Rotary Disk Patents (Class 451/548)
  • Patent number: 10710214
    Abstract: A polishing or grinding pad with a multilayer reinforcement is provided. In one aspect, a floor polishing or grinding pad assembly employs a flexible pad, at least two reinforcement layers or rings with different characteristics, and multiple floor-contacting tools such as abrasive disks. In another aspect, a workpiece polishing or grinding pad assembly includes a flexible and rotatable pad, a polymeric reinforcement layer coupled to the pad and a metallic reinforcement layer to which are coupled abrasive tools. In yet another aspect, a floor-facing reinforcement is more flexible than a pad-facing reinforcement which is more rigid.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: July 14, 2020
    Assignee: Husqvarna AB
    Inventor: Tchavdar V. Tchakarov
  • Patent number: 10710558
    Abstract: A cleaning device for cleaning and/or polishing a surface having an aperture, such as a wheel rim contact surface of a motor vehicle or the like, comprises a housing, which has a rear rotary portion for rotating the housing about a rotational axis and a front fastening portion for releasably fastening a cleaning body; the cleaning body comprising a stabilising plate which faces the housing and has a centring pin that faces away from the housing and projects centrically towards the outside, and a cleaning means that covers the surface of the stabilising plate that faces away from the housing; and the fastening portion and the stabilising plate each having a corresponding connecting means for rotationally stable connection to one another.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: July 14, 2020
    Inventor: Michael Mueller
  • Patent number: 10667665
    Abstract: A floor polishing or grinding pad assembly is provided. In one aspect, a polishing or grinding pad assembly employs a fibrous pad, a reinforcement layer or ring, and multiple floor-contacting disks. In another aspect, the reinforcement layer includes a central hole through which the fibrous pad is accessible and the fibrous pad at the hole has a linear dimension greater than a linear dimension of one side of the adjacent reinforcement layer. In yet another aspect, at least one of the floor-contacting disks has an angle offset from that of a base surface of the disk, the fibrous pad and/or the reinforcement layer. A further aspect employs a smaller set of disks alternating between and/or offset from a larger set of the disks. In another aspect, the reinforcement layer includes a wavy or undulating internal edge shape.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: June 2, 2020
    Assignee: HUSQVARNA AB
    Inventor: Tchavdar V. Tchakarov
  • Patent number: 10414012
    Abstract: A workpiece abrading pad apparatus is provided. In one aspect, a grinding pad apparatus employs a flexible pad, a flexible metallic reinforcement layer or ring, and multiple floor-grinding disks. In another aspect, a metallic reinforcement ring includes a central hole through which a fiber or foam pad is accessible. Another aspect employs a spring steel reinforcement ring to which multiple diamond-based abrasive disks or dots are attached. In yet another aspect, at least one floor-contacting disk attached to a reinforcement ring includes sintered powdered metal with diamond particles mixed therein. A further aspect employs abrasive, floor-contacting disks or dots including posts extending from backsides thereof for attachment to a reinforcing ring or layer.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: September 17, 2019
    Assignee: Husqvarna Construction Products North America, Inc.
    Inventor: Tchavdar V. Tchakarov
  • Patent number: 10377016
    Abstract: An abrasive article comprising: a first body comprising a first bond material having abrasive particles contained within the first bond material, wherein the first body comprising the first bond material comprises a ratio of VAG(1)/VBM(1) of at least about 1.3; a second body comprising a second bond material having abrasive particles contained within the second bond material, wherein the second body comprising the second bond material comprises a ratio of VAG(2)/VBM(2) of less than about 1.3, and wherein VAG is a volume percent of abrasive particles within a total volume of the first or second body respectively and VBM is a volume percent of the first or second bond material within the total volume of the first or second body respectively.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: August 13, 2019
    Assignees: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFS
    Inventors: Srinivasan Ramanath, Kenneth A. Saucier, Rachana Upadhyay, Lenny C. Sales, Marc A. Lamoureux, Matthew F. Jacob, Cong Wang
  • Patent number: 10252362
    Abstract: A method for machining a gearwheel by means of stock removal using a numerical-control machine tool with at least five machining axes. Also described are an apparatus for producing commands and a machining system which comprises a machine tool with at least five axes, data input means and calculation and processing and command units.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: April 9, 2019
    Assignee: BRETON SPA
    Inventor: Claudio Saurin
  • Patent number: 10244914
    Abstract: A floor polishing or grinding pad assembly is provided. In one aspect, a polishing or grinding pad assembly employs a fibrous pad, a reinforcement layer or ring, and multiple floor-contacting disks. In another aspect, the reinforcement layer includes a central hole through which the fibrous pad is accessible and the fibrous pad at the hole has a linear dimension (x) greater than a linear dimension (y) of one side of the adjacent reinforcement layer. In yet another aspect, at least one of the floor-contacting disks has an angle (?) offset from that of a base surface of the disk, the fibrous pad and/or the reinforcement layer. A further aspect employs a smaller set of disks alternating between and/or offset from a larger set of the disks. In another aspect, the reinforcement layer includes a wavy or undulating internal edge shape.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: April 2, 2019
    Assignee: Husqvarna Construction Products North America, Inc.
