HYBRID ORBITING SPINDLE FOR SHAPING NON-CIRCULAR HOLES

A machine tool assembly includes a high speed rotating spindle for forming extremely precise surface contours on a work piece. The spindle is supported on a spherical air bearing about its center of gravity. The spindle can be rotated through an air turbine drive system incorporated into the spherical air bearing to eliminate any undesirable moments about an axis perpendicular to the long spindle axis. The spindle is adjustable in pitch and yaw directions through the influence of X-Y actuators. The X-Y actuation system is preferably electromagnetic and provides a non-contact method of displacing the spindle shaft in a controlled manner at any speed.

Engine piston and manufacture thereof

METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE

MACHINING PROCESS FOR TRAPEZOID RINGS WITH SMALL AXIAL DIMENSIONS, USED IN PISTONS OF INTERNAL COMBUSTION ENGINES

The invention relates to a method for producing a piston (1) for internal combustion engines, said piston comprising a circumferential trapezoid annular groove (2) for receiving trapezoid rings with small axial dimensions and the groove having a groove base (5) with adjoining surfaces (6, 7) and groove flanks (3, 4). According to the invention, the groove base (5) with adjoining surfaces (6, 7) is created in a first method step by machining using a cutting steel (15) and the groove flanks (3, 4) are created in a further method step. Also disclosed are a piston (1) produced according to the claimed method and a cutting steel (15).

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal catalyst compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds, and polymerization processes utilizing the transition metal compounds for the production of olefin polymers.

Method for the production of a single part piston and a piston produced by such a method

The present invention relates to a method for producing a single part piston (20) for an internal combustion engine from a piston blank (10), with a cooling channel (15) that is open in the downward direction running circularly inside a piston head (11), and an annular recess (16) built between the piston head (11) and a piston shaft (13), wherein the piston head (11) and the piston shaft (13) are connected to each other by means of a piston hub (14), and wherein the annular recess (16) and the cooling channel (15) are machined into the piston blank (10) by means of a cutting operation. According to the invention, it is provided that, for the cutting operation of the cooling channel (15), a tool (17) is moved into the area of the cooling channel (15) in an arc-shaped pivoting movement (A) through the recess (16), and that the cooling channel (15) is cut.

METHOD FOR THE PRODUCTION OF A SINGLE PART PISTON

Live center for lathes, grinders and the like

Double-Sided Drilling Fixture for Die-Forged Pistons and Double-Sided Drilling Process Thereof

The invention relates to a double-sided drilling fixture for die-forged pistons and a double-sided drilling process thereof. It overcomes the defects of low efficiency and accuracy of the double-sided drilling operation for die-forged pistons in the prior art. The invention comprises a die-forged piston, a fixture base assembly, an upper load-resisting assembly and a lower expansion-resisting assembly. The upper load-resisting assembly is installed on the fixture base assembly and disposed above the die-forged piston. A fixation base, whose upper surface shape is the same as internal surface shape of the die-forged piston, is installed above the fixture base assembly. The die-forged piston is sleeved on the fixation base. The invention achieves simultaneous drilling on both sides of the two rear skirt surfaces of die-forged pistons and delivers quick clamping and automatic fixation, significantly reducing the difficulty in the assembly of drilling plate and workpiece and increasing the alignment accuracy.

Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor

Vorgeschlagen wird ein Verfahren zur Herstellung eines Kolbens (1) für einen Verbrennungsmotor, mit einem Kolbenboden (2), mit einer Ringpartie (4) und mit einem Kolbenschaft (5), der zwei einander gegenüberliegende Bolzennaben (6, 6') aufweist, wobei im Rahmen der Endbearbeitung der Außenfläche des Kolbenrohlings in die Bereiche der radial äußeren Stirnflächen (8, 8') der Bolzennaben (6, 6') in radiale Richtung sich erstreckende Schaftrücknahmen eingeformt werden. Einfach und preisgünstig ist es, wenn hierbei die Endbearbeitung der Außenfläche des Kolbenrohlings einschließlich dem Einformen der Nuten in die Ringpartie (4) und dem Einformen der Schaftrücknahmen (9, 9') in den Kolbenschaft (5) mit Hilfe einer Drehbank (26) vorgenommen wird, deren Drehmeißel in Abhängigkeit der Drehposition des Kolbens (1) freiprogrammierbar positioniert werden kann.

Kolben und Verfahren zu seiner Herstellung

Zur spanenden Bearbeitung von einem Kolben (1) für eine Brennkraftmaschine auf einer Drehmaschine, wobei der Kolben (1) in der Drehmaschine rotiert und der zumindest eine zu bearbeitende Bereich des Kolbens (1) mit Hilfe zumindest eines Werkzeugs (8) der Drehmaschine bearbeitet wird, wobei das Werkzeug (8) zumindest parallel zur Drehachse des Kolbens (1) bewegt wird und der bearbeitete Bereich bezogen auf die Drehachse des Kolbens (1) als Brennraummulde (3) ausgebildet ist, ist erfindungsgemäß vorgesehen, dass das Werkzeug (8) parallel zur Drehachse des Kolbens (1) so bewegt wird, dass der bearbeitete Bereich des Kolbens (1) als rotationsasymmetrische Brennraummulde (3) bezog auf die Drehachse des Kolbens (1) nach der Bearbeitung ausgebildet ist. Ferner betrifft die Erfindung einen Kolben (1), eine Einspritzdüse (7) und eine Brennkraftmaschine, vorzugsweise eine Diesel-Brennkraftmaschine.

Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor und mittels dieses Verfahrens hergestellter Kolben

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Kolbens (10) für einen Verbrennungsmotor mit einem Kolbengrundkörper (11) und einem Kolbenringteil (17), wobei der Kolbengrundkörper (11) eine einen Dom (13) aufweisende Verbrennungsmulde (12) sowie mit Nabenbohrungen (15) versehene Kolbennaben (14) aufweist, welche über Laufflächen (16) miteinander verbunden sind, wobei der Kolbenringteil (17) einen Kolbenboden (18), einen umlaufenden Feuersteg (19) sowie eine umlaufende Ringpartie (21) aufweist, und wobei der Kolbengrundkörper (11) und das Kolbenringteil (17) einen umlaufenden Kühlkanal (22) bilden, mit den folgenden Verfahrensschritten: a) Herstellen eines Rohlings (11') des Kolbengrundkörpers (11) mittels eines Umformverfahrens, b) Herstellen eines Rohlings (17') des Kolbenringteils (17) mittels eines Umformverfahrens oder eines Gießverfahrens, c) Vorbearbeiten der Rohlinge (11', 17') unter Fertigbearbeitung von Schweißflächen (26, 28; 27, 29); d) Verbinden der vorbearbeiteten ...

SUPPORTING A PISTON DURING MACHINING.

A conical register 16 is provided inside the skirt of a piston and is engaged by a conical locating surface 5 on a ring carried by a tailstock. The ring is resiliently mounted. The tailstock may also include a ram 17 which is adapted to push on the inside of a piston crown and force the piston against a headstock. ...

Piston and method of making a piston

원피스 피스톤(20)은 최종 형상으로 주조되어 있고 중심 축선(A)에서 이격된 적어도 하나의 불규칙부를 구비하고 있는 연소 보울(26)을 포함하고 있다. 피스톤 (20)은 초기에는 서로 결합될 상부측 크라운 부재(22) 및 하부측 크라운 부재(24)로 제작된다. 그런 다음, 피스톤(20)은 피스톤의 상면(32) 또는 연소 보울(26)의 일부분을 위치시켜 그 위치를 기준면으로 정하는 CNC 선반과 같은 공작기계(54)에 척 고정된다. 이 기준면이 피스톤(20)의 후속하는 기계가공 작업을 위한 기준 위치로서 기능한다.

HYBRID ORBITING SPINDLE FOR SHAPING NON-CIRCULAR HOLES

A machine tool assembly includes a high speed rotating spindle for forming extremely precise surface contours on a work piece. The spindle is supported on a spherical air bearing about its center of gravity. The spindle can be rotated through an air turbine drive system incorporated into the spherical air bearing to eliminate any undesirable moments about an axis perpendicular to the long spindle axis. The spindle is adjustable in pitch and yaw directions through the influence of X-Y actuators. The X-Y actuation system is preferably electromagnetic and provides a non-contact method of displacing the spindle shaft in a controlled manner at any speed.

HYBRID ORBITING SPINDLE FOR SHAPING NON-CIRCULAR HOLES

WORKPIECE HOLDING DEVICE

METHOD AND MACHINE TOOL FOR MACHINING A ROTATIONALLY ASYMMETRICAL REGION

Zur spanenden Bearbeitung von zumindest einem Werkstück (1) auf einer Drehmaschine, wobei das Werkstück (1) in der Drehmaschine rotiert und der zumindest eine zu bearbeitende Bereich des Werkstücks (1) mit Hilfe zumindest eines Werkzeugs (3) der Drehmaschine bearbeitet wird, wobei das Werkzeug (3) zumindest parallel zur Drehachse (2) des Werkstücks (1) bewegt wird, wird gemäß der Erfindung das Werkzeug (3) parallel zur Drehachse (2) des Werkstücks (1) so bewegt, dass der bearbeitete Bereich des Werkstücks (1) rotationsasymmetrisch bezogen auf die Drehachse (2) des Werkstücks (1) nach der Bearbeitung ausgebildet ist. Ferner betrifft die Erfindung einen Kühlkanal (7), eine Kolbenwand (13) und eine Brennraummulde (9) eines Kolbens (6) sowie eine Drehmaschine.

Hybrid orbiting spindle for shaping non-circular holes

METHOD FOR THE PRODUCTION OF A SINGLE PART PISTON AND A PISTON PRODUCED BY SUCH A METHOD

HYBRID ORBITING SPINDLE FOR SHAPING NON-CIRCULAR HOLES

A machine tool assembly includes a high speed rotating spindle for forming extremely precise surface contours on a work piece. The spindle is supported on a spherical air bearing about its center of gravity. The spindle can be rotated through an air turbine drive system incorporated into the spherical air bearing to eliminate any undesirable moments about an axis perpendicular to the long spindle axis. The spindle is adjustable in pitch and yaw directions through the influence of X-Y actuators. The X-Y actuation system is preferably electromagnetic and provides a non-contact method of displacing the spindle shaft in a controlled manner at any speed. © KIPO & WIPO 2008 ...

Workpiece holding device

A piston holding device in which a conical register (16) is provided inside the skirt of a piston (2) and is engaged by a conical locating surface (15) on a tailstock (3). The tailstock (3) may also include a ram (17) which is adapted to push on the inside of a piston crown (11) and force the piston (2) against a headstock (1). The holding device is used during piston machining.

