EP0855246A2 - Nutenschleifspindel - Google Patents

Nutenschleifspindel Download PDF

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Publication number
EP0855246A2
EP0855246A2 EP98300450A EP98300450A EP0855246A2 EP 0855246 A2 EP0855246 A2 EP 0855246A2 EP 98300450 A EP98300450 A EP 98300450A EP 98300450 A EP98300450 A EP 98300450A EP 0855246 A2 EP0855246 A2 EP 0855246A2
Authority
EP
European Patent Office
Prior art keywords
driving shaft
spindle
bearing holder
wheel
bearing
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.)
Withdrawn
Application number
EP98300450A
Other languages
English (en)
French (fr)
Other versions
EP0855246A3 (de
Inventor
Hiroyuki Kihara
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.)
Seiko Seiki KK
Original Assignee
Seiko Seiki KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Seiki KK filed Critical Seiko Seiki KK
Publication of EP0855246A2 publication Critical patent/EP0855246A2/de
Publication of EP0855246A3 publication Critical patent/EP0855246A3/de
Withdrawn legal-status Critical Current

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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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements

Definitions

  • the present invention relates to a groove grinding spindle, for example, a groove grinding spindle for grooving an inner peripheral face of a cylindrical hole in a depth direction of the hole.
  • a groove grinding spindle is used.
  • Such a groove grinding spindle is constituted by: an output shaft of a motor, a wheel spindle to which a grinding wheel having a ring-like shape is attached, a belt wheel of the output shaft for transmitting rotation of the output shaft of the motor to the wheel spindle, a belt made to wrap on the belt wheel of the wheel spindle and the like.
  • the groove grinding spindle is generally used at high speed and accordingly, a drawback arises where wear of the belt is caused in a short period of time.
  • the belt must be exchanged in accordance with the state of wear.
  • a groove grinding spindle comprising a rotatable wheel spindle to which a grinding wheel having a ring-like shape is attached, a driving shaft connected to an output shaft of a motor, bevel gears for transmitting rotation of the driving shaft to the wheel spindle, a needle bearing for axially supporting one end of the driving shaft, bearings axially supporting the other end of the driving shaft, and backlash adjustment means for adjusting the position of the driving shaft in the axial direction thereof.
  • the backlash adjustment means comprises a bearing holder for supporting the bearings, a moving mechanism for moving the bearing holder in the axial direction of the driving shaft and a fixing member for fixing the bearing holder at one side of the moving mechanism.
  • the moving mechanism comprises a fitting recess provided in a spindle main body for slidably fitting the bearing holder in the axial direction of the driving shaft, a flange installed at an outer peripheral portion of the bearing holder which does not enter the fitting recess, and adjusting screws which are in mesh with screw holes provided in a thickness direction of the flange. Front ends of the screws are brought into contact with a peripheral edge of an opening portion of the fitting recess.
  • the location of the driving shaft in the axial direction thereof is adjusted and fixed by the adjustment means.
  • the location of the driving shaft in the axial direction is positioned by adjusting the adjusting screws and after positioning, the location is fixed by a set screw. Therefore, adjustment of backlash can be facilitated.
  • Fig. 1 is a sectional view of a groove grinding spindle according to an embodiment of the present invention.
  • the groove grinding spindle is provided with a rotatable wheel spindle 2 to which the grinding wheel 1 having a ring-like shape is attached.
  • a driving shaft 5 is connected to an output shaft 4 of a motor 3.
  • Spiral bevel gears 6 and 7 transmit rotation of the driving shaft 5 to the wheel spindle 2.
  • the needle bearing 8 axially supports the driving shaft 5 at the end thereof adjacent the wheel spindle 2 and the angular bearings 9 and 10 axial support the driving shaft 5 at the end thereof adjacent the output shaft 4 of the motor 3.
  • the groove grinding spindle is provided with a backlash adjustment mechanism 11 for positioning and fixing the driving shaft 5 in the axial direction thereof for adjusting backlash of the spiral bevel gears 6 and 7.
  • the motor 3 is attached to the spindle main body 12 by a bolt 14 via a positioning member 13. Positioning of the motor 3 in respect of the spindle main body 12 is carried out by a positioning pin 15.
  • the output shaft 4 of the motor 3 is connected to the driving shaft 5, which extends in the longitudinal direction of the spindle main body 12, via a coupling 16.