    Inventor: Tchavdar V. Tchakarov
  • Patent number: 10213902
    Abstract: An abrasive article including a body having a bond material comprising an inorganic material, abrasive particles contained within the bond materials; and pores contained within the bond material defining a porosity of at least 90 vol % and not greater than 97 vol % for a total volume of the body.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: February 26, 2019
    Assignees: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFS
    Inventors: Shivshankar Sivasubramanian, Signo T. Reis, Linda S. Bateman, Lisa A. Johnson, Rachana Upadhyay, Srinivasan Ramanath, Ramanujam Vedantham, Taewook Hwang, Andrew L. Biro
  • Patent number: 10195718
    Abstract: An abrasive grinding wheel (20) comprising an annular body (200) defining an abrasive front face (202) at least partly made of a layer of an abrasive mixture (21) and an opposite rear face (203), which grinding wheel (20) comprises an annular damping element (23) made of a resilient yielding material and fixed to the annular body (200), wherein the damping element (23) comprises a first face (231) facing towards the abrasive front face (202) and an opposite free second face (232) which defines at least a portion of the rear face (203) of the annular body (200).
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: February 5, 2019
    Inventor: Paolo Ficai
  • Patent number: 10183374
    Abstract: A buffing module for buffing a substrate is provided. The buffing module comprises a buff table for supporting the substrate, the buff table being rotatable; and a buff head to which a buff pad is attached, being rotatable and movable in a direction of approaching the buff table and a direction of moving away from the buff table. The buff pad includes a first part and a second part arranged so as to surround the first part on an outer side of the first part, the first part and the second part have different characteristics from each other.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: January 22, 2019
    Assignee: EBARA CORPORATION
    Inventors: Kuniaki Yamaguchi, Toshio Mizuno, Itsuki Kobata
  • Patent number: 10112285
    Abstract: Disclosed herein is a grinding wheel including a wheel base to be fixed to a spindle, a plurality of abrasive members fixed to the wheel base, and a plurality of grinding water supply holes for supplying a grinding water to the abrasive members. Each abrasive member is formed as a segment abrasive having an outer surface extending downward from the lower surface of the wheel base so as to be inclined radially outward. The plural abrasive members are arranged annularly at given intervals. The plural grinding water supply holes are formed on the lower surface of the wheel base in the vicinity of the abrasive members so as to each correspond to the abrasive members in the condition where each grinding water supply hole lies on a line connecting the corresponding abrasive member and the axis of rotation of the wheel base.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: October 30, 2018
    Assignee: Disco Corporation
    Inventors: Ryoko Fujiya, Yoshiyasu Nakagawa
  • Patent number: 10016874
    Abstract: A cup grinding wheel includes a cup-shaped carrier, and an annular grinding body. The annular grinding body is connected to the cup-shaped carrier by a single hot-pressing operation, and the annular grinding body is connected only by a binding region having an annular surface to an annular mounting surface of the cup-shaped carrier.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: July 10, 2018
    Assignee: TYROLIT—SCHLEIFMITTELWERKE SWAROVSKI K.G.
