US3859756A - Method and device for grinding the end faces of cylindrical bodies, particularly of rollers for rolling bearings - Google Patents

Method and device for grinding the end faces of cylindrical bodies, particularly of rollers for rolling bearings Download PDF

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Publication number
US3859756A
US3859756A US298224A US29822472A US3859756A US 3859756 A US3859756 A US 3859756A US 298224 A US298224 A US 298224A US 29822472 A US29822472 A US 29822472A US 3859756 A US3859756 A US 3859756A
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United States
Prior art keywords
bodies
rolling track
rolling
cage
transport member
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Expired - Lifetime
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US298224A
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English (en)
Inventor
Giorgio Zerbola
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SKF Industrie SpA
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RIV Officine di Villar Perosa SpA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/162—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for mass articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/02—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of drums or rotating tables or discs

Definitions

  • ABSTRACT A method and a device for grinding the flat end faces of rollers for rolling bearings are described.
  • the rol- 52 U.S. 51/118 51/289 R which move along a Substantially Circular P 1m. 7/04 between two rotary grinding Wheels disposed one in front of the other, are carried by a rotating transport member, and rotate about its own axis. Said rollers roll on one or more rolling tracks which are coaxial with the axis of the transport member.
  • Cylindrical bodies are utilized in several applications, particularly in roller bearings wherein they constitute the rolling bodies.
  • each roller should have a high surface finish and a perfect perpendicularly between its end faces and its axis.
  • rollers are fed between two rotating grinding wheels disposed one in front of the other and, simultaneously, the rollers are allowed to rotate about their own axes.
  • Said rollers are fed by a disk disposed between the two aforementioned grinding wheels and entrained in rotation by an independent motor, usually provided by a variator.
  • the rollers are disposed in housings constituted by perforations provided in the periphery of said disk, whose axes are parallel to the axis of the latter.
  • the housings of the rollers are constituted by grooves; in order to hold the rollers in position, a flexible metallic member is wound thereon, whose ends are fixed; this member is adapted to apply to the rollers substantially radial pressures, directed towards the axis of the disk.
  • a rolling movement of the rollers on said member also takes place and, therefore, a rotational movement of the same rollers about their axes as well.
  • the rollers are caused to roll on both the cylindrical surface of a disk entrained in rotation and on the cylindrical surface of a corresponding stationary and somewhat resilient shoe, so as to form a channel for the circulation of said rollers, which is defined by two coaxial rolling tracks.
  • the rotational speed of the roller about its axis depends solely on the tangential actions generated by the friction of the grinding wheels during the cutting action; this action is variable depending on many factors, such as the materials to be removed, the physical characteristics of the grinding wheels and the coolant, etc., and is generally different from a roller to another, thereby causing variations of the quality of the surface.
  • the positioning of each roller inside the housing of the disk is scarcely accurate, thereby frequently resulting in errors ,of perpendicularity between the end faces of the ground rollers and the corresponding axes.
  • the second device described above has the same defects as the third, but to these the disadvantage must be added that, due to the friction of the cylindrical surface of the roller in the housing, sliding movements with respect to the flexible member can take place, with varia tion of the speed and considerable wear of the components of said device.
  • the object of the present invention is to provide a method and a device for grinding the flat end faces of cylindrical bodies, wherein said bodies move along a substantially circular path between two rotary grinding wheels disposed one in front of the other, which enable to avoid the disadvantages enumerated above.
  • a method for grinding the flat end faces of cylindrical bodies comprising:
  • a device for grinding the flat end faces of cylindrical bodies comprising:
  • first actuating means to drive said transport member
  • FIG. 1 shows a perspective view, partly in section and partly exploded, ofa portion of the device of the invention
