Holding Body for Flexible Grinding Means, and Grinding System

A holding body includes a fastening layer which has a fastening surface configured to fasten a flexible grinding device. The fastening layer includes an air- and dust-permeable material and is substantially full-surface. The fastening layer includes a textile material. The holding body also includes a supporting body which has a supporting surface configured to support a holding surface of the fastening layer. The supporting body is air- and dust-permeable and includes an open-cell foam. A grinding system includes such a holding body and such a flexible grinding device. 1. A holding body for a flexible grinding device comprising:a fastening layer having a fastening surface configured to fasten a flexible grinding device; and the holding surface is located opposite from the fastening surface;', 'the supporting body includes an air- and dust-permeable material; and, 'a supporting body having a supporting surface that is connected so as to support a holding surface of the fastening layer, whereinthe fastening layer includes an air- and dust-permeable material.2. The holding body as claimed in claim 1 , wherein the fastening surface is substantially full-surfaced.3. The holding body as claimed in claim 1 , wherein the fastening surface has a mechanical fastening configured to fasten a flexible grinding device claim 1 , the mechanical fastening including at least one of loops and hooks protruding from the fastening surface.4. The holding body as claimed in claim 1 , wherein the fastening layer includes a textile material having at least one of loops claim 1 , hooks claim 1 , and stud heads.5. The holding body as claimed in claim 1 , wherein the supporting surface is connected so as to support the holding surface substantially over all of the supporting surface.6. The holding body as claimed in claim 1 , wherein the supporting body includes an open-cell foam material claim 1 , a knitted spacer fabric or a honeycomb structure.7. The holding body as claimed in claim 1 , ...

PROFILED PLANE ABRADING TOOL FOR TIRE REPAIRS

The present invention includes methods and apparatus for controlling the abrasion of a tire surface. Particular embodiments provide an abrading tool for abrading a surface of a tire, the tool comprising means for rotating an abrading wheel, an abrading wheel rotatably attached to the means for rotating, and a depth guide secured to the means for rotating, wherein the depth guide includes a pair of freely rotatable, spaced apart guide wheels. Further embodiments include a depth guide configured for use with an abrading tool which includes a abrading wheel and a means for rotating the abrading wheel, the depth guide comprising a mounting member securable to the means for rotating and a pair of freely rotatable, spaced apart guide wheels rotatably attached to the mounting member. Particular embodiments further include a method for preparing a portion of a tire for repair. 1. An abrading tool for grinding a surface of a tire , the tool comprising:means for rotating an abrading wheel;the abrading wheel rotatably attached to the means for rotating; anda depth guide secured to the means for rotating, the depth guide including a pair of rotatable guide wheels rotatably attached to the depth guide, the pair of guide wheels being spaced apart along a common rotational axis such that the abrading wheel is arranged between the pair of guide wheels, where the abrading wheel is configured to extend a distance beyond the diameter of the guide wheels corresponding to a desired grinding depth.2. The abrading tool of claim 1 , wherein the guide wheels are selectively positionable relative to the abrading wheel.3. The abrading tool of claim 2 , wherein the depth guide further includes a mounting bracket secured to the means for rotating and a guide wheel bracket secured to the mounting bracket claim 2 , where the pair of guide wheels are rotatably attached to the guide wheel bracket and the guide wheel bracket is selectively positionable relative to the mounting bracket to achieve a ...

SANDPAPER REPLACEMENT DEVICE

A sandpaper replacement device is used for replacing sandpaper of a polishing device, including a support platform, a driver, a driving detector sensor, a clamping member, a clamping detector and a controller. The driver includes a cylinder body and an extension rod movably positioned on the cylinder body. The cylinder body is positioned on the support platform, and the extension rod passing through and protruding out from the support platform. The driving detector sensor is positioned on the support platform adjacent to the extension rod. The clamping member includes a main body and two claws positioned oppositely to each other on the main body. The main body is mounted on the support platform away from the cylinder body. The clamping detector is positioned adjacent to the two claws. The controller is electrically connected to the driver, the driving detector sensor, the clamping detector and the clamping member. 1. A sandpaper replacement device used for replacing sandpapers for a polish device , comprising:a support platform;a driver comprising a cylinder body and an extension rod movably positioned on the cylinder body, the cylinder body being positioned on the support platform, and the extension rod passing through and protruding out from the support platform;a driving detector sensor positioned on the support platform adjacent to the extension rod;a clamping member comprising a main body and two claws oppositely positioned on one end of the main body, and the main body being mounted on the support platform away from the cylinder body;a clamping detector positioned adjacent to the two claws; anda controller electrically connected to the driver, the driving detector sensor, the clamping detector and the clamping member, wherein when the clamping detector detects sandpaper needing to be replaced having arrived at a first preset position, the clamping detector sends a first signal to the controller, the controller controls the clamping member to grip and tear off ...

Sanding device

A sanding device for performing sanding operations comprising a core carrying a plurality of bristles and a plurality of pieces of abrasive cloth, wherein within said core is a material comprising a filler material and a binding material.

SURFACE TREATING APPARATUS AND METHOD

A back-up apparatus for use with a surface treating apparatus can include a back-up plate having a pad attachment face and a back-up pad having a first pad face and a second pad face. The back-up apparatus can also include a porous interface layer. The interface layer can include an outer face. The back-up apparatus can also include a layer of a first adhesive on the outer face and extending into the interface layer, and a layer of a second adhesive provided on the layer of the first adhesive. The second adhesive can be selected to releasably adhesively bond to an abrasive sheet. The first and second adhesives can be selected such that the adhesive bond between the first adhesive and the second adhesive is stronger than the adhesive bond between the second adhesive and the abrasive sheet. 1. A back-up apparatus for use with a surface treating apparatus , the back-up apparatus comprising:a) a back-up plate having a pad attachment face;b) a back-up pad, the back-up pad having a first pad face, secured to the pad attachment face, and an opposed second pad face;c) an porous interface layer, the interface layer comprising an inner face, secured to the second pad face, and an outer face;d) a layer of a first adhesive provided on the outer face and extending into the interface layer; ande) a layer of a second adhesive provided on the layer of the first adhesive wherein the second adhesive is selected to releasably adhesively bond to an abrasive sheet, and wherein the first and second adhesives are selected such that the adhesive bond between the first adhesive and the second adhesive is stronger than the adhesive bond between the second adhesive and the abrasive sheet whereby the layer of second adhesive remains bonded to the layer of first adhesive when the abrasive sheet is separated from the back-up apparatus.2. The back-up apparatus of claim 1 , wherein the back-up pad is resiliently flexible and the interface layer is flexible whereby the back-up pad flexes to follow ...

SANDING DEVICE

A sanding device comprising a core and with a surface having a plurality of bristles and pieces of abrasive cloth secured to it. According to the invention said pieces of abrasive cloth being secured to said surface by use of fastening elements extending through said abrasive cloth and into said core. 1. A sanding device for performing sanding operations , said sanding device comprising:a core having a surface;a plurality of bristles being secured to said core and extending from said surface;a plurality of pieces of abrasive cloth extending from said surface;characterized in said pieces of abrasive cloth being secured to said surface by use of fastening elements extending through said abrasive cloth and into said core.2. A sanding device according to claim 1 , wherein said fastening elements are staples.3. A sanding device according to claim 1 , wherein reinforcement strips are arranged on top of said pieces of abrasive cloth claim 1 , and said staples extend through said reinforcement strip and said abrasive cloth and into said core.4. A sanding device according to claim 1 , wherein said pieces of abrasive cloth are secured to said surface by use of glue.5. A sanding device according to claim 1 , wherein said pieces of abrasive cloth are glued to said bristles.6. A sanding device according to claim 1 , comprising different pieces of abrasive cloth with different grit sizes.7. A sanding device according to claim 1 , wherein a piece of abrasive paper comprises a sandwich of two or more layers of abrasive paper.8. A sanding device according to claim 1 , wherein several layers of bristles are provided behind a piece of abrasive paper.9. A sanding device according to claim 1 , wherein said core is made of a material comprising a filler material and a binding material.10. A sanding device according to claim 8 , wherein said filler material comprises a recycled material11. A sanding device according to claim 8 , wherein said filler material comprises paper.12. A sanding ...

Interchangeable Polishing and Buffing Device

The disclosed polishing devices include an adaptor including a conical body including a first body end and a second body end, wherein a diameter of the second body end is greater than a diameter of the first body end. The adaptor also includes a drill bit including a shank configured to engage with a chuck of an electrical drill, wherein the drill bit extends from the second body end of the conical body. The polishing device also includes a first polishing pad surrounding an outer surface of the conical body. The first polishing pad includes an outer surface of the first polishing pad and an inner surface of the first polishing pad, wherein the inner surface of the first polishing pad is in contact with an outer surface of the conical body of the adaptor. The first polishing pad also includes an elastic strap extending from one portion of the second body end to another portion of the second body end. The second body end of the conical body includes at least one channel for receiving the elastic strap of the first polishing pad such that the polishing pad remains secure on the conical body. 1. A polishing device comprising: a conical body including a first body end and a second body end, wherein a diameter of the second body end is greater than a diameter of the first body end; and', 'a drill bit including a shank configured to engage with a chuck of an electrical drill, wherein the drill bit extends from the second body end of the conical body; and, 'an adaptor including an outer surface of the first polishing pad and an inner surface of the first polishing pad, wherein the inner surface of the first polishing pad is in contact with an outer surface of the conical body of the adaptor; and', 'an elastic strap extending from one portion of the second body end to another portion of the second body end,, 'a first polishing pad surrounding an outer surface of the conical body, wherein the first polishing pad includeswherein the second body end of the conical body ...

RELEASABLE TOOL ATTACHMENT MEANS FOR POWER TROWELS

A tool driver for a power trowel, the tool driver comprising a combination of a magnetic fastening arrangement and a friction based fastening arrangement for releasably holding an abrasive tool to the tool driver, wherein the magnetic fastening arrangement is configured symmetrically around a rotational center of the tool driver, wherein the friction based fastening arrangement is adapted to provide increased shear strength during abrasive operation of the tool, and wherein the magnetic fastening arrangement is adapted to provide increased pull strength during lifting of the tool driver. 1. A tool driver for a power trowel , the tool driver comprising a combination of a magnetic fastening arrangement and a friction based fastening arrangement for releasably holding an abrasive tool to the tool driver , wherein the magnetic fastening arrangement is configured symmetrically around a rotational center of the tool driver , wherein the friction based fastening arrangement is adapted to provide increased shear strength during abrasive operation of the tool , and wherein the magnetic fastening arrangement is adapted to provide increased pull strength during lifting of the tool driver.2. The tool driver according to claim 1 , wherein the friction based fastening arrangement comprises a tool driver surface with protrusions configured to engage with a yielding surface material on the abrasive tool to provide the increased shear strength.3. The tool driver according to claim 1 , wherein the friction based fastening arrangement comprises a material with hooks for holding respective loops on the abrasive tool or wherein the friction based fastening arrangement comprises a material with loops for holding respective hooks on the abrasive tool.4. The tool driver according to claim 2 , wherein the yielding surface material or the material with loops is a felt-like cloth claim 2 , a fibrous material claim 2 , a foam claim 2 , rubber claim 2 , and/or a non-synthetic material.5. The ...

GRINDING PACKAGE FITTED ON ROBOTIC ARM

A grinding package fitted on robotic arm includes a main body, a pneumatic motor, a bridging part and a grinding tool. The main body is formed with a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall within the first space, an intake channel, an exhaust channel, openings of the first space and the second space respectively located on each of two parallel sides of the main body, the connecting wall having a ventilation hole. The pneumatic motor includes a motor body within the first space, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole. The bridging part is combined with the main body and the robotic arm, the bridging part closing off the first space, the grinding tool facing the second space and being joined to the transmission shaft. 1. A grinding package fitted on a robotic arm , comprising:a main body forming a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall being provided within the first space and separating the first space into an intake region and a working region, an intake channel communicated to the intake region, an exhaust channel communicated to the working region, openings of the first space and the second space being respectively located on each of two parallel sides of the main body, the main body provided with a bearing mounting groove which is located within the second space and corresponding to the communicating hole, and the connecting wall being provided with a ventilation hole communicating the intake region to the working region;a pneumatic motor including a motor body provided within the working region, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole;a first bearing located in the bearing mounting groove and provided for the transmission shaft to pass through;a ...

METHOD AND APPARATUS FOR DEBURRING A SURFACE

A method and apparatus for deburring a metallic surface is disclosed. The method and apparatus utilizes a handheld orbital sander that is compact so that machine marks disposed in tight places can be reached. Additionally, a conformable sanding pad is utilized to allow the sanding pad to conform to the unique contours of the metallic surface to eliminate the machining marks. 1. A sanding attachment attachable to an orbital sander for deburring machine marks on a metallic surface , the attachment comprising:a sanding disc having a circular configuration defining a periphery, the disc having a rough side and a mounting side, the rough side being substantially flat, the mounting side having a threaded nub;a pad having a flexible support for the sanding disc, a rigid base removably attachable to the sanding disc, a threaded shank removably attachable to a chuck of the orbital sander, the base having a flat area adjacent to the threaded shank that contacts the chuck of the orbital sander to provide additional support during orbital rotation of the chuck.2. The attachment of wherein an outer peripheral portion of the flexible support is more bendable compared to the rigid base.3. The attachment of wherein the outer peripheral portion of the flexible support is sufficiently bendable so that the sanding disc is capable of deburring an inside corner having a ¼ inch radius.4. The attachment of wherein a central portion of the support has a threaded hole for receiving the threaded nub of the sanding disc.5. The attachment of wherein the flat area of the base contacts a face of the chuck of the orbital sander.6. A deburring kit for deburring machine marks on a metallic surface claim 1 , the kit comprising:a mini orbital sander holdable with one hand, the sander having an orbital attachment, the orbital attachment having an inner member that rotates with respect to an outer member, the outer member being retained within a housing, the inner member having a flat face for ...

Abrasive Articles with Removable Abrasive Member and Methods of Separating and Replacing Thereof

The present disclosure relates to abrasive articles including an abrasive member having opposing major surfaces, a working surface and an exterior attachment surface, wherein the abrasive member comprises an inorganic material having a Mohs hardness greater than about 7.0; and a magnetic member, having opposing first and second major surfaces and a corresponding magnetic force, wherein the first major surface of the magnetic member faces the exterior attachment surface. The abrasive articles of the present disclosure may include a third member. The third member is attached to the magnetic member by a magnetic force. The abrasive member with attached magnetic member is designed to be easily removed from the third member. Methods of separating an abrasive member from an abrasive article and replacing the abrasive member of an abrasive article are also provided. 1. An abrasive article comprising:an abrasive member having a working surface and an exterior attachment surface disposed opposite the working surface, wherein the abrasive member comprises a matrix material and an inorganic material having a Mohs hardness greater than about 7.0; anda magnetic member having opposing first and second major surfaces;wherein the first major surface of the magnetic member faces the exterior attachment surface; andwherein the region of the abrasive article between the working surface of the abrasive member and first major surface of the magnetic member is free of a coupling structure that couples the abrasive member to the magnetic member by a magnetic force.2. The abrasive article of claim 1 , wherein the inorganic material comprises abrasive particles that are at least partially contained in a portion of the matrix material that is proximate the working surface.3. The abrasive article of claim 1 , wherein the inorganic material comprises an inorganic coating disposed on at least a portion of the matrix material that is proximate to the working surface.4. The abrasive article of ...

DEVICE FOR AUTOMATICALLY CHANGING GRINDING DISCS

A device () for automatically changing sanding discs () includes a stacking device () for a plurality of grinding discs () and a guide element () for orienting the suction openings () in the grinding discs () along a common central axis (), wherein the guide element () is arranged eccentrically with regard to the central axis (). A positioning element () is provided for positioning a tool head of a grinding device, wherein the positioning element () and the guide element () are mounted in a floating manner. A device () for automatically changing grinding discs () includes a detachment device (), wherein the detachment device () has a bearing surface () for a grinding-disc receptacle. The bearing surface () has an opening (), the diameter of which is greater than the diameter of the grinding disc (). A separating element () is arranged above the opening (). A system includes a device () for automatically changing grinding discs () containing a stacking device () and a detachment device (). 112. A device for automatically changing sanding disks () , comprising:{'b': 10', '12, 'a stacking device () for a plurality of sanding disks (),'}{'b': 16', '32', '12', '18', '16', '18, 'a guide element () for vertical mutual orientation of openings () in the sanding disks () parallel to a common central axis (), the guide element () is arranged eccentrically with respect to the central axis (),'}{'b': 100', '12, 'a tool head having a rotatably mounted sanding disk receptacle () for a sanding disk (), said tool head being arranged on a manipulation device for executing a sanding movement,'}{'b': 17', '18', '10', '100, 'a positioning element () located on the central axis () of the stacking device () for positioning the tool head with the sanding disk receptacle () formed thereon,'}{'b': 17', '16', '10, 'the positioning element () and the guide element () are mounted in a floating manner on the stacking device (), and'}{'b': 101', '17, 'a central opening () for receiving the ...