    Inventor: Harald Koechl
  • Patent number: 9969054
    Abstract: A grinding tool includes a substrate having a working surface, and a plurality of abrasive particles distributed over the working surface and protruding outward from the working surface, wherein at least some of the abrasive particles are machined to form abrasive particles respectively having an obliquely truncated pyramid shape. Some embodiments described herein also include a method of manufacturing the grinding tool.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: May 15, 2018
    Assignee: Kinik Company
    Inventors: Jui-Lin Chou, Chia-Feng Chiu, Wen-Jen Liao, Xue-Shen Su
  • Patent number: 9931734
    Abstract: The present disclosure provides a carrier disk for holding at least one cutting, grinding or polishing element in a floor grinding machine. The carrier disk comprises a carrier body having a downwardly exposed face, at which the grinding element is arranged, a opening formed in the carrier body and a plurality of flanges extending axially from the carrier body and between the opening and a radially outer edge of the carrier body.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: April 3, 2018
    Assignee: HTC SWEDEN AB
    Inventor: Andreas Fogelberg
  • Patent number: 9925645
    Abstract: Disclosed herein is a grinding tool, which includes a plate, a plurality of holders formed on the plate and having sliding grooves, a shoe coupled to the sliding groove of each of the holders, and grinding tips arranged on the shoe. The shoe includes a fastening part fastened to the sliding groove, and an upper plate part formed on the fastening part and located on an upper surface of the holder outside the sliding groove. The shoe can be fastened to the holder in two or more directions, and the grinding tips can be arranged in two or more forms when viewed from the plane.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: March 27, 2018
    Assignee: EHWA DIAMOND INDUSTRIAL CO., LTD.
    Inventors: Young-Choul Song, Sung-Hoon Chung, Jong-Suk Choi, Jae-Hyun Hong
  • Patent number: 9796066
    Abstract: A method for distributing a coolant to a grinding site of a grinding wheel, including rotating the grinding wheel, injecting the coolant in an inlet of the grinding wheel disposed proximate to an axis of rotation of the grinding wheel, moving the coolant fluid from the inlet along a plurality of internal grooves of the grinding wheel outwardly towards a plurality of outlets, and expelling the coolant outwardly from the plurality of outlets at an angle of at most 15 degrees with respect to a tangent to a circumference of the grinding wheel at the outlet.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: October 24, 2017
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Amr Elfizy, François Perron
  • Patent number: 9669510
    Abstract: There is disclosed a polishing cleaning mechanism configured to be in contact with a rear surface of a substrate which is held in a substrate holding unit for holding the rear surface of the substrate and perform a polishing process and a cleaning process on the rear surface of the substrate, including a cleaning member configured to clean the rear surface of the substrate, a polishing member configured to polish the rear surface of the substrate, and a support member configured to support the polishing member and the cleaning member to face the rear surface of the substrate held in the substrate holding unit, wherein a surface of the polishing member facing the substrate and a surface of the cleaning member facing the substrate differ in relative height from each other.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: June 6, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Akihiro Kubo, Masahiro Fukuda, Taro Yamamoto, Kenji Yada, Masashi Enomoto, Noboru Nakashima
  • Patent number: 9605714
    Abstract: A machining apparatus includes a transfer mechanism portion and a grinding wheel unit. The transfer mechanism portion transfers a tapered roller having a large end face directed outward in a radial direction by causing the tapered roller to revolve about a vertical line while causing the tapered roller to rotate. The grinding wheel unit is substantially C-shaped, and has a grinding wheel surface that comes in sliding contact with the large end face of the transferred tapered roller on an inner peripheral side thereof. The grinding wheel unit has a substantially C-shaped seat fixed to an apparatus main body, and a grinding wheel body that is separate from the seat and is detachably mounted to the seat. The grinding wheel body is substantially C-shaped, and has the grinding wheel surface on an inner peripheral side thereof. The grinding wheel body is constituted by segments disposed along a circumferential direction.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: March 28, 2017
    Assignees: JTEKT CORPORATION, MIZUHO CO., LTD.
    Inventors: Munesato Sakane, Takanori Murakami, Takao Ochi
  • Patent number: 9339914
    Abstract: Embodiments of the present invention are generally directed to a substrate polishing and slurry recycling system. The system includes an extendable gutter that may be positioned to collect processing slurry from the polishing pad during processing and deliver the consumed slurry to a reclamation tank. The reclaimed slurry may be treated and mixed with fresh slurry for delivery to the polishing pad during subsequent substrate polishing. The extendable gutter may be positioned in a second position during rinsing of the polishing pad so that rinsing fluid passes underneath the gutter and is removed from the system without mixing with the reclaimed slurry.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: May 17, 2016
    Assignee: APPLIED MATERIALS, INC.