Herstellungsverfahren für Schmiedekörper

Die Anmeldung betrifft ein Verfahren zur effizienten Herstellung von Einzelteilen (12, 14, 22, 24) eines oder mehrerer mehrteiliger Schmiedekörper mit einer inneren Struktur. Das Verfahren umfasst dabei einen Schmiedeschritt des Schmiedens eines Rohlings (10, 20), der zumindest zwei zusammenhängende Einzelteile (12, 14, 22, 24) des einen, zweier oder mehrerer separater Schmiedekörper aufweist, und einen Vorbearbeitungsschritt, in dem zumindest eins der zusammenhängenden Einzelteile mit einer Spann- und/oder Anlagefläche (13, 15, 17, 23, 25, 27) versehen wird, über die ein vorbestimmbares Einspannen des Einzelteils in eine Bearbeitungsvorrichtung, beispielsweise in eine Drehmaschine, ermöglicht wird.

Engine piston and its manufacture

A method of forming a low-friction, helically ridged skirt surface of an engine piston 30 comprises cutting a continuous groove 40 in a piston body rotating about axis 34 so that adjacent groove turns intersect as ridges 42 and carry lubricating oil which forms a film on the ridged surface. The groove 40 may be cut by way of a diamond tool tip 60 modified to include a planing tip 70 fixed spatially with respect to the tip 60 so that after formation each ridge is planed flat to provide a plateau 44 between groove turns that exerts less film rupturing pressure against a cylinder wall whilst defining a uniformly flat outer surface for the piston. The cutting may vary the piston diameter towards the ends of the body to effect barreling in which the relationship between plateau width and groove depth vary.

BRIDGED BI-AROMATIC LIGANDS AND OLEFIN POLYMERIZATION CATALYSTS PREPARED THEREFROM

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal catalyst compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds, and polymerization processes utilizing the transition metal compounds for the production of olefin polymers.

ENGINE PISTON AND MANUFACTURE THEREOF

A method of forming a low-friction, helically ridged skirt surface of an engine piston 30 (Fif 2(a)) comprises cutting a continuous groove (40) in a piston body rotating about axis (34) so that adjacent groove turns intersect as ridges (42) and carry lubricating oil which forms a film on the ridged surface. The groove (40) is cut by way of a diamond tool tip (60) traversing along the axis (34). Whereas in a known, standard finish the ridges (42) have sharp peaks that can rupture the oil film, the tool is here modified to include a planing tip (70) fixed spatially with respect to the tip (60) so that after formation each ridge is planed flat to provide a plateau (44) between groove turns that exerts less film rupturing pressure against a cylinder wall whilst defining a uniformly flat outer surface for the piston. The cuting may vary the piston diameter towards the ends of the body to effect barreling in which the relationship between plateau width and groove depth vary.

Engine piston and manufacture thereof

VERFAHREN ZUR HERSTELLUNG EINES EINTEILIGEN KOLBENS

METHOD FOR THE PRODUCTION OF A SINGLE PART PISTON AND A PISTON PRODUCED BY SUCH A METHOD

The present invention relates to a method for producing a single part piston (20) for an internal combustion engine from a piston blank (10), with a cooling channel (15) that is open in the downward direction running circularly inside a piston head (11), and an annular recess (16) built between the piston head (11) and a piston shaft (13), wherein the piston head (11) and the piston shaft (13) are connected to each other by means of a piston hub (14), and wherein the annular recess (16) and the cooling channel (15) are machined into the piston blank (10) by means of a cutting operation. According to the invention, it is provided that, for the cutting operation of the cooling channel (15), a tool (17) is moved into the area of the cooling channel (15) in an arc-shaped pivoting movement (A) through the recess (16), and that the cooling channel (15) is cut. © KIPO & WIPO 2009 ...

PISTON AND METHOD OF MAKING A PISTON

A one-piece piston (20) including a combustion bowl (26) which is cast to its final form and includes at least one irregularity spaced from a central axis (A). The piston (20) is initially fabricated of an upper crown member (22) and a lower crown member (24), which are joined together. The piston (20) is then chucked into a machine tool (54), such as a CNC lathe, which locates either the piston's top surface (32) or a portion of the combustion bowl (26) and establishes its location as a datum plane. It is this datum plane which serves as a reference location for subsequent machining operations of the piston (20).

Piston for internal combustion engine shaft to the small size of the keystone ring processing process

Piston for a two-stroke engine and a method of making the same

A piston ( 5 ) for a two-stroke engine ( 1 ) has a piston base ( 19 ) and at least one piston pin boss ( 24 ). The piston pin boss ( 24 ) has a bore for accommodating a piston pin. At the piston pin boss ( 24 ), two mutually opposite-lying planar clamping surfaces ( 36, 37 ) are formed. The piston ( 5 ) is produced in a pressure die cast process and is thereafter clamped at the clamping surfaces ( 36, 37 ) and a stop surface ( 35 ). In this clamping state, all machining operations of the piston ( 5 ) can be carried out so that a high dimensional stability of the piston ( 5 ) results.

Piston and method of making a piston

A one-piece piston including a combustion bowl which is cast to its final form and includes at least one irregularity spaced from a central axis. The piston is initially fabricated of an upper crown member and a lower crown member, which are joined together. The piston is then chucked into a machine tool, such as a CNC lathe, which locates either the piston's top surface or a portion of the combustion bowl and establishes its location as a datum plane. It is this datum plane which serves as a reference location for subsequent machining operations of the piston.

Bearbeitungsprozess für axial niedrige Trapezringe für Kolben von Brennkraftmaschinen

Die Erfindung betrifft ein Verfahren zur Herstellung eines Kolbens (1) für Brennkraftmaschinen mit einer umlaufenden trapezförmigen Ringnut (2) zur Aufnahme von axial niedrigen Trapezringen, aufweisend einen Nutgrund (5) mit daran anschließenden Flächen (6, 7) und Nutflanken (3, 4), erfindungsgemäß wird in einem ersten Verfahrensschritt der Nutgrund (5) mit den daran anschließenden Flächen (6, 7) durch Bearbeitung mit einem Werkzeugstahl (15, 15') erstellt und in einem weiteren Verfahrensschritt werden die Nutflanken (3, 4) erstellt. Weiterhin wird ein nach dem beanspruchten Verfahren hergestellter Kolben (1) sowie ein Werkzeugstahl (15, 15') beansprucht.

WORKPIECE HOLDING DEVICE

Kolben für einen Zweitaktmotor und Verfahren zu dessen Herstellung

Kolben (5) für einen Zweitaktmotor mit einem Kolbenboden (19) und mit zwei Kolbenbolzenaugen (24), wobei die Kolbenbolzenaugen (24) jeweils eine Bohrung (27) zur Aufnahme eines Kolbenbolzens (38) besitzen, dadurch gekennzeichnet, daß an den Kolbenbolzenaugen (24) zwei einander gegenüberliegende, ebene Spannflächen (36, 37) ausgebildet sind und daß die Spannflächen (36, 37) parallel zur Längsachse (39) der Bohrung (27) im Kolbenbolzenauge (24) und zu einer Querebene (33) des Kolbens (5) geneigt verlaufen, wobei die Querebene (33) die Längsmittelachse (18) des Kolbens (5) und die Längsachse (39) der Bohrung (27) des Kolbenbolzenauges (24) enthält. Piston (5) for a two-stroke engine with a piston crown (19) and with two piston pin eyes (24), the piston pin eyes (24) each having a bore (27) for receiving a piston pin (38), characterized in that on the piston pin eyes ( 24) two opposing, flat clamping surfaces (36, 37) are formed and that the clamping surfaces (36, 37) parallel to the longitudinal axis (39) of the bore (27) in the piston pin eye (24) and to a transverse plane (33) of the piston ( 5) run inclined, the transverse plane (33) containing the longitudinal central axis (18) of the piston (5) and the longitudinal axis (39) of the bore (27) of the piston pin eye (24).

METHOD OF FORMING PISTON PIN HOLES AND BORING SYSTEM THEREFOR

PISTON AND METHOD FOR PRODUCING SAME

The invention relates to the machine processing of a piston (1) for an internal combustion engine on a lathe, wherein the piston (1) rotates in the lathe and the at least one region of the piston (1) to be processed is processed with the aid of at least one tool (8) of the lathe, wherein the tool (8) is moved at least parallel to the rotation axis of the piston (1) and the processed region is designed as a combustion bowl (3) based on the rotation axis of the piston (1). According to the invention, the tool (8) is moved parallel to the rotation axis of the piston (1) such that the processed region of the piston (1) is designed as a rotation-symmetrical combustion bowl (3) based on the rotation axis of the piston (1) after processing. The invention further relates to a piston (1), an injection nozzle (7) and an internal combustion engine, preferably a diesel internal combustion engine.

Piston

A piston for an internal combustion engine may include a plurality of pin bores for accommodating a piston pin. The pin bores may be transversely oval to a longitudinal axis of the piston. The pin bores may be formed in a circular cylindrical manner at a zenith of α=0° and at a nadir of α=180°. The pin bores may be formed in an oval manner with an oil-holding volume at an equator of α=90° and α=270°. The pin bores may include a transition between the equator and the zenith and between the equator and the nadir that runs in a continuous and differentiable manner.

PISTON AND METHOD OF MAKING A PISTON

피스톤 핀 구멍을 형성하는 방법 및 피스톤 핀 구멍 천공 시스템

... 피스톤 핀 구멍 천공 시스템 및 피스톤 핀 구멍 천공 시스템으로 피스톤 핀 구멍을 형성하는 방법은 슬라이드 부재에 의해 지지된 고정부에 피스톤을 고정시키는 것을 포함한다. 그 다음에, 절삭 부재를 제1 축을 중심으로 회전시키고 상기 고정부와 함께 슬라이드 부재를 제1 축을 따라서 절삭 부재쪽으로 이동시키고 피스톤을 절삭 부재와 절삭되도록 접촉시킨다. 또한, 상기 고정부를 상기 제1 축을 가로질러서 각각 뻗어 있는 제2 축 및 제3 축을 따라서 이동시키고, 절삭 부재로 피스톤에 원하는 핀 구멍 형상을 기계가공한다.

PISTON

Die vorliegende Erfindung betrifft einen Kolben (1) für einen Verbrennungsmotor mit Bolzenbohrungen zur Aufnahme eines Kolbenbolzen, wobei die Bolzenbohrungen (2) queroval zur Längsachse des Kolbens (1) ausgebildet sind. Erfindungswesentlich ist dabei, dass die Bolzenbohrungen (2) bei α=0° (Zenit) und bei α=180° (Nadir) kreiszylindrisch und bei α=90°und α=270°(Äquator) oval mit einem Ölhaltevolumen ausgebildet sind, wobei ein Übergang zwischen dem Äquator und dem Zenit bzw. zwischen dem Äquator und dem Nadir stetig und differenzierbar, das heißt ohne Kanten verläuft. Hierdurch kann ein belastbarer und gut geschmierter Kolben (1) kostengünstig gefertigt werden.

