutting element including a face cutter having a radially outer cutting edge corner and adapted to remove material from the workpiece surface up to maximal a nominal size; andat least one clearance groove cutting element leading the main cutting element in the rotation direction and producing in the workpiece surface a clearance groove, in which the radially outer cutting edge corner of the main cutting element is guided substantially without being subjected to cutting stress.13. The milling tool of claim 12 , wherein the main cutting element and the clearance groove cutting element are two components separate from each other.14. The milling tool of claim 12 , wherein the main cutting element and the clearance groove cutting element are integrated in a common cutting element.15. The milling tool of claim 12 , wherein the radially outer cutting edge corner of ...

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Номер записи: 74
07-07-2016 дата публикации

CUTTING TOOL

Номер: US20160193671A1
Автор: KAMIKUBO Toshitaka
Принадлежит:

In a cutting tool according to an aspect of the present invention, a first cutter and a second cutter are attached to a holder. A projection amount of the first cutter that projects substantially in the horizontal direction from the holder is greater than a projection amount of the second cutter that projects substantially in the horizontal direction from the holder. A cutting resistance of the first cutter to an object to be cut is smaller than a cutting resistance of the second cutter to the object to be cut so that a rotation axis of the cutting tool is disposed at substantially the same position as a center-of-gravity position of a horizontal section of the holder during cutting of the object to be cut while rotating the holder. 1. A cutting tool comprising a holder , a first cutter , and a second cutter , the first cutter and the second cutter being attached to the holder , whereinassuming that a direction perpendicular to a vertical direction in which a side of the cutting tool that is coupled to a drive mechanism corresponds to an upper side of the cutting tool is a horizontal direction, an amount of projection of the first cutter that projects substantially in the horizontal direction from the holder is greater than an amount of projection of the second cutter that projects substantially in the horizontal direction from the holder, anda cutting resistance of the first cutter to an object to be cut is smaller than a cutting resistance of the second cutter to the object to be cut so that a rotation axis of the cutting tool is disposed at substantially the same position as a center-of-gravity position of a horizontal section of the holder during cutting of the object to be cut while rotating the holder.2. The cutting tool according to claim 1 , wherein a material of the first cutter has a surface with a lower friction than that of a material of the second cutter.3. The cutting tool according to claim 1 , wherein an inclination angle of the second cutter in a ...

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Номер записи: 75
16-07-2015 дата публикации

FINISHING FACE MILL WITH REDUCED CHIP LOAD VARIATION AND METHOD OF OBTAINING THE SAME

Номер: US20150196962A1
Автор: ENDRES WILLIAM J., WOODRUFF DOUGLAS J.
Принадлежит:

A face milling tool includes a body which is rotatable about an axis, at least one wiper tooth, and at least two primary cutting teeth mounted on the body having a cutting edge for cutting about the axis. The primary cutting teeth are staggered radially relative to each other by a radial shift so that a chip load variation during operation is less than 0.7 times a mean primary-tooth chip load. A method for determining the primary cutting tooth radial positions on a face milling tool body is provided such that a chip load variation during operation is less than 0.7 times a mean primary-tooth chip load. 1. A face milling tool comprising:a body, said body being rotatable about an axis;at least one wiper tooth; andat least two primary cutting teeth mounted on the body having a cutting edge for cutting about said axis, said primary cutting teeth are staggered radially relative to each other by a radial shift so that a chip load variation during operation is less than 0.7 times a mean primary-tooth chip load.4. The face milling tool according to claim 1 , wherein the chip load variation during operation is less than 0.6 times the mean primary-tooth chip load.5. The face milling tool according to claim 1 , wherein the chip load variation during operation is less than 0.5 times the mean primary-tooth chip load.6. The face milling tool according to claim 1 , wherein the chip load variation during operation is less than 0.4 times the mean primary-tooth chip load.7. The face milling tool according to claim 1 , wherein the chip load variation during operation is less than 0.3 times the mean primary-tooth chip load.8. The face milling tool according to claim 1 , wherein the chip load variation during operation is less than 0.2 times the mean primary-tooth chip load.9. The face milling tool according to claim 1 , wherein the chip load variation during operation is less than 0.1 times the mean primary-tooth chip load.10. The face milling tool according to claim 1 , wherein each of ...

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Номер записи: 76
06-07-2017 дата публикации

ROTARY CUTTING TOOL HAVING ADJACENT CUTTING INSERTS WITH WAVE-SHAPED EDGES AND OVERLAPPING ROTATIONAL TRAJECTORIES COINCIDING IN PHASE

Номер: US20170189974A1
Автор: OTSUKA Jun
Принадлежит: TUNGALOY CORPORATION

A rotary cutting tool has a plurality of circumferentially spaced grooves, each having a plurality of cutting inserts mounted. Each cutting insert has a wave-shaped major cutting edge, a corner cutting edge, and a minor cutting edge. The cutting inserts are arranged such that, the phases of the waves of the rotational trajectories formed by the cutting inserts that are adjacent to each other in a direction along the tool rotational axis coincide with each other in one groove. Also, the rotational trajectories of at least part of cutting edge portions of at least some cutting inserts are overlapped with each other in the direction of the tool rotational axis. Accordingly, even when the cutting edge portion is used as a major cutting edge and as an inner cutting edge, it is still possible to reduce cutting load and suppress breakage. 11020302027232028273028. An indexable rotary cutting tool () comprising: a substantially cylindrical tool body () having a rotational axis (O); and cutting inserts () mounted on the tool body () , in which a plurality of grooves () is formed in a peripheral surface () of the tool body () , a plurality of insert seats () is formed in the grooves () , and the cutting inserts () are removably arranged onto the insert seats () , wherein:{'b': 30', '31', '33', '31', '34', '37', '34', '35', '37', '31', '33, 'the cutting inserts () each have a rake surface () and a flank () intersecting with the rake surface (), and a major cutting edge (), a corner cutting edge () connected to the major cutting edge (), and a minor cutting edge () connected to the corner cutting edge (), are formed in an intersecting edge between the rake surface () and the flank ();'}{'b': 34', '31, 'the major cutting edge () is formed in a wave shape as viewed from a direction facing the rake surface (); and'}{'b': '30', 'claim-text': [{'b': 34', '30', '10', '30', '27, 'such that, in rotational trajectories formed by the major cutting edges () of the respective cutting ...