    Inventor: Simon Yavelberg
  • Patent number: 9333627
    Abstract: Provided is a grindstone tool capable of grinding with high precision and a method for manufacturing same, the grindstone tool having improved chip discharge characteristics to thereby prevent chips clogging of the chip pocket. The grinding tool comprises: dimples (14) formed in the external peripheral surface (13a) of a base metal (11) so that the quantity present in any position in the width direction of the external peripheral surface (13a) is the same in the peripheral direction; a grinding surface (21) formed by affixing a plurality of abrasive grains (22) to the external peripheral surface (13a) using a plating layer (23); and recess parts (24) into which chips produced by the grinding of the abrasive grains (22) are discharged, the recess parts being formed by portions that correspond to the dimples (14) in the grinding surface (21) being recessed.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: May 10, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO., LTD.
    Inventors: Hideaki Arisawa, Toshio Kimura
  • Patent number: 9321184
    Abstract: A blade sharpening system for log saw machines is provided. An example multiphase grinding wheel has a grinding face with one or more abrasive concentric rings for sharpening the cutting blade of the log saw machine, and one or more padded concentric rings consisting of fiber padding. Sharpening with the multiphase grinding wheel improves cut quality, increases blade life, removes glues and varnishes from the cutting blade, reduces blade deformation, and hones the edge of the cutting blade. A pneumatic tensioning system uses air bladders to apply a dynamically cushioned pressure between the grinding wheels and the cutting blade. The fiber-padded grinding wheels and the air bladder tensioner provide improved sharpness of the cutting blade and longer life for the mechanical components. The padded grinding wheels decrease fire risk, and the tensioner can be operated remotely, decreasing human injuries common with conventional setup actions near the sharp cutting blade.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: April 26, 2016
    Inventor: Lawrence E Baker
  • Patent number: 9302369
    Abstract: A grinding wheel including an impeller structure for circulating coolant within the wheel defining a plurality of grooves. An angle between a second wall of each groove and a tangent to the outer circumference adjacent the groove outlet is defined based on the desired coolant flow rate, the predetermined wheel rotational speed, the radius of the outer circumference of the impeller structure, the combined surface area of the groove outlets, and a desired angle of exit of the coolant being at most 15 degrees. Also, a wheel is disclosed where the angle of the second wall of each groove is defined based on the desired coolant flow rate, the combined surface area of the groove outlets, the tangential speed of the wheel, and a value of n being at least 0.9 and less than 1. A method for distributing a coolant to a grinding site is also discussed.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: April 5, 2016
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Amr Elfizy, François Perron
  • Patent number: 9248550
    Abstract: Abrasive articles including a body having a first abrasive layer, a second abrasive layer and one or more reinforcing layers for use with cordless tools have a reduced thickness with respect to conventional counterparts. Techniques for producing and using such abrasive articles are described. In one embodiment, the first abrasive layer and the second abrasive layer comprise abrasive particles in a bond material. In an embodiment, a reinforcing layer is disposed between the first abrasive layer and the second abrasive layer. In a particular embodiment, the body comprises an average thickness of not greater than about 5 mm. In another particular embodiment, the abrasive particles can comprise silicon carbide.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: February 2, 2016
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Taeke Meerveld, Alessandro R. Milani, Marko W Versteegen, Grzegorz Wojciechowski, Karolina Rozanska-Zaworska
  • Patent number: 9180573
    Abstract: A bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder. The ceramic shaped abrasive particles are bounded by a respective base, top and plurality of sides connecting the base and the top. Adjacent sides meet at respective side edges having an average radius of curvature of less than 50 micrometers.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: November 10, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Maiken Givot, Mark G. Schwabel
  • Patent number: 9120195
    Abstract: The present invention provides an apparatus and a method for manufacturing a wheel hub to reduce lateral run-out. Specifically, the present invention provides an apparatus and a method for machining the inner and outer surfaces of the wheel hub after the wheel bolts and bearing have been attached to the wheel hub. A grind wheel is used to finish an inner flange portion and outer flange portion of the wheel hub.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: September 1, 2015
    Assignee: DIVERSIFIED MACHINE, INC.