  • FIG. 2 shows a diagrammatic side view of the device of FIG. 1;
  • FIG. 3 shows a side view of a portion of thedevice of FIG. 1;
  • FIG. 4 shows a section 'of the portion of the device of FIG. 3, made along the lines IV-IV;
  • FIGS. 6 and 7 show, respectively, a diagrammatic section of the portion of the device shown in FIG. 4 and a diagram of an epicyclic train kinematically equivalent to said portion, and
  • FIG. 8 is a diagrammatic side view of said epicyclic train.
  • the embodiment of the device in accordance with the invention illustrated in the drawings substantially comprises a feeder of the rollers to be ground generally indicated at l in FIG. 1, a pair of grinding wheels 2 disposed one in front of the other so as to define, with their active faces, a space 3 inside which the aforementioned feeder is partially housed, and means for actuating the feeder 1, generally indicated at 4.
  • the grinding wheels 2 (FIGS. 1 and 2), according to a known arrangement, have their axes substantially coincident (or forming a small angle therebetween) and rotate in the same direction and with the same angular velocity. These wheels are driven by means not shown in the drawings comprising, for instance, two electric motors each of which will cause one corresponding grinding wheel to rotate.
  • the feeder l substantially comprises a disk 5 (FIGS. 1 through 5) on whose cylindrical side surface a rolling track 6 (FIGS. 1 and 4) is provided, for a crown of rollers 7 whose end faces 7' must be ground.
  • Said disk is caused to rotate about its own axis by means not shown, for instance by a drive in which a speed variator is inserted, which is actuated, in turn, by an electric motor, so as to obtain any desired angular velocity of said disk, comprised in a predetermined range.
  • roller cage or retainer 8 Coaxially with the disk 5 and substantially in the same plane of the latter, there is disposed a roller cage or retainer 8 (FIGS. 1, 2 and 4) of substantially annular shape, whose cylindrical inner surface 11 (FIG. 5) coacts with the aforementioned rolling track 6 of the disk 5, by sliding on the same, in order to allow rotation of the cage relative to said disk. It is apparent that the cage 8, during its rotation, could be supported in a manner different from that described above, for instance with support means known per se and independent of the disk 5, which would eliminate any skimming between the surface 11 and the track 6.
  • a number of housings 12 for the rollers 7 is provided (FIGS. 1 and 3), each of which is defined by a cylindrical surface 13 (FIG. 13) and a pair of opposite planar faces 14.
  • the distance between these faces is slightly greater than the diameter of a roller 7, so that the latter may roll inside the corresponding housing, although being guided by said faces.
  • the cylindrical surface of each roller is in contact with the rolling track 6 of the disk 5, it will have a certain clearance with respect to the cylindrical surface 13 of the corresponding housing 12, as clearly seen in FIG. 3.
  • annular groove 15 is provided (FIGS. 1, 4 and 5), whose depth in radial direction, indicated at a in FIGS. 4 and 5, is such as to put each housing 12 in communication with the same groove.
  • the radially outermost part of said groove is provided with a pair of conical surfaces 16 (FIG. 4), which coact with a V-belt 17; this belt forms part of the actuating means 4 of the feeder 1 or is wound about a pulley 18 (FIG. 2).
  • annular groove 19 is also provided (FIGS. 4 and 5), which is disposed substantially in the same plane of the groove 15 and inside which a number of thin plates 20 coact.
  • Each of these plates is provided with a pair of projections 21 (FIGS. 1 and 3) housed in corresponding recesses 22 (FIG. 5) provided in the radially innermost part of the cage 8, between a pair of adjacent housings 12 of said cage.
  • the plates 20 are secured to the cage 8 by means of pins 23, each ofwhich passes through the cage 8 and a projection 21 of one of said plates; the latter serve the purpose of preventing any lateral displacement of the cage 8 relative to the disk 5 when the former rotates with respect to the latter, in a manner to be described below.
  • a small belt 24 (FIGS. 1, 2 and 4) which is wound about a part of the rollers 7 and around a pulley 25 forming part of the aforementioned actuating means 4 of the feeder 1.
  • Each of the pulleys l8 and 25 (FIG. 2) is driven by a corresponding drive (not shown) in which a speed variator is inserted; this variator is, in turn, driven by an electric motor, so as to cause each pulley to rotate with any angular velocity comprised in a predetermined range.
  • the rollers 7 to be ground are loaded on the feeder 1 either manually or automatically, by inserting each roller inside a corresponding housing 12 of the cage 8, while the latter rotates in a manner to be described below.