ABRASIVE ARTICLE HAVING A NON-UNIFORM DISTRIBUTION OF OPENINGS

An abrasive article having a plurality of apertures arranged in a non-uniform distribution pattern, wherein the pattern is spiral or phyllotactic, and in particular those patterns described by the Vogel equation. Also, provided is a back-up pad having a spiral or phyllotactic patterns of air flow paths, such as in the form of open channels. The back-up pad can be specifically adapted to correspond with an abrasive article having a non-uniform distribution pattern. Alternatively, the back-up pad can be used in conjunction with conventional perforated coated abrasives. The abrasive articles having a non-uniform distribution pattern of apertures and the back-up pads can be used together as an abrasive system. 1. An abrasive system comprising:a coated abrasive; anda back-up pad,wherein the coated abrasive comprises a controlled non-uniform distribution pattern of apertures, andwherein the back-up pad comprises a plurality of air flow paths disposed in a pattern adapted to correspond with the apertures of the coated abrasive.2. The system of claim 1 , wherein the controlled non-uniform distribution pattern of apertures is a phyllotactic pattern.3. The system of claim 2 , wherein the controlled non-uniform distribution pattern of apertures is the Vogel equation.4. The system of claim 1 , wherein the pattern of air flow paths comprises regular polygons claim 1 , irregular polygons claim 1 , ellipsoids claim 1 , arcs claim 1 , spirals claim 1 , phyllotactic patterns claim 1 , or combinations thereof.5. The system of claim 4 , wherein the pattern of air flow paths is a spiral pattern or a phyllotactic pattern.6. The system of claim 4 , wherein the pattern of air flow paths comprises radiating arcurate airflow paths claim 4 , radiating spiral airflow paths claim 4 , or combinations thereof.7. The system of claim 6 , wherein the pattern further comprises an annular airflow path that intersects the radiating arcurate airflow paths claim 6 , radiating spiral airflow paths claim ...

Abrading Disc

A rotating circular disc attaches to a rotary motion abrading tool and converts the rotary motion to a random orbital motion. The disc has a center and has an axis of rotation that is off center and that forms a center of gravity. One embodiment of the disc is a backing plate. A second embodiment of the disc is a polishing pad. A third embodiment of the disc is a combination of a backing plate and a polishing pad. 1. An abrading disc for attachment to a rotary motion abrading tool that converts the rotary motion to a random orbital motion , the disc having a center , an axis of rotation that is off center and that forms a center of gravity , and a means for attachment to a rotary motion abrading tool.2. The abrading disc of wherein the disc comprises a backing plate having a working face for attachment of a polishing pad and an opposed face with an arbor extending outwardly from the opposed face that defines the axis of rotation and that attaches to a rotary motion abrading tool.3. The abrading disc of wherein the backing plate has a crescent shaped recess in the opposed face.4. The abrading disc of wherein the disc comprises a polishing pad having a working face with an abrasive surface and an opposed face having a means for attachment to a backing plate.5. The abrading disc of wherein the means for attachment comprises a hook and loop fabric.6. A backing plate for a rotary motion abrading tool that converts the rotary motion to a random orbital motion claim 1 , the backing plate comprising a circular plate having a center claim 1 , a working face for attachment of a circular polishing pad claim 1 , an opposed face with an arbor extending outwardly from the opposed face that defines an axis of rotation claim 1 , the axis of rotation being off center and forming a center of gravity when a circular polishing pad is attached to the working face.7. The backing plate of wherein the opposed face has a crescent shaped recess.8. The backing plate of wherein the working ...

Method for manufacturing in series optical grade polishing tools

Disclosed is a method that includes a step of applying glue including carrying out with a pad printing machine a sequence of steps in which is driven a transfer pad from a glue taking position to an applying position in which the distal surface of the transfer pad is in contact with one surface of one component of the tool; and then carrying out again at least once the sequence of steps, whereby the glue is applied at least twice onto the one surface of one component.

METHOD FOR MANUFACTURING IN SERIES OPTICAL GRADE POLISHING TOOLS

The method includes a step of applying glue including carrying out with a pad printing machine a sequence of steps in which is driven a transfer pad from a glue taking position to an applying position in which the distal surface of the transfer pad is in contact with one surface of one component of the tool and in which is simultaneously driven another transfer pad from a glue taking position to an applying position in which the distal surface of the another transfer pad is in contact with one surface of another component of the tool, whereby the glue is applied simultaneously to the one surface of the one component and to the one surface of the another component. 11011131211131211131012111213121112131112121112131312. A method for manufacturing in series optical grade polishing tools () each including a base () configured to be coupled to a polishing machine , a polishing pad () configured to be pressed against a surface to be worked and an elastically compressible body () attached to the base () and attached to polishing pad () with said body () sandwiched between the base () and the polishing pad (); said method including for each said tool () the step of attaching said body () to said base () and the step of attaching said body () to said polishing pad (); wherein at least one of said step of attaching said body () to said base () and said step of attaching said body () to said polishing pad () includes a step of applying glue in which glue is applied onto one surface of one component and then includes a step of pressing in which said one surface of one component and one surface of another component are applied on each other , said one component and said another component being one of: said base () and said body () , said body () and said base () , said body () and said polishing pad () , and said polishing pad () and said body (); [{'b': 20', '23', '23', '22', '22', '23', '23', '22', '22, 'the step of providing a supporting device () including a support (A-D, A- ...

ATTACHMENT HUB, BACKUP PAD, AND ABRASIVE DISC

The present invention relates to an attachment hub for attachment to a sander, comprising a quick-release attachment assembly configured for releasable and aligned engagement with a counterpart of a backup pad particularly for an abrasive disc. Furthermore, the invention relates to a backup pad having a disc-like shape and comprising a first major surface and a second major surface, the first major surface configured for direct or indirect attachment of an abrasive disc, and the second major surface configured for facing towards an attachment hub for attachment to a sander, and a mounting portion for aligned engagement with an attachment hub of a sander. 1. An attachment hub for attachment to a sander , comprising a quick-release attachment assembly configured for releasable and aligned engagement with a counterpart of a backup pad particularly for an abrasive disc.2. The attachment hub of claim 1 , wherein the attachment hub comprises a hub portion and a frame claim 1 , the hub portion being adapted for releasable attachment to the sander claim 1 , the frame having a truss configuration forming an outer perimeter of the attachment hub claim 1 , and the quick-release attachment assembly being mounted to the frame.3. The attachment hub of claim 1 , wherein the quick-release attachment assembly comprises an actuator claim 1 , wherein actuation of the actuator results in disengagement of the attachment hub from the counterpart claim 1 , wherein optionally the actuator comprises a button claim 1 , and wherein the quick-release attachment assembly is adapted to disengage from the counterpart upon a user pressing the button.4. The attachment hub of claim 1 , wherein the quick-release attachment assembly is configured for axial coupling with the counterpart and wherein the attachment hub comprises one or more protrusions and/or one or more recesses configured for rotational coupling of the attachment hub with the counterpart.5. The attachment hub of claim 1 , wherein the ...

Conduit arrangements in intermediate pad, backing pad, and abrading article for extracting abrading debris

The presented solution discloses conduit arrangements in an intermediate pad ( 20, 100 ), a backing pad ( 10, 200 ) and an abrading article ( 300, 400 ). The conduit arrangements enable controlled conveyance of air onto and extraction of air and debris from the surface of an intermediate pad ( 20, 100 ), a backing pad ( 10, 200 ) and an abrading article ( 300, 400 ). The presented solution is an intermediate pad ( 20, 100 ) suitable for use in an abrading system. The presented solution is an abrading system comprising an intermediate pad ( 20, 100 ). The presented solution is a backing pad ( 10, 200 ) suitable for use in an abrading apparatus ( 1 ). The presented solution is an abrading system comprising a backing pad ( 10, 200 ). The presented solution is an abrading article ( 300, 400 ) suitable for use in an abrading system. The presented solution is an abrading system comprising an abrading article ( 300, 400 ). The presented solution further relates to methods of using an abrading system for extracting abrading debris.

Grinding Tool Comprising Form Profile For An Oscillating Grinding Device

A grinding tool for a grinding device with an oscillatory drive, in particular a rotary oscillatory drive is disclosed, the drive shaft of which can be driven about its longitudinal axis, wherein the grinding tool includes a holder having a support for securing to the drive shaft of the oscillatory drive, and whereon a form profile with a grinding mechanism is provided, wherein the holder includes a profile support for releasable securement of the form profile, and wherein the profile support includes a clamping region, into which the form profile can be inserted with a holding section and can be fixed thereto, and which can be elastically enlarged for releasing the form profile. 1. A grinding tool for a grinding device comprising an oscillatory drive , the drive shaft of which can be oscillatingly driven about its longitudinal axis , said grinding tool comprising:a holder including a support for securing to said drive spindle of said oscillatory drive;a form profile including a grinding agent being received on said holder;a profile support provided on said holder for releaseably securing said form profile, said profile support comprising a clamping region being configured for receiving and securing a holding section provided on said form profile when inserting said holding section into said clamping region, said clamping region being further configured for being elastically enlarged to allow a release of said form profile secured within said clamping region;at least one gripping part being attached to said clamping region to allow an elastic enlargement of said clamping region; andan elastically enlargeable cavity provided within said clamping region into which said form profile can be inserted with its holding section and can be secured under action of an internal stress of said clamping region.2. The grinding device of claim 1 , wherein said form profile is secured frictionally engaged with its holding section within said cavity of said holder.3. The grinding ...

ABRASIVE PRODUCT FOR COMMUNICATION WITH ABRADING TOOL

A computing system may send and receive data from a variety of other devices, such as abrading tools and consumable abrasive products. The computing system may use this data for various purposes, such as tracking worker vibration dosage, monitoring inventory, promoting use of personal protective equipment, and other purposes. 1. A consumable abrasive product comprising:an abrading surface for abrading a workpiece;a communication unit configured to perform at least one of: sending data to one or more external devices, or receiving data from the one or more external devices; anda data storage unit configured to store the data; andone or more a detection components configured to detect whether an event has occurred that is sufficient to damage the consumable abrasive product.24-. (canceled)5. The consumable abrasive product of claim 1 , wherein the detection component comprises an impact detection component configured to detect whether the consumable abrasive product has been subjected to an impact with force sufficient to damage the consumable abrasive product claim 1 ,wherein the data storage unit is configured to store data indicating whether the consumable abrasive product has been subjected to an impact with force sufficient to damage the consumable abrasive product.6. The consumable abrasive product of claim 1 , wherein the detection component comprises an excessive rotation per minute (RPM) detection component configured to detect whether the consumable abrasive product has been subjected to an RPM level exceeding a threshold sufficient to damage the consumable abrasive product claim 1 ,wherein the data storage unit is configured to store data indicating whether the consumable abrasive product has been subjected to an RPM level exceeding the threshold sufficient to damage the consumable abrasive product.7. The consumable abrasive product of claim 1 , wherein the one or more external devices include an abrading tool to which the consumable abrasive product is ...

SANDING DEVICE INCLUDING MEANS FOR CHANGING A SANDING DISK

The invention relates to a sanding assembly including a sanding device () comprising a plate () for supporting a sanding disk () and motor-driven means () suitable for moving the supporting plate (), characterized in that the supporting plate () comprises two notches () distributed angularly along the periphery thereof, a first notch () for engaging with a positioning module () and a second notch () for engaging with a pulling jaw (), and a module () for verifying the presence of the sanding disk. 1. A sanding assembly comprising an abrasive disc consisting in a plate for supporting an abrasive disc and motor driven means suitable for moving the supporting plate , wherein the supporting plate comprises two notches distributed angularly along the periphery thereof , a first notch for engaging with a positioning module and a second notch for engaging with a pulling jaw and a module for verifying the presence of an abrasive disc.2. The assembly according to claim 1 , wherein it comprises 6 sub-assemblies: a system for indexing the plate claim 1 , an elevator system for pulling claim 1 , a system for pulling the disc claim 1 , a system for verifying the presence of a disc claim 1 , a system for storing new discs claim 1 , an elevator system for the magazine of new discs.3. The assembly according to claim 1 , wherein the sanding device is an orbital sander having a housing carrying a drive shaft centered on an axis and a driven shaft connected to the plate and itself centered on an axis parallel to the axis of the drive shaft but off-center with respect to this axis by a few millimeters claim 1 , the driven shaft being mounted rotationally free in a bearing connected to the drive shaft by a rigid radial arm transversal to the axis of the drive shaft.4. The assembly according to claim 1 , wherein the plate and the disc are equipped with respective through perforations of identical disposition.5. The assembly according to claim 1 , wherein the two notches are symmetrical ...

APPARATUS AND METHOD FOR THE AUTOMATIC CHANGING OF GRINDING MATERIALS

An apparatus includes: a receiving surface configured to receive a stack of grinding discs; a frame arranged substantially parallel to the receiving surface so that the stack of grinding discs is positioned between the receiving surface and the frame, the frame only partially overlapping an outer rim of a topmost grinding disc of the stack of grinding discs; and a mechanical pretensioning unit coupled with the frame such that a defined force is exerted by the frame on the stack of grinding discs.

Retaining Body for Flexible Grinding Means, Grinding System and Grinding Tool

A retaining body for a grinding structure, in particular a grinding wheel, includes a fixing layer with a fixing surface. The fixing surface has a fixing structure configured to fix a flexible grinding structure, and includes a support body with a support surface. The support surface supports a fixing layer retaining surface that lies opposite the fixing surface, and is connected to the retaining surface. The support body is air- and dust-permeable, and includes an air- and dust-permeable material. The fixing layer is configured such that the fixing surface is substantially air- and dust-permeable in a direction that runs substantially perpendicular to the fixing surface, and such that an air flow can pass from the fixing surface through the fixing layer in a substantially perpendicular manner relative to the fixing surface. 1. A retaining body for a grinding structure , comprising:a fastening layer with a fastening surface, having a fastening structure configured to fasten a flexible grinding structure; and the support body is air and dust permeable; and', 'the fastening layer is configured such that the fastening surface, in a direction running substantially perpendicular to the fastening surface, is substantially air and dust permeable, so that an air flow can pass from the fastening surface, substantially perpendicular to the fastening surface, through the fastening layer., 'a support body with a support surface configured to support a retaining surface, wherein2. The retaining body as claimed in claim 1 , wherein:the air flow running substantially perpendicular to the fastening surface, after having passed through the fastening layer, undergoes at least a partial diversion into a crossflow through the support body; andthe crossflow runs, from a perspective of the grinding structure, substantially behind the fastening layer.3. The retaining body as claimed in claim 1 , wherein:the fastening structure is configured as a mechanical fastening structure for ...

METHOD OF FINISHING A STONE SURFACE AND ABRASIVE ARTICLE

A structured abrasive article comprises a structured abrasive layer adhered to a major surface of a backing, the structured abrasive layer comprising shaped abrasive composites adhered to the major surface, the shaped abrasive composites comprising milled polycrystalline ceramic abrasive particles retained in a polymeric binder, wherein the milled polycrystalline ceramic abrasive particles have a median particle size Dof from 3 to 30 microns. In a method of finishing a stone surface, the structured abrasive layer is frictionally contacting with the stone surface; and moved relative to the stone surface under conditions sufficient to finish the stone surface.