    Inventor: Robert Veldman
  • Patent number: 9120194
    Abstract: A grinding wheel comprises an outer base with a first attached grain pad; and an inner frame with a second attached grain pad; and a spindle axis shared by the outer base and the inner frame, wherein at least one of the outer base and the inner frame can move independently along the shared spindle axis; and wherein the outer base, the inner frame, and the shared spindle axis all have a same center. A grinding system comprises an above said grinding wheel, and a wheel head attached to the shared spindle axis, capable of moving vertically, in addition to a motor driving the grinding wheel to spin; and a chuck table for fixing a wafer on top of the chuck table; wherein the grinding wheel overlaps a portion of the chuck table, each capable of spinning to the opposite direction of another.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: September 1, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kuo-Hsiu Wei, Kei-Wei Chen, Ying-Lang Wang, Chun-Ting Kuo
  • Patent number: 9089943
    Abstract: A composite pad includes an outer pad portion having a surface with a firmness, stiffness or abrasiveness, and an inner pad portion disposed on or in the outer pad portion, the inner pad portion having a surface with a firmness, stiffness or abrasiveness which is greater than that of the outer pad surface. The backside of the composite pad preferably includes a hook-and-loop or other mechanism for attachment to a tool such as an orbital polisher. The inner portion may used to remove larger scratches left from sand paper (or other abrasives) then, without removing the pad, the polisher tool may be tilted relative to the surface enabling the outer portion to buff the area and remove any swirl marks. The surface of the inner pad may be raised relative to the surface of the outer pad, flush or recessed. In the preferred embodiments the various pad portions are made of foam material such as polyurethane.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: July 28, 2015
    Inventor: Ronald Lipson
  • Patent number: 9067298
    Abstract: Polishing pads with grooved foundation layers and polishing surface layers are described. In an example, a polishing pad for polishing a substrate includes a foundation layer having a pattern of grooves disposed therein. A continuous polishing surface layer is attached to the pattern of grooves of the foundation layer. In another example, a polishing pad for polishing a substrate includes a foundation layer with a surface having a pattern of protrusions disposed thereon. Each protrusion has a top surface and sidewalls. A non-continuous polishing surface layer is attached to the foundation layer and includes discrete portions. Each discrete portion is attached to the top surface of a corresponding one of the protrusions of the foundation layer. Methods of fabricating polishing pads with a polishing surface layer bonded to a grooved foundation layer are also described.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: June 30, 2015
    Assignee: NexPlanar Corporation
    Inventors: Paul Andre Lefevre, William C. Allison, Diane Scott, James P. LaCasse
  • Patent number: 9050708
    Abstract: A grinding wheel assembly has a support disk centered on an axis and having an outer edge and a pair of axially opposite faces. An annular abrasive ring is juxtaposed with the outer edge, and a flexible hinge formation joins the ring to the outer edge of the disk at one of the faces. An actuator body of controlledly radially variable dimension joins the ring to outer edge of the disk at the other of the faces for deforming the ring and flexing the hinge formation so as to vary a shape of an outer face of the ring radially of the axis. Thus with this system the exact shape of the outer face of the abrasive ring can be controlled remotely. The control can be very accurate, and can be monitored by sensors in a feedback system to ensure exact position of the outer ring surface.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: June 9, 2015
    Assignee: EMAG HOLDING GMBH
    Inventor: Roland Schmitz
  • Patent number: 9050706
    Abstract: A segmented profiled wheel for grinding a glass or non-metallic workpiece including a segmented abrasive portion formed of a plurality of abrasive segments that are attached to a core of the wheel and method for making same. The plurality of abrasive segments have a cutting surface profile and sufficient abrasive grit to contour and grind the workpiece. Terminal ends of the plurality of abrasive segments are adjacent to one another and the cutting surface profiles align to form a substantially continuous rim of profiled abrasive segments for substantially continuous contact with a workpiece while the wheel rotates. The method includes the steps of forming the plurality of abrasive segments having a metal bonding matrix using automated processes, machining a metal blank to form a core, and attaching the plurality of abrasive segments to the core by laser welding and/or brazing.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: June 9, 2015
    Assignee: Inland Diamond Products Company
    Inventors: Ronald Wiand, Bruce C. Baker
  • Patent number: 9039496
    Abstract: A grinding disk in particular for rotary fine machining of surfaces has a support plate and a drive connector connecting the grinding disk to a rotary drive machine. The drive connector is provided at a top side of the support plate. An elastically deformable cushion is disposed at a bottom side of the support plate. The cushion is covered with a working medium or with an adhesive coating for detachable attachment of a working medium disk. A cover is disposed on the support plate so as to define an axial intermediate spacing, wherein the cover is embodied as a mechanically loadable structural part and is connected fixedly at least to an outer rim of the support plate. Primarily radially extending ribs are disposed between the support plate and the cover and connected at least at some locations with the support plate and the cover.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: May 26, 2015
    Assignee: Kolthoff Gabrovo EOOD
    Inventor: Dieter Kolthoff
  • Patent number: 9039495
    Abstract: Methods and apparatus for making and using tools, for example concrete cutting blades. The tool includes a first layer and second layer that are oppositely disposed. The first and second layers include working surfaces that support at least one working element when the working element is applied to a work piece. Additionally, an intermediate structure is included between the first and second layers. The intermediate structure can include a plurality of components extending in the area between the structural surfaces and the working surfaces.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: May 26, 2015
    Assignee: HUSQVARNA AB
    Inventor: Anthony Baratta
  • Patent number: 9011206
    Abstract: The super abrasive wheel includes a core rotating around a rotation axis and a super abrasive layer bonded to the core. The core has a first surface and a second surface located opposite to the first surface. An annular first protrusion portion protruding in the direction away from the first surface is provided at a portion of the second surface that is surrounded with the super abrasive layer. A reference surface is provided in the second surface on the inside of the first protrusion portion. The height from the reference surface to the first protrusion portion is denoted as A. A top portion having the height B from the reference surface is provided at a portion of the second surface between the first protrusion portion and the super abrasive layer. The height B is greater than the height A.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: April 21, 2015
    Assignee: A.L.M.T. Corp.