  • This loading is effected in one or more housings l2 comprised in the zone of the cage 8 where no contact between the belt 24 and the rollers 7 takes place (i.e., the zone comprised between the straight lines a and b, FIG. 2).
  • the rollers situated in the housings comprised in the remaining part of the cage 8 are held in contact with the rolling track 6 of the disk 5 by the action of the belt 24, which applies radial pressures to the cylindrical side surface of each of them.
  • the operation of the feeder l is as follows.
  • the disk 5 (FIG. 2) is caused to rotate by the corresponding actuating means, for instance in a counterclockwise direction, whereas the cage 8 is caused to rotate in the opposite direction by menas of the V-belt 17 driven by the pulley l8.
  • the rollers. 7 are caused to roll on the rolling track 6 of the disk 5 by the action of the small belt 24 actuated by the pulley 25.
  • the rollers 7 are fed between the grinding wheels 2, thereby following a substantially circular path therebetween; during this feed movement, the grinding wheels 2 will removepondere from the end faces 7' of the rollers 7 situated between them.
  • FIGS. 6 and 7 can be seen, respectively, a section of the feeder l and a diagram of an equivalent epicyclic train, represented with the modalities usually utilized for the study of such mechanisms.
  • FIG. 8 shows a side view, rather diagrammatic, of said epicyclic train.
  • the various components of the train are designated by the same reference numerals as utilized for the description of the corresponding parts of the feeder l; in particular, from the equivalent diagram of FIG. 7 it can be seen that the sun wheel 5 corresponds to the disk 5, the crown 24 to the belt 24, the planetary gears 7 to the rollers 7 and the train carrier 8 to the cage 8.
  • the device of the invention after choosing a suitable feed speed of the rollers 7 between the grinding wheels 2 (velocity Q on which the quan' tity of the rollers ground in the unit of time will depend, it is possible to select a suitable speed of rotation (00,) of the rollers 7 about their own axes, so as to obtain a high quality of processing of the faces 7 ground by the grinding wheels.
  • the velocities to, co and Q are interdependent according to the formula (1) and, therefore, since the speeds of the disk 5 and the belt 24 are driven by two independent motors, respectively, the system is kinematically complete even without the belt 17 and the corresponding pulley 18. Nevertheless, the use of this means has been recognized to be necessary in order to avoid that any sudden variation of the forces transmitted by the grinding wheels should cause a skimming of the belt24 on the rollers 7, with a precession of the cage 8.
  • the pulley 18, which is driven through a variator must be perfectly synchronized to be in accordance with the formula l either manually or automatically, with known mechanical or electric devices.
  • a device for grinding the flat end faces of cylindri cal bodies comprising:
  • a rotatable transport member for carrying said bodies along a substantially circular path between two rotary grinding wheels disposed one in front of the other;
  • first actuating means for effecting rotation of said transport member at a first predetermined angular speed variable within a predetermined range
  • second actuating means for effecting rotation of said internal rolling track at a second predetermined angular speed variable within a prefixed range
  • third actuating means for effecting rotation of said external rolling track at a third predetermined angular speed variable within a predetermined range
  • the ratio between the angular speeds of said internal rolling track' and said external rolling track can be selected so that rotation of said cylindrical bodies takes place substantially without sliding between said bodies and said rolling tracks.
  • a disk disposed inside said cage and coaxial therewith having an outer cylindrical surface constituting said internal rolling track, a motor being provided for rotating said disk;
  • a first belt which is wound about at least a part of said bodies and constitutes said external rolling track, said first belt being driven by a drive pulley;
  • annular groove provided in said disk for cooperating with thin plates protruding from the inner surface of said cage, so as to laterally guide said cage with respect to the disk during the rotation of the former relative to the latter.
  • Method for grinding the flat end faces of cylindrical bodies which comprises:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
US298224A 1971-11-03 1972-10-17 Method and device for grinding the end faces of cylindrical bodies, particularly of rollers for rolling bearings Expired - Lifetime US3859756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT70623/71A IT942788B (it) 1971-11-03 1971-11-03 Procedimento e dispositivo per la rettifica delle facce di estremita di corpi cilindrici in particolare di rulli per cuscinetti a rotolamen to