APPARARTUS FOR CHANGING AN ABRASIVE SHEET IN AN ABRADING MACHINE

An apparatus for replacing an abrasive sheet in a sanding machine comprising a working head in which it is provided a support body having an engagement surface arranged to engage with an abrasive sheet. The sanding machine also comprises a handling device arranged to actuate the support body in space according to at least two degrees of freedom. The face of the abrasive sheet facing, in use, towards the support body and the engagement surface of this comprises a mutual engagement means of removable type. For example, the mutual engagement means can provide a layer of Velcro, i.e. a velvet layer on a face and a plurality of hooks on the other face, or an adhesive layer, in particular of reversible glue layer, or a plurality of projections and recesses mutually engageable with each other, or similar engagement elements. Furthermore, is provided a removal station in which it is installed a removal device having a sharp edge arranged to remove the sheet from the support body through a plurality of operations. 119.-. (canceled)20. A system for changing an abrasive sheet in a sanding machine comprising:a sanding machine including a support body having an engagement surface arranged to engage with the abrasive sheet and a handling device for handling spatially the support body according to at least two degrees of freedom; anda removal station including a removal device having a sharp edge, the removal station including a detection device that detects the presence of the abrasive sheet on the engagement surface of the support body;wherein the handling device is arranged to actuate the support body with respect to the removal station to bring the support body to a removal position in which the sharp edge of the removal device is located between the abrasive sheet and the support body to detach at least a portion of the abrasive sheet from the engagement surface.21. The system of claim 20 , wherein the removal device includes a gripping element that grips the detached portion ...

Self-leveling sandpaper grinding machine

The invention discloses a self-leveling sandpaper grinding machine, comprising a base part including a seat, a motor frame fixed to the seat, a motor supported on the motor frame, a decelerator connected to an output shaft of the motor, in which an output shaft of the decelerator penetrates the seat and extends to the other side of the seat; and a grinder part attached to the seat and opposing to the motor, which includes a tray, four barrier strips provided on the tray and forming a quadrangle, U-shaped clip seats provided along diagonals of the quadrangle, elastic pads inserted into sockets formed by the barrier strips and clip seats, sandpaper placed on the elastic pads, U-shaped clips for engaging with the clip seats and fastening the sandpaper together with the clip seats, and a transmission mechanism provided on the tray and for coupling with the output shaft of decelerator.

ELECTRIC POWER TOOL

In an angle electric power tool in which an output axis P intersects and is orthogonal to a motor axis J, a battery attachment portion is provided to the rear of a grip so as to extend in the rearward direction and a battery pack is configured to be attached to an upper surface of said battery attachment portion . Because of this configuration, the battery pack does not directly come into contact with a working surface W, thereby preventing flaws and scratches on the working surface W. 1. An electric power tool , comprising:a tool main body that houses an electric motor in a main body housing;an output shaft that protrudes from a lower portion of the tool main body and extends in an up-to-down direction; anda battery attachment portion for attaching a slide-attachment type battery pack that supplies power to the electric motor, the battery attachment portion being disposed at the rear portion of the tool main body, wherein,the battery pack is attached to an upper surface of the battery attachment portion.2. The electric power tool according to claim 1 , wherein the battery pack is attached to the upper surface of the battery attachment portion such that its shortest dimension is aligned with the up-to-down direction.3. The electric power tool according to claim 1 , wherein an upper end of the battery attachment portion region protrudes upward higher than the upper surface of the battery pack that is attached to the battery attachment portion.4. The electric power tool according to claim 1 , wherein an elastic member is disposed on the lower surface of the battery attachment portion.5. An electric power tool claim 1 , comprising:a tool main body that houses an electric motor in a main body housing;an output shaft that protrudes from a lower portion of the tool main body and extends in an up-to-down direction; anda battery attachment portion for attaching a slide-attachment type battery pack that supplies power to the electric motor, the battery attachment portion ...

Sanding Pad Anchor for use with a Detachable Sanding Head

A novel device for attaching a sanding pad to the detachable sanding head of a multi-use power tool is disclosed. An anchor is provided which mates with a recess in the face of the sanding head of a multi-use power tool. The anchor is inserted into the recess through an affixed sanding pad. The anchor engages the affixed sanding pad and compresses it between the walls of the recess to assist in securing the sanding pad. 1. A device for affixing a sanding pad within the attachment means recess of a detachable sanding head of a multi-purpose power tool , comprising: i. a base, a top surface, and at least one side surface extending between said base and said top surface around the perimeter of said plug;', 'ii. an attachment means orifice through which an attachment means may pass, said attachment means functioning to couple said detachable sanding head to said multi-purpose power tool;, 'a. a plug which is seated within an attachment means recess through said sanding pad affixed to said detachable sanding head of said multi-purpose power tool, said plug functioning to trap part of said sanding pad within said attachment means recess, said plug comprising at least2. The device of claim 1 , wherein said plug is shaped to permit it to be inserted into said attachment means recess so that at least one said side surface of said plug resides in close proximity to at least one side recess wall of said attachment means recess so as cause a portion of said sanding pad extending over and folded into said attachment means recess to become clamped between said at least one said recess wall of said attachment means recess and said at least one side surface of said seated plug when said plug is seated within said attachment means recess.3. The device of claim 1 , wherein said base of a seated said plug is shaped so as to permit it to be inserted into said attachment means recess so as to trap a portion of said sanding pad extending over and folded into said attachment means recess ...

PORTABLE DRYWALL SANDER HUB ASSEMBLIES WITH APERTURED BACKING ASSEMBLIES

A backerplate for a portable drywall sander hub assembly includes a mounting portion and a backerplate body. The mounting portion includes a threaded bore adapted to couple the backerplate to a sander hub. The backerplate body is connected to the mounting portion. The backerplate body forms a plurality of apertures therein positioned radially between an outer circumference of the backerplate body and the mounting portion. The plurality of apertures are adapted for dust to pass therethrough during operation of a drywall sander with the backerplate mounted thereto. 1. A backerplate for a portable drywall sander hub assembly , comprisinga mounting portion forming a threaded bore adapted to couple the backerplate to a sander hub; anda backerplate body connected to the mounting portion and forming a plurality of apertures therein positioned radially between an outer circumference of the backerplate body and the mounting portion, the plurality of apertures being adapted for dust to pass therethrough during operation of a drywall sander with the backerplate mounted thereto.2. The backerplate of claim 1 , wherein the mounting portion includes a rear protrusion that protrudes in an axial direction of the mounting portion and protrudes relative to the backerplate body in the axial direction claim 1 , the rear protrusion adapted to ensure that the backerplate body is offset from an opposing axially facing surface of the sander hub.3. The backerplate of claim 1 , wherein the mounting portion includes a front protrusion that protrudes in an axial direction of the mounting portion and protrudes relative to the backerplate body in the axial direction claim 1 , the front protrusion adapted to guide at least one of an intermediate plate and a backerplate fastener into axial alignment with the backerplate.4. The backerplate of claim 1 , wherein the backerplate body comprises an annular disc shape and the plurality of apertures are symmetrically positioned about the annular disc shape ...

Grinding tool and method for producing a grinding tool

A grinding tool has a main body having at least one fiber ply embedded in a binder. An abrasive layer is arranged on the main body. The at least one fiber ply is arranged in the binder in a partially movable manner. As a result, a relative movement that ensures high vibration and noise damping is achieved within the main body and within the at least one fiber ply. 120-. (canceled)22. The grinding tool as claimed in claim 21 , wherein each fiber ply comprises a plurality of yarns that are embedded in the binder in a partially movable manner relative to one another.23. The grinding tool as claimed in claim 21 , wherein the main body comprises a plurality of fiber plies that are embedded in the binder and are movable relative to one another in some region or regions.24. The grinding tool as claimed in claim 21 , wherein the main body comprises a plurality of fiber plies having a plurality of yarns claim 21 , and the yarns are embedded in the binder in a partially movable manner relative to one another.25. The grinding tool as claimed in claim 21 , wherein the at least one fiber ply comprises at least one of at least one woven fabric and at least one non-crimp fabric.26. The grinding tool as claimed in claim 21 , wherein the main body comprises a number N of fiber plies claim 21 , wherein: 1≤N≤12.27. The grinding tool as claimed in claim 21 , wherein claim 21 , for a ratio M of a mass ins of the binder to a mass mF of the at least one fiber ply claim 21 , the following applies: 1/25≤M≤1/2.28. The grinding tool as claimed in claim 21 , wherein the main body comprises damping particles.29. The grinding tool as claimed in claim 21 , wherein the binder is an organic adhesive.30. The grinding tool as claimed in claim 21 , wherein the main body is of curved design.31. The grinding tool as claimed in claim 21 , comprising a supporting layer claim 21 , which is connected to the main body and on which the abrasive layer is arranged.32. The grinding tool as claimed in claim 21 , ...

Grinding disc and method for manufacturing the same

A method for manufacturing a grinding disc comprising: injecting a first injection plastic material on a mandrel to form a preliminary carrier disc, the preliminary carrier disc including a first embedding portion for completely encircling the embedding section, and a carrier portion extended from a periphery of the first embedding portion; and injecting a second injection plastic material on the preliminary carrier disc to form a secondary carrier disc, the secondary carrier disc including an engaging portion adhered to and supported by the carrier portion, and a mounting surface opposite to the engaging portion. Thus, the grinding disc is adapted to quickly produce appropriate deformation according to contours of a grinding target for preferred grinding effects.

PROCESS FOR AUTOMATED SANDING OF A VEHICLE COMPONENT SURFACE

A process for automated sanding of a vehicle component surface is provided and includes providing a sanding mechanism having a sanding head engaged with a housing, a rotary motor contained within the housing, the rotary motor having a drive shaft rotatable about an axis and extending outwardly therefrom, a radial plate attached to a first end of the drive shaft, and a sanding disk having an abrasive surface releasably attached to the radial plate; attaching the sanding head to a gimbal having a pressure sensor; powering the rotary motor driving rotation of the drive shaft, the radial plate and the sanding disk in at least one of a clockwise or counterclockwise direction; movably applying the sanding disk to the surface at a maintained constant pressure; and achieving a desired finish on the surface prepared to be primed and painted to a class A auto high sheen surface finish. 1. A process for automated sanding of a vehicle component surface comprising:providing a sanding mechanism having a sanding head engaged with a housing, a rotary motor contained within said housing, the rotary motor having a drive shaft rotatable about an axis and extending outwardly therefrom, a radial plate attached to a first end of the drive shaft, the first end being distal to a second end relative to a longitudinal axis of the drive shaft, and a sanding disk having an abrasive surface releasably attached to the radial plate;attaching the sanding head to a gimbal having a pressure sensor;powering the rotary motor driving rotation of the drive shaft, the radial plate and the sanding disk in at least one of a clockwise or counterclockwise direction;movably applying the sanding disk to said vehicle component surface at a constant pressure;maintaining said constant pressure; andachieving a desired finish on said vehicle component surface, said desired finish being prepared to be primed and painted to a class A auto high sheen surface finish.2. The process of wherein said vehicle component is ...

ABRASIVE WHEEL WHICH CAN BE PROVIDED WITH A SANDPAPER

An abrasive wheel provided with a piece of sandpaper, including a columnar main body and a tension member. A first surface is formed on the periphery of the main body. The main body forms first and second storage chambers. The first surface forms a channel communicating with the first storage chamber. The second storage chamber extends on one side of the channel, so that one end of a piece of sandpaper enters the first storage chamber to form a restricted part. The other end of the sandpaper is located in the second storage chamber. The tension member is disposed in the first storage chamber, and is provided with a guide slot, so that the restricted part enters the guide slot through the channel, and the restricted part is guided to adhere to the circumferential wall as the tension member rotates, the sandpaper stretches tight and adheres to the first surface. 1. An abrasive wheel which can be provided with a piece of sandpaper , including:a columnar main body, the main body has a mounting end and a driven end; the mounting end is opposite to the driven end in the axial direction of the main body; a first surface is formed on the circumference of the main body; the first surface is located between the mounting end and the driven end, so that a piece of sandpaper is arranged on the first surface; a first storage chamber and a second storage chamber are formed inside the main body; the first storage chamber and the second storage chamber extend into the main body from the mounting end respectively; the first surface forms a channel, one end of the channel extends at the mounting end, the other end of the channel points at the driven end; the channel extends into the main body, and the channel communicates with the first storage chamber; the second storage chamber extends on one side of the channel, so that one end of the sandpaper enters the first storage chamber to form a restricted part; the other end of the sandpaper is located in the second storage chamber; the ...

Polishing Head, Chemical-Mechanical Polishing System, and Method for Polishing Substrate

A polishing head for a chemical-mechanical polishing system includes a carrier head, at least one electromagnetism actuated pressure sector and a membrane. The electromagnetism actuated pressure sector is disposed on the carrier head. The membrane covers the electromagnetism actuated pressure sector. 1. A polishing head for a chemical-mechanical polishing system , the polishing head comprising:a carrier head;at least one electromagnetism actuated pressure sector disposed on the carrier head; anda membrane covering the electromagnetism actuated pressure sector.2. The polishing head of claim 1 , wherein at least two of the electromagnetism actuated pressure sectors are located on the same circumferential line relative to a center axis of the carrier head.3. The polishing head of claim 1 , wherein a plurality of the electromagnetism actuated pressure sectors are at least partially arranged along a circumferential line relative to a center axis of the carrier head.4. The polishing head of claim 1 , wherein a plurality of the electromagnetism actuated pressure sectors are at least partially arranged in at least one row and at least one column.5. The polishing head of claim 1 , wherein the carrier head has at least one opening therein claim 1 , and the electromagnetism actuated pressure sector comprises:a permanent magnet located in the opening;a coil assembly telescopically received in the opening and in cooperation with the permanent magnet; anda sector plate connected to the coil assembly.6. The polishing head of claim 5 , wherein the electromagnetism actuated pressure sector further comprises:an elastic element connecting the sector plate to the carrier head.7. The polishing head of claim 1 , wherein the carrier head has at least one opening therein claim 1 , and the electromagnetism actuated pressure sector comprises:a coil assembly located in the opening;a permanent magnet telescopically received in the opening and in cooperation with the coil assembly; anda sector ...

ABRASIVE TOOL FOR MACHINING SURFACES

An abrasive tool for machining surfaces, which comprises a support associated with at least one abrasive layer, and a first layer and a second layer, both of which are made of elastically deformable material and are interposed between said support and said abrasive layer; the second layer has a higher stretch modulus than the first layer and is arranged in an intermediate position between the first layer and the abrasive layer, and the first layer is associated with the support. 114-. (canceled)15. An abrasive tool for machining surfaces , which comprises a support associated with at least one abrasive layer , comprising a first layer and a second layer , both of which are elastically deformable and are interposed between said support and said abrasive layer , the second layer having a higher stretch modulus than the first layer and being arranged in an intermediate position between the first layer and the abrasive layer , and the first layer being associated with the support.16. The tool according to claim 15 , wherein said second layer comprises a lamina made of metal claim 15 , of composite fibers claim 15 , plastics or rigid rubber.17. The tool according to claim 15 , wherein said first layer is made of sponge claim 15 , polyurethanes claim 15 , rubber or from a cushion containing fluids or powders.18. The tool according to claim 15 , wherein said second layer is provided seamlessly in a single piece and its extent in plan view is comparable to that of the abrasive layer.19. The tool according to claim 15 , wherein an adhesion surface between said first layer and said second layer is at least equal to an extent in plan view of said second layer.20. The tool according to claim 15 , wherein said support comprises means for coupling to a rotating shaft of an automatic machine tool.21. The tool according to claim 15 , wherein said first layer and said second layer and said support are coupled stably so as to adhere to each other claim 15 , detachable coupling means ...

Slotted wellhead and multibowl polishing tool with woven polishing belt

A tool for polishing a seal surface of a wellhead assembly includes a cylindrical tool body with an axis. The tool body includes a base member with a first end, and a second end. A tubular skirt member extends from the second end of the base member. The skirt member has a sidewall, a base end connected to the base member, and an open end opposite the base end. A plurality of axial slots extend through the sidewall of the skirt member, the axial slots being spaced circumferentially around the skirt member. A polishing belt is woven through the axial slots of the skirt member.

SANDING DEVICE

A sanding device includes a rotatable structure with one or a plurality of resilient extensions that extend outward from a front face of the rotatable structure. A holding structure holds an arch of sandpaper over each resilient extension such that the sandpaper arch covers a distal end of the resilient extension. 1. A sanding device comprising:a rotatable structure with one or a plurality of resilient extensions that extend outward from a front face of the rotatable structure; anda holding structure for holding an arch of sandpaper over each of said one or a plurality of resilient extensions such that the sandpaper arch covers a distal end of that resilient extension.2. The device of claim 1 , wherein said one or a plurality of resilient extensions extend substantially perpendicularly from the side of the rotatable structure.3. The device of claim one claim 1 , wherein a resilient extension of said one or a plurality of resilient extensions comprises a brush.4. The device of claim 1 , wherein the resilient extension is substantially flat.5. The device of claim 4 , wherein a width of the flat resilient extension is oriented substantially radially on the front face of the rotatable structure.6. The device of claim 1 , wherein the rotatable structure comprises a disk.7. The device of claim 1 , comprising a face plate that is separable from the rotatable structure.8. The device of claim 7 , wherein the holding structure comprises two slots in the face plate into which an each end of the sandpaper arch is insertable such that each end is held between the face plate and the rotatable structure when the face plate is tightened against the rotatable structure.9. The device of claim 8 , wherein the face plate comprises an opening for a resilient extension of said one or a plurality of resilient extensions claim 8 , the two slots straddling the opening.10. The device of claim 9 , wherein the two slots are substantially parallel to the opening.11. The device of claim 7 , ...