    Inventors: Tomohiro Ishizu, Yukio Okanishi, Teruyuki Kumazawa
  • Publication number: 20150099440
    Abstract: A method for manufacturing a polishing pad for a hand tool having a working element performing an orbital, random orbital, and/or a rotational movement, the polishing pad having attached layers including: a resilient damping layer, an adhesive layer for connection to a corresponding layer located at a bottom surface of the working element, and a polishing layer including microfiber for polishing a surface of a work piece. The method includes the steps of: providing a casting mold having a recess corresponding to form of the polishing pad and a lid for closing the recess; placing the adhesive layer into the recess; pouring the resilient material for the damping layer into the recess on top of the adhesive layer; placing the polishing layer on the resilient material; closing the recess with the lid; and manufacturing the polishing pad under external heat supply until the resilient material is cured.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 9, 2015
    Inventor: Guido Valentini
  • Patent number: 8979618
    Abstract: A polishing tool for processing an optical surface of a spectacle lens, having a carrier body and a polishing film, an elastic layer being arranged between said polishing film and said carrier body. Further, there is provision for a surface of said polishing film, which surface is active during processing, to decrease in size in an edge region of said polishing film outwards in said radial direction. Furthermore, an apparatus is provided for polishing an optical surface of a spectacle lens having a polishing tool as described above.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: March 17, 2015
    Assignee: Carl Zeiss Vision GmbH
    Inventors: Gerd Nowak, Michael Zaiser
  • Patent number: 8974270
    Abstract: CMP pad dressers having leveled tips and associated methods are provided. In one aspect, for example, a CMP pad dresser can include a matrix layer and a monolayer of a plurality of superabrasive particles embedded in the matrix layer, where each superabrasive particle in the monolayer protrudes from the matrix layer. The difference in the protrusion distance between the highest protruding tip and the next highest protruding tip of the monolayer of superabrasive particles is less than or equal to about 20 microns, and the difference in protrusion distance between the highest 1% of the protruding tips of the monolayer of superabrasive particles are within about 80 microns or less.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: March 10, 2015
    Inventor: Chien-Min Sung
  • Publication number: 20150053526
    Abstract: A curvic coupling for rotational coupling is provided herein. The curvic coupling includes: plural teeth arranged in a circle and protruding from a circle plane extending in a radial direction and a circumferential direction, wherein a side surface of a tooth of the plural teeth is opposite to a side surface of another tooth of the plural teeth, and wherein the tooth is adjacent to the other tooth and is separated from the other tooth by a separating surface. The separating surface includes a flat surface lying in the circle plane, wherein the separating surface includes a central protrusion between the side surface of the tooth and the side surface of the other tooth, and wherein the protrusion protrudes from the circle plane.
    Type: Application
    Filed: January 30, 2013
    Publication date: February 26, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventors: Adrian Brathwaite, Shane Butler
  • Publication number: 20140377505
    Abstract: A tool head capable of introducing deep recesses into hard and brittle material such as glass and glass ceramics is provided. The tool head includes a hollow cylindrical abrasive body merging into a hollow shank. The hollow cylindrical abrasive body has an end face with a central abrasive area at the location of a cylinder axis. The central abrasive area is connected with the inner wall surface of the hollow cylindrical abrasive body by at least one web. The end face of the abrasive body, the web, and at least a portion of the outer wall surface of the abrasive body are covered with abrasive. The hollow shank has at least one opening to the interior between the at least one web and the inner wall surface of the abrasive body.