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Номер записи: 77
20-06-2019 дата публикации

Single-Edged Milling Tool

Номер: US20190184475A1
Автор: Dolze Frank
Принадлежит:

A single-edged milling tool has a shaft section and a machining section. A face cutting edge is formed on a distal end of the machining section. The face cutting edge extends radially from an outside end at an outer peripheral edge to an inside end close to the axis of rotation. The face cutting edge has an outer peripheral planar portion at a constant planar distance to a reference plane extending perpendicular to the axis of rotation. An oblique portion connects the planar portion to the inside end. The oblique portion of the face cutting edge is closer to the reference plane than the planar portion. The distance of the face cutting edge from the reference plane in the oblique portion diminishes continuously starting out from the planar portion to the inside end of the face cutting edge. 18.-. (canceled)9. A single-edged milling tool , comprising:a shaft section;a machining section; anda face cutting edge formed on a distal end of the machining section facing away from the shaft section, the face cutting edge extending radially from an outside end at an outer peripheral edge to an inside end close to an axis of rotation at a distance from the outer peripheral edge, a planar portion at its outside end facing the outer peripheral edge in which the face cutting edge has a constant planar distance to a reference plane extending perpendicular to the axis of rotation in the shaft section, and', 'an oblique portion connecting to the planar portion and extending to the inside end, in which the face cutting edge has a smaller distance to the reference plane than the planar distance., 'wherein the face cutting edge has'}10. The single-edged milling tool according to claim 9 , wherein the planar portion of the face cutting edge has a length between 2% and 60% of the length of the face cutting edge.11. The single-edged milling tool according to claim 9 , wherein the planar portion of the face cutting edge has a length between 3% and 20% of the length of the face cutting edge. ...

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Номер записи: 78
13-07-2017 дата публикации

VERTICALLY-MOUNTED MILLING CUTTER INSERT AND MULTITOOTH MILLING CUTTER

Номер: US20170197256A1
Автор: HAN Qi, ZHANG Zongchao
Принадлежит: BEIJING WORLDIA DIAMOND TOOLS CO., LTD

The present invention discloses a vertically-mounted milling cutter insert and a multitooth milling cutter, wherein the vertically-mounted milling cutter insert comprises a insert base and a cutter tip unit, the insert base is set with a mounting hole for mounting the vertically-mounted milling cutter insert onto the milling cutter wheel, and the cutter tip unit is mounted on the insert base, and the cutter tip unit has a double-cutter tip structure. In the invention, the vertically-mounted milling cutter insert is positioned via the fitting between a bent-plane structure in the vertically-mounted milling cutter insert and a positioning structure in the milling cutter wheel, and the bent-plane structure will not be abraded in use. Because the bent-plane structure will not be abraded, reliable positioning may be guaranteed when two cutter tips are used. 1. A vertically-mounted milling cutter insert , comprising: a insert base and a cutter tip unit , wherein the insert base is set with a mounting hole for mounting the vertically-mounted milling cutter insert onto a milling cutter wheel , the cutter tip unit is mounted on the insert base , and the cutter tip unit has a double-cutter tip structure.2. The vertically-mounted milling cutter insert according to claim 1 , wherein the double-cutter tip structure comprises a first cutter tip and a second cutter tip claim 1 , the cross section of the insert base that is vertical to the axis of the mounting hole has four vertexes claim 1 , and the first cutter tip and the second cutter tip are set on two vertexes on the insert base with locations corresponding to each other.3. The vertically-mounted milling cutter insert according to claim 2 , wherein the insert base has a first lateral side and a second lateral side opposite to the first lateral side; the first lateral side is set with a first cutter tip supporting surface and a first positioning structure; the first positioning structure is recessed to the inside of the insert ...

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Номер записи: 79
13-07-2017 дата публикации

INDEXABLE ROTARY CUTTING TOOL AND TOOL BODY

Номер: US20170197257A1
Автор: ASO Takahiro
Принадлежит:

An indexable roughing end mill having a peripheral surface provided with a plurality of spiral grooves. When the positions of cutting inserts () arranged in each spiral groove () are defined as a first segment to an nsegment from a leading end surface () side of a tool body () toward a base end surface () side, all of the angles β . . . βm between lines connecting a rotational axis (O) and the cutting inserts () in the first segments of the respective spiral grooves () are different from each other, as viewed from the leading end, and an angle (αt) between the cutting insert () in the first segment and the cutting insert () in the uppermost nsegment in a spiral groove is different from any of the angles β . . . βm between the lines, as viewed from the leading end. 110. An indexable rotary cutting tool () , comprising:{'b': 20', '40', '20, 'a substantially cylindrical tool body () having a rotational axis (O); and cutting inserts () mounted on the tool body (),'}{'b': 20', '23', '28', '30, 'the tool body () having a peripheral surface () provided with a plurality of spiral grooves () in which a plurality of insert seats () is formed,'}{'b': 40', '30', '40', '28', '22', '21', '20, 'sup': 'th', 'the cutting inserts () being removably arranged on the insert seats (), wherein, when positions of the cutting inserts () arranged in each of the spiral grooves () are defined as a first segment to an nsegment (where n is an integer of 2 or higher) from a leading end surface () side to a base end surface () side of the tool body (){'b': 20', '1', '40', '28, 'as viewed from the leading end surface side of the tool body (), all of angles (β, . . . βm (where m is an integer of 2 or higher)) between lines connecting the rotational axis (O) and the cutting inserts () in the first segments of the respective spiral grooves () are different from each other; and'}{'b': 20', '40', '40', '28', '1, 'sup': 'th', 'as viewed from the leading end surface side of the tool body (), an angle (αt) ...