APPARATUS AND METHOD FOR THE AUTOMATIC REMOVAL OF GRINDING DISCS

A device for automatically removing a grinding wheel from a grinding machine mounted on a manipulator is described. According to one embodiment, the device has the following: a support plate with a surface for depositing a grinding wheel; a movable clamping element that is raised in a first position with respect to the support plate; an actuator that is coupled to the clamping element and is configured to move the clamping element into a second position in which the clamping element is pressed against the support plate such that the grinding wheel is clamped between the support plate and clamping element; and a release element that is arranged in such a way relative to the support plate that the release element is actuated when the grinding wheel is placed on the surface of the support plate and is pressed against the latter. The release element and the actuator are coupled (directly or indirectly, electrically or mechanically) such that, when the release element is actuated, the actuator moves the clamping element from the first position into the second position. 116-. (canceled)17. An apparatus , comprising:a bearing plate with a surface for depositing a grinding disc;a moveable clamping element which, in a first position, is raised in relation to the bearing plate;an actuator coupled to the moveable clamping element and configured to move the moveable clamping element into a second position in which the moveable clamping element is pressed against the bearing plate such that the grinding disc is clamped in between the bearing plate and the moveable clamping element; anda trigger element arranged relative to the bearing plate such that the trigger element is actuated when the grinding disc is placed onto the surface of the bearing plate and is pressed against the bearing plate,wherein the trigger element and the actuator are coupled such that, when the trigger element is actuated, the actuator moves the moveable clamping element from the first position into the ...

ABRASIVE FLAP DISC INCLUDING WEARABLE BACKING PLATE

This invention relates to abrasive flap discs that include wearable backing plates and methods of making and using such abrasive flap discs and wearable backing plates. The claimed articles, processes, and systems related to the use and manufacturing of such abrasive articles are improved in performance and cost effectiveness. 1. An abrasive flap disc comprising:a wearable backing plate; anda plurality of abrasive flaps concentrically disposed about a periphery of the wearable backing plate,wherein the wearable backing plate comprisesa first wearable polymeric layer;a first reinforcing layer, anda second reinforcing layer,wherein the first wearable polymeric layer is disposed between the first reinforcing layer and the second reinforcing layer.2. The abrasive flap disc of claim 1 , wherein the wearable backing plate further comprises:a second wearable polymeric layer disposed on the second reinforcing layer, anda third reinforcing layer disposed on the second wearable polymeric layer.3. The abrasive flap disc of claim 2 , wherein the wearable backing plate further comprises:a third wearable polymeric layer disposed on the third reinforcing layer, anda fourth reinforcing layer disposed on the third wearable polymeric layer.4. The abrasive flap disc of claim 1 , wherein the first wearable polymeric layer comprises:a polymeric resin, andabrasive particles, nonabrasive particles, filler particles, or a combination thereof dispersed in the polymeric resin.5. The abrasive flap disc of claim 4 , wherein the abrasive particles comprise a Mohs hardness of 9 or more.6. The abrasive particles of claim 5 , wherein the abrasive particles comprise one of alumina claim 5 , zirconia claim 5 , silicon carbide claim 5 , silicon nitride claim 5 , boron nitride claim 5 , diamond claim 5 , co-fused alumina zirconia claim 5 , titanium diboride claim 5 , boron carbide claim 5 , alumina nitride claim 5 , a combination thereof claim 5 , or a blend thereof.7. The abrasive flap disc of claim ...

System for Dressing A Centrifugal Clutch

A system for dressing centrifugal clutches has a drum tool with an internal abrasive surface, and a flap tool with abrasive flaps. The drum tool can replace the clutch drum on the clutch driven shaft to dress the clutch shoes, or the flap tool can replace the clutch shoes and mechanism on the clutch drive shaft, which may be the engine crankshaft, to dress the clutch drum. In either case, the tool being used and the component being dressed can accurately simulate the engagement of the clutch shoes and clutch drum in operation, so that the clutch drum and shoes can be accurately dressed to the correct shape, matching each other, for use. 1. A tool for dressing shoes of a centrifugal clutch , comprising:a hollow drum having a generally cylindrical drum portion open at one end, and having a portion for receiving a shaft at an other end opposite said one end; andan abrasive lining on an inside surface of said drum portion.2. A tool according to claim 1 , wherein said abrasive lining is removably and replaceably mounted on said inside surface of said drum portion.3. A tool according to claim 1 , wherein the drum is suitably dimensioned to replace a drum of a centrifugal clutch of a kart.4. A tool according to claim 1 , wherein said abrasive lining is a coated surface formed on the inside of the drum and includes abrasive grit.5. A tool according to claim 4 , wherein said abrasive coated surface is electroplated onto an inner surface of the drum.6. A tool for dressing a drum of a centrifugal clutch claim 4 , comprising:a hub configured to be mounted on a drive shaft;at least one bracket extending radially from said hub; andat least one strip of flexible material with an abrasive surface attached to and extending radially from said at least one bracket.7. A tool according to claim 6 , wherein said flexible material is removably and replaceably mounted on said at least one bracket.8. A tool according to claim 7 , wherein the tool is suitably dimensioned to dress a drum of a ...

Abrasive article and adapter therefore

An abrasive article and an adapter therefore are disclosed. The abrasive article comprises a backing and an abrasive coating on a surface of the backing, and has a centre point and a periphery and the abrasive coating forming a work surface. A plurality of holes extending through the backing and the abrasive coating are provided, through which particulate material may be extracted. The work surface is divided into at least a first inner and a second outer zone, the second zone being concentric with the first and the centre point. Each zone has at least one hole, wherein in each of the first and the second zone the sizes of the holes and their total number forms a hole density for that respective zone. The hole density of the first zone is less than the hole density of the second zone. The adapter has the mounting surface for the abrasive article adapted in a similar manner.

FLOOD COOLANT TO THROUGH SPINDLE COOLANT CONVERSION

Rotary tools configured to sand components and accommodate complex geometries thereof are provided. The rotary tools may include a rotary head and a shaft. Bristles and an abrasive material may be coupled to the abrasive material. The rotary tools may additionally include outlets configured to receive a flow of coolant to cool the rotary tool. A system configured to convert a flood coolant system to a through spindle coolant system is also provided. The system may include a hollow shaft with inlets and a redirector therein. A flow receptor may include scoops that receive coolant sprayed from a flood coolant system and direct the coolant through the inlets in the hollow shaft. Thereby, the coolant may contact the redirector and be directed downward through the hollow shaft to a rotary tool, such as the rotary tool described above. 1. A rotary tool , comprising:a tool head;a plurality of bristles coupled to the tool head; andan abrasive material coupled to the tool head,wherein the bristles and the abrasive material are water resistant and configured to conform to a shape of a component during rotation of the tool head about a rotational axis to affect a surface finish of the component.2. The rotatory tool of claim 1 , wherein the bristles comprise a plurality of polymer filaments and the abrasive material comprises a sandpaper.3. The rotary tool of claim 2 , wherein the polymer filaments are coupled to a back of the sandpaper.4. The rotary tool of claim 2 , wherein the sandpaper comprises a plurality of tabs extending substantially parallel to the polymer filaments.5. The rotary tool of claim 1 , wherein the bristles and the abrasive material extend radially from the rotational axis of the tool head.6. The rotary tool of claim 1 , wherein the rotary tool is configured to receive a flow of a coolant and direct the coolant out of the tool head to the bristles and the abrasive material.7. The rotary tool of claim 6 , further comprising a hollow shaft configured to ...

METHOD FOR JOURNAL FINISHING OF CRANKSHAFTS, CAMSHAFTS, AND JOURNALS

A method of grinding a surface of a crankshaft is provided. The method includes grinding the surface of the crankshaft by a grinding wheel, and polishing the surface of the crankshaft ground by the grinding wheel by oscillating a polishing wheel in a transverse direction perpendicular to a longitudinal direction of the crankshaft. 1. A method of grinding a surface of a workpiece , the method comprising:grinding the surface of the workpiece by a grinding wheel; andpolishing the surface of the workpiece ground by the grinding wheel by oscillating a polishing wheel in a transverse direction perpendicular to a longitudinal direction of the crankshaft.2. The method according to claim 1 , further comprising oscillating the polishing wheel at a stroke between 0.05-1.0 mm.3. The method according to claim 1 , further comprising oscillating the polishing wheel at a frequency between 2-25 Hz.4. The method according to claim 1 , further comprising applying a coolant during the polishing.5. The method according to claim 4 , wherein the coolant includes 6% water.6. The method according to claim 1 , wherein the polishing wheel is a cubic boron nitride (CBN) wheel.7. The method according to claim 6 , wherein the polishing wheel has a grain size between 15-76 microns.8. The method according to claim 6 , wherein the polishing wheel has 400 grit.9. The method according to claim 6 , wherein the polishing wheel is a vitrifiled CBN wheel.10. The method according to claim 6 , wherein the polishing wheel is a resin-bonded CBN wheel.11. The method according to claim 1 , wherein the polishing wheel removes stock material from the crankshaft at a depth of 20 microns.12. The method according to claim 1 , further comprising performing the grinding by plunge-grinding.13. The method according to claim 12 , wherein the plunge-grinding is performed by using a CBN wheel.14. The method according to claim 12 , wherein the CBN wheel for the plunge-grinding has a grain size of 151 microns.15. The method ...

Long-life abrasive pad assembly

An abrasive pad assembly, comprising having an abrasive layer having first and second surfaces with the first surface being coated with material particles having predetermined hardness characteristics, a substrate having first and second surfaces with the first surface attached to the second surface of the abrasive layer, the substrate being composed of a material having stiff and resilient characteristics, and a fastening layer having first and second surfaces with the first surface being attached to the second surface of the substrate and the first surface having fastening material disposed thereon.

METHOD AND APPARATUS FOR CARRYING OUT THE REPLACEMENT OF AN ABRASIVE ELEMENT IN A MACHINE FOR WORKING SURFACES

An apparatus () for carrying out the replacement of an abrasive element () in a machine () for finishing surfaces, comprises a support body () configured to reversibly engage the abrasive element (). The support body () and the abrasive element () provide, at respective engagement surfaces (), mutual engagement members of removable type () configured to move from an engagement position to a disengagement position by rotating about a rotational axis () in a first sense of rotation e, from the disengagement position to the engagement position, by rotating about the rotational axis () in a second sense of rotation opposite to the first one. The apparatus furthermore, comprises a displacement device () for moving the support body () in the space according to at least 1 degree of freedom. The apparatus (), furthermore, provides at least a removal station () for removing an abrasive element () from the support body (), or at least an application station () for engaging an abrasive element () to the support body (). 2116261626151025101626152516261626aabbaabb. Apparatus () claim 1 , according to claim 1 , wherein said mutual engagement members ( claim 1 ,) provide a threaded hole ( claim 1 ,) at one between said engagement surface () of said support body () and said engagement surface () of said abrasive element () claim 1 , and a threaded shaft ( claim 1 ,) at the other engagement surface ( claim 1 ,) claim 1 , said threaded hole ( claim 1 ,) and said threaded shaft ( claim 1 ,) configured to provide a threaded connection;3116261626151025101626152516261626aabbaabb. Apparatus () claim 1 , according to claim 1 , wherein said mutual engagement members ( claim 1 ,) provide a shaped hole (′ claim 1 ,′) at one between said engagement surface () of said support body () and said engagement surface () of said abrasive element () claim 1 , and a shaped shaft (′ claim 1 ,′) at the other engagement surface ( claim 1 ,) claim 1 , said shaped hole (′ claim 1 ,′) and said shaped shaft (′ ...

BACKING PAD FOR A HAND GUIDED POLISHING OR SANDING TOOL AND HAND GUIDED POLISHING OR SANDING TOOL WITH SUCH A BACKING PAD

A backing pad for a power tool having plate-like form and a trapezoid cross-section with a top surface, a larger bottom surface and a slanting circumferential surface connecting the top and bottom surfaces. The backing pad can be connected to a tool shaft of the tool and is adapted for receiving a polishing or sanding material on the bottom surface. The backing pad is provided with a recess and a plurality of holes and channels that creates a predefined air flow between the bottom surface of the backing pad and a working surface. At least one hole ending in an opening is located in an annular outer section of the bottom surface, the annular outer section being located opposite to the slanting circumferential surface of the backing pad. The additional hole is in connection with at least one opening located in the top surface of the backing pad. 1. A backing pad for a hand guided polishing or sanding tool , the backing pad having an essentially plate-like form and a trapezoid cross-section with a top surface , a bottom surface and a slanting circumferential surface resulting in the bottom surface that is larger than the top surface , the backing pad adapted to be fixedly connected to a moving mounting part of the tool at its top surface and to receive a polishing or sanding material on the bottom surface , the backing pad being provided with a plurality of channels each extending essentially radially and essentially parallel to the top and bottom surfaces through at least part of the backing pad a central recess located in the bottom surface and a plurality of holes each having a longitudinal extension essentially perpendicular to the top and bottom surfaces through the backing pad and connecting an opening in the bottom surface with an opening in the top surface , the backing pad is further provided with at least one additional hole each located such that it ends in an opening in an annular outer section of the bottom surface , the annular outer section is located ...

Grinding Tool Device, Grinding Means, and Grinding Tool System

An abrasion plate includes at least one backing unit including one of a support pad and a support plate. At least one fastening unit is configured to detachably fasten at least one abrasive selected from the group consisting of an abrasive paper and an abrasive fleece, to the at least one backing unit. The abrasion plate further includes at least one backing element on which the abrasive is arranged via the fastening unit when the abrasive is detachably fastened to the at least one fastening unit. The at least one backing element is made from a material having a melting temperature of more than 160° C. 1. An abrasion plate , comprising: at least one fastening unit configured to detachably fasten at least one abrasive selected from the group consisting of an abrasive paper, and an abrasive fleece, to the at least one backing unit, and', 'at least one backing element on which the abrasive is arranged via the fastening unit when the at least one abrasive is detachably fastened to the at least one fastening unit, wherein the at least one backing element is made from a material having a melting temperature of more than 160° C., 'at least one backing unit including one of a support pad and a support plate,'}2. The abrasion plate as claimed in claim 1 , wherein the at least one fastening unit comprises at least one fastening element configured to fasten the at least one abrasive to the at least one backing element claim 1 , that is made from a material having a melting temperature of more than 160° C.3. The abrasion plate as claimed in claim 1 , wherein the at least one fastening unit comprises at least one adhesive element that is designed to replaceably fasten the at least one fastening element of the at least one fastening unit that is realized as a hook-and-loop fastening claim 1 , to the at least one backing element.4. The abrasion plate as claimed in claim 1 , wherein the at least one backing element has a maximum thickness of 5 mm measured perpendicularly to a ...

Changing Station for the Automatic Changing of Grinding Materials

The invention relates to a device for automatically dressing an abrasive disk from a robot-supported grinding device having a grinding machine. According to one embodiment, the device comprises a frame, a separating plate connected to the frame, and a support surface connected to the frame. The separating plate and the support surface are coupled to the frame in such a way that a relative movement is ensured along a first direction between the separating plate and the support surface. The separating plate and the support surface are arranged in such a manner that—when the abrasive disk rests on the support surface and when the separating plate and the abrasive disk move towards each other—a first edge of the separating plate is pushed over the abrasive disk. The invention further relates to a device for automatically fitting a grinding machine of a robot-supported grinding device with an abrasive disk. According to one embodiment, the device comprises a support for receiving a stack of abrasive disks and a frame. The frame is arranged substantially parallel to the support, so that the stack of abrasive disks is located between the support and the frame, wherein the frame only partially overlaps the outer edge of the uppermost abrasive disk of the stack. The device further comprises a mechanical prestressing unit which is coupled to the frame in such a manner that a defined force is exerted by the frame onto the stack of abrasive disks. 132-. (canceled)33. An apparatus , comprising:a receiving surface configured to receive a stack of grinding discs;a frame arranged substantially parallel to the receiving surface so that the stack of grinding discs is positioned between the receiving surface and the frame, the frame only partially overlapping an outer rim of a topmost grinding disc of the stack of grinding discs; anda mechanical pretensioning unit coupled with the frame such that a defined force is exerted by the frame on the stack of grinding discs.34. The apparatus ...