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US3859756A true US3859756A (en) 1975-01-14

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US298224A Expired - Lifetime US3859756A (en) 1971-11-03 1972-10-17 Method and device for grinding the end faces of cylindrical bodies, particularly of rollers for rolling bearings

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US (1) US3859756A (de)
JP (1) JPS4853394A (de)
DE (1) DE2253783A1 (de)
FR (1) FR2159899A5 (de)
GB (1) GB1411552A (de)
IT (1) IT942788B (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592169A (en) * 1984-08-07 1986-06-03 St. Florian Company, Ltd. Disc grinder with floating grinding wheel
US4621458A (en) * 1985-10-08 1986-11-11 Smith Robert S Flat disk polishing apparatus
US4635401A (en) * 1983-09-01 1987-01-13 Daisho Seiki Kabushiki Kaisha Duplex-head surface grinder
US4730961A (en) * 1984-12-18 1988-03-15 Marisa Cassan Edging machine preferably for chains
US5934983A (en) * 1996-04-08 1999-08-10 Kabushiki Kaisha Kobe Seiko Sho Double-side grinding method and double-side grinder
US6220939B1 (en) * 1998-06-02 2001-04-24 James E. Pruitt Method and apparatus for grinding round parts
EP1577057A2 (de) * 2004-03-16 2005-09-21 Nsk Ltd Verfahren und Vorrichtung zum Bearbeiten der Stirnfläche eines Werkstückes, Rolle und Rollenlager
US20070264916A1 (en) * 2004-10-19 2007-11-15 Jtekt Corporation Grinding Apparatus For a Pin For Use In Power Transmission Chain and Manufacture of a Pin For Use In Power Transmission Chain
US20080233843A1 (en) * 2007-03-23 2008-09-25 Koyo Machine Industries Co., Ltd. Two-sided surface grinding method and apparatus
US20100167628A1 (en) * 2006-02-15 2010-07-01 Bsh Holice A.S. Method of Grinding Bar-Shaped Workpieces, Grinding Machine for Carrying Out the Method, and Grinding Cell in Twin Arrangement
US20110195635A1 (en) * 2008-02-14 2011-08-11 Erwin Junker Maschinenfabrik Gmbh Method and grinding machine for the complete grinding of short and/or rod-shaped workpieces
US20120009852A1 (en) * 2009-04-09 2012-01-12 Ntn Corporation Work feeder for roller end face working machine, roller end face working machine and rollers for roller bearing
JP2012125778A (ja) * 2010-12-14 2012-07-05 Jtekt Corp 動力伝達チェーン用ピンの製造方法および製造装置
US20150285303A1 (en) * 2014-04-07 2015-10-08 Jtekt Corporation Machining apparatus for machining end face of tapered roller and grinding wheel body
CN105643420A (zh) * 2016-04-01 2016-06-08 朱赛花 螺栓杆底杆面抛光机
CN105798765A (zh) * 2016-05-16 2016-07-27 嘉兴学院 四平面往复式圆柱滚子研磨方法与装置
CN105798691A (zh) * 2016-05-13 2016-07-27 河南省华祥起重机械有限公司 一种自动化车床的上料装置
CN110014334A (zh) * 2019-05-24 2019-07-16 牟春凤 滚子连续磨削装置
CN112059860A (zh) * 2019-05-06 2020-12-11 刘海民 一种轴承加工端面打磨装置
WO2022000097A1 (de) * 2020-06-30 2022-01-06 Michael Adam Verfahren zur herstellung von rollen, insbesondere für mikrorolltische und rollen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917985C2 (de) * 1978-05-29 1982-02-25 Etablissements Sim S.A., Morges, Vaud Maschine zum gleichzeitigen Schleifen sich planparallel gegenüberligender Flächen an Werkstücken
US4531327A (en) * 1983-04-25 1985-07-30 Ex-Cell-O Corporation Centerless grinding machine with ferris wheel arrangement
EP2319657A1 (de) * 2009-11-06 2011-05-11 Supfina Grieshaber GmbH & Co. KG Planschleifmaschine mit Zusatzantrieb für Werkstücke in Form eines Umschlingungsgetriebes
DE102017120618A1 (de) 2017-09-07 2019-03-07 Schaeffler Technologies AG & Co. KG Vorrichtung zur Erzeugung einer ersten und zweiten gekrümmten Stirnfläche an einer Rolle für ein Wälzlager und Verfahren zur Erzeugung der ersten und zweiten gekrümmten Stirnfläche an der Rolle mit der Vorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831353A (en) * 1928-04-14 1931-11-10 Diamond Machine Company Apparatus for grinding
US2754635A (en) * 1952-10-06 1956-07-17 Federal Mogul Bower Bearings Machine for end-grinding tapered rollers
US3365842A (en) * 1965-10-21 1968-01-30 Champion Spark Plug Co Drive mechanism for a plurality of rotatable objects
US3469351A (en) * 1966-04-15 1969-09-30 Ernst Thielenhaus Mas Fab Fa Method of and apparatus for machining disk-shaped workpieces
US3540158A (en) * 1968-06-19 1970-11-17 Sun Tool & Machine Co Automatic polishing machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4210025Y1 (de) * 1964-07-31 1967-06-01
JPS4210626Y1 (de) * 1967-02-08 1967-06-12

