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1. 发明专利

JPH0631602A GRINDING METHOD OF THIN-WALLED CIRCULAR BODY AND DEVICE THEREOF 失效
公开(公告)号：JPH0631602A
公开(公告)日：1994-02-08
申请号：JP20712592
申请日：1992-07-09
申请人： KOYO MACHINE IND CO LTD
发明人： INOKUCHI HISAYOSHI
IPC分类号： B23Q3/152 , B24B5/02 , B24B5/36 , B24B41/06
摘要： PURPOSE:To grind a thin-walled circular workpiece rapidly and highly precisely without generating strain due to chuck force, etc. CONSTITUTION:The end surface of a workpiece (W) that is a thin-walled circular body is fixed and supported on the circular adsorption surface 8a of an electromagnetic chuck device 1, thereby the chuck force of this circular adsorption surface 8a is weakened to the extent where the workpiece (W) is not distorted by centering action at the time of centering by a centering device 2, and it is switched to be stronger so that it keeps up with grinding force at the time of grinding process by a grinding wheel device 3, and also this switching control is performed automatically. With these means, excessive force is prevented from acting on the workpiece (W) in either of centering and grinding process, thereby generation of strain may be prevented.

2. 发明专利

JPH01264770A GRINDSTONE CORRECTING DEVICE FOR SURFACE GRINDING MACHINE 失效
公开(公告)号：JPH01264770A
公开(公告)日：1989-10-23
申请号：JP9076688
申请日：1988-04-12
申请人： KOYO MACHINE IND CO LTD
发明人： UCHIDA ATSUSHI , INOKUCHI HISAYOSHI
IPC分类号： B24B53/02
摘要： PURPOSE:To automatically correct the end face of a grindstone in an optional shape by providing a numerically controlled device to convert the information required to correct the grindstone end face into the required shape with a correcting tool into signals to drive driving units in the driving means of the correcting tool and a grindstone shaft and to output the signals to the driving units. CONSTITUTION:The information required to correct the end face of a grindstone 22 into the required shape is inputted to a computer numerically controlled device 36 to correct the grindstone 22. A control device 36 reads this information and converts it into the numerical information and outputs it to a correcting tool driving means 33 and a grindstone shaft driving means 35 respectively and drives servomotors 32 and 34 of the driving means 33 and 35 respectively. A grindstone shaft 21 and a correcting tool 31 are relatively moved by the drive of the servomotors 32 and 34. The end face of the grindstone 22 is corrected to the required shape, e.g., a shape of two or more different planes, curved faces or a combination of them.

3. 发明专利

JPH11245149A DOUBLE-END SURFACE GRINDING DEVICE 失效
公开(公告)号：JPH11245149A
公开(公告)日：1999-09-14
申请号：JP6484298
申请日：1998-02-26
申请人： KOYO MACHINE IND CO LTD
发明人： YANAGIHARA KOJI , INOKUCHI HISAYOSHI
IPC分类号： B24B7/17
摘要： PROBLEM TO BE SOLVED: To provide high grinding accuracy by securing the forcible rotational drive of a work irrespective of the shape and/thickness of the work. SOLUTION: A carrier section 10 includes a work holder 11 disposed to house and hold a work W and a rotational drive section disposed to rotary-drive this work holder 11. The work holder 11 is provided with a work pocket 20 for housing and holding the work W and formed in the shape of a circular gear member having a follower gear provided in its outer periphery, and the rotational-drive section is provided with a pair of driving gears 30 and 31 engaged with the follower gear of the work holder 11 so as to sandwich the same and a driving mechanism 32 for rotationally, driving the driving gears 30 and 31 in synchronization. Thus, the work holder 11 is forced to be rotationally driven by the pair of driving gears 30 and 31 while rotationally supported in a fixed position.

4. 发明专利

JPH0623667A ELECTROLYTIC DRESSING DEVICE FOR METAL BOND GRINDING WHEEL 失效
公开(公告)号：JPH0623667A
公开(公告)日：1994-02-01
申请号：JP20440592
申请日：1992-07-07
申请人： KOYO MACHINE IND CO LTD
发明人： INOKUCHI HISAYOSHI
IPC分类号： B24B53/00
摘要： PURPOSE:To perform uniform and stable electrolytic dressing regardless of the width of the grinding surface of a grinding wheel made of a metal bond. CONSTITUTION:By rotating an annular dressing electrode 3 around the axis of a dressing rotary shaft 11 arranged in parallel to the axis of the grinding shaft 8 of a grinding wheel 4 made of a metal bond, a dressing electrode 3 crosses a grinding surface 4a in parallel thereto and electrolytic dressing is applied on the grinding surface 4a as the dressing electrode is moved from the outside diameter side to the inside diameter side or in a reverse direction thereto. This constitution causes postioning of each part of the dressing electrode 3 orderly and uniformly from view of elapse of time, facing the all portions, ranging from the outer diameter side to the inside diameter side, of the grinding surface 4a, and performs constantly uniform dressing.