APPARATUS FOR CHANGING AN ABRASIVE SHEET IN AN ABRADING MACHINE

A system for replacing an abrasive sheet in a sanding machine including a working head in which it is provided a support body having an engagement surface arranged to engage with an abrasive sheet. The sanding machine also includes a handling device arranged to actuate the support body in space according to at least two degrees of freedom. The system may include a computing device to compute the spatial orientation of the support body. Furthermore, the system may include a removal station having a gripping element configured to grip the abrasive sheet in order to disengage the abrasive sheet from the support body. 1. A system for changing an abrasive sheet in a sanding machine comprising:a sanding machine having a support body with an engagement surface arranged to engage with the abrasive sheet and a handling device for handling spatially the support body according to at least two degrees of freedom;a removal station having a gripping element configured to grip the abrasive sheet in order to disengage the abrasive sheet from the support body; anda computing device to compute the spatial orientation of the support body, and the handling device arranged to bring the support body to a position having a known spatial orientation.2. The system of claim 1 , wherein the removal station includes a detection device that detects the presence of the abrasive sheet on the engagement surface of the support body.3. The system of claim 2 , wherein the detection device is a sensor of color recognition of an abrasive side of the abrasive sheet claim 2 , which is of a color different from the engagement surface of the support body.4. The system of claim 2 , wherein the detection device is a diffuse-type laser sensor.5. The system of claim 1 , wherein the removal station includes an edge to disengage the abrasive sheet on the engagement surface of the support body.6. The system of claim 5 , wherein the edge is a sharp edge.7. The system of claim 1 , wherein the handling device is ...

TORNADO PAD

A rotatory sander pad includes a rigid inner portion for attaching to a rotary sander tool and a flexible outer portion for accepting an abrasive medium. The flexible outer portion includes a substantially flat bottom surface for accepting the abrasive medium, a through-hole substantially in its center, and a multi-dimensional upper surface that includes air flow channels disposed between the through-hole and a vertically oriented wall that direct air from below the substantially flat bottom surface through the through-hole and away from the abrasive medium. 1. A rotatory sander pad comprising:a rigid inner portion for attaching to a rotary sander tool;a flexible outer portion for accepting an abrasive medium, the flexible outer portion comprising:a substantially flat bottom surface for accepting the abrasive medium;a through-hole substantially in its center; anda multi-dimensional upper surface that includes air flow channels disposed between the through-hole and a vertically oriented wall that direct air from below the substantially flat bottom surface through the through-hole and away from the abrasive medium.2. A pad for an orbital machine , comprising a substantially circular pad for holding an abrasive medium , the pad comprising air flow channels that promote air flow as a result of rotating the pad so that debris generated by the use of the abrasive medium is transported from an opening in the center of the pad away from a working surface of the abrasive medium.3. An apparatus comprising:an upper part configured to attach to an orbital sander drive shaft, the upper part generally circular with substantially a plurality of openings along its circumference disposed to align with air flow ramps of a lower part; and a center circular opening;', 'a circular outer edge that has a vertical wall for capturing the circumference of the upper part', 'a plurality of air flow ramps shaped into the lower part to direct air flow from the circular opening toward the ...

ROTARY ABRASIVE BRUSH FOR DEBURRING AND METHOD OF MANUFACTURING

A rotary tool containing a core hub with helical groove on its outer surface filled in with continuous abrasive filament formed by folding of a pre-cut abrasive sheet including multiple bristle like straps extending radially from the hub. The method of manufacturing includes the steps of providing a hub, and forming a helical groove with inverted V-shaped cross-section along its cylindrical surface. An abrasive element is wound around the hub so that the folded edge is fed in the V-grove and is buckled inside the groove providing, along with securing it by sufficient pre-tension of the abrasive element, a secure anchoring of the abrasive element through locking of the buckled edge. The abrasive filament is formed from a roll of abrasive cloth as one continuous piece using a cutting operation and is provided with center-line perforations. These perforations assist folding the filament by providing it with discrete and desired flexibility as well as weakening it in such way that it assists the process of folded edge buckling inside the groove during winding and therefore forms a tight anchoring junction with the hub without need for an adhesive. 1. An abrasive tool , comprising:a rotatable body having a helical groove formed within its outer surface;a continuous abrasive filament having a plurality of abrasive straps extending outwardly and integral with said filament having a fold center line in said filament, said filament being positioned within said groove by its folded edge, the ends of said filament being secured in said body.2. The rotary tool as set forth in claim 1 , wherein said body is composed of foam.3. The rotary tool as set forth in claim 2 , wherein said foam is polymeric foam.4. The rotary tool as set forth in claim 3 , wherein said foam is polystyrene.5. The rotary tool as set forth in claim 1 , wherein said fold center line is defined by perforations.6. The rotary tool as set forth in claim 1 , wherein said abrasive filament comprises abrasive tape. ...

Machine for replacing disc tools

A method and a machine for automatically changing a disc tool to a tool holder of an automated machine working with the disc tools is disclosed. The method includes in the disc tool replacement machine: determining that the tool holder is in a replacement area in the disc tool replacement machine; unfastening a fixing member of the tool holder by applying an unfastening force to the fixing member, wherein the fixing member fixes a disc tool to a backing plate of the tool holder through a through hole at a centre of the disc tool; removing the disc tool from the tool holder after said unfastening; inserting a new disc tool to the tool holder; and fastening the fixing member of the tool holder by applying a fastening force to the fixing member, thus fixing the disc tool to the backing plate of the tool holder through the through hole.

Method of fabricating sandpaper for grinding industrial parts and sandpaper fabricated by the method

Disclosed herein are a method of fabricating sandpaper for grinding industrial parts and sandpaper fabricated by the method. The method includes: a cutting step of cutting sandpaper to a set length; a cutoff hole formation step of forming a plurality of cutoff holes in one side periphery of the sandpaper in a lengthwise direction; a winding step of forming a roll of sandpaper by winding the sandpaper around one side of a spindle; a taping step of temporarily fastening the roll of sandpaper by winding tape; a bonding step of securely fastening the one side of the roll of sandpaper by applying bond to a side surface of the roll of sandpaper; and a drying step of drying the bond for a set time. In the sandpaper, a plurality of cutoff holes is formed in one side periphery of the sandpaper in a lengthwise direction.

TOOL ATTACHMENT MEANS FOR POWER TROWELS

A tool driver for a power trowel, the tool driver comprising a combination of a magnetic fastening arrangement and a hook and loop based fastening arrangement for releasably holding an abrasive tool to the tool driver, wherein the magnetic fastening arrangement is configured symmetrically around a rotational center of the tool driver, wherein the hook and loop based fastening arrangement is adapted to provide increased shear strength during abrasive operation of the tool, and wherein the magnetic fastening arrangement is adapted to provide increased pull strength during lifting of the tool driver. 1. A tool driver for a power trowel , the tool driver comprising a combination of a magnetic fastening arrangement and a hook and loop based fastening arrangement for releasably holding an abrasive tool to the tool driver , wherein the magnetic fastening arrangement is configured symmetrically around a rotational center of the tool driver , wherein the hook and loop based fastening arrangement is adapted to provide increased shear strength during abrasive operation of the tool , and wherein the magnetic fastening arrangement is adapted to provide increased pull strength during lifting of the tool driver.2. The tool driver according to claim 1 , wherein the hook and loop based fastening arrangement comprises a material with hooks for holding respective loops on the abrasive tool.3. The tool driver according to claim 1 , wherein the hook and loop based fastening arrangement comprises a material with loops for holding respective hooks on the abrasive tool.4. The tool driver according to claim 3 , wherein the material with loops is a felt-like cloth claim 3 , a fibrous material claim 3 , a foam claim 3 , rubber claim 3 , and/or a non-synthetic material.5. The tool driver according to claim 1 , wherein the magnetic fastening arrangement comprises a plurality of magnets arranged symmetrically around a rotational center of the tool driver.6. The tool driver according to claim 1 , ...

Grinding Disc Device for a Grinding Apparatus

A grinding disc device for a grinding apparatus is described, having at least one grinding layer and a carrier disc fixedly connected to the grinding layer. The grinding layer has at least one connection surface (F) connected to the carrier disc and forms an abrasive grinding surface (F) lying opposite the connection surface (F) and facing away from the carrier disc. The carrier disc made of a plastic material is produced by injection molding and is connected immediately and directly to the connection surface (F) of the grinding layer, wherein the plastic material of the carrier disc is sprayed by injection molding immediately and directly onto the connection surface (F) of the grinding layer, such that the carrier disc and the grinding layer are connected to one another in a material-locking manner. 1. A grinding disc device for a grinding apparatus comprising: at least one grinding layer and a carrier disc fixedly connected to the grinding layer , wherein the grinding layer comprises a connection surface (F) connected to the carrier disc and forms an abrasive grinding surface (F) lying opposite the connection surface (F) and facing away from the carrier disc , wherein the carrier disc is made of a plastic material produced by injection molding and is connected immediately and directly to the connection surface (F) of the grinding layer , wherein the plastic material of the carrier disc is sprayed by means of injection molding immediately and directly onto the connection surface (F) of the grinding layer , such that the carrier disc and the grinding layer are connected to one another in a materially-bonded manner.2. The grinding disc device according to claim 1 , wherein the grinding layer consists essentially of a flat claim 1 , circular grinding disc or a sanding disc.3. The grinding disc device according to claim 1 , wherein the grinding layer is formed by a fiber disc or a vulcanised fiber disc.4. The grinding disc device according to claim 1 , wherein the ...

Sanding Tool Attachment

A sanding tool attachment includes an annular attachment body, a plurality of dust extraction holes, a tool fastening feature, a primary hook fastening feature, and a secondary fastening feature. The annular attachment body includes a first base wall, a second base wall, a lateral wall, and a central axis. The plurality of dust extraction holes is radially distributed around the central axis and traverses from the first base wall to the second base wall. The tool fastening feature is integrated onto the first base wall so that the sanding tool attachment can be secured to a random orbital sander. The primary hook fastening feature is integrated onto the second base wall and removably secures existing round sanding pads to the sanding tool attachment. The secondary fastener feature is integrated onto the lateral wall thus fastening a rectangular sanding strip to the sanding tool attachment. 1. A sanding tool attachment comprising:an annular attachment body;a plurality of dust extraction holes;a tool fastening feature;a primary hook fastener feature;a secondary fastener feature;the annular attachment body comprising a first base wall, a second base wall, a lateral wall, and a central axis;the plurality of dust extraction holes being radially distributed around the central axis;the plurality of dust extraction holes traversing from the first base wall to the second base wall;the tool fastening feature being integrated onto the first base wall;the primary hook fastener feature being integrated onto the second base wall; andthe secondary fastener feature being integrated onto the lateral wall.2. The sanding tool attachment as claimed in comprising:the first base wall and the second base wall being oppositely positioned of each other about the lateral wall;the first base wall being concentrically positioned to the second base wall;the first base wall being perimetrically connected to the lateral wall; andthe second base wall being perimetrically connected to the lateral ...

TOOL HOLDER AND HANDHELD ABRADING MACHINE

In order to provide a tool holder for holding a tool for treating the surface of a workpiece by means of which it is possible to treat workpieces in a low-vibratory and convenient manner, it is proposed that the tool holder comprise a disk-shaped base body which has an attachment section for the attachment of the tool holder to a machine tool and at least one resiliently flexible deformation section. 1. A tool holder for holding a tool for treating the surface of a workpiece comprising a disk-shaped base body which has an attachment section for the attachment of the tool holder to a machine tool and at least one resiliently flexible deformation section.2. A tool holder in accordance with claim 1 , wherein at least one resiliently flexible deformation section of the base body is substantially annular.3. A tool holder in accordance with claim 2 , wherein at least one resiliently flexible deformation section is of periodically varying flexibility or is uniformly flexible in the circumferential direction.4. A tool holder in accordance with claim 1 , wherein at least one resiliently flexible deformation section of the base body surrounds the attachment section of the base body at least approximately concentrically.5. A tool holder in accordance with claim 1 , wherein at least one resiliently flexible deformation section is formed by recesses and/or cut-outs claim 1 , especially by slit-like through-openings and/or by round through-openings claim 1 , in the base body.6. A tool holder in accordance with claim 1 , wherein at least one resiliently flexible deformation section is surrounded by a claim 1 , particularly annular claim 1 , thickened portion of material of the base body.7. A tool holder in accordance with claim 1 , wherein the base body comprises a synthetic material or is formed of a synthetic material.8. A tool holder in accordance with claim 1 , wherein the tool holder claim 1 , for attaching a tool claim 1 , comprises an adhesive layer which is fixed directly ...

PIPE PROCESSING SYSTEMS AND METHODS

A disclosed pipe scuffing device includes a frame and a shaft coupled to the frame and configured to rotate about a central axis. The pipe scuffing device also includes a drive motor configured to drive the rotation of the shaft. The device further includes one or more abrasive wheels disposed about the shaft and having an abrasive outer surface configured to engage an outer surface of a pipe when rotating with the shaft to remove one or more contaminants from the outer surface of the pipe. 1. A pipe processing system , comprising: a pipe scuffing device comprising an abrasive wheel assembly including one or more abrasive wheels having an abrasive surface and being configured to contact an outer surface of a pipe; and', 'a control system configured to control the pipe scuffing device to selectively engage and disengage the one or more flap wheels with the outer surface of the pipe., 'a pipe scuffing system, comprising2. The pipe processing system of claim 1 , further comprising a pipe positioning system comprising a support configured to support the pipe.3. The pipe processing system of claim 2 , wherein the pipe positioning system comprises a drive mechanism configured to alter a relative position between the pipe and the one or more abrasive wheels by driving movement of the support.4. The pipe processing system of claim 3 , wherein the drive mechanism is configured to drive movement of the support such that a spin direction of the pipe is counter to a spin direction of the one or more abrasive wheels.5. The pipe processing system of claim 2 , wherein the pipe scuffing device further comprises a frame configured to support the abrasive wheel assembly and to couple to the support such that the abrasive wheel assembly is configured to ascend and descend along a vertical length of the frame to engage and disengage with the pipe.6. The pipe processing system of claim 1 , further comprising a pipe wrapping system configured to receive the pipe after the pipe is scuffed ...

Spindle and tool holder refinisher

An apparatus and method for refinishing a tapered surface of a machine tool component. The apparatus includes a head defining at least three tapered segments which are configured to conform precisely to the taper of the machine tool component being refinished. Each segment includes a surface for receiving an abrasive strip, the surfaces configured to conform and confront a conical surface of a taper to be refinished. The head is adapted to engage the tapered surface of the machine tool component so that upon rotation of the head, the abrasive strips abrade the conical surface of the component. A head for refinishing a spindle bore includes three outwardly extending segments whereas the head for refinishing a tool holder shank surface includes three segments extending between annular portions, each segment having an inner tapered surface for receiving the abrasive strips.

Grinding disc

Embodiments described herein generally relate to a grinding disc is being rotatably drivable around an axis of rotation. The grinding disc has a front side as well as a rear side facing away from the front side. The grinding disc further includes a multi-layered circular grinding blank packet with a plurality of circular grinding blanks. The grinding blanks are flatly stacked over each other along the axis of rotation and in which each grinding blank includes a central through opening. The central through openings form together a recess of the circular grinding blank packet. Wherein the grinding disc has a backing plate, which is arranged in the recess, and the circular grinding blanks each are fixed individually to the backing plate.

