US3866359A - Surface grinding apparatus - Google Patents

Surface grinding apparatus Download PDF

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Publication number
US3866359A
US3866359A US454584A US45458474A US3866359A US 3866359 A US3866359 A US 3866359A US 454584 A US454584 A US 454584A US 45458474 A US45458474 A US 45458474A US 3866359 A US3866359 A US 3866359A
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US
United States
Prior art keywords
grinding
ram
tool head
grinding wheel
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US454584A
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English (en)
Inventor
Makoto Kikuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
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Filing date
Publication date
Application filed by Toyoda Koki KK filed Critical Toyoda Koki KK
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Publication of US3866359A publication Critical patent/US3866359A/en
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Classifications

    • 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
    • B24B7/02—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a reciprocatingly-moved work-table

Definitions

  • ABSTRACT A surface grinding apparatus for grinding a flat surface of a workpiece comprising a tool head slidably mounted on horizontal hydrostatic slide surfaces of a bed for rotary movement in a horizontal circular path, A grinding wheel shaft provided with a cup shaped grinding wheel is rotatably supported on a ram which is vertically slidably mounted in the tool head.
  • the grinding wheel shaft may be angularly adjusted relative to the grinding surface of the workpiece in a vertical plane and the ram may be moved vertically relative to the workpiece to render infeed movement to the grinding wheel.
  • the present invention relates generally to a surface grinding apparatus and more particularly to an im proved surface grinding apparatus having a cup shaped grinding wheel.
  • a conventional surface grinding apparatus has used a circumferential peripheral surface of a round grinding wheel for grinding a flat surface of a workpiece and has been somewhat successful.
  • a surface grinding apparatus having a cup shaped grinding wheel has not been constructed because of several problems such as the lack of high efficiency and the fear of the grinding surface of a workpiece being overheated.
  • Another object of the present invention is to provide an improved surface grinding apparatus having a cup shaped grinding wheel wherein the grinding wheel is rotated about its own axis and in a horizontal circular path by rotary movement of a tool head.
  • Another object of the present invention is to provide an improved surface grinding apparatus having a cup shaped grinding wheel wherein a grinding wheel shaft is angularly adjustable in a vertical plane.
  • FIG. I is a front view of a preferred embodiment of the present invention.
  • FIG. 2 is a plan view of the present invention illustrated in FIG. I;
  • FIG. 3 is an enlarged view of the principal elements of the present invention shown in FIGS. 1 and 2.
  • FIG. 1 a bed at the center of which a conventional linear-type transfer device is provided for transferring workpieces W to a predetermined position thereon.
  • a conventional linear-type transfer device is provided for transferring workpieces W to a predetermined position thereon.
  • hydrostatic slide surfaces la and lb are respectively provided on which a tool head 3 having hydrostatic pockets 3a and 3b, respectively, on the lower surface thereof is mounted slidably in a horizontal plane.
  • a synchronous shaft 5, seen in FIG. 2 is rotatably supported by bearing blocks 4 mounted on the tool head 3.
  • the synchronous shaft 5 is rotated by a motor 6 fixed to the right side of the tool head 3.
  • a motor 6 fixed to the right side of the tool head 3.
  • supporting blocks 7 and 8 are mounted, which rotatably support respective rotary shafts 9 and 10.
  • Sprocket wheels 11 and 12 are respectively secured to one ends of the rotary shafts 9 and and are drivingly connected to the synchronous shaft 5 through respective chains 15 and 16.
  • vertical drive shafts l7 and 18 are rotatably supported in the supporting blocks 7 and 8, and are respectively drivingly connected to the other ends of the rotary shafts 9 and 10 through worm and worm wheel mechanisms, not shown.
  • the lower ends of the respective drive shafts l7 and 18 pass through the lower surface of the tool head 3 and have respective circular plates 19 and 20 which are coaxially and integrally formed therewith.