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Номер записи: 80
27-06-2019 дата публикации

METHOD TO PRODUCE A RADIAL RUN-OUT TOOL AS WELL AS A RADIAL RUN-OUT TOOL

Номер: US20190193226A1
Автор: KAUPER HERBERT RUDOLF
Принадлежит:

The radial run-out tool (), particularly a drill or a cutter, has a basic body () extending in an axial direction () and comprises at least two chip grooves (), to which a guide chamfer () is connected in the rotational direction (), with a ridge () being formed between them. A radial clearance is connected to the guide chamfer (). In order to enable simple and economical production of such type of radial run-out tool (), an unprocessed rod () is ground non-concentrically, in a first process step, such that a radius (R) of the unprocessed rod () varies, depending on the angle, between a maximum radius (R) and a minimum radius (R). In a second process step, the chip grooves () are grounded down such that the guide chamfers () are formed at the positions with the maximum radius (R) and the radius (R) is subsequently reduced downstream of the respective guide chamfer () in order to form the radial clearance (). 19-. (canceled)10. A method of producing a radial run-out tool , comprising a basic body extending along a longitudinal axis , wherein the basic body comprises:at least two chip grooves;a guide chamfer connected to each chip groove, when viewed along a rotational direction of the radial run-out tool;a ridge extending between each guide chamfer and a following one of the chip grooves, when viewed along the rotational direction of the radial run-out tool; anda radial clearance defined for each ridge;said method comprising forming the basic body via:in a first process step, grinding an unprocessed rod non-concentrically, such that a radius of the unprocessed rod varies, depending on rotational angle, between a maximum radius and a minimum radius; andin a second process step, grinding the chip grooves such that the guide chamfers are formed at positions with the maximum radius;whereby the radius of the formed basic body decreases in the rotational direction with respect to each of the guide chamfers, thereby defining the radial clearance.11. The method according to ...

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Номер записи: 81
02-10-2014 дата публикации

Tool holder attaching/detaching structure of machine tool

Номер: US20140294523A1
Автор: Soichiro Yamada, Toshio Ueda, Yumi Suzuki
Принадлежит: DMG Mori Seiki Co Ltd

In a case where a tool holder 5 having a plurality of cutting tools T are attachably/detachably mounted on a base member 8, the tool holder 5 is formed in a ring shape and has depressions 5 a and projections 5 b on an inner periphery, and by aligning the depressions and projections 5 a, 5 b of the tool holder 5 with projections 9 b and depressions 9 a formed on an outer periphery of a rotating member 9 rotatably mounted on the base member 8, the tool holder 5 is mountable to or removal from the base member 8. The tool holder 5 is clamped to the base member 8 by being pressed against a seating surface 8 e of the base member 8.

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Номер записи: 82
02-10-2014 дата публикации

PENTAGON-SHAPED CUTTING INSERT AND SLOTTING CUTTER THEREFOR

Номер: US20140294524A1
Автор: Chennuri Sivapapachari, Kumar Prem
Принадлежит:

A cutting insert for machining a workpiece includes a top surface; a bottom surface. A plurality of peripheral side surfaces extend between the top and bottom surfaces. Each side surface includes an arcuate-shaped surface and a substantially planar surface. Each substantially planar surface is formed with a true angle with respect to a plane perpendicular to the top and bottom surfaces that results in a relatively smaller resultant angle when mounted in a slotting cutter to produce a true 90 degree wall on a workpiece during a slotting cutting operation. 1. A cutting insert for machining a workpiece , comprising:a top surface;a bottom surface;a plurality of peripheral side surfaces extending between the top and bottom surfaces, each side surface including an arcuate-shaped surface and a substantially planar surface each arcuate-shaped surface being formed with a radius of curvature, R, and a depth, D; anda plurality of cutting edges formed at an intersection between the top and bottom surfaces, the arcuate-shaped surface and the planar surface of an immediately adjacent peripheral side surface,wherein each substantially planar surface is formed with a true angle with respect to a plane perpendicular to the top and bottom surfaces that results in a relatively smaller resultant angle when mounted in the slotting cutter to produce a true 90 degree wall on a workpiece during a slotting cutting operation.2. The cutting insert according to claim 1 , wherein the cutting insert is pentagon-shaped having five cutting corners formed at an intersection between each of the peripheral side surfaces and the top and bottom surfaces.3. The cutting insert according to claim 1 , wherein each planar surface contacts an inscribed circle claim 1 , IC claim 1 , of the cutting insert.4. The cutting insert according to claim 1 , wherein the top and bottom surfaces are parallel to each other.5. The cutting insert according to claim 1 , wherein the planar surface extends a greater distance ...