Tool for Fine Machining of Surfaces

A surface fine machining tool has a working medium carrier with a bottom side and a top side. Grooves extend from the top side to the bottom side completely through the working medium carrier and have a narrowed portion at the bottom side but do not narrow upwardly toward the top side. The working medium carrier is an injection-molded plastic part. Lamellas with a holding rim and a lamella body are inserted with the holding rim in the grooves. The lamella body extends downward away from the holding rim, passes through the narrowed portion, and extends away from the bottom side. The lamellas are uniformly distributed about the bottom side. The grooves have an open end at a carrier rim of the working medium carrier. The open end has a cross-section matching the groove cross-section. A cover is connected to the top side and covers grooves and holding rims. 1. A tool for fine machining of surfaces , the tool comprising:a working medium carrier comprising a bottom side and a top side and further comprising grooves, wherein the grooves extend from the top side to the bottom side completely through the working medium carrier and comprise a narrowed portion at the bottom side but do not narrow in upward direction toward the top side, respectively;the working medium carrier comprised of an injection-molded plastic part;lamellas each comprising a holding rim and a lamella body connected to the holding rim;the lamellas inserted with the holding rim in the grooves, respectively, such that the lamella body of the lamellas extends downwardly away from the holding rim, passes through the narrowed portion, and extends away from the bottom side of the working medium carrier;the lamellas arranged so as to be uniformly distributed about the bottom side of the working medium carrier;the grooves each comprising an open end in a longitudinal direction of the grooves at a carrier rim of the working medium carrier, wherein the open end has a cross-section matching a cross-section of the ...

PAD FOR SUPPORTING GRINDING DISK

To suppress the increase in the heat generated in the grinding disk during grinding. The pad according to one aspect is a pad supporting a grinding disk by being affixed to a shaft of a grinding machine together with the grinding disk, the pad including a support surface opposing the grinding disk, a back surface opposing the support surface, and a plurality of air passages formed at a predetermined spacing along the circumferential direction of the support surface. At least a portion of each of the air passages penetrates from the support surface to the back surface. Each of the air passages is formed to the peripheral portion of the support surface. 1. A pad supporting a grinding disk by being affixed to a shaft of a grinding machine together with the grinding disk , comprising:a support surface opposing the grinding disk;a back surface opposing the support surface; anda plurality of air passages formed at a predetermined spacing along a circumferential direction of the support surface,at least a portion of each of the air passages penetrating from the support surface to the back surface, andeach of the air passages being formed to a peripheral portion of the support surface.2. The pad according to claim 1 , wherein each of the air passages is formed in a spiral shape.3. The pad according to claim 1 , wherein each of the air passages is formed substantially radial.4. The pad according to claim 1 , wherein each of the air passages is formed in an arc shape that is convex in a rotation direction.5. The pad according to claim 1 , wherein the width of each of the air passages widens from the center portion of the support surface toward the peripheral portion. One aspect of the present invention relates to a pad for supporting a grinding disk.Grinding machines of various types are known conventionally and one such grinding machine is a portable grinder. For example, Patent Document 1 describes an orbital sander drive device in which a drive shaft having a first end ...

ABRASIVE ARTICLE HAVING A NON-UNIFORM DISTRIBUTION OF OPENINGS

An abrasive article having a plurality of apertures arranged in a non-uniform distribution pattern, wherein the pattern is spiral or phyllotactic, and in particular those patterns described by the Vogel equation. Also, provided is a back-up pad having a spiral or phyllotactic patterns of air flow paths, such as in the form of open channels. The back-up pad can be specifically adapted to correspond with an abrasive article having a non-uniform distribution pattern. Alternatively, the back-up pad can be used in conjunction with conventional perforated coated abrasives. The abrasive articles having a non-uniform distribution pattern of apertures and the back-up pads can be used together as an abrasive system. 1. A back-up pad comprising:a plurality of air flow paths disposed in a pattern, wherein the pattern of air flow paths comprises regular polygons, irregular polygons, ellipsoids, arcs, spirals, phyllotactic patterns, or combinations thereof.2. The back-up pad of claim 1 , wherein the pattern of air flow paths comprises radiating arcurate paths claim 1 , radiating spiral paths claim 1 , or combinations thereof.3. The back-up pad of claim 2 , wherein the pattern of air flow paths comprises a combination of inner radiating spiral paths and outer radiating spiral paths.4. The back-up pad of claim 2 , wherein the pattern of air flow paths comprises a combination of clock-wise radiating spiral paths and counter clock-wise radiating spiral paths.5. The back-up pad of claim 2 , wherein the pattern of air flow paths further comprises an annular airflow path that intersects the radiating arcurate paths or radiating spiral paths claim 2 , or combinations thereof.6. A back-up pad comprising: a pattern of air flow paths claim 2 , wherein the pattern of air flow paths is generated from x and y co-ordinates of a controlled non-uniform distribution pattern.7. The back-up pad of claim 6 , wherein the pattern of air flow paths comprises a spiral pattern or a phyllotactic pattern.9. ...

METHOD AND SYSTEM FOR PRODUCING ABRASIVE PRODUCTS

A method for producing abrasive products and an abrasive product. The abrasive products have a connector protruding therefrom, the connector being one of an interiorly-threaded hub, a protruding shaft and an exteriorly-threaded stud. The method includes a plurality of abrasive flaps secured to one another and to a disk from which the connector protrudes by adhesive. The improvement includes forming the connector separately from the disk and securing thereto after the plurality of abrasive flaps have been secured to the disk. 1. An improved method for producing abrasive products , the abrasive products being of the type having a connector protruding therefrom , the connector being one of an interiorly-threaded hub , a protruding shaft and an exteriorly-threaded stud , the method being of the type wherein a plurality of abrasive flaps are secured to one another and to a disk from which the connector protrudes by adhesive , the improvement comprising:the connector being formed separately from the disk and secured thereto after the flaps have been secured to the disk.2. An abrasive product comprising:a backer disc having a bore;a plurality of abrasive pieces secured to one another and to the backer disc by adhesive; anda connector formed separately from the disk, the connector being one of an interiorly-threaded hub, a protruding shaft and an exteriorly-threaded stud.3. An abrasive product according to claim 2 , wherein the connector is the threaded hub and is adhesively secured to the disk.4. An abrasive disk according to claim 2 , wherein the connector is the threaded hub and is friction welded to the backer disc.5. An abrasive product according to claim 2 , wherein the connector is the exteriorly threaded stud.6. An abrasive product according to claim 4 , wherein the bore is threaded and the threaded stud forms part of a component which is threadingly engaged by the bore.7. An abrasive product according to claim 4 , wherein the threaded stud forms one end of a ...

GRINDING-DISC DEVICE FOR POWER TOOLS

A grinding-disc device for power tools has an outer cover, a grinding tray and a grinding element. The outer cover has a casing and a mounting tube. The casing has a chamber, a connecting tube, at least one engaging hole and at least one engaging arm. The mounting tube is connected to the connecting tube. The grinding tray is detachably connected to the outer cover and has a body and at least one engaging element. The body is mounted below the casing and has a tube seat and a connecting board. The at least one engaging element is formed on the body, engages the at least one engaging arm to hold the grinding tray with the outer cover, and each one of the at least one engaging element has an engaging hook. The grinding element is detachably connected to the grinding tray below the outer cover. 1. A grinding-disc device for power tools having: [ an open bottom;', 'a closed top;', 'a center;', 'an outer periphery;', 'an internal surface;', 'a chamber formed in the casing between the open bottom and the closed top of the casing and communicating with the open bottom of the casing;', 'a connecting tube formed on and protruding from the closed top of the casing at the center of the casing, communicating with the chamber and having a top end;', 'at least one engaging hole formed through the closed top of the casing and communicating with the chamber; and', 'at least one engaging arm formed on and protruding from the internal surface of the casing near the open bottom of the casing; and, 'a casing having'}, 'a mounting tube connected to the connecting tube of the casing;, 'an outer cover having'} [ [ a top end abutting the closed top of the casing;', 'a bottom end; and', 'an external surface; and, 'a tube seat mounted in the chamber via the open bottom of the casing and having'}, 'a connecting board radially formed around the external surface of the tube seat at the bottom end of the tube seat and having a top side; and, 'a body mounted below the casing and having'}, 'at ...

DEVICE FOR AUTOMATICALLY CHANGING GRINDING DISCS

A device () for automatically changing sanding discs () includes a stacking device () for a plurality of grinding discs () and a guide element () for orienting the suction openings () in the grinding discs () along a common central axis (), wherein the guide element () is arranged eccentrically with regard to the central axis (). A positioning element () is provided for positioning a tool head of a grinding device, wherein the positioning element () and the guide element () are mounted in a floating manner. A device () for automatically changing grinding discs () includes a detachment device (), wherein the detachment device () has a bearing surface () for a grinding-disc receptacle. The bearing surface () has an opening (), the diameter of which is greater than the diameter of the grinding disc (). A separating element () is arranged above the opening (). A system includes a device () for automatically changing grinding discs () containing a stacking device () and a detachment device (). 1. A device for automatically changing sanding disks , comprising:{'b': 50', '12', '100', '50, 'a detaching device () for detaching sanding disks () from sanding disk receptacles (), the detaching device () comprises{'b': 51', '52', '12, 'a support surface () that has an opening (), a diameter of which is greater than a diameter of the sanding disks (), and'}{'b': '53', 'a separating element () is arranged above the opening.'}2535455. The device as claimed in claim 1 , wherein the separating element () has a separating edge () that comprises a point ().3. The device as claimed in claim 2 , wherein the point is configured with a V-shape or a W-shape.453515351. The device as claimed in claim 2 , wherein the separating element () is fastened to the support surface () claim 2 , and a spacer element is provided between the separating element () and the support surface ().553. The device as claimed in claim 1 , wherein the separating element () comprises a disk.6. The device as claimed ...

Automatic wet sanding apparatus

To change the direction of water flowing toward a painted surface so as to flow toward the center side of a hood, a water deflecting member is provided that extends toward the center side of the hood while extending toward the painted surface as seen in a state where automatic wet sanding is performed. Thus, water bouncing off the painted surface is less likely to scatter over a wide area of the painted surface, and sanding dust is also less likely to scatter over a wide area of the painted surface. As a result, it is possible to eliminate the need for the troublesome task of wiping off sanding dust remaining on the painted surface, and to achieve a quality finish on the painted surface.

Automatic wet sanding apparatus

An automatic wet sanding apparatus is equipped with a suction unit having a suction nozzle that is located under an automatic wet sanding unit in a state where automatic wet sanding is performed and a suction device that generates a suction force for suctioning water through the suction nozzle, so that water having been used for automatic wet sanding can be suctioned through the suction nozzle. This can significantly reduce the amount of water containing sanding dust that flows down a painted surface under the suction nozzle, and thereby reduce the amount of sanding dust that remains on the painted surface after completion of automatic wet sanding. As a result, it is possible to achieve a quality finish on the painted surface while eliminating the need for the troublesome task of wiping off remaining sanding dust.

AUTOMATIC WET SANDING APPARATUS

In an automatic wet sanding apparatus including a paper peeling unit that has a clamping shaft and a clamping hook, an inclination angle of a leading end surface of the clamping hook is equal to an inclination angle of an outer circumferential surface of a cushion pad at the start of a paper peeling step. Thus, the leading end surface of the clamping hook comes into contact with an outer circumferential end of a disc at the same time as coming into contact with the outer circumferential surface of the cushion pad, so that the cushion pad is less likely to get caught due to deformation of the outer circumferential surface and its peripheral part of the cushion pad. It is therefore possible to appropriately remove the sandpaper from the cushion pad and stably perform the task of removing the sandpaper. 1. An automatic wet sanding apparatus that performs automatic wet sanding in which sandpaper is pressed against a painted surface of a painted object that has been painted and the sandpaper is moved with water flowing between the sandpaper and the painted surface to sand down the painted surface ,the automatic wet sanding apparatus comprising an automatic wet sanding unit and a paper peeling unit, wherein:the automatic wet sanding unit includes a metal disc and a cushion pad which moves integrally with the disc and is made of a soft material and on which the sandpaper is detachably mounted;the paper peeling unit includes a clamping shaft and a clamping hook disposed close to an outer circumferential surface of the clamping shaft, and is configured such that the sandpaper is removed from the cushion pad as the automatic wet sanding unit is moved with the sandpaper caught between the clamping shaft and the clamping hook;an outer circumferential end of the disc is located on an outer circumferential side relative to a position of an outer circumferential end of a paper mounting surface of the cushion pad on which the sandpaper is mounted; andthe clamping hook has a leading ...

POLISHING DISC FOR A TOOL FOR FINE PROCESSING OF OPTICALLY EFFECTIVE SURFACES ON SPECTACLE LENSES

The invention relates to a polishing disc for a tool for fine processing optically active surfaces on spectacle lenses, having a main body which has a central axis and to which an intermediate layer that is softer than the main body and is made of a resilient material is secured, a polishing medium carrier resting on the intermediate layer. The intermediate layer has at least two regions with different degrees of hardness, said regions being arranged one behind the other in the direction of the central axis of the main body. The intermediate layer region adjoining the main part is softer than the intermediate layer region on which the polishing medium carrier rests. 1. A polishing disc for a tool for fine processing of optically effective surfaces on spectacle lenses , comprising a base body which has a center axis and to which is secured an intermediate layer , on which a polishing medium carrier rests , of a resilient material , the intermediate layer being softer by comparison with the base body , characterized in that the intermediate layer has at least two regions of different hardness arranged in succession in the direction of the center axis , wherein the region of the intermediate layer adjoining the base body is softer than the region of the intermediate layer on which the polishing medium carrier rests.2. A polishing disc according to claim 1 , characterized in that the at least two regions of the intermediate layer are formed by mutually different foam material layers claim 1 , namely at least one softer foam material layer on the base body and at least one harder foam material layer under the polishing medium carrier.3. A polishing disc according to claim 2 , characterized in that the mutually different foam material layers are glued together.4. A polishing disc according to claim 3 , characterized in that the ratio of the substantially constant thickness of the harder foam material layer to the substantially constant thickness of the softer foam ...

ABRASIVE TOOL AND USE OF SUCH AN ABRASIVE TOOL

An abrasive tool, including an abrasive carrier () having a shaft () for connecting the abrasive carrier () to a driving device for rotatably driving the abrasive carrier () about a longitudinal axis (X) and having a core () connected to an axial end () of the shaft (), and an abrasive article () having a surface () being circumferentially closed about the longitudinal axis (X) and enclosing a cavity () extending along the longitudinal axis (X), wherein the core () is accommodated at least partially in the cavity (), and wherein the core () includes a material mixture which includes a plastic with a heat-conductive filler, wherein the plastic is foamed, and wherein the filler has a thermal conductivity greater than 35 watts per meter and per Kelvin. 1. Abrasive tool , comprising{'b': 1', '2', '1', '1', '3', '4', '2, 'an abrasive carrier () having a shaft () for connecting the abrasive carrier () to a driving device for rotatably driving the abrasive carrier () about a longitudinal axis (X) and having a core () connected to an axial end () of the shaft (), and'}{'b': 15', '16', '17, 'an abrasive article () having a surface () being circumferentially closed about the longitudinal axis (X) and enclosing a cavity () extending along the longitudinal axis (X),'}{'b': 3', '17, 'wherein the core () is accommodated at least partially in the cavity (), and'}{'b': '3', 'wherein the core () consists of a material mixture comprising a plastic with a heat-conductive filler, wherein the plastic is foamed, and wherein the filler has a thermal conductivity greater than 35 watts per meter and per Kelvin.'}2. Abrasive tool according to claim 1 , characterized in{'b': 3', '3, 'that the volume of the foamed plastic is 70% to 95% of the total volume of the core (), wherein the volume of the filler and the volume of at least one optional functional additive in sum is at most 30% of the total volume of the core ().'}3. Abrasive tool according to claim 1 , characterized in{'b': 3', '3, ' ...

Rotary Sanding System

A rotary sanding system for retro fitting a Rotozip sanding disk to an air tool includes a first disk that may be removably coupled to an air tool thereby facilitating the air tool to rotate the first disk. The first disk has a plurality of openings extending therethrough and air may pass through the openings. A mating unit is coupled to the first disk. The mating unit engages the air tool thereby facilitating the first disk to be removably coupled to the air tool. A sanding disk is removably coupled to the first disk. The sanding disk may abrade a surface when the air tool rotates the first disk. 1. A rotary sanding system comprising:a first disk being configured to be removably coupled to a air tool thereby facilitating the air tool to rotate said first disk, said first disk having a plurality of openings extending therethrough wherein said openings are configured to have air pass through said openings;a mating unit being coupled to said first disk wherein said mating unit is configured to engage the air tool thereby facilitating said first disk to be removably coupled to the air tool; anda sanding disk being removably coupled to said first disk wherein said sanding disk is configured to abrade a surface when the air tool rotates said first disk.2. The system according to claim 1 , wherein said first disk has a bottom surface claim 1 , a top surface and a peripheral edge extending between said top surface and said bottom surface claim 1 , said top surface curving upwardly from said bottom surface to define a prominence on said first disk claim 1 , said prominence being centrally positioned on said first disk claim 1 , said prominence having a top end.3. The system according to claim 2 , wherein:said bottom surface having a well extending toward said top surface, said well having a lateral bounding surface and a bottom bounding surface, said lateral bounding surface being continuous such that said well has a circular shape, said well being centrally positioned on ...