    Type: Application
    Filed: June 25, 2014
    Publication date: December 25, 2014
    Inventors: Stefan Mischke, Thomas Werner, Marco Weisenburger
  • Patent number: 8905823
    Abstract: An abrasive tool for conditioning CMP pads includes abrasive grains coupled to a substrate through a metal bond and a coating, e.g., a fluorine-doped nanocomposite coating. The abrasive grains can be arranged in a self-avoiding random distribution. In one implementation, an abrasive tool includes a coated plate and a coated abrasive article that has two abrading surfaces. Other implementations related to a process for producing an abrasive tool that includes a coating at one or more of its surfaces. Also described are methods for dressing a CMP pad.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: December 9, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Jianhui Wu, Taewook Hwang, Ramanujam Vedantham, Charles Dinh-Ngoc, Thomas K. Puthanangady, Eric M. Schulz, Srinivasan Ramanath
  • Patent number: 8894472
    Abstract: A tool for machining parts and particularly surfaces of parts includes a machining head and a main, supporting body (3) made of carbon fibers bonded by a polymer binder and additionally contains polyhedral multilayer carbon nanostructures of the fulleroid type having e.g. a layer-to-layer distance of 0.34-0.36 nm, taken in a quantity of 0.05-50 wt % of the mass of the polymer binder. The main body thereby obtains an increased stiffness and strength.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: November 25, 2014
    Assignee: Virtum I Sverige AB
    Inventors: Olga Meza, Andrey Ponomarev
  • Patent number: 8894471
    Abstract: An optical-grade surfacing tool (101) is provided with a resilient return element (115) including a plurality of resiliently flexible strips (118) that transversely project from a rigid central mounting (104), each strip (118) having a distal portion (144) that engages by bearing directly upon a petal (134) of a flexible flange (131) that surrounds the rigid mounting (104). The distal portion is curved along a round loop such that the end (145) of each the strip (118) is rotated toward the rigid mounting (104).
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 25, 2014
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Alain Batard, Jean-Etienne Lepage
  • Patent number: 8845400
    Abstract: An inexpensive rotary grinding tool with reduced noise level of the grinding is provided. The rotary grinding tool comprises a metal disk having a grinding surface on at least a part of its surface and a holder for supporting the metal disk. The grinding surface has hard grains having a Mohs hardness in excess of 9 brazed thereon at a surface density of at least 20 grains/cm2. The holder has at its center a securing means for securing the holder on rotary shaft of a rotary drive unit. The holder and the metal disk are joined together to constitute the rotary grinding tool.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: September 30, 2014
    Assignees: Nippon Steel & Sumikin Anti-Corrosion Co., Ltd., Dai Nippon Toryo Co., Ltd
    Inventors: Atsumi Imai, Takehide Aiga, Masanori Nagai, Takayuki Sato, Kenji Fujimoto, Tsuyoshi Matsumoto, Hiroshi Kihira
  • Publication number: 20140256238
    Abstract: A composite abrasive wheel comprises primary and secondary abrasive portions. The primary abrasive portion comprises shaped ceramic abrasive particles retained in a first organic binder. The secondary abrasive portion is bonded to the primary abrasive portion, and comprises secondary crushed abrasive particles retained in a second organic binder. The primary abrasive portion comprises a larger volume percentage of the shaped ceramic abrasive particles than the secondary abrasive portion. A central aperture extends through the composite abrasive wheel.
    Type: Application
    Filed: November 6, 2012
    Publication date: September 11, 2014
    Applicant: 3M Innovative Properties Company
    Inventors: Loc X. Van, Thu A. Nguyen
  • Publication number: 20140242894
    Abstract: Provided are: a polishing pad which is capable of alleviating a scratch problem that occurs when a conventional hard (dry) polishing pad is used, and which is excellent in polishing rate and polishing uniformity and is usable not only for primary polishing but also for finish polishing; and a method for producing the polishing pad. The polishing pad is for polishing a semiconductor device and includes a polishing layer having a polyurethane-polyurea resin molded body containing cells of a substantially spherical shape. The polyurethane-polyurea resin molded body has a ratio of closed cells of 60 to 98%. The polyurethane-polyurea resin molded body has a ratio tan ? of a loss modulus E? to a storage modulus E? (loss modulus/storage modulus) of 0.15 to 0.30. The storage modulus E? is 1 to 100 MPa. The polyurethane-polyurea resin molded body has a density D of 0.4 to 0.8 g/cm3.