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Номер записи: 83
28-07-2016 дата публикации

END MILL WITH COOLANT HOLE

Номер: US20160214187A1
Автор: Fukata Koji
Принадлежит: MITSUBISHI MATERIALS CORPORATION

The discharge performance of chips generated by end cutting edges adjacent to a backward side of a long end cutting edge in a rotational direction of an end mill is improved. End cutting edges are formed at intersecting ridgeline portions between tip flank faces and gashes at the tips of a plurality of chip discharge grooves that are formed in an end mill body. At least one of the end cutting edges is a long end cutting edge that extends further toward an inner peripheral side than the other end cutting edges. Coolant holes are formed between the chip discharge grooves within the end mill body. 1. An end mill with coolant holes ,wherein a tip portion of an end mill body rotated around an axis is a cutting edge part,wherein a plurality of chip discharge grooves twisted to a backward side in a rotational direction of the end mill toward a rear end side in a direction of the axis are formed at predetermined intervals in a circumferential direction at an outer periphery of the cutting edge part,wherein peripheral cutting edges are respectively formed at outer-peripheral-side ridge portions of wall faces of the chip discharge grooves that face in the rotational direction of the end mill,wherein gashes are formed at tip portions of the chip discharge grooves,wherein end cutting edges extending from tips of the peripheral cutting edges to an inner peripheral side of the end mill body are respectively formed at intersecting ridgeline portions between wall faces of the gashes that face in the rotational direction of the end mill and tip flank faces of the end mill body,wherein at least one first end cutting edge of the end cutting edges is a long end cutting edge that extends further toward the inner peripheral side of the end mill body than a second end cutting edge adjacent to the backward side of the first end cutting edge in the rotational direction of the end mill,wherein coolant holes, which extend so as to be twisted in the same direction of the chip discharge grooves ...

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Номер записи: 84
25-06-2020 дата публикации

ROTATING TOOL

Номер: US20200198025A1
Автор: TAKATAKE Yuusaku
Принадлежит: KYOCERA CORPORATION

In an aspect, a rotating tool includes a main body having a rod shape and extending along a rotation axis. The main body includes a first end, a second end, a twisted cutting edge located at a side of the first end, a twisted flute, a reverse twisted cutting edge located closer to the second end than the twisted cutting edge, and a reverse twisted flute. The reverse twisted flute is connected to the twisted flute. The twisted cutting edge includes a first part having a length from the rotation axis decreasing as approaching toward the second end. 1. A rotating tool comprising a main body having a rod shape , extending along a rotation axis , and comprising:a first end;a second end opposite to the first end;a twisted cutting edge located at a side of the first end and twisted from a side of the first end toward the second end;a twisted flute located at a front of the twisted cutting edge in a rotational direction of the rotation axis and extending along the twisted cutting edge;a reverse twisted cutting edge located closer to the second end than the twisted cutting edge and twisted from the side of the first end toward the second end in a direction opposite to the twisted cutting edge; anda reverse twisted flute located at the front of the reverse twisted cutting edge in the rotational direction and extending along the reverse twisted cutting edge; whereinthe reverse twisted flute is connected to the twisted flute, andthe twisted cutting edge comprises a first part having a length from the rotation axis decreasing as approaching toward the second end.2. The rotating tool according to claim 1 , whereina rotation locus of the first parthas a linear shape on a virtual plane which includes the rotation axis.3. The rotating tool according to claim 2 , wherein the first part has an angle of 2° to 20° with respect to the rotation axis.4. The rotating tool according to claim 1 , whereina rotation locus of the first part has a curved shape on a virtual plane which includes ...

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Номер записи: 85
25-06-2020 дата публикации

END MILL HAVING TEETH AND ASSOCIATED FLUTES WITH CORRELATED PHYSICAL PARAMETERS

Номер: US20200198026A1
Автор: SHPIGELMAN LEONID
Принадлежит: Iscar, Ltd.

An end mill includes a plurality of teeth and flutes. The teeth and their associated flutes include one or more correlated physical parameters. One such correlated parameter is that, at an axial location in a front half of an effective cutting length, at least one tooth of the plurality of teeth has a rake angle smaller than an average rake angle value of the plurality of teeth, and, at the same axial location, a flute preceding each such tooth has a helix angle larger than an average helix angle value of the plurality of flutes. 2. The finish end mill according to claim 1 , wherein claim 1 , at an axial location in the front half of the effective cutting length:the teeth have an average tooth area value, with one or more teeth having a smallest tooth area value, and one or more teeth having a largest tooth area value;the teeth have an average relief surface width value, with one or more teeth having a smallest relief surface width value, and one or more teeth having a largest relief surface width value; andat least one tooth has a tooth area greater than the average tooth area value and a relief surface width smaller than the average relief surface width value.3. The finish end mill according to claim 1 , wherein claim 1 , at an axial location in the front half of the effective cutting length:at least one tooth has a radial rake angle smaller than the average radial rake angle value; andthe flute preceding each such tooth has a helix angle larger than the average helix angle value.4. The finish end mill according to claim 3 , wherein claim 3 , at an axial location in a front half of an effective cutting length:each of at least two teeth has a radial rake angle smaller than the average radial rake angle value; andsaid flute preceding each such tooth has a helix angle larger than the average helix angle value.5. The finish end mill according to claim 3 , wherein claim 3 , at an axial location in a front half of an effective cutting length:said at least one tooth has ...

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Номер записи: 86
25-06-2020 дата публикации

Milling tool holder and milling tool

Номер: US20200198028A1
Автор: Christian Stark
Принадлежит: Hartmetall Werkzeugfabrik Paul Horn GmbH

Milling tool holder which comprises a first holder part, a second holder part, and a locking mechanism. The first holder part comprises a first cutting insert receptacle for receiving a first cutting insert and a second cutting insert receptacle for receiving a second cutting insert. The second holder part which, for adjusting a milling width, is variably positionable with respect to the first holder part along a longitudinal axis, comprises a third cutting insert receptacle for receiving a third cutting insert and a fourth cutting insert receptacle for receiving a fourth cutting insert. The locking mechanism is configured to fix the first and second holder parts to the adjusted milling width. The first holder part and the second holder part are positioned with respect to one another in such a manner that the third cutting insert receptacle is arranged in the circumferential direction between the first cutting insert receptacle and the second cutting insert receptacle, and that the second cutting insert receptacle is arranged in the circumferential direction between the third cutting insert receptacle and the fourth cutting insert receptacle.