Tool for Surface Finish Machining

A tool ( 1 ) for surface finish machining, having a cushion ( 6 ) made of an elastic plastics foam, on the underside of which there is formed a working medium face ( 2 ) having working media or adhesives ( 8, 11, 12, 13 ) for the releasable attachment of working medium discs and on the top side of which there is formed a drive receptacle ( 4, 5 ) for application of work, is created as a product that is producible easily and non-critically in high volume, is extremely robust in use, is moisture-resistant and is able to withstand high rotational speeds, in that the elastic plastics foam consists of closed-cell expanded and fused-together particles of a thermoplastic elastomer (TPE).

Multi-Functional Debur Tool

A system and method for a composite finishing system. The composite finishing system comprises an abrasive bit with an abrasive material on a removal surface of the abrasive bit, where in the abrasive bit has a pilot structure that positions an abrasive surface relative to an edge break intersection of a hole in a composite structure when a pilot structure is placed into the hole. 1. A composite finishing system comprising:an abrasive bit having an abrasive material on a removal surface of the abrasive bit, wherein the abrasive bit has a pilot structure that positions an abrasive surface relative to an edge break intersection of a hole in a composite structure when the pilot structure is placed into the hole.2. The composite finishing system of claim 1 , wherein the removal surface has a portion that tapers such that the removal surface contacts the edge break intersection of a hole having a feature when the pilot structure is inserted into the hole and moved in a direction along a rotation axis for the abrasive bit and the feature is selected from a group consisting of a chamfer and a fillet relief.3. The composite finishing system of claim 1 , wherein the pilot structure is centrally located about a rotation axis extending through the abrasive bit.4. The composite finishing system of claim 1 , wherein the pilot structure has a diameter sized to a hole diameter for the hole that allows the pilot structure to fit within the hole and position the removal surface such that undesired fibers may be reduced at the edge break intersection.5. The composite finishing system of claim 1 , wherein the abrasive material is selected from at least one of a diamond coating or a flexible diamond coating.6. The composite finishing system of further comprising:an end effector that performs machining operations, wherein the abrasive bit is configured to be connected to the end effector.7. The composite finishing system of further comprising:a robotic machine, wherein the end effector ...

Rotary Tool Sanding and Polishing Attachment

A rotary tool sanding and polishing attachment for sanding and polishing includes a shaft that is elongated and has a plurality of longitudinal faces. A plurality of supports is coupled to and extends outwardly from the shaft. The plurality of supports comprises a pair of closely spaced supports. A drum is coupled to and extends from one of the pair of closely spaced supports to the other of the pair of closely spaced supports, such that a longitudinal gap in the drum is defined by the pair of closely spaced supports. The attachment includes an arm, which is complimentary to a channel that extends from proximate to a second end of the shaft to proximate to the supports, secured via a pivot hole in the shaft and a pivot pin. A wedge, complimentary to the longitudinal gap, is coupled to a second terminus of the arm. 1. A rotary tool sanding and polishing attachment comprising:a shaft, said shaft being elongated with a plurality of longitudinal faces;a plurality of supports, each of said supports being coupled to and extending outwardly from said shaft, said plurality of supports comprising a pair of closely spaced supports;a drum, said drum being coupled to and extending from one of said pair of closely spaced supports to the other of said pair of closely spaced supports, wherein a longitudinal gap in said drum is defined by said pair of closely spaced supports;a channel, said channel extending from proximate to said second end of said shaft to proximate to said supports;a pivot hole, said pivot hole bisecting said channel proximate to said second end of said shaft;an arm, said arm being complimentary to said channel, said arm having a penetration proximate to a first terminus, said penetration being complimentary to said pivot hole;a pivot pin, said pivot pin being complimentary to said pivot hole and said penetration in said arm, wherein said pivot pin is positionable in said pivot hole and said penetration such that said arm is pivotally retained in alignment with ...

Sandpaper with non-slip coating layer

The present disclosure generally relates to abrasive articles for abrading a work surface such as, for example, flexible sheet-like abrasive articles, as well as methods of making and using such abrasive articles. Some embodiments of the abrasive articles include an improved, more heat resistant non-slip coating or layer.

ABRASIVE ROTARY TOOL

The disclosure provides abrasive rotary tools with enhanced adhesion of an abrasive layer. Exemplary abrasive rotary tools include a securing element configured to secure an abrasive layer to an abrasive rotary tool. The securing element may be positioned over a portion of the abrasive layer, such as a tab or end, such that repeated forces on the abrasive layer do not decouple the abrasive layer from the rotary tool. In this way, an abrasive rotary tool may maintain a contact surface integrity through repeated use for extended life of the rotary tool. 1. An abrasive rotary tool , comprising: a shank defining an axis of rotation for the rotary tool; and', 'a three-dimensional core, having an exterior surface, wherein the three-dimensional core is adjacent to the shank;, 'an abrasive assembly holder includingan abrasive layer adjacent to the exterior surface, wherein the abrasive layer includes a contact surface; andat least one securing element positioned over a portion of the abrasive layer, securing the abrasive layer to the abrasive assembly holder.2. The abrasive rotary tool of claim 1 , wherein the three-dimensional core includes at least one side-wall adjacent to the exterior surface and the securing element secures the abrasive layer to the at least one side wall of the three-dimensional core.3. The abrasive rotary tool of claim 1 , wherein at least a portion of the abrasive layer includes tabs.4. The abrasive rotary tool of claim 3 , wherein the securing element is positioned over at least a portion of the tabs.5. The abrasive rotary tool of claim 4 , wherein the securing element is only positioned over at least a portion of the tabs.6. The abrasive rotary tool of claim 1 , wherein the abrasive layer is secured to the three-dimensional core without overlap of the abrasive layer.7. (canceled)8. The abrasive rotary tool of claim 1 , wherein the contact surface of the abrasive layer comprises a plurality of precisely shaped abrasive composites.9. The abrasive ...

Disc for power tools for supporting abrasive material and abrasive disc comprising said support

A disc for power tools for supporting abrasive material includes a relief around the central hole and from the rear part of the disc, in a single body with the body of the disc itself. The relief has a height such as to act as a containment of at least part of the central thread of the hole and/or spacer for the shaft or pin of the power tool.

AUTOMATED SYSTEMS AND PROCESSES FOR PREPARING VEHICLE SURFACES, SUCH AS AN AIRCRAFT FUSELAGE, FOR PAINTING

Processe and system for preparing a vehicle surface (e.g., an aircraft fuselage) for painting include a preparation booth () which is sized and configured to house the vehicle (F). At least one robotic assembly () is reciprocally movable within the preparation booth () relative to a longitudinal axis of the vehicle (F), and is provided with a robotic hand () having at least one abrasive disc (a) attached to an attachment pad () of the robotic hand (), and at least one nozzle () for discharging a stream of rinse fluid. Operation of the at least one robotic assembly () will cause the at least one abrasive disc () of the robot hand () to abrade the surface of the vehicle (F). The robotic hand () may thereafter be maneuvered so that the at least one nozzle () is directed toward the abraded vehicle surface (F). A stream of rinse fluid may then be discharged through the at least one nozzle () and towards the abraded surface of the vehicle (F) so as to rinse the abraded surface of particulate matter. 1. A process for preparing a vehicle surface for painting comprising the steps of:(a) providing a preparation booth which is sized and configured to house the vehicle and having at least one robotic assembly which is reciprocally movable within the preparation booth relative to a longitudinal axis of the vehicle, the robotic assembly comprising a robotic hand having at least one abrasive disc attached to an attachment pad of the robotic hand, and at least one nozzle for discharging a stream of rinse fluid;(b) positioning a vehicle having a surface to be prepared for painting within the preparation booth;(c) operating the at least one robotic assembly to cause the at least one abrasive disc of the robot hand to abrade the surface of the vehicle; and(d) maneuvering the robotic hand so that the at least one nozzle is directed toward the abraded vehicle surface and discharging the stream of rinse fluid through the at least one nozzle and towards the abraded surface of the vehicle ...

Grinding Machine for Robot-Supported Grinding

The invention relates to a grinding machine, which is suitable for a robot-supported grinding process. According to one embodiment, the grinding machine has a housing, a motor arranged in the interior of the housing, a fan wheel arranged on a motor shaft of the motor in the interior of the housing, and a support plate coupled to the motor shaft for receiving a grinding disc. The support plate has openings for intake of grinding dust into the interior of the housing. The grinding machine furthermore has an outlet arranged in a wall of the housing for exhausting the grinding dust out of the interior of the housing and a non-rerun valve arranged in the wall of the housing. The non-return valve enables an to escape from the interior of the housing, but prevents intake of air into the interior of the housing. 115-. (canceled)16. A grinding machine , comprising:a housing;a motor arranged in an interior of the housing;a wheel fan arranged on a motor shaft of the motor in the interior of the housing;a backing pad coupled to the motor shaft, the backing pad configured to receive a grinding disc and having openings for suctioning grinding dust into the interior of the housing;an outlet arranged in a wall of the housing and configured to suction the grinding dust out of the interior of the housing, the outlet being connectable to an extraction system configured to generate a vacuum in the interior of the housing of the grinding machine; anda check valve arranged in the wall of the housing and configured to allow air to escape from the interior of the housing and to prevent air from being suctioned into the interior of the housing.17. The grinding machine of claim 16 , wherein the motor is arranged in the interior of the housing such that the motor is cooled by an air stream that flows from the openings in the backing pad and on to the outlet and with which the grinding dust is extracted.18. The grinding machine of claim 16 , further comprising:an eccentric bearing connecting ...

SURFACING TOOL FOR OPTICAL PURPOSES

A surfacing tool for optical purposes, includes a body () for mounting the tool () on a surfacing machine, an elastically compressible interface (), a flexible buff (), and a connecting structure between the mounting body () and the elastically compressible interface (). The connecting structure includes a bell (), and a supporting body () between the peripheral wall () of the bell () and the periphery of the interface (), the body () for mounting the tool () on a surfacing machine () being connected to the main body () on the side opposite the side facing the interface. 21116171618145053185717111217112220122212201216. The tool as claimed in claim 1 , wherein said connecting structure comprises a bell housing () comprising a main body () and a peripheral wall () projecting from the periphery of said body () and extending as far as a free end (); and said connecting structure comprises a bearing member (; ; ; ; ) between the peripheral wall () of the bell housing () and the periphery of the interface (); said peripheral wall () of the bell housing () being pressed against a part of the lateral surface () and/or of the first transverse surface () of the interface (); at least an annular portion of the lateral surface () of the interface () being free; said first transverse end surface () of the interface () being on the side of and distant from the main body ().3112012. The tool as claimed in claim 2 , further comprising an elastic return member positioned between the bell housing () and the first transverse end surface () of the interface ().4571711. The tool as claimed in claim 3 , wherein the elastic return member is formed by at least a portion () of the peripheral wall () of the bell housing ().5141129171111. The tool as claimed in claim 3 , wherein the elastic return member () is distinct from the bell housing () and is engaged in at least one opening () in the peripheral wall () of the bell housing () in order to mount it on the bell housing () and form said ...

POLISHING ROLL

The present invention provides a polishing roll capable of, for example, realizing three-dimensional polishing of hard materials such as sapphire glass at a high removal amount. The polishing roll is a cylindrical polishing roll capable of rotating about a central axis, characterized in that the polishing roll includes a core part serving as a central axis to which torque is applied, an intermediate part having a cross-section concentric with the core part, and a polishing part disposed on the outer peripheral surface of the intermediate part, and the intermediate part is made of a cushion material that is softer than the polishing part. 1. A cylindrical polishing roll capable of rotating about a central axis , whereinthe polishing roll comprises a core part serving as a central axis to which torque is applied, an intermediate part having a cross-section concentric with the core part, and a polishing part disposed on the outer peripheral surface of the intermediate part, andthe intermediate part is made of a cushion material that is softer than the polishing part.2. The polishing roll according to claim 1 , wherein the polishing part is a nonwoven fabric or a nonwoven fabric impregnated with a resin.3. The polishing roll according to claim 1 , wherein the polishing part is a foamed body or foamed body impregnated with a resin.4. The polishing roll according to according to claim 2 , wherein the resin contains polyurethane.5. The polishing roll according to claim 1 , wherein the polishing part is impregnated with a ceria (cerium oxide) and/or silica (silicon oxide) abrasive.6. The polishing roll according to claim 1 , wherein the polishing part has grooves in the surface thereof.7. The polishing roll according to claim 6 , wherein the grooves include linear parallel grooves and the angle of the grooves relative to the direction of the axis of rotation of the polishing roll is 0 degrees to 90 degrees.8. The polishing roll according to claim 6 , wherein the grooves are ...

Wheel brush and grinding element bundle holder

A wheel brush ( 1 ) includes a grinding element bundle holder ( 3 ) having an annular grinding element bundle-holding surface ( 12 ) that faces the outer circumferential side and a plurality of grinding element bundles ( 4 ) that are formed by gathering a plurality of wire-shaped grinding elements ( 5 ). The grinding element bundle-holding surface ( 12 ) has a plurality of holding holes ( 16 ) arrayed in a circumferential direction (R), the grinding element bundles ( 4 ) protrude to the outer circumferential side from the grinding element bundle-holding surface ( 12 ) while one end portions are inserted into the holding holes ( 16 ). First protrusions ( 18 ) protruding to the outer circumferential direction are provided on first opening edge portions ( 17 a ) adjacent to the holding holes 16 at a first direction (L 1 ) side in the rotational center line direction orthogonal to the circumferential direction R (R) in opening edges of the holding holes ( 16 ) in the grinding element bundle-holding surface ( 12 ). The first protrusions ( 18 ) are continuous in the circumferential direction R (R) to configure an annular first flange portion ( 19 ).

TOOL HAVING A ROTATING PROCESSING UNIT

A tool with a rotating processing unit with tool elements, preferably an abrading or polishing tool, and with a motor including a drive shaft for driving the processing unit is provided. The drive shaft is drivingly connected with a drive plate disposed at right angles to the drive shaft and provided with first connecting device releasably interacting with corresponding second connecting device which are connected with a base plate for the processing unit. The processing unit will thus be driven by the engagement of the first and second connecting device. The tool elements are fixed in the base plate. By this design it is possible for a user to replace the processing unit rapidly and in a simple way without needing to replace the individual tool elements. 1. A tool with rotating processing unit with tool elements , preferably an abrading or polishing tool , and with a motor including a drive shaft for driving the processing unit , wherein the drive shaft is drivingly connected with a drive plate disposed at right angles to the drive shaft , wherein the drive plate is provided with first connecting means releasably interacting with corresponding second connecting means which are connected with a base plate for the processing unit such that the processing unit is driven by engagement of the first and second means , and that the tool elements are fixedly mounted in the base plate.2. The tool according to claim 1 , wherein the first and second connecting means are chosen among hook and loop connections and bayonet connections.3. The tool according to wherein the drive plate and the processing unit are enclosed by a housing which is fixed in relation to the motor and which is provided with a connection for exhausting material removed by the use of the tool elements of the processing unit claim 1 , as the drive plate and the processing unit are provided with openings for passage of the material.4. The tool according to claim 1 , wherein the tool elements of the processing ...

TOOL WITH TOOL ELEMENTS

A tool with tool elements, rotating grinding and/or sanding tool is provided. The tool consists of a tool portion and a mounting portion, which secures the tool elements in the tool. The tool is distinguished in that the tool portion comprises first mount, and the mounting portion includes second corresponding mount for engaging with the first mount. The first and second mount include one or more resilient tabs, each of which is provided with at least one barb, and furthermore the mount comprises one or more recesses. When the tool portion and the mounting portion are assembled, the barbs on the resilient tabs will lock in the recesses of the mounting portion which are designed for this, locking the tool portion and the mounting portion to each other. 1. A tool with tool elements , grinding and/or sanding elements , which tool is designed for mounting on a machining unit with a motor , which rotates the tool via a drive shaft , which tool comprises a mounting portion and a tool portion , where the tool portion comprises grooves to receive the tool elements , where the mounting portion comprises fastener for fastening the tool , directly or indirectly , to the drive shaft , wherein the tool elements are secured in the tool portion , after the tool is assembled by connecting the mounting portion and the tool portion ,whereinthe tool portion comprises a first mount,the mounting portion comprises second corresponding mount for engaging with the first mount, andthe first and second mount comprise one or more resilient tabs, each of which is provided with at least one barb, and the first and second mount furthermore comprise one or more recesses for receiving said barbs with a snap action in the assembled state of the tool for locking of the tool portion and the mounting portion to each other with the tool elements secured in the grooves.2. The tool according to claim 1 , wherein the tool portion has a first inner wall claim 1 , which is directed toward the mounting ...