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831353A (en) * 1928-04-14 1931-11-10 Diamond Machine Company Apparatus for grinding
US2754635A (en) * 1952-10-06 1956-07-17 Federal Mogul Bower Bearings Machine for end-grinding tapered rollers
US3365842A (en) * 1965-10-21 1968-01-30 Champion Spark Plug Co Drive mechanism for a plurality of rotatable objects
US3469351A (en) * 1966-04-15 1969-09-30 Ernst Thielenhaus Mas Fab Fa Method of and apparatus for machining disk-shaped workpieces
US3540158A (en) * 1968-06-19 1970-11-17 Sun Tool & Machine Co Automatic polishing machine

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635401A (en) * 1983-09-01 1987-01-13 Daisho Seiki Kabushiki Kaisha Duplex-head surface grinder
US4592169A (en) * 1984-08-07 1986-06-03 St. Florian Company, Ltd. Disc grinder with floating grinding wheel
US4730961A (en) * 1984-12-18 1988-03-15 Marisa Cassan Edging machine preferably for chains
US4621458A (en) * 1985-10-08 1986-11-11 Smith Robert S Flat disk polishing apparatus
US5934983A (en) * 1996-04-08 1999-08-10 Kabushiki Kaisha Kobe Seiko Sho Double-side grinding method and double-side grinder
US6220939B1 (en) * 1998-06-02 2001-04-24 James E. Pruitt Method and apparatus for grinding round parts
EP1577057A2 (de) * 2004-03-16 2005-09-21 Nsk Ltd Verfahren und Vorrichtung zum Bearbeiten der Stirnfläche eines Werkstückes, Rolle und Rollenlager
US20050233683A1 (en) * 2004-03-16 2005-10-20 Nsk Ltd. Machining apparatus and machining method of work end face, roller and roller bearing
EP1577057A3 (de) * 2004-03-16 2006-03-29 Nsk Ltd Verfahren und Vorrichtung zum Bearbeiten der Stirnfläche eines Werkstückes, Rolle und Rollenlager
US7182676B2 (en) 2004-03-16 2007-02-27 Nsk Ltd. Machining apparatus and machining method of work end face, roller and roller bearing
US20070264916A1 (en) * 2004-10-19 2007-11-15 Jtekt Corporation Grinding Apparatus For a Pin For Use In Power Transmission Chain and Manufacture of a Pin For Use In Power Transmission Chain
US7607969B2 (en) * 2004-10-19 2009-10-27 Jtekt Corporation Grinding apparatus for a pin for use in power transmission chain and manufacture method of a pin for use in power transmission chain
US20100009600A1 (en) * 2004-10-19 2010-01-14 Hiroyuki Miura Grinding apparatus for a pin for use in power transmission chain and manufacture method of a pin for use
US7901269B2 (en) 2004-10-19 2011-03-08 Jtekt Corporation Grinding apparatus for a pin for use in power transmission chain and manufacture method of a pin for use in power transmission chain
US20100167628A1 (en) * 2006-02-15 2010-07-01 Bsh Holice A.S. Method of Grinding Bar-Shaped Workpieces, Grinding Machine for Carrying Out the Method, and Grinding Cell in Twin Arrangement