  • the driving shaft 5 is rotatably supported by the angular bearings 9 and 10 at the end thereof adjacent the output shaft 4 of the motor 3.
  • the end of the shaft 5 adjacent the bevel gear 7 is rotatably supported by the needle bearing 8.
  • Shaft 5 is housed in the spindle main body 12.
  • the needle bearing 8 is supported by a wheel spindle support frame 31, mentioned later.
  • the spiral bevel gear 7 is attached to the front end portion of the driving shaft 5 and is in mesh with a spiral bevel gear 6.
  • the bevel gear 6 is attached to the lower end side of the wheel spindle 2.
  • a grindstone holder 17 is fixed to wheel spindle 2.
  • the spiral bevel gears 6 and 7 are covered by a cover 41 attached to the wheel spindle support frame 31 by a bolt 42.
  • the space incorporating the driving shaft 5 is hermetically sealed from outside of the spindle main body 12 as illustrated.
  • the grinding wheel 1 is rotated by rotationally driving the driving shaft 5 by the motor 3. Drive force is transmitted to the wheel spindle 2 with a 90° change of direction being effected by the spiral bevel gears 6 and 7.
  • the surface of the grinding wheel 1 is constituted to be supplied with grinding fluid.
  • the backlash adjustment mechanism 11 comprises a bearing holder 18 for incorporating the angular bearing 9 and 10, a fitting recess 21 for fitting slidably the bearing holder 18 and adjusting screws 25 and 26 for positioning to adjust the location of the bearing holder 18 and the like.
  • the angular bearings 9 and 10 are incorporated in the cylindrical bearing holder 18, both ends of which are opened.
  • the respective outer rings of the angular bearings 9 and 10 are fixed to the bearing holder 18 by an outer ring nut 19 and the respective inner rings are fixed to the driving shaft 5 by an inner ring nut 20.
  • the outer periphery of the bearing holder 18 is fitted slidably to the cylindrical fitting recess 21 provided in the spindle main body 12.
  • a flange 22 is provided at an outer periphery of the bearing holder 18 on a rear end side thereof. The flange 22 is larger than the fitting recess 21.
  • Screw holes 23 and 24 are provided in the thickness direction of the flange 22 at positions in the flange 22 opposed to each other.
  • the adjusting screws 25 and 26, for adjustably positioning the driving shaft 5 in the axial direction thereof, are in mesh with the respective screw holes 23 and 24.
  • the respective front ends of the respective adjusting screws 25 and 26 are brought into contact with a flat peripheral edge 30 adjacent the opening of the fitting recess 21.
  • Nuts 43 and 44 on the rear end sides of the screws are brought into contact with the flange 22.
  • a screw hole 27 extends from a peripheral face of the spindle main body on the bottom thereof towards the fitting recess 21.
  • a set screw 28 is in mesh with the screw hole 27 and the front end of the set screw 28 is brought into contact with a flattened outer peripheral face 29 of the bearing holder 28 as shown in Fig. 1.
  • a nozzle 45 for supplying lubricant to the annular bearing 9 and 10 opens into the bottom of the fitting recess.
  • the wheel spindle 2 is supported by two bearings 32 and 33 fixed to the wheel spindle support frame 31.
  • the wheel spindle support frame 31 is fixed to the front end side of the spindle main body 12 by a bolt 34.
  • a boss 35 projects upwardly from a portion of the wheel spindle support frame 31 where the bearing 32 and 33 are supported.
  • the boss 35 has a substantially cylindrical shape and a male screw thread 36 is formed on the outer peripheral face thereof.
  • a bearing retainer 36a which has a cup shape, surrounds the outer periphery of the boss 35 and is screwed to the male screw portion 36, thus locking the bearing 32 in place.
  • the holder 17 has a cup shape and surrounds the outer periphery of the bearing holder 36a with a small gap therebetween. Portions of the outer peripheral face of the bearing holder 36a and the inner peripheral face of the grindstone holder 17 constitute a labyrinth seal.
  • the grinding wheel 1 has a ring-like shape with an inner diameter substantially equal to an outer diameter of the grindstone holder 17 and is thus fitted to the outer periphery of the grindstone holder 17.
  • the vertical outer periphery of grinding wheel 1 has a substantially semicircular shape.
  • the lower side of the grinding wheel 1 is retained by a flange 38 formed on the lower end of the grindstone holder 17.
  • a male screw thread 39 is formed on the outer periphery of the grindstone holder 17.
  • the grinding wheel 1 is held in position by a grindstone fixing nut 40 screwed to the male screw 39.
  • the height of fixing the grinding wheel 1 is substantially half of the height of the spindle main body 12 (even if not shown as such in figure 1).