DEVICE FOR EXCHANGING A POLISHING DISC

A device for exchanging a polishing disc that coated with a polishing agent during operation includes the polishing disc being made from a foam material, foam rubber, felt or lambskin and fastened to a support plate of a polishing tool held on a robot. The device includes an exchanging device having at least one dispenser in which a stack of polishing discs is arranged. The dispenser has a discharge opening, the clear width of which is smaller than the assigned dimension of the polishing disc and larger than the assigned dimension of the support plate. An axially movable sliding device on which the stack rests is provided on the side facing away from the discharge opening. 122-. (canceled)23. A device for exchanging a polishing disc that includes a foam material , foam rubber , felt , or lambskin , is coated with a polishing agent during operation , and is attached to a support plate of a polishing tool held on a robot , the device comprising:an exchanging device having at least one dispenser, in which a stack of polishing discs is arranged, wherein the at least one dispenser has a removal opening, a clear width of the removal opening is larger than an associated dimension of the support plate; andan axially movable sliding device, on which the stack of polishing discs rests, is arranged on a side of the exchanging device that faces away from the removal opening of the at least one dispenser.24. The device of claim 23 , wherein the clear width of the removal opening of the at least one dispenser is smaller than an associated dimension of the polishing disc.25. The device of claim 23 , further comprising:an extractor connected upstream of the exchanging device, wherein the extractor is configured to remove the polishing disc from the support plate.26. The device of claim 25 , wherein the extractor includes a clamping device configured to clamp an edge region of the polishing disc projecting beyond the support plate.27. The device of claim 26 , wherein the clamping ...

BACKING PAD WITH SLOTS FOR SANDING DISKS WITH MULTIPLE HOLES

The present invention relates to a backing pad () with slots for sanding discs with multiple holes, comprising three parts, upper, intermediate and lower, joined together by a fastening system in which the upper part (), with a frustoconical shape, includes suction holes () and a central hole (), characterized in that the intermediate part () comprises suction slots (), a central hole () and in the rear face some suction channels () bordered by upraised walls (); and the lower part (), with a frustoconical shape, and in which the intermediate part () will engage, comprises slots () and a central hole (), and some suction slots () which are arranged in rings, concentric and equidistant between them, and the size of each of the slots () increases from the centre to the periphery. 11278. Backing pad () with slots for sanding discs with multiple holes , comprising three parts , upper , intermediate and lower , joined together by a fastening system in which the upper part () , with a frustoconical shape , includes suction holes () and a central hole () , characterized in that{'b': 3', '5', '8', '6', '10, 'the intermediate part () comprises suction slots (), a central hole (′) and in the rear face some suction channels () bordered by upraised walls ();'}{'b': 4', '3', '5', '8', '11', '11, 'the lower part (), with a frustoconical shape, and in which the intermediate part () will engage, comprises slots () and a central hole (″), and some suction slots () which are arranged in rings, concentric and equidistant between them, and the size of each of the slots () increases from the centre to the periphery.'}249911. Backing pad with slots for sanding discs with multiple holes according to the preceding claim , characterized in that the front face of the lower part () comprises suction grooves () , located at concentric and equidistant rings between them , said grooves () include the slots ().353114. Backing pad with slots for sanding discs with multiple holes according to claim ...

Sanding Pad for a Sander, Such as an Eccentric Sander

The invention relates to a sanding pad for a sander, such as an eccentric sander, which sanding pad includes a disc-shaped body with a rotation axis. The disc-shaped body has a first and second side extending substantially radially from the rotation axis and a third peripheral side extending between the first and second side. The sanding pad includes a coupling arranged on the first side, concentrically with the rotation axis, for coupling to a sander, a disc-shaped flexible plate which is arranged concentrically with the rotation axis and which lies with a first side against the second side of the disc-shaped body, where the disc-shaped flexible plate extends beyond the peripheral side as seen in radial direction; and attaching means for attaching a sanding layer arranged on a second side of the disc-shaped flexible plate opposite the first side of the plate. 1. A sanding pad for a sander , comprising:a disc-shaped body with a rotation axis, wherein the disc-shaped body has a first and second side extending substantially radially from the rotation axis and a third peripheral side extending between the first and second side;a coupling arranged on the first side, concentrically with the rotation axis, for coupling to a sandera disc-shaped flexible plate which is arranged concentrically with the rotation axis and which lies with a first side against the second side of the disc-shaped body, wherein the disc-shaped flexible plate extends beyond the peripheral side as seen in the radial direction; andattaching means for attaching a sanding layer arranged on a second side of the disc-shaped flexible plate opposite the first side of the plate.2. The sanding pad as claimed in claim 1 , wherein the length of the part of the flexible plate which extends beyond the peripheral side as seen in the radial direction is equal to or greater than the distance between the first side and the second side.3. The sanding pad as claimed in claim 1 , wherein the second side transposes ...

GRINDING PACKAGE FITTED ON ROBOTIC ARM

A grinding package fitted on robotic arm includes a main body, a pneumatic motor, a bridging part and a grinding tool. The main body is formed with a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall within the first space, an intake channel, an exhaust channel, openings of the first space and the second space respectively located on each of two parallel sides of the main body, the connecting wall having a ventilation hole. The pneumatic motor includes a motor body within the first space, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole. The bridging part is combined with the main body and the robotic arm, the bridging part closing off the first space, the grinding tool facing the second space and being joined to the transmission shaft. 1. A grinding package fitted on a robotic arm , comprising:a main body forming a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall being provided within the first space and separating the first space into an intake region and a working region, an intake channel communicated to the intake region, an exhaust channel communicated to the working region, openings of the first space and the second space being respectively located on each of two parallel sides of the main body, the connecting wall being provided with a ventilation hole communicating the intake region to the working region;a pneumatic motor including a motor body provided within the working region, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole;a bridging part combined with the main body and the robotic arm, the bridging part closing off the first space, in such a way that a working gas from the intake channel being only discharged from the exhaust channel through the intake region and the ...

ABRASIVE ROLL AND METHOD FOR MANUFACTURING ABRASIVE ROLLER

Object: Provided are an abrasive roll capable of easily improving abrasiveness and a method for manufacturing an abrasive roll. Solution: An abrasive roll () includes a core member () extending in the axial direction and an abrasive part () including a sheet () member of non-woven fabric wound a plurality of times around the core member (), wherein a plurality of perforations () penetrating in the thickness direction of the sheet member () are formed in the sheet member (). 1. An abrasive roll comprising:a core member extending in an axial direction; andan abrasive part including a sheet member of non-woven fabric wound a plurality of times around the core member, whereina plurality of perforations penetrating in a thickness direction of the sheet member are formed in the sheet member.2. The abrasive roll according to claim 1 , whereinthe sheet member is segmented into a plurality of regions extending in a first direction and arranged in a second direction;a boundary extending in the first direction is formed between a pair of the regions;a perforation extending in the first direction is formed at the boundary; anda pair of the regions adjoining in the second direction are mutually connected by a connecting part formed on an end side of the perforation in the first direction.3. The abrasive roll according to claim 2 , whereina plurality of the perforations are formed at the boundary, the perforations being disposed separated from each other in the first direction;a pair of the regions adjoining in the second direction are mutually connected by the connecting part formed between the perforations; andthe connecting part of the boundary formed on one side in the second direction and the connecting part of the boundary formed on the other side, relative to the region, are disposed in different positions in the first direction.4. The abrasive roll according to claim 2 , whereinthe first direction is the axial direction andthe second direction is a winding direction of ...

A backing pad arrangement for an abrading system, and the abrading system

The application relates to a backing pad arrangement suitable for an abrading system. The backing pad arrangement comprises a backing pad (), and an additional layer () or an abrading article () adapted to be attached to the backing pad () with at least one fixing member (), which at least one fixing member () is hollow in its longitudinal direction. The application further relates to the abrading system comprising the backing pad arrangement according to the application. 1. A backing pad arrangement for an abrading system , the backing pad arrangement comprising a backing pad , wherein a lower surface of the backing pad comprises at least one opening , wherein the at least one opening is adapted to receive a fixing member , and the backing pad arrangement further comprises:an additional layer adapted to be attached to the backing pad, which additional layer comprises an upper surface, a lower surface and at least one opening which extends through the additional layer, and the additional layer is attached to the backing pad with at least one fixing member,wherein the at least one fixing member is hollow in its longitudinal direction in order to transport debris with air through the at least one fixing member.2. The backing pad arrangement according to claim 1 , wherein the additional layer is attached to the backing pad with two or more fixing members.3. The backing pad arrangement according to claim 1 , wherein the additional layer is attached to the backing pad with one fixing member arranged in the center of the backing pad.4. The backing pad arrangement according to claim 1 , wherein the fixing member is of screw- claim 1 , snap hook- or expanding type.5. The backing pad arrangement according to claim 1 , wherein the backing pad comprises at least one air inlet conduit for conducting air to an abrading surface.6. The backing pad arrangement according to claim 1 , wherein the additional layer comprises a soft intermediate layer between the upper surface and the ...

GRINDING DEVICE AND GRINDING IMPLEMENT FOR SAID GRINDING DEVICE

A grinding device has a support unit attached to a rotary shaft so as to be rotatable integrally with the rotary shaft, and a grinding element stacked on the support unit and having an uneven grinding surface formed by a plurality of abrasive grains. The support unit has, in a surface thereof, protruding surface portions to be brought into contact with a rear surface of the grinding element when in use, and recessed surface portions recessed from the protruding surface portions, alternately located in a circumferential direction. An engagement mechanism which makes an engagement at each of predetermined angular positions so as to retain the grinding element or the support unit moved by a predetermined angle in the circumferential direction, is provided between the support unit and the grinding element, between the rotary shaft and the grinding element, or between the rotary shaft and the support unit. 1. A grinding device comprising:a support unit attached to a rotary shaft driven by a rotary drive unit, so as to be rotatable integrally with the rotary shaft; anda grinding element stacked on the support unit and having an uneven grinding surface formed by a plurality of abrasive grains, whereinthe support unit has, in a surface thereof, protruding surface portions to be brought into contact with a rear surface of the grinding element when in use, and recessed surface portions recessed from the protruding surface portions, the protruding surface portions and recessed surface portions being alternately located in a circumferential direction, andthe grinding device also comprises an engagement mechanism which makes an engagement at each of predetermined angular positions so as to retain the grinding element or the support unit moved by a predetermined angle in the circumferential direction, the engagement mechanism being located between the support unit and the grinding element, between the rotary shaft and the grinding element, or between the rotary shaft and the ...

SYSTEM AND METHOD FOR GRINDING DISC TOOL

A system and method for a grinding disc, the grinding disc made out of three discs, capable of grinding in three positions such as the bottom, side, and top instead of only one position, the top disc and middle disc having an aperture such that a shaft having a washer and bar is connected to the discs by sliding the through the top disc whereby the washer is then received by the middle disc, the discs are then fastened together with the bar protruding from the discs whereby the bar may be connected to a tool such as drill, the grinding disc may then be used at multiple angles when connected to the tool. 1. A grinding disc system , the system comprising:a top disc having an abrasive top and a second surface, a bottom disc having an abrasive bottom and a second surface, a middle disc having an abrasive edge, and a shaft.2. The grinding disc system of further comprising: the shaft having a bar and a washer.3. The grinding disc system of : the top disc having an aperture claim 2 , the top disc configured to receive the bar through the aperture of the top disc.4. The grinding disc system of : the middle disc having an aperture claim 3 , the aperture of the middle disc configured to receive the washer wherein the washer rests within the aperture of the middle disc.5. The grinding disc system of : the second surface of the bottom disc connected to the middle disc; the second surface of the top disc connected to the middle disc.6. The grinding disc system of : the bottom disc connected to the middle disc by an adhesive claim 5 , the top disc connected to the middle disc by an adhesive.7. The grinding disc system of : the top disc formed from a grinding disc; an attaching button removed from the grinding disc.8. The grinding disc system of : the bottom disc originally formed from a second grinding disc; the attaching button removed from the second grinding disc.9. The grinding disc system of claim 8 , the middle disc formed from a cut off wheel.10. The grinding disc system ...

Hood for Drum Sander

A drum sander having a fin for deflecting airflow around the drum and directing dust and debris to a dust collecting outlet. The fin includes a first section at a first angle and a second section at a second angle that directs air movement generated by the operating drum toward the dust collecting outlet. The free edge of the fin is shaped to wrap partially around the drum in two helical inclined planes. A tool free adjustment of parallelism may be provided. The workpieces are pulled through the sander rather than being pushed through. Lightweight materials reduce stress on the assembly. Heat is dissipated by the configuration and material of the drum. 1. A hood for a workpiece shaping machine having a working element for shaping a workpiece , comprising:a hood partially enclosing the working element of the workpiece shaping machine, the hood defining a dust collecting opening configured for connection to a dust collector, the hood having an interior surface directed toward the working element;a fin extending from the interior surface of the hood toward the working element, the fin being shaped to redirect air moved by operation of the workpiece shaping machine toward the dust collecting opening.2. A hood as claimed in claim 1 , wherein the fin extends along a full length of a working portion of the working element.3. A hood as claimed in claim 1 , wherein the working element is a rotating working element that generates an air flow direction during operation claim 1 , and wherein the fin is disposed at an angle to the air flow direction claim 1 , the angle directing air and entrained dust toward the dust collecting opening.4. A hood as claimed in claim 1 , wherein the working element is a cylindrical working element claim 1 , and wherein the fin includes a free edge lying on a helical inclined plane.5. A hood as claimed in claim 4 , wherein the free edge lying on the helical inclined plane includes a first section of the fin having a free edge lying on a first ...

Method and apparatus for resurfacing anvil blanket of a rotary diecutter for box making machine

A rotary die cuter for a box making machine has an abrading cylinder mounted for rotation alongside the anvil for engaging and resurfacing the blanket of the anvil on a virtually continuous basis to smooth, level and even the surface of the blanket. This resurfacing occurs during normal operation of the rotar y die cutter so no production is lost. The abrading cylinder has a sheet layer of abrasive material spirally wrapped on the surface of the cylinder and bonded thereto with adhesive material on the backside of the sheet layer. The abrading cylinder is movable towards or away from the anvil by a servo motor and gearbox. The position of the abrading cylinder relative to the anvil is determined by an encoder which sends the information to a computer or programmable controller which calculates the changing diameter of the blanket and the amount of speed chan ge that must be imparted to the anvil to compensate for its changing diameter. The computer or programmable controller is connected to a drive system of the anvil to effect the speed change.

Undulated pad conditioner and method of using same

A pad conditioner having an abrasive disk and an undulating disk and methods for using the same. The undulating disk has at least one raised portion and at least one recessed portion. The abrasive disk is releasably affixed to at least a portion of the recessed portion to form an undulated abrasive surface. The undulating disk allows the pad conditioner to be modified for use with multiple processes and for a variety of workpieces.

Abrading apparatus

A back-up pad is provided for supporting an abrasive article during abrading. The back-up pad includes a support portion, such as a polymeric backing, and an engaging portion, such as a loop material, for engaging hooking stems projecting from the abrasive article.

APPLICATION TOOL FOR GRINDING MACHINES

Abrasive articles, rotationally reciprocating tools, and methods

Methods of abrasing surfaces by rotationally reciprocating abrasive surfaces in contact with the surfaces, abrasive articles for use in rotationally reciprocating tools, and methods of removing defects in a surface, where the methods include sanding using a rotationally reciprocating abrasive surface followed by one or more polishing operations are disclosed.

Methods of removing defects in surfaces

Methods of abrading surfaces by rotationally reciprocating abrasive surfaces in contact with the surfaces, abrasive articles for use in rotationally reciprocating tools, and methods of removing defects in a surface, where the methods include sanding using a rotationally reciprocating abrasive surface followed by one or more polishing operations are disclosed.