US8221194B2 (en) * 2006-02-15 2012-07-17 BSH Holice A.S Method of grinding bar-shaped workpieces, grinding machine for carrying out the method, and grinding cell in twin arrangement
US20080233843A1 (en) * 2007-03-23 2008-09-25 Koyo Machine Industries Co., Ltd. Two-sided surface grinding method and apparatus
US7674157B2 (en) * 2007-03-23 2010-03-09 Koyo Machine Industries Co., Ltd. Two-sided surface grinding method
US20110195635A1 (en) * 2008-02-14 2011-08-11 Erwin Junker Maschinenfabrik Gmbh Method and grinding machine for the complete grinding of short and/or rod-shaped workpieces
US8475229B2 (en) * 2008-02-14 2013-07-02 Erwin Junker Maschinenfabrik Gmbh Method and grinding machine for the complete grinding of short and/or rod-shaped workpieces
US20120009852A1 (en) * 2009-04-09 2012-01-12 Ntn Corporation Work feeder for roller end face working machine, roller end face working machine and rollers for roller bearing
EP2418048A1 (de) * 2009-04-09 2012-02-15 NTN Corporation Zufuhrvorrichtung für rollenendenbearbeitungsmaschine, rollenendenbearbeitungsmaschine und rollen für rollenlager
US8613643B2 (en) * 2009-04-09 2013-12-24 Ntn Corporation Work feeder for roller end face working machine, roller end face working machine and rollers for roller bearing
EP2418048A4 (de) * 2009-04-09 2014-01-01 Ntn Toyo Bearing Co Ltd Zufuhrvorrichtung für rollenendenbearbeitungsmaschine, rollenendenbearbeitungsmaschine und rollen für rollenlager
JP2012125778A (ja) * 2010-12-14 2012-07-05 Jtekt Corp 動力伝達チェーン用ピンの製造方法および製造装置
US9605714B2 (en) * 2014-04-07 2017-03-28 Jtekt Corporation Machining apparatus for machining end face of tapered roller and grinding wheel body
US20150285303A1 (en) * 2014-04-07 2015-10-08 Jtekt Corporation Machining apparatus for machining end face of tapered roller and grinding wheel body
CN105643420A (zh) * 2016-04-01 2016-06-08 朱赛花 螺栓杆底杆面抛光机
CN105643420B (zh) * 2016-04-01 2018-07-06 镇江合力汽车紧固件有限公司 螺栓杆底杆面抛光机
CN105798691A (zh) * 2016-05-13 2016-07-27 河南省华祥起重机械有限公司 一种自动化车床的上料装置
CN105798765A (zh) * 2016-05-16 2016-07-27 嘉兴学院 四平面往复式圆柱滚子研磨方法与装置
CN105798765B (zh) * 2016-05-16 2017-10-20 嘉兴学院 四平面往复式圆柱滚子研磨方法与装置
CN112059860A (zh) * 2019-05-06 2020-12-11 刘海民 一种轴承加工端面打磨装置
CN112059860B (zh) * 2019-05-06 2022-04-22 哈尔滨哈轴精密轴承制造有限公司 一种轴承加工端面打磨装置
CN110014334A (zh) * 2019-05-24 2019-07-16 牟春凤 滚子连续磨削装置
CN110014334B (zh) * 2019-05-24 2024-04-12 湖南创新机电技术开发有限公司 滚子连续磨削装置
WO2022000097A1 (de) * 2020-06-30 2022-01-06 Michael Adam Verfahren zur herstellung von rollen, insbesondere für mikrorolltische und rollen

Also Published As

Publication number Publication date
IT942788B (it) 1973-04-02
JPS4853394A (de) 1973-07-26
GB1411552A (en) 1975-10-29
FR2159899A5 (de) 1973-06-22
DE2253783A1 (de) 1973-06-14

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