  • the width and the height of the spindle main body 12 are substantially equal to the diameter and the height of the grindstone holder 17. Thus, when the groove grinding spindle is inserted into a cylindrical hole in the grinding operation, the spindle main body 12 is prevented from being brought into contact with the inner peripheral face of the hole.
  • the driving force of the motor 3 is transmitted to the wheel spindle 2 via the coupling 16, the driving shaft 5, the spiral bevel gear 7 and the spiral bevel gear 6 by which the grinding wheel 1 is rotated.
  • grinding fluid is supplied to the surface of the grinding wheel 1.
  • the peripheral face of a left side or a right side of the rotating grinding wheel 1 is cut into the inner peripheral face of the cylindrical hole and the groove grinding spindle is advanced by a predetermined distance in the depth direction of the cylindrical hole thereby forming a groove.
  • the motor 3 is removed from the spindle main body 12 by loosening the bolt 14 and the cover 41 attached to the wheel spindle support frame 31 is removed by loosening the bolt 42.
  • the respective nuts 43 and 44 in mesh with the adjusting screws 25 and 26 are retracted and loosened.
  • the adjusting screws 25 and 26 are retracted by which a gap is provided between the adjusting screws 25 and 26 and the peripheral edge 30 of the opening of the fitting recess 21.
  • the set screw 28 is loosened.
  • the driving shaft 5 is advanced by pushing the bearing holder 18 forward and the spiral bevel gear 7 is thus brought back into firm contact with the spiral bevel gear 6.
  • the adjusting screws 25 and 26 are rotated and advanced.
  • the front ends of the adjusting screws 25 and 26 are brought into contact with the peripheral edge 30 and the rotation is continued further, by which the bearing holder 18 is moved to the right (given the position shown in Fig. 1).
  • the location of the driving shaft 5 in the axial direction is retrogressed such that the mesh state (play) of the spiral bevel gear 7 with the spiral bevel gear 6 is brought into a desired state.
  • the driving shaft 5 can be advanced and retrogressed in such a way since the bevel gear end of the driving shaft 5 is axially supported by the needle bearing 8.
  • the wheel spindle end of the driving shaft 5 is axially supported by the needle bearing 8.
  • the motor end of the driving shaft 5 is axially supported by the angular bearings 9 and 10 and the angular bearings 9 and 10 are supported by the bearing holder 18.
  • the driving shaft 5 is positioned by adjusting the adjusting screws 25 and 26 and, after positioning, the bearing holder 18 is fixed to the spindle main body 12 by the set screw 28. Therefore, the adjustment of the backlash of the spiral bevel gears 6 and 7 can be facilitated.
  • the output shaft 4 of the motor 3 and the wheel spindle 2 are connected by the driving shaft 5 and the spiral bevel gears 6 and 7. Therefore, there is provided an advantage in that when some distance is needed between the output shaft 4 and the wheel spindle 2, the distance can easily be dealt with by using a longer driving shaft 5 and housing 12.
  • the drive force of the motor 3 is transmitted to the wheel spindle 2 by bringing the spiral bevel gears 6 and 7 in mesh with each other, the drive force may be transmitted by other gears.
  • a worm wheel can be attached to the wheel spindle 2 in place of the spiral bevel gear 6 and a worm attached to the front end of the driving shaft 5 in place of the spiral bevel gear 7.
  • the drive force of the motor 3 may be transmitted to the wheel spindle 2 by arranging to move the driving shaft 5 and the like and bringing the worm and the worm wheel in mesh with each other. Further, the drive force of the motor 3 may be transmitted to the wheel spindle 2 by attaching screw gears respectively to the wheel spindle 2 and the driving shaft 5 in place of the spiral bevel gears 6 and 7 and bringing them in mesh with each other.
  • the screw holes 23 and 24 are provided in the thickness direction of the flange 22 and the screws 25 and 26 are in mesh with the respective screw holes 23 and 24 for adjusting the position of the driving shaft 5 in the axial direction.
  • the movement of the driving shaft 5 in the axial direction may alternatively be carried out as follows.
  • a male screw can be formed on the outer peripheral face of the bearing holder 18 adjacent the motor 3 whereas a female screw in mesh with the male screw can be formed on the inner peripheral face of the fitting recess 21.
  • the driving shaft 5 may thus be constituted to be able to move in the axial direction by rotating the screw holder 18.
  • adjustment means for positioning and fixing the position of the driving shaft in the axial direction is provided and therefore the adjustment of backlash can be facilitated.
EP98300450A 1997-01-23 1998-01-22 Nutenschleifspindel Withdrawn EP0855246A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24412/97 1997-01-23
JP2441297A JPH10202519A (ja) 1997-01-23 1997-01-23 溝研削用スピンドル