  • the circular plates 19 and 20 carry respective eccentric shafts 21 and 22 which are eccentric therewith at predetermined distances.
  • the eccentric shafts 21 and 22 project into the slide surfaces la and lb, respectively, and are rotatably supported therein. Therefore, when the motor 6 is energized, the circular plates 19 and 20 are respectively rotated about the eccentric shafts 21 and 22 whereby the tool head 3 is rotated in a horizontal circular path.
  • a grinding wheel head 23 is mounted on the tool head 3 being substantially centrally disposed between the slide surfaces la and lb.
  • a ram is vertically movably supported in the wheel head 23 and is guided by guide shafts 24 which are slidably supported in the wheel head 23.
  • the ram 25 is moved vertically through a worm 26 driven by a motor, not shown, a worm wheel 27 and a pinion 28 provided in the wheel head 23 for rendering an infeed or downward movement to a cup-shaped grinding wheel 34, described hereinafter, to perform a fine grinding operation on the workpiece W.
  • an adjusting sleeve 29 is mounted in the ram 25 and is restrained from rotation relative thereto.
  • the lower portion of the adjusting sleeve 29 is journalled by a spherical bearing 30 so that the adjusting sleeve 29 is angularly adjustably supported.
  • a grinding wheel shaft 33 is rotatably sup ported in the adjusting sleeve 29 through metal bearings 31 and 32.
  • the center of the spherical bearing 30 is located on the axis of the grinding wheel shaft 33.
  • the wheel shaft 33 carries the cup-shaped grinding wheel 34 at the lower end thereof and the upper end thereof is connected through an elastic coupling 37 to a rotary shaft of a motor 36 mounted on a support to which the upper ends of the guide shafts 24 are secured.
  • a sleeve 38 is fixed to the upper end of the ram 25.
  • a spherical sleeve 39 having a spherical surface on the outer peripheral surface thereof is rotatably journalled on the outer peripheral surface of the upper end of the adjusting sleeve 29.
  • Four equiangularly spaced members 40 are vertically movably inserted between the outer peripheral surface of the spherical sleeve 39 andthe inner peripheral surface of the sleeve 38.
  • Each of the four members 40 is vertically adjusted by a differential screw 42 in a plate 41 fixed to the sleeve 38 so that the adjusting sleeve 29 and the grinding wheel shaft 33 may be adjusted in perpendicular relationship with the grinding surface of the workpiece.
  • a surface apparatus for grinding a flat surface of a workpiece comprising:
  • a bed for holding the workpiece in a machining position said bed being provided with horizontal hydrostatic slide surfaces:
  • a tool head slidably mounted on said horizontal hydrostatic slide surfaces of said bed for rotary movement in a horizontal circular path;
  • a ram vertically slidably mounted on said tool head
  • a grinding wheel shaft rotatably supported in said ram and provided with a cup-shaped grinding wheel at the lower end thereof;
  • a surface grinding apparatus according to claim 1, wherein said driving means. for moving said tool head comprises:
  • a driving shaft rotatably supported in each of said supporting blocks and drivingly connected to said synchronous shaft to be rotated in a horizontal plane, said drive shaft passing through the lower surface of said tool head and carrying an eccentric shaft which is eccentric therewith at a predetermined distance;
  • a surface grinding apparatus further comprising a grinding wheel head being mounted on said tool head, and wherein said ram is slidable in said wheel head and said driving means for said wheel shaft is mounted on said ram and is drivingly connected to said wheel shaft at the upper and thereof.
  • a surface grinding apparatus according to claim 3, wherein said means for angularly adjusting said grinding wheel shaft comprises:
  • an adjusting sleeve mounted in said ram and restrained from rotation relative thereto, said adjusting sleeve rotatably supporting said grinding wheel shaft and the lower portion thereof being journalled in said ram through a spherical bearing;
  • a spherical sleeve having a spherical surface on the outer peripheral surface thereof and being rotatably journalled on the outer peripheral surface of the upper end of said adjusting sleeve;

Landscapes

  • 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)
US454584A 1973-03-23 1974-03-25 Surface grinding apparatus Expired - Lifetime US3866359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3396173A JPS5347954B2 (de) 1973-03-23 1973-03-23