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Номер записи: 87
03-08-2017 дата публикации

FORMED ROTARY CUTTING TOOL

Номер: US20170216938A1
Автор: TSUDUKI Kiyoshi
Принадлежит: OSG CORPORATION

A formed rotary cutting tool includes a cutting edge defining a cutting edge diameter that is increased and reduced in a direction of an axis of the tool, so as to have at least one neck portion in which the cutting edge diameter is minimized. The cutting tool includes a roughing portion which is provided on a periphery thereof and which is constituted by a succession of protrusions and recesses arranged in the direction of the axis. The roughing portion includes (i) a fine roughing portion that is provided in at least one of the at least one neck portion, and (ii) another portion that is provided in a portion that is other than the at least one of the at least one neck portion. The fine roughing portion of the roughing portion is different in characteristics from the above-described another portion of the roughing portion. 17-. (canceled)8. A formed rotary cutting tool that is to be moved relative to a workpiece in a direction perpendicular to an axis of the cutting tool while being rotated about the axis , so as to cut a groove having a predetermined shape , in the workpiece ,the cutting tool comprising a cutting edge defining a cutting edge diameter that is increased and reduced in a direction of the axis, so as to have at least one neck portion in which the cutting edge diameter is minimized,the cutting tool comprising a roughing portion which is provided on a periphery thereof and which is constituted by a succession of protrusions and recesses arranged in the direction of the axis,the roughing portion including a fine roughing portion that is provided in at least one of the at least one neck portion, and another portion that is provided in a portion that is other than the at least one of the at least one neck portion, andthe fine roughing portion of the roughing portion being different in characteristics from the another portion of the roughing portion.9. The formed rotary cutting tool according to claim 8 , wherein the fine roughing portion of the roughing ...

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Номер записи: 88
03-08-2017 дата публикации

CUTTING INSERT HAVING A VARIABLE-WIDTH LAND ASSOCIATED WITH GROOVES FORMED IN THE UPPER AND SIDE SURFACES AND INDEXABLE CUTTING TOOL

Номер: US20170216940A1
Автор: ASO Takahiro
Принадлежит: TUNGALOY CORPORATION

A cutting insert () has a first end surface (); a second end surface () opposing the first end surface; and a peripheral side surface () connecting the first and second end surfaces. A cutting edge () extends along an intersecting edge between the first end surface and the peripheral side surface. A land () is formed in the first end surface and extends along the cutting edge. At least one groove () is formed in the peripheral side surface, each groove forming an opening in the first end surface and separating the cutting edge into a plurality of portions. In a plan view of the first end surface, a portion of the land adjacent to an end area (S) of the groove, has a greater width than a width of a portion of the land which is distant from the groove. 11. A cutting insert () , comprising:{'b': '2', 'a first end surface ();'}{'b': '3', 'a second end surface () opposing the first end surface;'}{'b': '4', 'a peripheral side surface () connecting the first end surface and the second end surface;'}{'b': '6', 'a cutting edge () extending along an intersecting edge between the first end surface and the peripheral side surface;'}{'b': '20', 'a land () formed in the first end surface so as to extend along the cutting edge; and'}{'b': 18', '18, 'i': 'o', 'at least one groove () formed in the peripheral side surface, each groove forming an opening () in the first end surface and being formed so as to separate the cutting edge into a plurality of portions,'}wherein, when the cutting insert is viewed from a direction facing the first end surface, the land is formed such that a portion of the land which is adjacent to an end area (S) of the groove has a greater width than a width of a portion of the land which is distant from the groove.21. The cutting insert () according to claim 1 , wherein:{'b': 9', '10, 'the first surface has a substantially polygonal shape and comprises a plurality of corners (, );'}{'b': 11', '9', '10, 'when the cutting insert is seen from a side view, the ...

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Номер записи: 89
11-07-2019 дата публикации

ROUGHENING TOOL AND METHOD FOR ROUGHENING A CYLINDRICAL SURFACE

Номер: US20190210119A1
Автор: TEUSCH Bruno
Принадлежит: Guehring KG

A roughening tool for roughening the cylindrical surface of a bore in a particular metallic workpiece, e.g. the piston running surface of a cylinder bore or cylinder liner in an internal combustion engine, by generating a defined microstructure of a plurality of circumferentially spaced apart circumferential microgrooves. The roughening tool has a tool main body which can be driven in rotation about an axis of rotation and a multiplicity of circumferentially cutting cutting tools arranged at a defined axial distance from one another on the tool main body. According to the invention, the cutting tools are each formed from a disc milling cutter and each disc milling cutter has at least one cutting element with a multiplicity of cutting teeth arranged at an axial distance from one another. In addition, a method for roughening a cylindrical surface. 1. A roughening tool for roughening the cylindrical surface of a bore in a particularly metallic workpiece , by producing a defined microstructure that is composed of a plurality of microgrooves extending circumferentially at an axial distance from one another , comprisinga tool base body, which can be driven so as to rotate about a rotational axis, anda plurality of circumferentially cutting cutting tools, which are arranged on the tool base body at a defined axial distance from one another,the cutting tools are respectively formed by a side milling cutter andeach side milling cutter comprising at least one cutting element with a plurality of cutting teeth that are arranged at an axial distance from one another.2. The roughening tool according to claim 1 , wherein each side milling cutter comprises a plurality of cutting elements claim 1 , which are arranged at identical angular distances from one another in the circumferential direction.3. The roughening tool according to claim 2 , wherein the cutting teeth of the cutting elements of each side milling cutter are arranged in alignment in the circumferential direction.4. The ...