METHOD TO FORM GROOVE STRUCTURE ON INTERNAL SURFACE OF PIN BORE OF PISTON

The present invention relates to a method to form a groove structure (2) on an internal surface (3) of a pin bore (4) of a piston (1). According to the present invention, a boring tool, which comprises a boring bar (7) with a cutting tool (6) attached, rotates in a rotating direction (10) to move forward into the pin bore (4). During the process, one or more spiral first grooves (16) of the groove structure (2) having a first depth (19) and a first width (23) are introduced onto the internal surface (3). According to the present invention, afterwards, the boring bar (7) keeps the rotating direction (10) to return from the pin bore (4). While the boring bar (7) is returning, one or more spiral second grooves (18) of the groove structure having a second depth (20) distinguished from the first depth (19) and a rotating direction opposite to that of the first grooves (16) are introduced into the internal surface (3). Accordingly, the groove structure (2) is more simply, more cost-efficiently ...

método para produzir um pistão para um motor de combustão e pistão produzido com este método

Herstellungsverfahren für Schmiedekörper

Verfahren zur effizienten Herstellung von Einzelteilen (12, 14, 22, 24) eines oder mehrerer Schmiedekörper mit einer inneren Struktur, umfassend einen Schmiedeschritt des Schmiedens eines Rohlings (10, 20), der zumindest zwei zusammenhängende Einzelteile (12, 14, 22, 24) des einen, zweier oder mehrerer separater Schmiedekörper aufweist, und einen Vorbearbeitungsschritt, in dem zumindest eins der zusammenhängenden Einzelteile mit einer Spann- und/oder Anlagefläche (13, 15, 17, 23, 25, 27) versehen wird, über die ein vorbestimmbares Einspannen des Einzelteils in eine Bearbeitungsvorrichtung, beispielsweise in eine Drehmaschine, ermöglicht wird.

METHOD OF FORMING PISTON PIN HOLES AND BORING SYSTEM THEREFOR

A piston pin hole boring system and method of forming pin holes therewith includes fixing a piston to a fixture supported by a slide member. Then, rotating a cutting member about a first axis and moving the slide member with the fixture thereon toward the cutting member along the first axis and bringing the piston into cutting contact with the cutting member. Further, moving the fixture along second and third axes, each extending transversely to the first axis and machining the desired pin hole contours in the piston with the cutting member.

METHOD FOR THE PRODUCTION OF A SINGLE PART PISTON AND A PISTON PRODUCED BY SUCH A METHOD

The present invention relates to a method for producing a single part piston (20) for an internal combustion engine from a piston blank (10), with a cooling channel (15) that is open in the downward direction running circularly inside a piston head (11), and an annular recess (16) built between the piston head (11) and a piston shaft (13), wherein the piston head (11) and the piston shaft (13) are connected to each other by means of a piston hub (14), and wherein the annular recess (16) and the cooling channel (15) are machined into the piston blank (10) by means of a cutting operation. According to the invention, it is provided that, for the cutting operation of the cooling channel (15), a tool (17) is moved into the area of the cooling channel (15) in an arc-shaped pivoting movement (A) through the recess (16), and that the cooling channel (15) is cut.

METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE

A method for producing a piston for an internal combustion engine, which piston has a piston head, an annular portion and a piston skirt which has two opposite piston pin bosses, shaft recesses being made into the regions of the radially outer end faces of the piston pin bosses during the final machining of the outer surface of the piston blank, the recesses extending in the radial direction. The final machining of the outer surface of the piston blank, including the shaping of the grooves into the annular portion and the shaping of the skirt recesses into the piston skirt, is carried out using a lathe, the position of the turning tool thereof being freely programmable depending on the rotational position of the piston.

Noncircular working device with a plurality of tools

A working device of a noncircular workpiece, such as a piston of an internal combustion engine, is improved. A workpiece (10) is held by a work spindle and rotated. A noncircular working device (100) has a noncircular working unit base (110) and is provided with a servo motor (104). A noncircular working unit (120) is positioned along a Y axis, and an arbitrary cutting tool (133) is selected from a cutting tool group (130). A servo motor (112) reciprocates the noncircular working unit (120) on an X2 axis in synchronization with the rotation of the work spindle and performs noncircular working of the workpiece (10).

Method for the production of a single part piston and a piston produced by such a method

The present invention relates to a method for producing a single part piston (20) for an internal combustion engine from a piston blank (10), with a cooling channel (15) that is open in the downward direction running circularly inside a piston head (11), and an annular recess (16) built between the piston head (11) and a piston shaft (13), wherein the piston head (11) and the piston shaft (13) are connected to each other by means of a piston hub (14), and wherein the annular recess (16) and the cooling channel (15) are machined into the piston blank (10) by means of a cutting operation. According to the invention, it is provided that, for the cutting operation of the cooling channel (15), a tool (17) is moved into the area of the cooling channel (15) in an arc-shaped pivoting movement (A)through the recess (16), and that the cooling channel (15) is cut.

LOCHBOHRMASCHINE UND VERFAHREN ZUM BOHREN EINES OVALEN LOCHS UND EINES LOCHS MIT INNENDURCHMESSERÄNDERUNG MITTELS EINER LOCHBOHRMASCHINE

Bereitgestellt sind eine Lochbohrmaschine und ein Verfahren zum Bohren eines elliptischen Lochs und eines Loch mit variablem Innendurchmesser unter Verwendung einer Lochbohrmaschine, die eine präzise Formgebung eines elliptischen Lochs ermöglichen und außerdem ein präzises Bohren von komplexen Löchern wie beispielsweise Löchern mit variablem Innendurchmesser ermöglichen. Eine Lochbohrmaschine 100 ist mit einer Hauptwelle 101 und einer Zusatzwelle 120 versehen, um zwei Enden eines Bohrwerkzeugs 102 zu halten, das eine Schneidklinge 103 aufweist. Die Hauptwelle 101 ist mit einem Hauptwellenantriebsmotor 106, um das Bohrwerkzeug 102 über eine kreisförmige Bahn zu drehen und zu verschieben, und mit einem Werkzeugdrehmotor 120b versehen, um das Bohrwerkzeug 102 schnell zu drehen. Die Zusatzwelle 120 ist mit einem Zusatzwellenantriebsmotor 120b versehen, der bewirkt, dass ein Werkzeugeinpassteil 120a, in das ein distales Endteil des Bohrwerkzeugs 102 gleitfähig passt, auf rotierende Weise synchron ...

Method for producing a piston for an internal combustion engine and piston produced by said method

Engine piston and manufacture thereof

A method of forming a low-friction, helically ridged skirt surface of an engine piston 30 (FIG. 2(a)) comprises cutting a continuous groove (40) in a piston body rotating about axis (34) so that adjacent groove turns intersect as ridges (42) and carry lubricating oil which forms a film on the ridged surface. The groove (40) is cut by way of a diamond tool tip (60) traversing along the axis (34). Whereas in a known, standard finish the ridges (42) have sharp peaks that can rupture the oil film, the tool is here modified to include a planing tip (70) fixed spatially with respect to the tip (60) so that after formation each ridge is planed flat to provide a plateau (44) between groove turns that exerts less film rupturing pressure against a cylinder wall whilst defining a uniformly flat outer surface for the piston. The cuting may vary the piston diameter towards the ends of the body to effect barreling in which the relationship between plateau width and groove depth vary.

Piston and method of making a piston

A one-piece piston including a combustion bowl which is cast to its final form and includes at least one irregularity spaced from a central axis. The piston is initially fabricated of an upper crown member and a lower crown member, which are joined together. The piston is then chucked into a machine tool, such as a CNC lathe, which locates either the piston's top surface or a portion of the combustion bowl and establishes its location as a datum plane. It is this datum plane which serves as a reference location for subsequent machining operations of the piston.

DREHWERKZEUG, VERFAHREN ZUR HERSTELLUNG EINES KOLBENS, UND KOLBEN

Ein Drehwerkzeug umfasst einen Montagebereich 21, der an einer Drehmaschine angebracht ist und sich derart erstreckt, dass er die axiale Richtung eines Kolbens kreuzt, und einen Schneidkantenbereich 23, der an einem distalen Ende des Montagebereichs 21 bereitgestellt ist. Das distale Ende des Schneidkantenbereichs 23 beinhaltet einen bogenförmigen Schneidkantenbereich 24, der einen konkaven Nutbereich von einem Mantelbereich des Kolbens bearbeitet, und einen linearen Schneidkantenbereich 25, der zwischen einem konkaven Nutbereich und einem konkaven Nutbereich lokalisiert ist und einen Plateauabschnitt bearbeitet. Der bogenförmige Schneidkantenbereich 24 und der lineare Schneidkantenbereich 25 sind Seite an Seite parallel zu der axialen Richtung ausgelegt. A turning tool includes a mounting portion 21 attached to a lathe and extending to cross the axial direction of a piston and a cutting edge portion 23 provided at a distal end of the mounting portion 21. The distal end of the cutting edge portion 23 includes an arcuate cutting edge portion 24 that machines a concave groove portion from a skirt portion of the plunger, and a linear cutting edge portion 25 that is located between a concave groove portion and a concave groove portion and machines a plateau portion. The arcuate cutting edge portion 24 and the linear cutting edge portion 25 are laid out side by side parallel to the axial direction.

Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor und mittels dieses Verfahrens hergestellter Kolben

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Kolbens (10) für einen Verbrennungsmotor mit einem Kolbenoberteil (11) und einem Kolbenunterteil (18), wobei das Kolbenoberteil (11) einen Kolbenboden (13) mit einer einen Dom (14) aufweisenden Verbrennungsmulde (13), einen umlaufenden Feuersteg (15) sowie eine umlaufende Ringpartie (16) aufweist, wobei das Kolbenunterteil (18) mit Nabenbohrungen (21) versehene Kolbennaben (19) aufweist, welche über Laufflächen (23, 24) miteinander verbunden sind, mit den folgenden Verfahrensschritten: a) Herstellen eines Rohlings (11', 111', 211') des Kolbenoberteils (11) mittels eines Umformverfahrens, b) Herstellen eines Rohlings des Kolbenunterteils (18) mittels eines Umformverfahrens oder eines Gießverfahrens, c) Verbinden der Rohlinge von Kolbenoberteil (11) und Kolbenunterteil (18) zu einem Kolbenkörper mittels eines Schweißverfahrens, d) Nachbearbeitung und/oder Fertigbearbeitung des Kolbenkörpers zum fertigen Kolben (10). Erfindungsgemäß ...

pistão

resumo patente de invenção: "pistão". a presente invenção refere-se a um pistão (1) para um motor de combustão interna com furos de pino para recepção de um pino de pistão, sendo que os furos de pino (2) estão formados de modo transversalmente oval ao eixo longitudinal do pistão (1). é essencial para a invenção que os furos de pino (2) em ?=0? (zênite) e em ?=180? (nadir) estejam formados cilindricamente com base circular e em ?=90 e ?=270? (equador), de modo oval, com um volume de retenção de óleo, sendo que uma transição entre o equador e o zênite ou entre o equador e o nadir estende-se continuamente e de modo diferenciável, isto é, sem cantos. desse modo, pode ser produzido um pistão (1) de modo eficiente em custos, com boa capacidade de carga e bem lubrificado.