Publications (1)

Publication Number Publication Date
US3866359A true US3866359A (en) 1975-02-18

Family

ID=12401074

Family Applications (1)

Application Number Title Priority Date Filing Date
US454584A Expired - Lifetime US3866359A (en) 1973-03-23 1974-03-25 Surface grinding apparatus

Country Status (5)

Country Link
US (1) US3866359A (de)
JP (1) JPS5347954B2 (de)
DE (1) DE2407401A1 (de)
FR (1) FR2222173B1 (de)
GB (1) GB1429615A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5816892A (en) * 1997-02-06 1998-10-06 Cobra Machine Tool Co., Inc. Positioning control for combined milling machine and internally positioned grinding wheel
US5879225A (en) * 1996-04-25 1999-03-09 Fujikoshi Kikai Kogyo Kabushiki Kaisha Polishing machine
RU2162400C2 (ru) * 1999-03-24 2001-01-27 Орловский государственный технический университет Способ плоского шлифования
US20070010178A1 (en) * 2005-07-11 2007-01-11 Von Schumann Friedrich Continuous grinding machine for machining a level workpiece surface
US20150004883A1 (en) * 2013-06-28 2015-01-01 Samsung Display Co., Ltd. Apparatus for grinding substrate
CN107059709A (zh) * 2017-04-11 2017-08-18 广州方阁建筑工程技术开发有限公司 一种桥面维护装置
CN111590418A (zh) * 2020-04-23 2020-08-28 王水波 一种全自动的木门打磨装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186823B (en) * 1986-02-06 1990-08-08 Nissei Ind Double-end surface grinding machine
JP7098257B2 (ja) * 2019-03-22 2022-07-11 住友重機械ファインテック株式会社 研削装置の制御装置、プログラム、及び研削方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948087A (en) * 1958-11-03 1960-08-09 Reproduction Res Lab Inc Plate graining apparatus
US3593465A (en) * 1968-04-01 1971-07-20 James A Krippes Concrete rail grinder
US3791079A (en) * 1972-05-23 1974-02-12 Itek Corp Pressure applicator for surface generating apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948087A (en) * 1958-11-03 1960-08-09 Reproduction Res Lab Inc Plate graining apparatus
US3593465A (en) * 1968-04-01 1971-07-20 James A Krippes Concrete rail grinder
US3791079A (en) * 1972-05-23 1974-02-12 Itek Corp Pressure applicator for surface generating apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5879225A (en) * 1996-04-25 1999-03-09 Fujikoshi Kikai Kogyo Kabushiki Kaisha Polishing machine
US5816892A (en) * 1997-02-06 1998-10-06 Cobra Machine Tool Co., Inc. Positioning control for combined milling machine and internally positioned grinding wheel
RU2162400C2 (ru) * 1999-03-24 2001-01-27 Орловский государственный технический университет Способ плоского шлифования
US20070010178A1 (en) * 2005-07-11 2007-01-11 Von Schumann Friedrich Continuous grinding machine for machining a level workpiece surface
US20150004883A1 (en) * 2013-06-28 2015-01-01 Samsung Display Co., Ltd. Apparatus for grinding substrate
US9352439B2 (en) * 2013-06-28 2016-05-31 Samsung Display Co., Ltd. Apparatus for grinding substrate
CN107059709A (zh) * 2017-04-11 2017-08-18 广州方阁建筑工程技术开发有限公司 一种桥面维护装置
CN107059709B (zh) * 2017-04-11 2019-05-10 陕西郡厦建设工程有限公司 一种桥面维护装置
CN111590418A (zh) * 2020-04-23 2020-08-28 王水波 一种全自动的木门打磨装置

Also Published As

Publication number Publication date
GB1429615A (en) 1976-03-24
DE2407401A1 (de) 1974-10-03
FR2222173A1 (de) 1974-10-18
JPS5347954B2 (de) 1978-12-25
JPS49120292A (de) 1974-11-16
FR2222173B1 (de) 1977-06-10

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