Disk Or Wheel Abrader Patents (Class 451/258)
  • Patent number: 8602841
    Abstract: A form tap includes a shank having a shank length and a thread portion that extends along at least a portion of the shank length. The thread portion includes a finishing portion and a chamfer portion. Each of the finishing portion and the chamfer portion include a plurality of threads and each thread has a crest and a root. The plurality of threads of both the finishing portion and the chamfer portion are spaced apart at a constant pitch, such that a crest-to-crest distance between adjacent threads remains constant along the entire thread portion.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: December 10, 2013
    Inventor: Harry Leroy Ellis
  • Patent number: 7971356
    Abstract: The invention relates to a method for contour grinding wide blades at high speed, according to which a wheel (1) is used the grinding contour of which has a width dimension that is less than the width of the tip of the blades to be ground, said contour being defined by a straight area followed by an arched area at one end, with the straight area of which a straight grinding is carried out to deburr the tip of the blades, whereas with the arched area the contour grinding is carried out by the interpolation of axes.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: July 5, 2011
    Assignee: Danobat, S.Coop.
    Inventors: Xabier Orobengoa Ortubay, Harvinder Sigh Chana
  • Publication number: 20080311827
    Abstract: A chamfering apparatus for chamfering an outer periphery of a disk-shaped substrate includes a grinding member having a circular hole inside thereof, wherein the hole has a diameter larger than an outer diameter of the substrate. An inner periphery of the grinding member forming the hole is a grinding surface and grinds the outer periphery of the substrate.
    Type: Application
    Filed: May 5, 2008
    Publication date: December 18, 2008
    Inventors: Yoshihiko Tanaka, Norihiko Nakajima, Shinichiro Nishimaki
  • Patent number: 7431633
    Abstract: To provide a plating removing apparatus for 3-piece wheels, which can easily and neatly remove plating at the welding planned portion of the superimposed part of the inner rim and the outer rim. A plating removing apparatus that removes plating of a welding planned portion R in a three-piece wheel having the inner rim 2B, the outer rim 2A, and a disk, comprises a support means 11 that rotatably supports the outer rim 2A, at least three holding rollers 34 that hold the rim supported by the support means 11 from the outer circumferential side, a rotation drive means 67 that rotates and drives the outer rim 2A held by the holding rollers 34, and a grinding means that grinds the welding planned portion R on the outer circumferential surface of the rim 2A by an abrasive cloth/paper 13 and removes plating the welding planned portion R.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: October 7, 2008
    Assignee: Work Co., Ltd.
    Inventor: Takeshi Tanaka
  • Patent number: 7422514
    Abstract: A dental crown polishing apparatus has a motor, a ball bearing assembly around a shaft of the motor and having balls rotating and circularly moving around the motor shaft by receiving torque from the motor shaft, a brush assembly on the periphery of the ball bearing assembly, equipped with brushes contacting the ball to rotate and having bristles in the same direction as an axial direction of rotation and a tray opposite and open to the brush assembly to dispose a crown toward the brushes. The motor shaft is offset from the center of the brush assembly. The brush assembly moves in an orbital fashion by the rotation of the motor. The tray rotates separately from the brush assembly. The rotation of the tray is not synchronous with the rotation of the brush assembly. Dental crown polishing is achieved by the orbital movement of the brushes.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: September 9, 2008
    Inventor: Timothy Tamio Nemoto
  • Patent number: 7226344
    Abstract: A method of processing an antifriction bearing unit for a wheel, the antifriction bearing unit including an outer race, an inner race, a plurality of rolling elements and a flange portion for directly or indirectly mounting a brake disk provided to one of the outer and inner races, the method includes: assembling the outer and inner races and the rolling element together; after assembling, placing the one of the outer and inner race in position incapably of circumferential rotation; grinding the flange portion by bring the flange portion into contact with a grindstone which is rotated while the other of the outer and inner race is left free.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: June 5, 2007
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Takeshi Fukao, Toshihiro Nakano
  • Patent number: 7101268
    Abstract: Disclosed is a grinding table apparatus for a liquid crystal display panel and a grinder using the adapt to various sizes of unit liquid crystal display panels for grinding edges of the corresponding liquid crystal display panel by adjusting a variable moving distance of the grinding tables instead of replacing the previous grinding table. The present invention includes at least two grinding tables displaced in a direction making the grinding tables get farther from or closer to each other to adapt to the size of the unit liquid crystal display panel to grind edges of the unit liquid crystal display panel.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: September 5, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Sang-Sun Shin
  • Patent number: 6881130
    Abstract: A method of positioning a grooved grinding wheel relative to a disc-like circular workpiece for edge grinding the workpiece using the groove in the wheel includes the steps of mounting the workpiece for rotation about a first axis, mounting the grinding wheel for rotation about a second parallel axis, effecting relative movement between the workpiece and the wheel to engage the rim of the wheel within the groove and performing a preliminary grind. The position of the wheel is axially adjusted in accordance with the measurements made on the profile of the rim produced by the preliminary grind, and the rim is ground again with a second preliminary grind with the grinding wheel located at the axially shifted position. The steps of grinding and measuring the periphery of the workpiece are repeated until the rim profile possesses the desired accuracy. The final position of the grooved grinding wheel is then utilized for grinding future wafers.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: April 19, 2005
    Assignee: UNOVA U.K. Limited
    Inventor: Mark Andrew Stocker
  • Patent number: 6875080
    Abstract: A method for directional force correction of pneumatic tires that simultaneously corrects radial and tangential force exerted by the tire. The method allows for the correction of tangential force regardless of the rotational direction of the tire. This invention accomplishes this end through an improved force correction technique, wherein at least two rotary grinders are employed. In the inventive method, the rotational direction of one grinder is reversed in relation to the rotational direction of the other grinder(s). Therefore, at least one grinder will engage the tire in an “up-grinding” manner, and at least one grinder will engage the tire in a “down-grinding” manner. The result is that across the width of the tire's tread surface, some tread blocks will have a “heel-to-toe” appearance, while others will appear “toe-to-heel.” The effect is that, no matter what direction the tire is rotating while in use on an automobile, tangential force variation has been reduced.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: April 5, 2005
    Assignee: Continental Tire North America, Inc.