    Type: Application
    Filed: October 12, 2012
    Publication date: August 28, 2014
    Inventors: Kouki Itoyama, Fumio Miyazawa
  • Patent number: 8784767
    Abstract: Polycrystalline diamond includes cubic diamond and hexagonal diamond, and a ratio of X-ray diffraction peak intensity of a (100) plane of the hexagonal diamond to X-ray diffraction peak intensity for a (111) plane of cubic diamond is not lower than 0.01%. In addition, a present method of manufacturing polycrystalline diamond includes the steps of preparing a non-diamond carbon material having a degree of graphitization not higher than 0.58 and directly converting the non-diamond carbon material to cubic diamond and hexagonal diamond and sintering the non-diamond carbon material, without adding any of a sintering agent and a binder, under pressure and temperature conditions at which diamond is thermodynamically stable.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: July 22, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hitoshi Sumiya, Katsuko Yamamoto, Takeshi Sato, Keiko Arimoto
  • Patent number: 8777699
    Abstract: Superabrasive tools and methods for making and using the same are provided. In one aspect, for example, a CMP pad dresser includes a first monolayer of superabrasive particles disposed on and coupled to one side of a metal support layer and a second monolayer of superabrasive particles disposed on and coupled to the metal support layer on an opposite side from the first monolayer. The superabrasive particles of the second monolayer are positioned to have substantially the same distribution as the superabrasive particles of the first monolayer.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: July 15, 2014
    Assignee: RiteDia Corporation
    Inventor: Chien-Min Sung
  • Patent number: 8747798
    Abstract: Polycrystalline diamond includes cubic diamond and hexagonal diamond, and a ratio of X-ray diffraction peak intensity of a (100) plane of the hexagonal diamond to X-ray diffraction peak intensity for a (111) plane of cubic diamond is not lower than 0.01%. In addition, a present method of manufacturing polycrystalline diamond includes the steps of preparing a non-diamond carbon material having a degree of graphitization not higher than 0.58 and directly converting the non-diamond carbon material to cubic diamond and hexagonal diamond and sintering the non-diamond carbon material, without adding any of a sintering agent and a binder, under pressure and temperature conditions at which diamond is thermodynamically stable.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: June 10, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hitoshi Sumiya, Katsuko Yamamoto, Takeshi Sato, Keiko Arimoto
  • Publication number: 20140154961
    Abstract: A multi-abrasive tool is constituted by a support on which abrasive elements are present. Such abrasive elements are arranged in a manner so as to form one or more paths along which the successive abrasive elements have grain size sequentially increasing or decreasing by an arbitrary quantity when passing from on element to the next. Such principle gives rise to abrasive tools with different conformation both for polishing machines and for grindstones. For roto-orbital and planetary polishing machines, and optionally orbital, such support is circular and the grain sequence is circumferential, or radial, or in both directions. A first tool is constituted by contiguous (or non-contiguous) circular rings, that are differently abrasive. A second tool comprises differently abrasive elements arranged along the circular peripheral edge. A third tool comprises differently abrasive elements arranged along a spiral path of 360° starting from the edge.
    Type: Application
    Filed: July 7, 2011
    Publication date: June 5, 2014
    Applicant: REN S.r.l.
    Inventor: Nicola Fiore
  • Patent number: 8740675
    Abstract: The invention relates to a method of making a grinding disk, comprising the steps of: providing a cap; providing an abrasive part; placing the cap on the abrasive part to form an assembly; holding the assembly and injecting a molding material into a space between the cap and the abrasive part and into the abrasive part to bond the cap and the abrasive part. A grinding disk made by the method is also disclosed.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: June 3, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Yu-Lung Wu, Yang-Wen Lee, Ming-Tien Chang
  • Publication number: 20140087640
    Abstract: A superhard construction comprises a substrate and an ultra hard material layer formed over the substrate. One of the interface surface of the substrate or the interface surface of the ultra hard material layer comprises a plurality of spaced-apart projections arranged to project from the interface surface, the interface surface between the spaced-apart projections being uneven. A further superhard construction comprises a plurality of projections arranged to project from the interface surface which abut one or more adjacent projections along an edge thereof on the surface from which the projections project, and extend over all or a majority of the interface surface.
    Type: Application
    Filed: April 25, 2012
    Publication date: March 27, 2014
    Applicants: BAKER HUGHES INCORPORATED, ELEMENT SIX LIMITED
    Inventors: Konstantin Evgenievich Morozov, Anthony Albert DiGiovanni