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Номер записи: 90
12-08-2021 дата публикации

CIRCULAR MILLING TOOL AND CIRCULAR MILLING METHOD

Номер: US20210245274A1
Автор: TEUSCH Bruno
Принадлежит: Guehring KG

A circular milling tool for producing a microgroove structure in a cylindrical surface of a bore, the microgroove structure having a groove profile defined by plural microgrooves axially spaced apart and peripherally extend in a circular manner, comprising: 1. A circular milling tool for producing a microgroove structure in a cylindrical surface of a bore , wherein the microgroove structure has a groove profile that is defined by a plurality of microgrooves that are axially spaced apart and peripherally extend in a circular manner , comprising:a tool base body that can be driven around an axis of rotation, which carries a circumferential cutter set with a first circumferential cutter and a second circumferential cutter, which are arranged in a row in the circumferential direction,the first circumferential cutter and second circumferential cutter each have a cutting profile that differs from the groove profile of the microgroove structure to be produced, andthe circumferentially projected cutting profiles of the circumferential cutters of the circumferential cutter set overlap each other in an axial direction to an extent that they jointly image the defined groove profile of the microgroove structure to be generated.2. The circular milling tool according to claim 1 , wherein the first circumferential cutter and the second circumferential cutter each have a cutting profile that has a plurality of cutting teeth in the axial direction.3. The circular milling tool according to claim 2 , wherein the cutting teeth of the first circumferential cutter and/or the second circumferential cutter each have a rectangular tooth profile.4. The circular milling tool according to claim 2 , wherein the cutting teeth of the first circumferential cutter and/or the second circumferential cutter are arranged at the same axial distances.5. The circular milling tool according to claim 2 , wherein the cutting teeth of the first circumferential cutter and/or the second circumferential cutter ...

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Номер записи: 91
18-08-2016 дата публикации

MILLING TOOL AND CUTTING INSERT FOR SUCH A MILLING TOOL

Номер: US20160236286A1
Автор: Gruenler Jan, Heinloth Markus, Woerner Hans
Принадлежит:

A milling tool with a disk- or strip-shaped base body, which can be driven around an axis of rotation, and several cutting inserts arranged along the outer circumference of the base body on opposite sides from one another, wherein the cutting inserts, viewed in the axial direction, overlap one another. The invention also relates to a tangential cutting insert for a milling tool of the above-mentioned type, with two side surfaces, through which a fastening opening extends, and two face ends, wherein cutting edges are formed at the junction of the front faces to the side surfaces, wherein the fastening opening is positioned eccentrically. 1. A milling tool with a disk-shaped or strip-shaped base body , which can be driven around an axis of rotation , and several cutting inserts arranged along the outer perimeter of the base body on opposite sides from one another , wherein the cutting inserts , viewed in the axial direction , overlap one another.2. The milling tool according to claim 1 , wherein the overlap amounts to at least 50% of the width of a cutting insert measured in the peripheral direction.3. The milling tool according to claim 2 , wherein the overlap amounts to at least 80% of the width of a cutting insert measured in the peripheral direction.4. The milling tool according to claim 3 , wherein the overlap amounts to at least 90% of the width of a cutting insert measured in the peripheral direction.5. The milling tool according to claim 1 , wherein the cutting inserts are different types on the side surfaces of the base body.6. The milling tool according to claim 5 , wherein the cutting inserts on the side surfaces of the base body comprise rough cutting inserts and finish cutting inserts.7. The milling tool according to claim 1 , wherein cutting inserts of a third type are arranged on the peripheral surface of the base body.8. The milling tool according to claim 1 , wherein the cutting inserts are tangential cutting inserts.9. A tangential cutting insert for ...

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Номер записи: 92
16-08-2018 дата публикации

Apparatus for processing cylinder walls of internal combustion engines

Номер: US20180229314A1
Автор: Josef LIFKA
Принадлежит: Hoffmann Qualitatswerkzeuge GmbH

The invention relates to an apparatus for processing cylinder walls of internal combustion engines ( 1 ), including a cutting element ( 4 ). The cutting element ( 4 ) is arranged on a rotary cutting ring ( 3 ). The cutting element ( 4 ) has a slit contour ( 5 ) with a plurality of cutting edges ( 6 ) arranged next to each other in a direction of an axis of rotation of the rotary cutting ring. And, the individual cutting edges ( 6 ) face in a direction of rotation of the rotary cutting ring.

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Номер записи: 93
17-08-2017 дата публикации

CUTTING INSERT POSITIONING CARTRIDGE AND SYSTEM FOR A MACHINING TOOL AND A MACHINING TOOL COMPRISING SUCH A POSITIONING SYSTEM

Номер: US20170232533A1
Автор: CRESPIN Frank, SARTON Yannick
Принадлежит:

A cartridge for positioning a cutting insert onto a machining tool has a central longitudinal axis, along which the cutting insert is configured to be positioned and an end wall for supporting the cartridge. The end wall defines a first surface extending beyond the end wall and transversally to the central longitudinal axis. The cartridge includes a rear wall for supporting the cartridge against the machining tool and defining a second surface extending beyond the rear wall and a front clamping wall having a clamping hole. The clamping hole extenda along a clamping direction and is configured to receive a clamping screw for clamping the cartridge onto the machining tool, wherein the clamping direction is arranged to intersect the first and second surfaces. 1. A cartridge for positioning a cutting insert onto a machining tool , said cartridge having a central longitudinal axis , along which the cutting insert is configured to be positioned , the cartridge comprising:an end wall arranged to support the cartridge, said end wall defining a first surface extending beyond the end wall and transversally to the central longitudinal axis;a rear wall arranged to support the cartridge against the machining tool and defining a second surface extending beyond the rear wall; anda front clamping wall having a clamping hole, said clamping hole extending along a clamping direction and being configured to receive a clamping screw for clamping the cartridge onto the machining tool, wherein the clamping direction is arranged to intersect the first and second surfaces.2. The cartridge according to claim 1 , wherein the clamping direction is arranged to intersect the rear wall.3. The cartridge according to claim 1 , wherein the rear wall includes a first and a second rear wall arranged to support the cartridge against the machining tool claim 1 , wherein the clamping direction intersects the first and/or second rear walls.4. The cartridge according to claim 3 , wherein the second surface ...