METHOD OF FORMING PISTON PIN HOLES AND BORING SYSTEM THEREFOR

A piston pin hole boring system and method of forming pin holes therewith includes fixing a piston to a fixture supported by a slide member. Then, rotating a cutting member about a first axis and moving the slide member with the fixture thereon toward the cutting member along the first axis and bringing the piston into cutting contact with the cutting member. Further, moving the fixture along second and third axes, each extending transversely to the first axis and machining the desired pin hole contours in the piston with the cutting member.

Kolben für einen Zweitaktmotor und Verfahren zu dessen Herstellung

Ein Kolben (5) für einen Zweitaktmotor (1) besitzt einen Kolbenboden (19) und mindestens ein Kolbenbolzenauge (24). Das Kolbenbolzenauge (24) besitzt eine Bohrung zur Aufnahme eines Kolbenbolzens. An dem Kolbenbolzenauge (24) sind zwei einander gegenüberliegende, ebene Spannflächen (36, 37) ausgebildet. Der Kolben (5) wird in einem Druckgussverfahren hergestellt und anschließend an den Spannflächen (36, 37) und einer Anschlagfläche (35) aufgespannt. In diesem Spannzustand lassen sich alle spanenden Bearbeitungen des Kolbens (5) durchführen, so dass sich eine hohe Maßhaltigkeit des Kolbens (5) ergibt. A piston (5) for a two-stroke engine (1) has a piston head (19) and at least one piston pin eye (24). The piston pin eye (24) has a bore for receiving a piston pin. On the piston pin eye (24) two opposing, planar clamping surfaces (36, 37) are formed. The piston (5) is produced in a die-casting process and then clamped on the clamping surfaces (36, 37) and a stop surface (35). In this clamping state, all machining operations of the piston (5) can be carried out, so that a high dimensional accuracy of the piston (5) results.

ENGINE PISTON AND MANUFACTURE THEREOF

A method of forming a low-friction, helically ridged skirt surface of an engine piston 30 (Fif 2(a)) comprises cutting a continuous groove (40) in a piston body rotating about axis (34) so that adjacent groove turns intersect as ridges (42) and carry lubricating oil which forms a film on the ridged surface. The groove (40) is cut by way of a diamond tool tip (60) traversing along the axis (34). Whereas in a known, standard finish the ridges (42) have sharp peaks that can rupture the oil film, the tool is here modified to include a planing tip (70) fixed spatially with respect to the tip (60) so that after formation each ridge is planed flat to provide a plateau (44) between groove turns that exerts less film rupturing pressure against a cylinder wall whilst defining a uniformly flat outer surface for the piston. The cuting may vary the piston diameter towards the ends of the body to effect barreling in which the relationship between plateau width and groove depth vary.

PISTON WITH COMPLEX SHAPED COMBUSTION BOWL AND COOLING GALLERY AND METHOD OF CONSTRUCTION THEREOF

A piston and method of construction thereof is provided. The piston has a lower member with diametrically opposite skirt portions and axially aligned pin bores and an upper member joined to the lower member. The upper member has a substantially planar upper combustion surface and a combustion bowl depending from the upper combustion surface. An undercrown surface is formed directly opposite the combustion bowl and a combustion bowl rim transitions the combustion bowl with the upper combustion surface. At least one of the combustion bowl, the undercrown surface and the upper combustion surface has a machined surface and an “as forged” surface.

복잡한 형상의 연소 보울과 냉각 통로를 가진 피스톤 및 상기 피스톤의 제작 방법

... 피스톤 및 피스톤의 제작 방법을 제공한다. 상기 피스톤은 정반대로 배치된 스커트 부분과 축방향으로 정렬된 핀 보어를 가진 하부 부재와 상기 하부 부재에 연결될 상부 부재를 가지고 있다. 상기 상부 부재는 대체로 평면인 상부 연소면과 이 상부 연소면으로부터 아래로 뻗은 연소 보울을 가지고 있다. 언더크라운면이 상기 연소 보울의 정반대 쪽에 형성되어 있고 상기 연소 보울에서 상기 상부 연소면으로 바뀌는 곳에 연소 보울 림이 있다. 상기 연소 보울, 상기 언더크라운면 그리고 상기 상부 연소면 중의 적어도 하나가 기계가공된 면과 단조가공된 면을 가지고 있다.

Formgestaltete Bohrungsprofile für eine Bolzenlagerung

Verfahren zur Gestaltung eines Bohrungsprofils von unrunden Bolzenbohrungen (2a, 2b), zur Aufnahme von Lagerbuchsen in Kolben (3) einer Brennkraftmaschine, mittels einer durch die Bolzenbohrungen (2a, 2b) geführten rotierenden und linear verschiebbaren, zwischen einer festen Zentrierspitze (7) und einer beweglichen Zentrierspitze (6) aufgenommenen Bohrstange (4) und zugehörigem Schneidwerkzeug (5), dadurch gekennzeichnet, dass die bewegliche Zentrierspitze (6) über einen Schwinghebel (10) eines elektronischen Formbolokopfes (14) schwenkbar ist, wobei in einem zu einer Spindel (11) radial beabstandeten Gehäuse (22) von zumindest zwei Linearmotoren (21a, 21b) ein über Hydrostatiklager geführter Schlitten (20a, 20b) angetrieben wird, wobei der Schlitten (20a, 20b) auf einen Gleitring (17) wirkt, durch den der mit der Spindel (11) verbundenen schwenkbaren Schwinghebel (10) einschließlich integrierter beweglicher Zentrierspitze (6) abgestützt wird, wodurch die Bohrstange (4) gegenüber einer ...

Method for designing hole profile of non-circular bolt holes for receiving bearing bushes in piston of internal combustion engine, involves pivoting movable center point over oscillating lever of electronic mold head

The method involves pivoting a movable center point (6) over an oscillating lever (10) of an electronic mold head (14). The boring bar (4) is linked opposite to a longitudinal axis (13) or a middle layer for forming geometrically differently shaped hole profiles in the bolt holes (2a,2b). An independent claim is also included for a device for designing a hole profile of non-circular bolt holes for receiving bearing bushes in the piston of an internal combustion engine.

Verfahren zur Herstellung eines einteiligen Kolbens sowie damit hergestellter Kolben

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines einteiligen Kolbens (20) für einen Verbrennungsmotor aus einem Kolbenrohling (10), mit einem in einem Kolbenkopf (11) ringförmig umlaufenden, nach unten offenen Kühlkanal (15) und einer zwischen dem Kolbenkopf (11) und einem Kolbenschaft (13) ausgebildeten ringförmigen Ausnehmung (16), wobei der Kolbenkopf (11) und der Kolbenschaft (13) mittels Kolbennaben (14) miteinander verbunden sind und wobei die ringförmige Ausnehmung (16) und der Kühlkanal (15) durch spanabhebende Bearbeitung in den Kolbenrohling (10) eingearbeitet werden. Erfindungsgemäß ist vorgesehen, dass zur spanabhebenden Bearbeitung des Kühlkanals (15) ein Werkzeug (17) in einer bogenförmigen Schwenkbewegung (A) durch die Ausnehmung (16) in den Bereich des Kühlkanals (15) hineinbewegt und der Kühlkanal (15) ausgearbeitet wird.

Verfahren zum Herstellen einer Rillenstruktur in einer Innenoberfläche eines Kolbens

Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen einer Rillenstruktur (2) in einer Innenoberfläche (3) einer Bolzenbohrung (4) eines Kolbens (1), wobei ein Meißel aus einer Bohrstange (7) mit einem daran angebrachten Schneidwerkzeug (6) in einer Rotationsrichtung (10) rotiert und in die Bolzenbohrung (4) eingeschoben wird und dabei zumindest eine schraubenförmige erste Rille (16) der Rillenstruktur (2) mit einer ersten Tiefe (19) und einer ersten Breite (23) in die Innenoberfläche (3) eingebracht wird. Erfindungswesentlich ist hierbei, dass die Bohrstange (7) anschließend aus der Bolzenbohrung (4) unter Beibehaltung der Rotationsrichtung (10) herausbewegt wird, wobei beim Herausbewegen der Bohrstange (7) zumindest eine schraubenförmige zweite Rille (18) der Rillenstruktur (2) mit einer zur ersten Tiefe (19) unterschiedlichen zweiten Tiefe (20) und einem im Vergleich zur ersten schraubenförmigen Rille 16) entgegengesetzten Drehsinn in die Innenoberfläche (3) eingebracht wird ...

PISTON AND METHOD FOR PRODUCING SAME

The invention relates to the machine processing of a piston (1) for an internal combustion engine on a lathe, wherein the piston (1) rotates in the lathe and the at least one region of the piston (1) to be processed is processed with the aid of at least one tool (8) of the lathe, wherein the tool (8) is moved at least parallel to the rotation axis of the piston (1) and the processed region is designed as a combustion bowl (3) based on the rotation axis of the piston (1). According to the invention, the tool (8) is moved parallel to the rotation axis of the piston (1) such that the processed region of the piston (1) is designed as a rotation-symmetrical combustion bowl (3) based on the rotation axis of the piston (1) after processing. The invention further relates to a piston (1), an injection nozzle (7) and an internal combustion engine, preferably a diesel internal combustion engine.

PISTON

A piston for an internal combustion engine may include a plurality of pin bores for accommodating a piston pin. The pin bores may be transversely oval to a longitudinal axis of the piston. The pin bores may be formed in a circular cylindrical manner at a zenith of =0° and at a nadir of =180°. The pin bores may be formed in an oval manner with an oil-holding volume at an equator of =90° and =270°. The pin bores may include a transition between the equator and the zenith and between the equator and the nadir that runs in a continuous and differentiable manner.

Method for producing a piston for an internal combustion engine and piston produced by said method

A method for producing a piston for an internal combustion engine may include the steps of: producing a piston upper part from a first blank via a deformation process; producing a piston lower part from a second blank via at least one of a deformation process and a casting process; connecting the first blank of the piston upper part and the second blank of the piston lower part to form a piston body via a welding process; and performing at least one of a secondary machining process and a finish machining process of the piston body to produce the piston.

ENGINE PISTON MANUFACTURE

Live center

Piston

The present invention relates to a piston (1) for an internal combustion engine with pin bores for accommodating a piston pin, wherein pin bores (2) are formed in a transversely oval manner relative to the longitudinal axis of the piston (1). It is essential to the invention that the pin bores (2) are formed circular cylindrically at alpha=0 DEG (zenith) and at alpha=180 DEG (nadir) and ovally at alpha=90 DEG and alpha=270 DEG (equator) with an oil holding volume, wherein a transition between the equator and zenith and between the equator and the nadir is continuous and differentiable, i.e. without edges. In this way, a well-lubricated piston (1) with good load capabilities can be produced cost-effectively.

pistão para um motor de combustão interna com furos de pino para recepção de um pino de pistão e processo para produção de um pistão

resumo patente de invenção: "pistão". a presente invenção refere-se a um pistão (1) para um motor de combustão interna com furos de pino para recepção de um pino de pistão, sendo que os furos de pino (2) estão formados de modo transversalmente oval ao eixo longitudinal do pistão (1). é essencial para a invenção que os furos de pino (2) em ?=0? (zênite) e em ?=180? (nadir) estejam formados cilindricamente com base circular e em ?=90 e ?=270? (equador), de modo oval, com um volume de retenção de óleo, sendo que uma transição entre o equador e o zênite ou entre o equador e o nadir estende-se continuamente e de modo diferenciável, isto é, sem cantos. desse modo, pode ser produzido um pistão (1) de modo eficiente em custos, com boa capacidade de carga e bem lubrificado.