5. 发明专利

JPH02109682A MEASUREMENT OF DIMENSION OF WORK 失效
公开(公告)号：JPH02109682A
公开(公告)日：1990-04-23
申请号：JP26263588
申请日：1988-10-18
申请人： KOYO MACHINE IND CO LTD
发明人： INOKUCHI HISAYOSHI , SASAKURA SHIZUKI , ITO SHIGERU
IPC分类号： G01B21/20 , B23Q17/22 , B24B49/00 , G01B21/00
摘要： PURPOSE:To accurately measure the length of a work even if there is a thermal displacement, etc., by measuring a reference face for measuring dimension and finding the length based on the measuring value of the end face to be measured of a work and this measuring value of the reference face. CONSTITUTION:In the state of a work W being not held on a chuck in advance, the measuring part of a dimension measuring probe 30 is brought into contact with the reference face for measuring dimension and the chuck surface and these positions are measured. Based on these measuring results, the chuck projection amt. from the reference face for measuring dimension to the chuck surface is found and stored, and at the length measuring time, the measuring part of the probe 30 is brought into contact with the reference face for measuring dimension and the end face to be measured of a work W and these positions are measured. Based on these measuring results the distance from the dimension measuring reference face to the end face to be measured of the work is found and based on the measuring result of this distance and the chuck projection amt. stored in advance the length from the chuck surface of the work to the end face to be measured is found.

6. 发明专利

JPH02109673A MULTI-STAGE GRINDING DEVICE 失效
公开(公告)号：JPH02109673A
公开(公告)日：1990-04-23
申请号：JP26263388
申请日：1988-10-18
申请人： KOYO MACHINE IND CO LTD
发明人： INOKUCHI HISAYOSHI , SASAKURA SHIZUKI , ITO SHIGERU
IPC分类号： B24B5/06 , B24B7/16 , B24B19/02 , B24B25/00
摘要： PURPOSE:To improve working accuracy and to increase working efficiency by arranging a main shaft base table moved in a 1st horizontal direction parallel to the axial line of a work and in a 2nd horizontal direction orthogonal therewith and a turret head revolved centering around the shaft parallel to the 2nd horizontal direction and fitted with plural grindstones. CONSTITUTION:Multistage grinding is performed by changing grindstone 27-29 by revolving a turret head 22. In this case, the revolving center shaft of the turret head 22 is orthogonal with the axial line of the work W held on the main shaft base 6 of the main shaft base table 3 above, so the revolving direction of the turret head 22 becomes in the tangent direction of the work W and the positional dispersement by the revolving of the turret head 22 is generated in the revolving direction. So that, the positional dispersement of the turret head 22 becomes in the tangent direction of the work W and the positional dispersion of the turret head 22 in the radial direction of the work W giving effect on the work working accuracy is reduced. Consequently, the working accuracy can be improved.

7. 发明专利

JPH02109670A CORRECTING DEVICE FOR ADJUSTING WHEEL IN CENTERLESS GRINDER 失效
公开(公告)号：JPH02109670A
公开(公告)日：1990-04-23
申请号：JP26263688
申请日：1988-10-18
申请人： KOYO MACHINE IND CO LTD
发明人： MAEDA MICHIO , OYAMA YOSHIHISA , INOKUCHI HISAYOSHI
IPC分类号： B24B5/30
摘要： PURPOSE:To easily perform grinding and the re-correction of an adjusting wheel by providing a correction means equipped with a correction tool correcting the adjusting wheel on the revolving base fixed to a revolving shaft. CONSTITUTION:At correction time, a bearing housing 9 is fixed to an adjusting wheel base 4 so that an adjusting wheel 1 is inclined by the desired inclination first, also a revolving shaft 8 is fixed to the adjusting wheel base 4 so that the moving direction of a correction tool 33 is inclined by the desired correction angle for this inclined adjusting wheel 1 and correction is executed in the state like this. Grinding is then performed in the state of as it is and at the re- correction time, the correction is performed in the state of as it is. By the way the machine rigidity is increased and high accuracy can be obtd. by fitting a correction device 2 not to a bearing housing 9 but to the adjusting wheel base 4.