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Номер записи: 94
10-09-2015 дата публикации

END MILL

Номер: US20150251254A1
Автор: Gall Clemens, Mutlu Murat, Weimann Stefan
Принадлежит:

Described is an end mill with four straight front cutting edges arranged on a front side and a corresponding number of circumferential cutting edges that each emanate from the outer nose of the front cutting edges and are separated from each other by flutes. One of the front cutting edges passes over into a second cutting edge via a free surface intersecting line. The additional front cutting edges lying between the latter in the cutting direction are offset relative to each other by a first angular pitch of 180°, and end before the middle. So that the end mill can be used in an especially advantageous manner for incorporating dimensionally and positionally precise pilot holes or chamfering curved work piece surfaces, the first front cutting edge is offset relative to the second front cutting edge in the cutting direction by a second angular pitch ranging between 173° and 177°, preferably between 174° and 176°, wherein the first front cutting edge is offset relative to the next additional front cutting edge in the cutting direction by a third angular pitch ranging between 90° and 94°, preferably between 91° and 93°. 1. An end mill comprising four straight front cutting edges arranged on a front side and a corresponding number of circumferential cutting edges that each emanate from an outer nose of the front cutting edges and are separated from each other by flutes , wherein one of the front cutting edges passes over into a second cutting edge via a free surface intersecting line , and the additional front cutting edges lying between the latter in the cutting direction are offset relative to each other by a first angular pitch of 180° , and end before a middle , and the second front cutting edge is offset relative to the first front cutting edge in the cutting direction by a second angular pitch ranging between 173° and 177° , and the first front cutting edge is offset relative to the next additional front cutting edge in the cutting direction by a third angular ...

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Номер записи: 95
01-08-2019 дата публикации

Milling cutter

Номер: US20190232396A1
Автор: Böck Benjamin
Принадлежит:

A milling tool has a shank and a milling portion arranged along a longitudinal axis of the milling tool. The milling portion has at least one peripheral blade and a flute that adjoins a cutting edge of the peripheral blade. A radial spacing between the cutting edge and the longitudinal axis is selected on the basis of a specified compensation rotational speed such that a shell surface formed by the rotating cutting edge is circular cylindrical in the case of a rotation of the milling tool at the compensation rotational speed. The radial spacing of the cutting edge increases continuously or decreases continuously as the distance from the shank increases. 16.-. (canceled)7. A milling tool , comprisinga shank and a milling portion which are arranged along a longitudinal axis of the milling tool,wherein the milling portion comprises at least one peripheral blade that extends over the milling portion, in the direction of the longitudinal axis, at least in portions with a flute that adjoins a cutting edge of the peripheral blade,wherein a radial spacing between the cutting edge and the longitudinal axis is selected on the basis of a specified compensation rotational speed at which a radial deflection of the cutting edge of the rotating milling tool occurs, such that a shell surface formed by the rotating cutting edge is circular cylindrical when the milling tool rotates at the compensation rotational speed.8. The milling tool according to claim 7 , wherein the radial spacing of the cutting edge increases or decreases continuously as a distance from the shank increases.9. The milling tool according to claim 8 , wherein the radial spacing of the cutting edge increases or decreases proportionally claim 8 , in the direction of an end face of the milling tool claim 8 , with the distance from the shank.10. The milling tool according to claim 7 , wherein the milling tool comprises a single peripheral blade that extends over the milling portion claim 7 , in the direction of the ...

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Номер записи: 96
01-09-2016 дата публикации

COMPOSITE MILLING CUTTER

Номер: US20160250696A1
Автор: Iyer Ravishankar, Kerin Mark A., Morrison Lewis Ray
Принадлежит:

A composite milling cutter includes a rotatable adapter plate and ring cutter. The adapter plate has a raised key portion with a peripheral side wall having a plurality of curved abutment surfaces symmetrically located on an inscribed circle, ICdefined by the raised key portion. The cutter ring has an opening with a peripheral side wall for receiving the raised key portion of the adapter plate. The peripheral side wall has a plurality of curved abutment surfaces complimentary in shape to the curved abutment surfaces of the adapter plate and symmetrically located on an inscribed circle, IC, defined by the opening. A tolerance between the abutment surfaces of the peripheral side wall of the raised key portion and the abutment surfaces of the peripheral wall of the opening is such that run-out is minimized. 1. A composite milling cutter , comprising:{'sub': 'AP', 'a rotatable adapter plate having a raised key portion with a peripheral side wall, the peripheral side wall having a plurality of curved abutment surfaces symmetrically located on an inscribed circle, IC, defined by the raised key portion; and'}{'sub': 'CR', 'a cutter ring having an opening with a peripheral side wall for receiving the raised key portion of the adapter plate, the peripheral side wall having a plurality of curved abutment surfaces complimentary in shape to the curved abutment surfaces of the adapter plate and symmetrically located on an inscribed circle, IC, defined by the opening,'}wherein a tolerance between the abutment surfaces of the peripheral side wall of the raised key portion and the abutment surfaces of the peripheral wall of the opening is such that run-out is minimized.2. The composite milling cutter of claim 1 , wherein the curved abutment surfaces of the adapter plate are symmetrically located on the inscribed circle claim 1 , IC claim 1 , defined by the raised key portion claim 1 , and wherein the curved abutment surfaces of the cutter ring are symmetrically located on the ...