Double-sided drilling fixture for die-forged pistons and double-sided drilling process thereof

The invention relates to a double-sided drilling fixture for die-forged pistons and a double-sided drilling process thereof. It overcomes the defects of low efficiency and accuracy of the double-sided drilling operation for die-forged pistons in the prior art. The invention comprises a die-forged piston, a fixture base assembly, an upper load-resisting assembly and a lower expansion-resisting assembly. The upper load-resisting assembly is installed on the fixture base assembly and disposed above the die-forged piston. A fixation base, whose upper surface shape is the same as internal surface shape of the die-forged piston, is installed above the fixture base assembly. The die-forged piston is sleeved on the fixation base. The invention achieves simultaneous drilling on both sides of the two rear skirt surfaces of die-forged pistons and delivers quick clamping and automatic fixation, significantly reducing the difficulty in the assembly of drilling plate and workpiece and increasing the ...

Verfahren und Werkzeugmaschine zur spanenden Bearbeitung

Zur spanenden Bearbeitung von zumindest einem Werkstück (1) auf einer Drehmaschine, wobei das Werkstück (1) in der Drehmaschine rotiert und der zumindest eine zu bearbeitende Bereich des Werkstücks (1) mit Hilfe zumindest eines Werkzeugs (3) der Drehmaschine bearbeitet wird, wobei das Werkzeug (3) zumindest parallel zur Drehachse (2) des Werkstücks (1) bewegt wird, wird gemäß der Erfindung das Werkzeug (3) parallel zur Drehachse (2) des Werkstücks (1) so bewegt, dass der bearbeitete Bereich des Werkstücks (1) rotationsasymmetrisch bezogen auf die Drehachse (2) des Werkstücks (1) nach der Bearbeitung ausgebildet ist. Ferner betrifft die Erfindung einen Kühlkanal (7), eine Kolbenwand (13) und eine Brennraummulde (9) eines Kolbens (6) sowie eine Drehmaschine.

METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE

The invention relates to a method for producing a piston (1) for an internal combustion engine, which piston comprises a piston head (2), an annular portion (4) and a piston skirt (5) which has two opposite piston pin bosses (6, 6'), shaft recesses being made into the regions of the radially outer end faces (8, 8') of the piston pin bosses (6, 6') during the final machining of the outer surface of the piston blank, said recesses extending in the radial direction. According to a simple and inexpensive method, the final machining of the outer surface of the piston blank, including the shaping of the grooves into the annular portion (4) and the shaping of the skirt recesses (9, 9') into the piston skirt (5), is carried out using a lathe (26), the position of the turning tool thereof being freely programmable depending on the rotational position of the piston (1).

Hybrid orbiting spindle for shaping non-circular holes

A machine tool assembly includes a high speed rotating spindle for forming extremely precise surface contours on a work piece. The spindle is supported on a spherical air bearing about its center of gravity. The spindle can be rotated through an air turbine drive system incorporated into the spherical air bearing to eliminate any undesirable moments about an axis perpendicular to the long spindle axis. The spindle is adjustable in pitch and yaw directions through the influence of X-Y actuators. The X-Y actuation system is preferably electromagnetic and provides a non-contact method of displacing the spindle shaft in a controlled manner at any speed.

MASCHINENKOLBENHERSTELLUNG

Method for producing a groove structure in an internal surface of a piston

METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE AND PISTON PRODUCED BY SAID METHOD.

METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE AND PISTON PRODUCED BY SAID METHOD.

The invention relates to a method for producing a piston (10) for an internal combustion engine, comprising a piston upper part (11) and a piston lower part (18), wherein the piston upper part (11) has a piston floor (12) having a combustion recess (13) having a dome (14), a circumferential fire land (15) and a circumferential ring section (16), wherein the piston bottom part (18) comprises piston bosses (19) provided with boss bores (21), said piston bosses being connected to one another via running surfaces (23, 24). According to the invention the method comprises the following steps: a) producing a blank (11', 111', 211') of the piston upper part (11) by means of a forming method, b) producing a blank of the piston lower part (18) by means of a forming method or a casting method, c) connecting the blanks of piston upper part (11) and piston lower part (18) by a welding method to form a piston body, d) secondary machining and/or finish-machining the piston body to form a finished piston ...

Kolben

Die vorliegende Erfindung betrifft einen Kolben (1) für einen Verbrennungsmotor mit Bolzenbohrungen zur Aufnahme eines Kolbenbolzen, wobei die Bolzenbohrungen (2) queroval zur Längsachse des Kolbens (1) ausgebildet sind. Erfindungswesentlich ist dabei, dass die Bolzenbohrungen (2) bei = 0° (Zenit) und bei = 180° (Nadir) kreiszylindrisch und bei = 90° und = 270° (Äquator) oval mit einem Ölhaltevolumen ausgebildet sind, wobei ein Übergang zwischen dem Äquator und dem Zenit bzw. zwischen dem Äquator und dem Nadir stetig und differenzierbar, das heißt ohne Kanten verläuft. Hierdurch kann ein belastbarer und gut geschmierter Kolben (1) kostengünstig gefertigt werden.

MASCHINENKOLBENHERSTELLUNG

Piston with complex shaped combustion bowl and cooling gallery and method of construction thereof

PISTON

The present invention relates to a piston (1) for an internal combustion engine with pin bores for accommodating a piston pin, wherein the pin bores (2) are formed in a transversely oval manner relative to the longitudinal axis of the piston (1). It is essential to the invention that the pin bores (2) are formed circular cylindrically at α=0° (zenith) and at α=180° (nadir) and ovally at α=90° and α=270° (equator) with an oil holding volume, wherein a transition between the equator and zenith and between the equator and the nadir is continuous and differentiable, i.e. without edges. In this way, a well-lubricated piston (1) with good load capabilities can be produced cost-effectively.

Producing friction-welded piston, comprises producing piston upper part by processing inner contour of forged piston upper part blank with rough drilling tool and postprocessing contour of drilled upper part blank with special drilling bar

The method comprises producing an upper part of a piston by processing an inner contour of a forged piston upper part blank (A2) with a rough drilling tool (A1), postprocessing the inner contour of the drilled piston upper part blank with a special drilling bar for machining of radii in a dome area of the piston upper part blank, processing a combustion chamber side of the piston upper part blank with a broaching tool (A3) for producing a wall strength and form of the combustion chamber and processing the combustion chamber side with a counterboring tool (A4). The method comprises producing an upper part of a piston by processing an inner contour of a forged piston upper part blank (A2) with a rough drilling tool (A1), postprocessing the inner contour of the drilled piston upper part blank with a special drilling bar for machining of radii in a dome area of the piston upper part blank, processing a combustion chamber side of the piston upper part blank with a broaching tool (A3) for producing ...

Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor und mittels dieses Verfahrens hergestellter Kolben

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Kolbens (10) für einen Verbrennungsmotor mit einem Kolbengrundkörper (11) und einem Kolbenringteil (17), wobei der Kolbengrundkörper (11) eine einen Dom (13) aufweisende Verbrennungsmulde (12) sowie mit Nabenbohrungen (15) versehene Kolbennaben (14) aufweist, welche über Laufflächen (16) miteinander verbunden sind, wobei der Kolbenringteil (17) einen Kolbenboden (18), einen umlaufenden Feuersteg (19) sowie eine umlaufende Ringpartie (21) aufweist, und wobei der Kolbengrundkörper (11) und das Kolbenringteil (17) einen umlaufenden Kühlkanal (22) bilden, mit den folgenden Verfahrensschritten: a) Herstellen eines Rohlings (11') des Kolbengrundkörpers (11) mittels eines Umformverfahrens, wobei die Kontur der Verbrennungsmulde (12) außerhalb eines Dombereichs (13a) fertig hergestellt wird, b) Herstellen eines Rohlings (17') des Kolbenringteils (17) mittels eines Umformverfahrens oder eines Gießverfahrens, c) Vorbearbeiten ...

METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE AND PISTON PRODUCED BY SAID METHOD

A method for producing a piston for an internal combustion engine may include the steps of: producing a first blank corresponding to a piston main body via a deformation process; producing a second blank corresponding to a piston ring part via at least one of a deformation process and a casting process; pre-machining the first blank and the second blank, and finishing a welding surface of the first blank and a welding surface of the second blank via machining; connecting the first blank and the second blank via welding the welding surface of the first blank to the welding surface of the second blank to form a piston body; and performing at least one of a secondary machining process and a finish machining process on the piston body to produce the piston.

Method for producing a piston for an internal combustion engine and piston produced by said method

Piston

método para a produção de um pistão para um motor de combustão interna e pistão produzido pelo referido método

resumo patente de invenção: "método para a produção de um pistão para um motor de combustão interna e pistão produzido pelo referido método". método para a produção de um pistão (10) para um motor de combustão interna, com um cabeçote de pistão (11) e uma parte de anel de pistão (17), em que o cabeçote de pistão (11) tem uma pré-câmara de combustão (12) que compreende um domo (13) e saliências de pistão (14) providas com orifícios de saliência (15), os quais são conectados em conjunto por meio de faces de contato (16), em que a parte de anel de pistão (17) compreende uma coroa de pistão (18), uma saia de pistão circunferencial (19) e uma seção de anel circunferencial (21), e em que o cabeçote de pistão (11) e a parte de anel de pistão (17) formam um canal de arrefecedor circunferencial (22) com as etapas de método a seguir: a) produção de uma peça básica (11') para o cabeçote de pistão (11) por um método de formação, em que o contorno da pré-câmara de combustão (12) é acabado fora de uma área de domo (13a), b) produção de uma peça básica (17') para a parte de anel de pistão (17) por meio de um método de formação ou de um método de fundição, c) trabalho preliminar das peças básicas (11', 17') com o acabamento de pontos de soldagem (26, 28; 27, 29), d) conexão das peças básicas trabalhadas preliminarmente (11'', 17'') do cabeçote de pistão (11) e da parte de anel de pistão (17) em um corpo de pistão (30) por um processo de soldagem, e) retrabalho e/ou acabamento do corpo de pistão (30) em um pistão acabado (10).

METHOD FOR PRODUCING A GROOVE STRUCTURE IN AN INTERNAL SURFACE OF A PISTON

process of making a piston feety

Noncircular working device

A working device of a noncircular workpiece, such as a piston of an internal combustion engine, is improved. A workpiece 10 is held by a work spindle and rotated. A noncircular working device 100 has a noncircular working unit base 110 and is provided with a servo motor 104. A noncircular working unit 120 is positioned along a Y axis, and an arbitrary cutting tool 133 is selected from a cutting tool group 130. A servo motor 112 reciprocates the noncircular working unit 120 on an X 2 axis in synchronization with the rotation of the work spindle and performs noncircular working of the workpiece 10.