8. 发明专利

JP2001054842A CENTERLESS GRINDING METHOD AND CENTERLESS GRINDING MACHINE 失效
公开(公告)号：JP2001054842A
公开(公告)日：2001-02-27
申请号：JP22800599
申请日：1999-08-11
申请人： KOYO MACHINE IND CO LTD
发明人： YASHIKI KATSUJI , INOKUCHI HISAYOSHI
IPC分类号： B24B49/10 , B24B5/18
摘要： PROBLEM TO BE SOLVED: To provide a centerless grinding technique capable of grinding the outer peripheral surface of a workpiece with high machining accuracy even with rotational deviation on the outer peripheral surface of a regulating wheel, and optimum for grinding the outer diameter of a small diameter workpiece for mass production requiring high productivity. SOLUTION: In this in-feed type centerless grinding method for feeding a rotating grinding wheel 1 relatively into a workpiece W rotatably supported by a blade 3 and a regulating wheel 2, to grind the cylindrical outer peripheral surface of the workpiece W, the rotating position of the regulating wheel 2 and the in-feed of the grinding wheel 1 to the workpiece W are synchronized to grind the cylindrical outer peripheral surface of the workpiece W. The relation between the in-feed position of the grinding wheel 1 and the abutting position of the regulating wheel 2 and workpiece W is thereby always constant, and the cylindrical outer peripheral surface of the workpiece W can be ground with high machining accuracy even with rotational deviation on the outer peripheral surface 2a of the regulating wheel 2.

9. 发明专利

JPH06277997A CENTERLESS GRINDER 失效
公开(公告)号：JPH06277997A
公开(公告)日：1994-10-04
申请号：JP9259593
申请日：1993-03-26
申请人： KOYO MACHINE IND CO LTD
发明人： INOKUCHI HISAYOSHI , YAMAMOTO KEIICHI
IPC分类号： B24B5/18 , B24B5/22
摘要： PURPOSE:To provide a centerless grinder having a structure by which an assembling width and steps of both grinding wheels can be regulated continuously variably even when the grinding wheels are rotated. CONSTITUTION:A movable side grinding wheel 2 is made independent completely from a reference side grinding wheel 1, and when the movable side grinding wheel 2 is moved in the X axis direction in parallel with a shaft line of a grinding wheel shaft of the reference side grinding wheel 1, an assembling width of both grinding wheels 1 and 2 are regulated, and when the movable side grinding wheel 2 is moved in the Y axis direction orthogonal to the shaft line of the grinding wheel shaft of the reference side grinding wheel 1, steps of both grinding wheels 1 and 2 are regulated. Since the main shaft stand 4 itself is moved, the movement of the movable side grinding wheel 2 becomes possible even when the grinding wheel 2 is rotated, and since the grinding wheel 2 and a grinding wheel shaft 12 are fixed integrally to each other, looseness is not caused in the grinding wheels according to movement regulation of the grinding wheel 2.

10. 发明专利

JPH06270045A CENTERLESS GRINDING FOR STEPPED SHAFT 失效
公开(公告)号：JPH06270045A
公开(公告)日：1994-09-27
申请号：JP8568393
申请日：1993-03-19
申请人： KOYO MACHINE IND CO LTD
发明人： INOKUCHI HISAYOSHI , TANISHIKI KATSUJI
IPC分类号： B24B5/22 , B24B5/30
摘要： PURPOSE:To prevent the reduction of the working precision due to the abrasion of an adjusting wheel which is generated by slip, permit the easy adoption in an existing centerless grinder, etc., obviate the necessity of separately keeping the correction time for the adjusting wheel, and increase the production faculty. CONSTITUTION:In the centerless grinding for a stepped shaft, a workpiece 1 is ground by a grinding wheel 3, controlling the revolution of the workpiece 1 on a receiving plate 4, by an adjusting wheel 2 having the shape corresponding to the stage difference shape of an aimed stepped shaft, and the finishing to the stepped shaft having a prescribed step difference shape is performed. During this grinding work, the surface shape of the adjusting wheel 2 is corrected continuously or intermittently, by cutting-in a shaping tool 5, so that the fine cutting-in quantity over the abrasion quantity of the adjusting wheel 2 is generated without interrupting the grinding work.

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