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Номер записи: 97
09-09-2021 дата публикации

TAPERED END MILL

Номер: US20210276109A1
Автор: KAWAI Ryogo
Принадлежит: OSG CORPORATION

A tapered end mill includes an outer circumferential cutting edge, a flute is disposed such that a flute bottom radius defined as a distance between a flute bottom and the tool axis decreases from a shank side toward the tool tip side, the flute bottom radius linearly changes at a predetermined gradient angle in the tool axis direction, the gradient angle changes at a predetermined change point to become smaller on the tool tip side as compared to the shank side, and a gradient angle θ on the tool tip side relative to the change point is equal to or larger than 0° and smaller than a taper half angle α of a cutting portion provided with the outer circumferential cutting edge, and a gradient angle θ on the shank side relative to the change point is larger than the taper half angle α. 18-. (canceled)9. A tapered end mill including an outer circumferential cutting edge disposed along a flute extending in a tool axis direction with a diameter of the outer circumferential cutting edge reduced toward a tool tip side , whereinthe flute is disposed such that a flute bottom radius defined as a distance between a flute bottom and the tool axis decreases from a shank side toward the tool tip side, whereinthe flute bottom radius linearly changes at a predetermined gradient angle in the tool axis direction, whereinthe gradient angle changes at a predetermined change point to become smaller on the tool tip side as compared to the shank side, and wherein{'b': 1', '2, 'a gradient angle θ on the tool tip side relative to the change point is equal to or larger than 0° and smaller than a taper half angle α of a cutting portion provided with the outer circumferential cutting edge, and a gradient angle θ on the shank side relative to the change point is larger than the taper half angle α.'}10. The tapered end mill according to claim 9 , whereinthe flute is one of a plurality of flutes disposed around the tool axis at equal angle intervals, while the outer circumferential cutting edge is ...

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Номер записи: 98
20-11-2014 дата публикации

RADIUS END MILL

Номер: US20140341662A1
Автор: Yamayose Tsutomu
Принадлежит: KYOCERA CORPORATION

[Object] To provide a radius end mill has a good cutting sharpness, and improves a surface roughness on the machined surface. 1. A radius end mill comprising:a tool body;a cutting edge composed of an end cutting edge disposed at a front end of the tool body, an outer peripheral cutting edge disposed on an outer periphery of the tool body, and a corner R cutting edge which extends between the end cutting edge and the outer peripheral cutting edge;a rake face of the end cutting edge, the corner R cutting edge and the outer peripheral cutting edge;a chip removal flute which extends at the back of the rake face; anda corner gash disposed adjacent to the corner R cutting edge of the rake face, wherein the corner gash has an edge which is located on the corner R cutting edge at a position other than an interface of the corner R cutting edge and the end cutting edge and an interface of the corner R cutting edge and the outer peripheral cutting edge, and an axial rake at an end portion on the side of the end cutting edge which is in contact with the corner gash on the corner R cutting edge is in the range of 5 to 20 degrees.2. The radius end mill according to claim 1 , wherein an angle formed between a perpendicular line to a tangent of the corner R cutting edge at the interface of the corner R cutting edge and the outer peripheral cutting edge and a perpendicular line to a tangent of the corner R cutting edge in the outer peripheral cutting edge end portion which is part of the edge of the corner gash is in the range of 30 to 60 degrees.3. The radius end mill according to claim 1 , wherein an angle formed between a perpendicular line to a tangent of the corner R cutting edge at the interface of the corner R cutting edge and the end cutting edge and a perpendicular line to a tangent of the corner R cutting edge in the end cutting edge end portion which is part of the edge of the corner gash is in the range of 1 to 20 degrees.4. The radius end mill according claim 1 , ...

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Номер записи: 99
07-09-2017 дата публикации

CUTTING TOOL ASSEMBLY FOR MILLING A RAIL TOP

Номер: US20170252835A1
Автор: Rosenbaum Floyd Samuel, Saffels Michael David, Williams Elvin Charles
Принадлежит:

A cutting tool assembly for milling a rail top, includes a first section and a second section mounted to the first section. Each section includes a plurality of insert-receiving pockets for receiving a plurality of different types of cutting inserts. The plurality of different types of cutting inserts are arranged in a plurality of helical teeth that may be separated by a helical chip flute. In one embodiment, a first type of cutting insert is formed with a radius, R, a second type of cutting insert is formed with a radius, R and a third type of cutting insert is formed with a radius, R to perform a milling operation on three different areas of the rail top. 1. A cutting tool assembly for milling a rail top , comprising:a first section; anda second section mounted to the first section, each section including a plurality of insert-receiving pockets for receiving a plurality of different types of cutting inserts,wherein the plurality of different types of cutting inserts are arranged in a plurality of helical teeth.2. The cutting tool assembly according to claim 1 , wherein the plurality of different types of cutting inserts comprises a first type of cutting insert claim 1 , a second type of cutting insert and a third type of cutting insert.3. The cutting tool assembly according to claim 2 , wherein the first type of cutting insert comprises a double-sided cutting insert having a first surface formed with a radius claim 2 , R claim 2 , a second surface opposite the first surface formed with the radius claim 2 , R claim 2 , a plurality of peripheral side surfaces extending between the first and second surfaces claim 2 , a plurality of cutting edges at an intersection between the first surface and the peripheral side surfaces claim 2 , and a plurality of cutting edges at an intersection between the second surface and the peripheral side surfaces.4. The cutting tool assembly according to claim 3 , wherein the radius claim 3 , R claim 3 , is at least 10 inches.51. The ...

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Номер записи: 100