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal catalyst compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds, and polymerization processes utilizing the transition metal compounds for the production of olefin polymers.

ligandos biaromáticos em ponte e catalisadores de polimerização de olefina preparados a partir dos mesmos

novos ligandos de fenol biaromático em ponte e compostos de catalisador de metal de transição derivados dos mesmos são divulgados. também são divulgados métodos para fazer os ligandos e compostos de metal de transição, e processos de polimerização utilizando os compostos de metal de transição para a produção de polímeros de olefina. novel bridged biaromatic phenol ligands and transition metal catalyst compounds derived therefrom are disclosed. Also disclosed are methods for making ligands and transition metal compounds, and polymerization processes using transition metal compounds for the production of olefin polymers.

Piston for a two-stroke engine and a method of making the same

PISTON AND METHOD OF MAKING A PISTON

A one-piece piston including a combustion bowl which is cast to its final form and includes at least one irregularity spaced from a central axis. The piston is initially fabricated of an upper crown member and a lower crown member, which are joined together. The piston is then chucked into a machine tool, such as a CNC lathe, which locates either the piston's top surface or a portion of the combustion bowl and establishes its location as a datum plane. It is this datum plane which serves as a reference location for subsequent machining operations of the piston. 1. A method of making a piston comprising the steps of:preparing a single piece upper crown member of steel having a top surface and a combustion bowl recessed in said top surface, wherein the combustion bowl has a final finish form that is produced by other than machining;preparing a lower crown member as a discrete component separate from the upper crown member;joining the upper and lower crown members together; andmachining at least a portion of said jointed upper and lower crown members other than said combustion bowl.2. The method of claim 1 , wherein the final finish form of the combustion bowl is produced by casting.3. The method of claim 1 , wherein at least a portion of the piston is produced by forging.4. The method of claim 3 , wherein at least portions of the forged piston are in the final finished form.5. The method of claim 1 , wherein the top surface has a final finish form produced by other than casting.6. The method of wherein the upper and lower crown members are joined by friction welding.7. The method of wherein the friction welded upper and lower crown members are formed with an annular oil gallery.8. The method of including forming the final finished form of the combustion bowl to have a complex shape lacking rotational symmetry.9. The method of wherein the complex shape is asymmetric in the circumferential direction of the combustion bowl.10. A method of making a piston comprising the ...

Method and machine tool for machining a rotationally asymmetrical region

In order to machine at least one workpiece on a lathe, where the workpiece rotates in the lathe and the at least one region to be machined of the workpiece is machined with the aid of at least one tool of the lathe, where the tool is moved at least parallel to the rotation axis of the workpiece, where the tool is moved parallel to the rotation axis of the workpiece such that the machined region of the workpiece is formed in a rotationally asymmetrical manner with respect to the rotation axis of the workpiece after machining. Furthermore, the invention disclosure relates to a cooling duct to a piston wall, and to a combustion-chamber hollow of a piston and also to a lathe.

METHOD FOR PRODUCING A GROOVE STRUCTURE IN AN INTERNAL SURFACE OF A PISTON

A method for producing a groove structure in an internal surface of a pin bore of a piston may include providing a rotatable boring bar with at least one cutting tool; advancing the boring bar while rotating at a first rotational speed in a direction of rotation with a first feed speed into the pin bore and introducing at least one helical first groove of the groove structure with a first depth and a first width into the internal surface; and retracting the boring bar, subsequent to introducing the at least one helical first groove, from the pin bore with a second feed speed while maintaining rotation at a second rotational speed in the direction of rotation; during the retracting of the boring bar at least one helical second groove is introduced into the internal surface. 1. A method for producing a groove structure in an internal surface of a pin bore of a piston , with the method steps comprising:providing a rotatable boring bar with at least one cutting tool;advancing the boring bar while rotating at a first rotational speed in a direction of rotation with a first feed speed into the pin bore and introducing at least one helical first groove of the groove structure with a first depth and a first width into the internal surface; andretracting the boring bar, subsequent to introducing the at least one helical first groove, from the pin bore with a second feed speed while maintaining rotation at a second rotational speed in the direction of rotation, wherein during the retracting of the boring bar at least one helical second groove of the groove structure with a second depth that is distinct from the first depth is formed into the internal surface.2. The method according to claim 1 , wherein the second feed speed at which the boring bar is retracted from the pin bore is distinct compared with the first feed speed.3. The method according to claim 1 , wherein when the boring bar is retracted the second depth of the at least one helical second groove of the groove ...

PISTON AND METHOD OF MAKING A PISTON

A one-piece piston including a combustion bowl which is cast to its final form and includes at least one irregularity spaced from a central axis. The piston is initially fabricated of an upper crown member and a lower crown member, which are joined together. The piston is then chucked into a machine tool, such as a CNC lathe, which locates either the piston's top surface or a portion of the combustion bowl and establishes its location as a datum plane. It is this datum plane which serves as a reference location for subsequent machining operations of the piston. 1. A method of making a piston comprising the steps of:preparing a single piece upper crown member of steel having a top surface and a combustion bowl recessed in said top surface, wherein the combustion bowl has a final finish form that is produced by other than machining;preparing a lower crown member as a discrete component separate from the upper crown member;joining the upper and lower crown members together; andmachining at least a portion of said jointed upper and lower crown members other than said combustion bowl.2. The method of claim wherein the final finish form of the combustion bowl is produced by casting.3. The method of claim 1 , wherein at least a portion of the piston is produced by forging.4. The method of claim 3 , wherein at least portions of the forged piston are in the final finished form.5. The method of claim 1 , wherein the top surface has a final finish form produced by other than casting.6. The method of wherein the upper and lower crown members are joined by friction welding.7. The method of wherein the friction welded upper and lower crown members are formed with an annular oil gallery.8. The method of including forming the final finished form of the combustion bowl to have a complex shape lacking rotational symmetry.9. The method of wherein the complex shape is asymmetric in the circumferential direction of the combustion bowl. This Divisional Application claims the benefit of U ...

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal catalyst compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds, and polymerization processes utilizing the transition metal compounds for the production of olefin polymers.

Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine

Provided is a hole drilling machine and the method for drilling an oval hole and an inner-diameter-changing hole by means of the hole drilling machine, the machine and the method being configured so that the oval hole can be shaped with high accuracy and drilling of a complicated hole such as the inner-diameter-changing hole can be performed with high accuracy. A hole drilling machine 100 includes a spindle 101 and an auxiliary spindle 120 holding both end portions of a processing tool 102 having a cutting blade 103. The spindle 101 includes a spindle drive motor 106 configured to rotatably displace the processing tool 102 on a circular path, and a tool turnable-drive motor 105 configured to spin the processing tool 102. The auxiliary spindle 120 includes an auxiliary spindle drive motor 120 b. In the auxiliary spindle drive motor 120 b, a tool fitting portion 120 a in which a tip end portion of the processing tool 102 is slidably fitted is synchronously rotatably driven on the same circular path as that for the spindle 101. A table reciprocatably-displacing mechanism 111 is provided between the spindle 101 and the auxiliary spindle 120. The table reciprocatably-displacing mechanism 111 reciprocatably displaces a work piece WK in an X-axis direction perpendicular to an axial direction of the spindle 101.

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal catalyst compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds, and polymerization processes utilizing the transition metal compounds for the production of olefin polymers.

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

公开了新颖桥连联芳香基酚配位体及由其衍生的过渡金属催化剂化合物。还公开了制备所述配位体及过渡金属化合物的方法，以及利用所述过渡金属化合物制造烯烃聚合物的聚合方法。

Bi-aromatic bridging ligands and olefin polymerization catalysts prepared therefrom

Un ligando de fenol bi-aromático con puente de fórmula (I);**Fórmula** en donde cada uno de R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 y R12 se selecciona independientemente del grupo que consiste en hidruro, haluro, hidrocarbilo opcionalmente sustituido, hidrocarbilo opcionalmente sustituido que contiene heteroátomos, alcoxi, ariloxi, sililo, borilo, dialquilamino, alquiltio, ariltio y seleno; opcionalmente dos o más grupos R pueden combinarse entre sí en estructuras anulares, teniendo tales estructuras anulares de 3 a 100 átomos no de hidrógeno en el anillo; A es un grupo formador de puente que tiene de uno a 50 átomos no de hidrógeno; Y y Y' se seleccionan independientemente de O, S, NRa y PRa, en donde Ra es hidrocarbilo opcionalmente sustituido; Ar es, independientemente, arilo opcionalmente sustituido o heteroarilo opcionalmente sustituido. A bridged bi-aromatic phenol ligand of formula (I); ** Formula ** wherein each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 is selected independently of the group consisting of hydride, halide, optionally substituted hydrocarbyl, optionally substituted hydrocarbyl containing heteroatoms, alkoxy, aryloxy, silyl, boryl, dialkylamino, alkylthio, arylthio and selene; optionally two or more R groups can be combined with each other into ring structures, such ring structures having from 3 to 100 non-hydrogen ring atoms; A is a bridging group having from one to 50 non-hydrogen atoms; Y and Y 'are independently selected from O, S, NRa and PRa, where Ra is optionally substituted hydrocarbyl; Ar is, independently, optionally substituted aryl or optionally substituted heteroaryl.

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal catalyst compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds, and polymerization processes utilizing the transition metal compounds for the production of olefin polymers.