Publications (2)

Publication Number Publication Date
EP0855246A2 true EP0855246A2 (de) 1998-07-29
EP0855246A3 EP0855246A3 (de) 1999-01-20

Family

ID=12137454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98300450A Withdrawn EP0855246A3 (de) 1997-01-23 1998-01-22 Nutenschleifspindel

Country Status (2)

Country Link
EP (1) EP0855246A3 (de)
JP (1) JPH10202519A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201362A1 (de) * 2000-10-31 2002-05-02 REINECKER KOPP Werkzeugmaschinen GmbH Werkzeug zur Bearbeitung von Flächen in Bohrungen
EP1293534A1 (de) * 2000-06-20 2003-03-19 Mitsui Chemicals, Inc. Vernetzte kautschukzusammensetzungen und deren anwendung
DE10037015B4 (de) * 2000-03-28 2004-11-18 Daisho Seiki Corporation, Ikeda Flügelnut-Schleifvorrichtung zum Innenschleifen eines Kompressorzylinders
CN102814736A (zh) * 2012-09-04 2012-12-12 江苏天马通用设备有限公司 磨头组件的直联传动机构
CN103085066A (zh) * 2006-04-21 2013-05-08 Abb公司 工业机器人的锥齿轮装置、臂的腕部和调整侧隙的方法
EP2363228A3 (de) * 2010-03-04 2014-06-25 Wesa GmbH Werkzeug und Verfahren zum Herstellen einer Welle
CN104942311A (zh) * 2015-06-09 2015-09-30 安庆联控机电科技发展有限公司 一种铰珩机定位主轴装置
CN106392207A (zh) * 2016-11-10 2017-02-15 平湖市山特螺纹工具有限公司 磨槽机的固定连接轴
CN111791118A (zh) * 2020-07-23 2020-10-20 罗静婷 一种有色金属产品打磨装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100436250B1 (ko) * 2001-06-21 2004-06-16 이더블유에스 코리아 주식회사 터렛용 베벨기어의 조정구조

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083152A (en) * 1975-11-21 1978-04-11 Kapp & Co. Werkzeugmaschinenfabrik Apparatus for grinding of internal axially extending profiles
US4735019A (en) * 1984-11-07 1988-04-05 Hans Wiederkehr Grinding head
EP0548717A1 (de) * 1991-12-21 1993-06-30 Robert Bosch Gmbh Handwerkzeugmaschine mit Winkelgetriebe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083152A (en) * 1975-11-21 1978-04-11 Kapp & Co. Werkzeugmaschinenfabrik Apparatus for grinding of internal axially extending profiles
US4735019A (en) * 1984-11-07 1988-04-05 Hans Wiederkehr Grinding head
EP0548717A1 (de) * 1991-12-21 1993-06-30 Robert Bosch Gmbh Handwerkzeugmaschine mit Winkelgetriebe

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037015B4 (de) * 2000-03-28 2004-11-18 Daisho Seiki Corporation, Ikeda Flügelnut-Schleifvorrichtung zum Innenschleifen eines Kompressorzylinders
EP1293534A1 (de) * 2000-06-20 2003-03-19 Mitsui Chemicals, Inc. Vernetzte kautschukzusammensetzungen und deren anwendung
EP1293534A4 (de) * 2000-06-20 2003-08-06 Mitsui Chemicals Inc Vernetzte kautschukzusammensetzungen und deren anwendung
US6743862B2 (en) 2000-06-20 2004-06-01 Mitsui Chemicals, Inc. Crosslinkable rubber compositions and uses thereof
EP1201362A1 (de) * 2000-10-31 2002-05-02 REINECKER KOPP Werkzeugmaschinen GmbH Werkzeug zur Bearbeitung von Flächen in Bohrungen
DE10054122A1 (de) * 2000-10-31 2002-05-16 Reinecker Kopp Werkzeugmaschin Schleifwerkzeug
US6783444B2 (en) 2000-10-31 2004-08-31 Reinecker Kopp Werkzeugmaschinen Gmbh Tool for machining surfaces in bores
DE10054122B4 (de) * 2000-10-31 2019-05-16 Emag Holding Gmbh Schleifwerkzeug
CN103085066A (zh) * 2006-04-21 2013-05-08 Abb公司 工业机器人的锥齿轮装置、臂的腕部和调整侧隙的方法
CN103085066B (zh) * 2006-04-21 2015-09-09 Abb公司 工业机器人的锥齿轮装置、臂的腕部和调整侧隙的方法
EP2363228A3 (de) * 2010-03-04 2014-06-25 Wesa GmbH Werkzeug und Verfahren zum Herstellen einer Welle
CN102814736B (zh) * 2012-09-04 2014-06-25 江苏天马通用设备有限公司 磨头组件的直联传动机构
CN102814736A (zh) * 2012-09-04 2012-12-12 江苏天马通用设备有限公司 磨头组件的直联传动机构
CN104942311A (zh) * 2015-06-09 2015-09-30 安庆联控机电科技发展有限公司 一种铰珩机定位主轴装置
CN106392207A (zh) * 2016-11-10 2017-02-15 平湖市山特螺纹工具有限公司 磨槽机的固定连接轴
CN111791118A (zh) * 2020-07-23 2020-10-20 罗静婷 一种有色金属产品打磨装置
CN111791118B (zh) * 2020-07-23 2021-11-16 罗静婷 一种有色金属产品打磨装置

Also Published As

Publication number Publication date
JPH10202519A (ja) 1998-08-04
EP0855246A3 (de) 1999-01-20

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