    Inventors: George E. Gast, Jr., Kenneth J. Gormish, Gary Paul Zolton, Henry Buel Edwards, II
  • Patent number: 6431951
    Abstract: Upper and lower working rolls 2a, 2b are ground while moving respective grindstone devices 3a, 3b in reverse directions, whereby the region of grinding for the upper working roll 2a and that for the lower working roll 2b are maintained in symmetry with respect to the center of rolls, one on the operating side and the other on the driving side. By this arrangement, it is possible to equalize the coefficients of friction on the operating side and the driving side, and to prevent meandering of the rolling stock 6 as well as drawing (squeezing) or bad product shape due to the meandering from occurring. The timings to start grinding by the grindstone devices 3a, 3b are set to be substantially the same, and the velocities of movement of the grindstone devices 3a, 3b in the axial direction of the working rolls are set to be equal, whereby the difference in frictional coefficient due to grinding in the longitudinal direction of the rolls can stably be kept small.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: August 13, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuru Onose, Shigeru Mori
  • Patent number: 6358123
    Abstract: A honing head for microburnishing surface of a recording/reproducing disc to a smoothness at which asperities are limited to submicron heights including a hardened contact bearing surface having an array of depressions with abrupt trailing edges interconnected by recessed channels leading outwardly from the honing head. The array of channels span a band in which an asperity may be present, and the sharp edges shear off the asperities within the band which extend above the chosen submicroinch height, with the separated particulates being passed through the recesses and channel system to the outer edge of the honing head. The trailing edges act to shear off the unwanted heights of the asperities, while the recesses enable pressure differentials and air flows to direct the separated particulates outwardly relative to the disc, centripetal forces of rotation bearing the particulates from the disc.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 19, 2002
    Assignee: Seagate Technology LLC
    Inventors: William O. Liners, Mark J. Schaenzer
  • Patent number: 6347977
    Abstract: A system for chemical mechanical polishing, and a method of chemical mechanical polishing and the preparation of wafer surfaces is provided. The preparation can either be a polishing operation or a buffing operation. The chemical mechanical polishing system includes a carrier to hold and rotate a wafer. The wafer has a surface area and is held by the carrier so that the surface area of the wafer to be processed is exposed. The system further includes a roller that has a process surface. The roller is configured to rotate about an axis, and the rotating process surface of the roller is applied with force against the rotating wafer surface defining a contact region on the wafer. The area of the contact region is less than the surface area of the wafer. The contact region is moved between a first region of the wafer and a second region of the wafer during the processing of the wafer, and the force and linear velocity are manipulated to control a rate of removal.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: February 19, 2002
    Assignee: Lam Research Corporation
    Inventor: David T. Frost
  • Patent number: 6257964
    Abstract: A roll grinding system includes a roll with a pair of longitudinally opposite ends, a longitudinal axis extending between the ends, and an outer surface. A material removal tool is movable in a travel path along a length of the roll. The material removal tool has a generally flat working surface oriented generally parallel to the travel path. A longitudinal displacement drive is connected with the material removal tool for moving the material removal tool along the travel path. A pair of supports are respectively positioned at and rotatably carry a corresponding end of the roll. At least one transverse displacement drive is provided, with each transverse displacement drive being connected with a corresponding support and configured to move the corresponding support in directions generally toward and away from the longitudinal axis.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: July 10, 2001
    Assignee: Voith Sulzer Paper Technology North America, Inc.