Bridging biaryl perfume base ligand and olefin polymerization catalysis prepared therefrom

公开了新颖桥连联芳香基酚配位体及由其衍生的过渡金属催化剂化合物。还公开了制备所述配位体及过渡金属化合物的方法，以及利用所述过渡金属化合物制造烯烃聚合物的聚合方法。

Piston punching machine

本发明公开了一种活塞打孔机，包括支撑架，所述支撑架的上端固定有下端板，下端板的下端安装有间歇驱动装置，下端板的中部设有旋转台，下端板的上端固定有滑动架，滑动架上设有滑动板，滑动板上安装有一号电机，一号电机的轴上固定有驱动齿轮，驱动齿轮的外壁上均匀啮合有从动齿轮，从动齿轮内均固定有从动轴，从动轴的下端均固定有钻头，下端板的左、右两端均安装有气缸。本发明结构设计简单、使用方便等优点，实现了多个活塞的同时加工，降低了生产时间，节约了生产成本，同时利用间歇驱动装置对活塞进行驱动，有效的提高了活塞生产效率，节省了人力物力。

Piston and the method manufacturing piston

本发明提供一种一件式活塞（20），其包括被铸造成成品形状并且包括至少一个不规则结构的燃烧碗（26），该不规则结构与中心轴（A）间隔开。活塞（20）首先由连接在一起的上冠部元件（22）和下冠部元件（24）制成。然后活塞（20）被夹持到例如数控车床的机械加工工具（54）中，该机械加工工具定位活塞的顶表面（32）或者燃烧碗（26）的一部分并且将其位置设置为基准平面。该基准平面在活塞（20）的后续机械加工操作中被用作参考位置。

TURNING TOOL, METHOD FOR MANUFACTURING PISTON AND PISTON

Un outil de tournage comprend une partie de montage (21) attachée à une machine de tournage et s’étendant de manière à croiser la direction axiale d'un piston et une partie formant bord de coupe (23) prévue en une extrémité distale de la partie de montage (21). L'extrémité distale de la partie formant bord de coupe (23) comprend une partie formant bord de coupe en forme d’arc (24) qui usine une partie formant rainure concave d'une partie de jupe du piston, et une partie formant bord de coupe linéaire (25) qui est située entre une partie formant rainure concave et une partie formant rainure concave et usine une section de plateau. La partie formant bord de coupe en forme d'arc (24) et la partie formant bord de coupe linéaire 25 sont disposées côte à côte parallèlement à la direction axiale. Figure de l’abrégé : Figure 4 A turning tool comprises a mounting part (21) attached to a turning machine and extending so as to cross the axial direction of a piston and a cutting edge part (23) provided at a distal end of the mounting part (21). The distal end of the cutting edge portion (23) includes an arcuate cutting edge portion (24) which machines a concave groove portion of a skirt portion of the piston, and an edge portion of linear cut (25) which is located between a part forming a concave groove and a part forming a concave groove and machining a plate section. The arcuate cutting edge portion (24) and the linear cutting edge portion 25 are arranged side by side parallel to the axial direction. Figure of the abstract: Figure 4

Processing method for diesel oil engine piston rod deep hole

一种用于柴油机活塞杆深孔的加工方法，包括：粗钻内孔、精扩内孔、底部圆弧粗加工、底部圆弧精加工和检测，在对所述深孔的钻削过程中，采用工件作旋转运动、刀具做反方向的旋转运动和进给运动的方式；所述刀具采用特制的系列喷吸钻，其形成的负压使切屑能够容易排出而不用退刀排屑，同时通过刀体上的导向块支撑住刀具，以平衡钻削时的切削力。本发明提高了深孔的直线度，解决了深孔底部圆弧与深孔接刀大的问题，达到了产品质量稳定、切削效率高的效果，适用于大型柴油机用活塞杆的深孔加工，尤其能够高效地完成孔深超过孔径30倍且底部有大圆弧的深孔加工。

Method for processing convex variable elliptic curve

本发明涉及一种中凸变椭圆曲线加工方法，其解决了现有中凸变椭圆曲线加工过程程序编制复杂，编制时间长，纠错时调整麻烦的技术问题，其包括以下步骤：通过获取加工对象，建立加工主程序；建立椭圆型线截面数据；利用机床凸轮数据模板导入椭圆型线截面加工数据；建立机床通道2加工椭圆型线程序；导入机床通道1加工主程序和机床通道2加工椭圆型线程序；进行首件试切加工；采用椭圆型线截面圆度仪检测加工件。本发明广泛应用于活塞加工。

Machining process for trapezoid rings with small axial dimensions, used in pistons of internal combustion engines

本发明涉及一种用于制造用于内燃机的活塞(1)的方法，该活塞具有环绕的梯形的环槽(2)，该环槽用于容纳轴向小尺寸的梯形环，该环槽具有槽底(5)连同连接在该槽底上的面(6、7)和槽侧面(3、4)，根据本发明，在第一方法步骤中，通过利用刀具(15)的加工来构成槽底(5)连同连接在该槽底上的面(6、7)，并且在另外的方法步骤中构成槽侧面(3、4)。此外还要求保护一种根据上述的方法制成的活塞(1)以及一种刀具(15)。

Taper angle control device for piston taper pin boring apparatus

내용 없음. No content.

Machining process for trapezoid rings with small axial dimensions, used in pistons of internal combustion engines

A method for producing a piston for internal combustion engines, where the piston includes a circumferential trapezoid annular groove for receiving trapezoid rings with small axial dimensions the groove having a groove base with adjoining surfaces and groove flanks. The groove base with adjoining surfaces is created in a first method step by machining using a cutting steel tool and the groove flanks are created in a further method step. Also disclosed are a piston produced according to the method and a cutting steel tool.

Taper angle adjustment device in the taper pin hole machine of piston

Method for the production of a single part piston and a piston produced by such a method

本发明涉及一种方法，用于由活塞坯件(10)制造出用于内燃机的一体式活塞(20)，所述活塞具有：在活塞顶(11)中环形延伸且向下开放的冷却通道(15)；以及在活塞顶(11)和活塞裙(13)之间形成的环形凹槽(16)，其中活塞顶(11)和活塞裙(13)借助于环形的活塞销座(16)相互连接，并且环形凹槽(16)和冷却通道(15)通过切削加工添置在活塞坯件(10)中。根据本发明而设计，为了切削加工冷却通道(15)，刀具(17)在旋转的活塞中以拱形摆动(A)通过凹槽(16)移动到冷却通道(15)的区域中并且加工冷却通道(15)。

Verfahren und werkzeugmaschine zur spanenden bearbeitung eines rotationsasymmetrischen bereichs

Zur spanenden Bearbeitung von zumindest einem Werkstück (1) auf einer Drehmaschine, wobei das Werkstück (1) in der Drehmaschine rotiert und der zumindest eine zu bearbeitende Bereich des Werkstücks (1) mit Hilfe zumindest eines Werkzeugs (3) der Drehmaschine bearbeitet wird, wobei das Werkzeug (3) zumindest parallel zur Drehachse (2) des Werkstücks (1) bewegt wird, wird gemäß der Erfindung das Werkzeug (3) parallel zur Drehachse (2) des Werkstücks (1) so bewegt, dass der bearbeitete Bereich des Werkstücks (1) rotationsasymmetrisch bezogen auf die Drehachse (2) des Werkstücks (1) nach der Bearbeitung ausgebildet ist. Ferner betrifft die Erfindung einen Kühlkanal (7), eine Kolbenwand (13) und eine Brennraummulde (9) eines Kolbens (6) sowie eine Drehmaschine.

Outil de tournage, procede de fabrication de piston et piston

Un outil de tournage comprend une partie de montage (21) attachée à une machine de tournage et s’étendant de manière à croiser la direction axiale d'un piston et une partie formant bord de coupe (23) prévue en une extrémité distale de la partie de montage (21). L'extrémité distale de la partie formant bord de coupe (23) comprend une partie formant bord de coupe en forme d’arc (24) qui usine une partie formant rainure concave d'une partie de jupe du piston, et une partie formant bord de coupe linéaire (25) qui est située entre une partie formant rainure concave et une partie formant rainure concave et usine une section de plateau. La partie formant bord de coupe en forme d'arc (24) et la partie formant bord de coupe linéaire 25 sont disposées côte à côte parallèlement à la direction axiale. Figure de l’abrégé : Figure 4

Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

Disclosed are novel bridged bi-aromatic phenol ligands and transition metal catalyst compounds derived therefrom. Also disclosed are methods of making the ligands and transition metal compounds, and polymerization processes utilizing the transition metal compounds for the production of olefin polymers.

一种采用c6140a车床进行活塞环槽等级修理加工的方法

本发明的采用C6140A车床进行活塞环槽等级修理加工的方法，属于普通车床加工活塞环槽的方法。活塞环槽等级修理只有生产厂家能够完成，对工矿企业是个未知领域。本发明的目的是通过活塞环槽磨损后的尺寸，确定活塞环槽等级修理的级别，再选择对应等级的活塞环，用以确定活塞环槽等级修理的加工尺寸，提出一种采用C6140A车床进行活塞环槽等级修理加工的方法。本发明通过制作C6140A车床专用安装活塞的胎具，选择车刀，选择合理的加工车削要素，运用C6140A车床完成活塞环槽等级修理。

一种自动化程度高的加工汽车活塞的装置

本发明公开了一种自动化程度高的加工汽车活塞的装置，它包括控制器、减速箱（1）、步进电机（2）和工作台（3），步进电机（2）和减速箱（1）均固定安装在工作台（3）上，减速箱（1）的输出轴连接有三爪卡盘（4），工作台（3）上设置有垂直于工作台（3）的立柱（5），立柱（5）上设置有垂直于工作台（3）的油缸（6），油缸（6）活塞杆的作用端设置有伺服电机（7），伺服电机（7）的输出端设置有垂直于工作台（3）的钻头（8），钻头（8）朝向工作台（3）设置且钻头（8）位于三爪卡盘（4）的上方。本发明的有益效果是：活塞上油孔加工精度高、节省工人劳动量、生产效率高、自动化程度高。

선반에 있어서 피스턴 핀구멍의 테이퍼 가공장치

一种汽车空调压缩机活塞打孔设备

本发明提供了一种汽车空调压缩机活塞打孔设备，其包括机台，机台中心设有放置活塞的活塞定位工装，所述定位工装的两侧设有对称的动力头，所述动力头与电机连接，所述动力头上安装钻孔刀具，两个钻孔刀具与活塞的两端中心相配合，活塞上设有压板，所述压板通过安装于机台上的气缸控制作上下运动，所述机台上还设有用于夹取活塞的机械手。本发明保证了活塞车外圆加工的同轴度，提高了生产效率。

一种基于活塞的活塞孔加工装置

本发明涉及机床技术领域，具体公开了一种基于活塞的活塞孔加工装置，工作台具有集液腔体；工作台包括安装台，安装台具有用于安装活塞的安装槽，安装槽内设有用于固定活塞的安装夹具和安装座；工作台围绕安装台设有喷液环，喷液环可相对于安装台转动，喷液环的底部设有用于储存冷却液的储液箱，喷液环具有与储液箱相连通的连通腔体，喷液环上设有多个喷头，喷头的方向由喷液环往安装台的中轴线向上倾斜，第一驱动件与喷液环传动连接，第一驱动件用于驱动喷液环转动，喷液环转动时，喷头向安装台喷出的冷却液呈圆锥形。该基于活塞的活塞孔加工装置能够有效减少碎屑飞溅现象的发生，避免碎屑温度过高对设备和人体造成损害。

압축기용 피스톤의 가공방법

본 발명은 차량공조장치에 사용되는 압축기용 피스톤의 가공방법에 관한 것으로서, 더욱 상세히는 상기 피스톤의 헤더 내측에 슈를 결합하기 위한 요입형의 수용자리부를 보다 확실하고 신속하게 가공하기 위한 압축기용 피스톤의 가공방법을 제공코자 하는 것이다. 즉, 본 발명에서 제공하는 압축기용 피스톤 가공방법은 상기 피스톤(1)의 수용자리부(8) 중심을 통과하는 피스톤(1)의 축선(L1)과 툴(14)의 축선(L2)을 중심점으로 하여 CAM 프로그램에 의해 2차원 회전운동하는 선반(10)상의 심압대(11)에 고정된 척(12)상에 피스톤(1)을 고정하여 소정속도로 좌우왕복운동 및 피스톤(1)의 수용자리부(8) 반경에 부합되게 중심이동되는 툴(14)의 칼날부(14a)에 의해 상기 수용자리부(8)를 절삭가공토록 함으로서 신속한 수용자리부(8)의 절삭가공과 함께 확실한 진원도를 갖는 수용자리부(8)를 가공할 수 있게 되어 작업능률의 극대화 및 제품의 불량률을 현격히 감소시킬 수 있는 것이다.

Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine

Provided is a hole drilling machine and the method for drilling an oval hole and an inner-diameter-changing hole by means of the hole drilling machine, the machine and the method being configured so that the oval hole can be shaped with high accuracy and drilling of a complicated hole such as the inner-diameter-changing hole can be performed with high accuracy. A hole drilling machine 100 includes a spindle 101 and an auxiliary spindle 120 holding both end portions of a processing tool 102 having a cutting blade 103. The spindle 101 includes a spindle drive motor 106 configured to rotatably displace the processing tool 102 on a circular path, and a tool turnable-drive motor 105 configured to spin the processing tool 102. The auxiliary spindle 120 includes an auxiliary spindle drive motor 120 b. In the auxiliary spindle drive motor 120 b, a tool fitting portion 120 a in which a tip end portion of the processing tool 102 is slidably fitted is synchronously rotatably driven on the same circular path as that for the spindle 101. A table reciprocatably-displacing mechanism 111 is provided between the spindle 101 and the auxiliary spindle 120. The table reciprocatably-displacing mechanism 111 reciprocatably displaces a work piece WK in an X-axis direction perpendicular to an axial direction of the spindle 101.

피스톤 핀 구멍을 형성하는 방법 및 피스톤 핀 구멍 천공 시스템

피스톤 핀 구멍 천공 시스템 및 피스톤 핀 구멍 천공 시스템으로 피스톤 핀 구멍을 형성하는 방법은 슬라이드 부재에 의해 지지된 고정부에 피스톤을 고정시키는 것을 포함한다. 그 다음에, 절삭 부재를 제1 축을 중심으로 회전시키고 상기 고정부와 함께 슬라이드 부재를 제1 축을 따라서 절삭 부재쪽으로 이동시키고 피스톤을 절삭 부재와 절삭되도록 접촉시킨다. 또한, 상기 고정부를 상기 제1 축을 가로질러서 각각 뻗어 있는 제2 축 및 제3 축을 따라서 이동시키고, 절삭 부재로 피스톤에 원하는 핀 구멍 형상을 기계가공한다.

pistão

resumo patente de invenção: "pistão". a presente invenção refere-se a um pistão (1) para um motor de combustão interna com furos de pino para recepção de um pino de pistão, sendo que os furos de pino (2) estão formados de modo transversalmente oval ao eixo longitudinal do pistão (1). é essencial para a invenção que os furos de pino (2) em ?=0? (zênite) e em ?=180? (nadir) estejam formados cilindricamente com base circular e em ?=90 e ?=270? (equador), de modo oval, com um volume de retenção de óleo, sendo que uma transição entre o equador e o zênite ou entre o equador e o nadir estende-se continuamente e de modo diferenciável, isto é, sem cantos. desse modo, pode ser produzido um pistão (1) de modo eficiente em custos, com boa capacidade de carga e bem lubrificado.

압축기의 피스톤 헤드 가공용 인덱스 척

본 발명은 압축기의 피스톤 헤드 가공용 인덱스 척에 관한 것으로, 좀더 상세히, 중심축(C)의 회전에 회전되는 인덱스몸체와, 피스톤(1)을 지지하는 지지대(11)가 구비된 받침수단(10)과, 인덱스몸체에 회전가능하게 지지되고 상기 받침수단(10)을 180 ° 회전시키는 회전수단(20)과, 인덱스몸체에 내부에 구비되고 상기 회전수단(20)에 동력을 제공하는 제1동력부(30)와, 피스톤(1)의 연결부(3) 상면을 가압하는 가압수단(40)과, 인덱스몸체에 슬라이딩 가능하게 지지되고 상기 가압수단(30)을 회전가능하게 고정하며 상기 가압수단(40)을 승강시키는 승강수단(50)과, 인덱스몸체에 내부에 구비되고 상기 승강수단(50)에 동력을 제공하는 제2동력부(60)를 포함하여 구성되는 압축기용 피스톤 헤드 가공용 인덱스 척에 있어서, 상기 가압수단(40)은 가압수단몸체(40a)로부터 하향 돌출된 가압대(42)와, 가압대(42) 하면으로부터 돌출되는 가압용 돌출부(42a)를 포함하여 구성되는 것을 특징으로 하는 압축기의 피스톤 헤드 가공용 인덱스 척에 관한 것이다. 인덱스척, 피스톤, 클램프, 가압수단, 받침수단

孔加工机及使用孔加工机的椭圆孔及内径变化孔的加工方法

本发明提供一种孔加工机，能够高精度地成形椭圆孔并能够高精度地进行如内径变化孔般的复杂孔加工，以及使用孔加工机的椭圆孔及内径变化孔的加工方法。孔加工机100具备保持具有切割刃103的加工工具102的两端部的主轴101以及辅助主轴120。主轴101具备使加工工具102于圆轨道上旋转位移的主轴驱动马达106、及使加工工具102自转的工具转动马达105。辅助主轴120具备辅助主轴驱动马达120b，其使加工工具102的前端部可自由滑动地嵌合的工具嵌合部120a在与主轴101相同的圆轨道上同步旋转驱动。于主轴101与辅助主轴120之间设置桌台来回位移机构111，其使被加工物WK在与主轴101的轴方向正交的X轴方向来回位移。

孔加工机及使用孔加工机的椭圆孔及内径变化孔的加工方法

本发明提供一种孔加工机，能够高精度地成形椭圆孔并能够高精度地进行如内径变化孔般的复杂孔加工，以及使用孔加工机的椭圆孔及内径变化孔的加工方法。孔加工机100具备保持具有切割刃103的加工工具102的两端部的主轴101以及辅助主轴120。主轴101具备使加工工具102于圆轨道上旋转位移的主轴驱动马达106、及使加工工具102自转的工具转动马达105。辅助主轴120具备辅助主轴驱动马达120b，其使加工工具102的前端部可自由滑动地嵌合的工具嵌合部120a在与主轴101相同的圆轨道上同步旋转驱动。于主轴101与辅助主轴120之间设置桌台来回位移机构111，其使被加工物WK在与主轴101的轴方向正交的X轴方向来回位移。

複雑な形状の燃焼ボウルおよび冷却ギャラリを有するピストンならびにその構成方法

ピストンおよびその構成方法が提供される。ピストンは、直径方向に対向するスカート部分を有する下部部材と、軸方向に整列されたピンボアと、下部部材に接合される上部部材とを有する。上部部材は、実質的に平坦な上部燃焼面と、上部燃焼部材から垂下する燃焼ボウルを有する。下方クラウン表面は燃焼ボウルと反対方向に直接形成され、燃焼ボウル縁は燃焼ボウルを上部燃焼面に遷移する。燃焼ボウル、下方クラウン表面および上部燃焼面の少なくとも１つは、加工表面と鍛造時のままの表面とを有する。

Method of forming piston pin holes and boring system therefor

A piston pin hole boring system and method of forming pin holes therewith includes fixing a piston to a fixture supported by a slide member. Then, rotating a cutting member about a first axis and moving the slide member with the fixture thereon toward the cutting member along the first axis and bringing the piston into cutting contact with the cutting member. Further, moving the fixture along second and third axes, each extending transversely to the first axis and machining the desired pin hole contours in the piston with the cutting member.

Method of forming piston pin holes and boring system therefor

一种基于活塞的活塞孔加工装置

本发明涉及机床技术领域，具体公开了一种基于活塞的活塞孔加工装置，工作台具有集液腔体；工作台包括安装台，安装台具有用于安装活塞的安装槽，安装槽内设有用于固定活塞的安装夹具和安装座；工作台围绕安装台设有喷液环，喷液环可相对于安装台转动，喷液环的底部设有用于储存冷却液的储液箱，喷液环具有与储液箱相连通的连通腔体，喷液环上设有多个喷头，喷头的方向由喷液环往安装台的中轴线向上倾斜，第一驱动件与喷液环传动连接，第一驱动件用于驱动喷液环转动，喷液环转动时，喷头向安装台喷出的冷却液呈圆锥形。该基于活塞的活塞孔加工装置能够有效减少碎屑飞溅现象的发生，避免碎屑温度过高对设备和人体造成损害。

孔加工机及使用孔加工机的椭圆孔及内径变化孔的加工方法

本发明提供一种孔加工机，能够高精度地成形椭圆孔并能够高精度地进行如内径变化孔般的复杂孔加工，以及使用孔加工机的椭圆孔及内径变化孔的加工方法。孔加工机100具备保持具有切割刃103的加工工具102的两端部的主轴101以及辅助主轴120。主轴101具备使加工工具102于圆轨道上旋转位移的主轴驱动马达106、及使加工工具102自转的工具转动马达105。辅助主轴120具备辅助主轴驱动马达120b，其使加工工具102的前端部可自由滑动地嵌合的工具嵌合部120a在与主轴101相同的圆轨道上同步旋转驱动。于主轴101与辅助主轴120之间设置桌台来回位移机构111，其使被加工物WK在与主轴101的轴方向正交的X轴方向来回位移。

孔加工机及使用孔加工机的椭圆孔及内径变化孔的加工方法

本发明提供一种孔加工机，能够高精度地成形椭圆孔并能够高精度地进行如内径变化孔般的复杂孔加工，以及使用孔加工机的椭圆孔及内径变化孔的加工方法。孔加工机100具备保持具有切割刃103的加工工具102的两端部的主轴101以及辅助主轴120。主轴101具备使加工工具102于圆轨道上旋转位移的主轴驱动马达106、及使加工工具102自转的工具转动马达105。辅助主轴120具备辅助主轴驱动马达120b，其使加工工具102的前端部可自由滑动地嵌合的工具嵌合部120a在与主轴101相同的圆轨道上同步旋转驱动。于主轴101与辅助主轴120之间设置桌台来回位移机构111，其使被加工物WK在与主轴101的轴方向正交的X轴方向来回位移。

一种模锻活塞双面钻孔夹具及其双面钻孔工艺方法

本发明涉及一种模锻活塞双面钻孔夹具及其双面钻孔工艺方法，与现有技术相比解决了模锻活塞双面钻孔作业效率低、精度差的缺陷。本发明包括模锻活塞、夹具底座组件、上抵压组件和下顶胀组件，上抵压组件安装在夹具底座组件上且位于模锻活塞的上方，定位底座安装在夹具底座组件上方，所述定位底座的上表面形状与模锻活塞内表面形状相同，模锻活塞套在定位底座上。本发明实现了模锻活塞两后裙面两侧同时钻孔加工，并可快速装夹、自动定位夹紧，大大降低了钻模与工件的装配技术难度并提高了对位准确性。