    Inventor: Dale E. Helgren
  • Patent number: 6257956
    Abstract: Method to identify and remove machine contributions from tire uniformity measurements made on a tire uniformity machine by averaging one or more measurements of tire uniformity from a single test tire to calculate an average machine contribution signal, and then subtracting the average machine contribution signal from a tire uniformity measurement signal for a production tire to provide a corrected tire uniformity measurement for the production tire.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: July 10, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gregory David Shteinhauz, Yiu Wah Luk
  • Patent number: 6139401
    Abstract: A method for correcting the balance of a pneumatic tire mounted in a tire uniformity machine modified for balance screening such tires. After balance screening of the tires, tires which are unacceptably imbalanced are maintained at the second rotational speed of the balance screening routine. A grinding wheel is brought to the position of maximum radial and/or lateral deflection causing tire material to be removed from deflected portions of the tire. The tire is once again balance checked and if the balance is still unacceptable, the grinder is advanced an incremental unit of distance toward the center of the tire, more tire material is removed, and the balance is again checked. The steps of advancing the grinder, removing material, and checking the tire imbalance are performed until the tire is found to have acceptable static and couple imbalance.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: October 31, 2000
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: William Frank Dunn, John Michael Maloney, George Jeffrey Lipczynski
  • Patent number: 5964652
    Abstract: An apparatus for the chemical-mechanical polishing of wafers has a rotating disk provided with a polishing body, a supply device for a polishing fluid and a holding device for the wafer. An axis of the disk runs parallel to the surface of the wafer. A cylindrical edge surface of the disk is provided with the polishing body in such a way that a trench with a specific cross section can be made in the wafer.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: October 12, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hanno Melzner, Hermann Wendt
  • Patent number: 5853318
    Abstract: A roll surface grinder includes a frame mounted on a carriage assembly for traversing movement between opposite sides of the frame in a direction parallel to the axis of the roll subject to grinding. The carriage assembly includes a linear drive system for controlling the transverse back-and-forth motion and speed of the carriage assembly along the frame during grinding. The carriage assembly includes a swing arm pivotally mounted on the frame and pivotal relative to the carriage assembly. The pivot angle of the swing arm relative to the carriage assembly can be adjusted manually to adjust the depth of the grinding.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: December 29, 1998
    Assignee: Consolidated Process Machinery, Inc.
    Inventors: Kelsey C. Thom, Heath L. Hartwig
  • Patent number: 5587185
    Abstract: An automated system for handling concrete pipe and for handling and cleaning the components used in the manufacture of the pipe. Once concrete pipe has cured, the system automatically removes the bell and spigot forming rings from the pipe, and cleans and oils them for reuse. At the ring removal station, the pipe is properly positioned and oriented and the rings are pulled from each end of the pipe and transported to cleaning and oiling stations where all critical surfaces of the rings are cleaned by pulverizing, chiseling and brushing the concrete residue from the rings which are then coated with oil. The automated system is designed to handle rings of different sizes without any intervention by an operator, and the system will handle rings of different diameters that are intermixed.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: December 24, 1996
    Assignee: Hawkeye Concrete Products Co.
    Inventors: Hartzell H. Schmidgall, Jon A. Schmidgall
  • Patent number: 5511913
    Abstract: In a wheelset processing operation, in which non-positive driving of the wheelset (1,1') is effected, the processing tools (2,2') act on the wheelset (1,1') at the same time in different directions such that the tangential components (3,3') of the tool forces are substantially compensated. This enables the wheelset processing time to be reduced and enables the machining accuracy to be improved.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: April 30, 1996
    Assignee: Niles-Simmons Industrieanlagen GmbH
    Inventor: Hans J. Naumann
  • Patent number: 5466182
    Abstract: A machine for scraping tires and the like comprising means of handling (6, 106) and actuation (4, 104) of a tire (7) made integral with a frame (1) according to a horizontal axis, constituting the axis of rotation of tire (7) and of a work tool (11), and a device (8) for lifting the tire, one (6) of such means of handling being capable of being operated in rotation but fixed in translation to constitute a fixed zero setting for positioning vertical axis of symmetry (z-z) of tire (7), work tool (11) being capable of moving in a horizontal direction parallel to the axis of rotation of the tire so as to achieve the positioning of their vertical axis of symmetry (y-y) in superposition with axis of symmetry (x-x) of the said tire in relation to width dimension (x) of tire (7) and to fixed reference (6).
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: November 14, 1995
    Assignee: Margangoni Meccanica S.p.A.
    Inventor: Giorgio Marangoni
  • Patent number: 5381630
    Abstract: A resurfacing method and apparatus for brake disks or rotors and for flywheels utilizes "dead centers" to support the rotor, flywheel or the like, avoiding disk thickness variations which would result from support of the disk or flywheel on roller bearings. Abrasive grinding wheels are used to effect the resurfacing of the disk, rotating in such a way relative to the disk rotation that a desired, long-wearing surface pattern is produced on the disk or flywheel.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: January 17, 1995
    Inventor: James Kinner