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1. 发明专利

JPH06262491A WORKPIECE DISCRIMINATING DEVICE 失效
公开(公告)号：JPH06262491A
公开(公告)日：1994-09-20
申请号：JP7646693
申请日：1993-03-11
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： TSUCHIYA KOJI , YOKOI MASAHIKO , YAMAMOTO SHUZO , YAMASHITA SATOSHI
IPC分类号： B23Q17/00
摘要： PURPOSE:To surely detect erroneous setting of a slider by detecting a turn position changed of a phase determining arm by an upper or lower patch, brought into contact with two kinds of workpieces, by a vertical set position of the slider loaded with the workpiece of crankshaft or the like. CONSTITUTION:A grinder or the like is provided with a phase determining arm 9 for positioning a pin P on a spindle rotary axial line with a reference surface 8 brought into contact with a reference arm of a chuck device by rotating a workpiece (crankshaft) W, loaded on a slider of the chuck device, about a journal J. This phase determining arm 9 is provided with upper/lower part patches 11, 12 brought into contact with upper/lower surfaces of pins PA, PB and a limit switch 14. By an operating condition of the limit switch 14 by a dog 15 synchronized with turn driving the phase determining arm 9, a turn position of the phase determining arm 9 is detected to be changed when the upper or lower part patch 11 or 12 is brought into contact with the workpiece W, and a wrong set position is detected of the slider which must correspond to the workpiece W.

2. 发明专利

JPH07171703A ECCENTRIC CHUCK DEVICE FOR CRANKSHAFT 失效
公开(公告)号：JPH07171703A
公开(公告)日：1995-07-11
申请号：JP34455993
申请日：1993-12-20
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： TSUCHIYA KOJI , ITO AKIO , IMAYAMA MASAHIRO
IPC分类号： B23B31/10 , B23B31/02
摘要： PURPOSE:To provide an eccentric chuck device for crankshafts, which is capable of easily changing the eccentricity of the chuck body in a short time by rotating and changing the angular position of the end cap of a cylinder which allows the chuck body to move in the eccentric direction. CONSTITUTION:Plural step parts 20 different from each other in height in the eccentric direction of a chuck body 4, are provided on the end cap 17a of a cylinder which allows the chuck body 4 to move the eccentric direction. An abutting part 21, the purpose of which is to abut on one of the plural step parts 20, is provided on a piston 18a, and the end cap 17a is adapted to be selectively fixed at the angular position, by means of which one of the plural step parts 20 can abut on the abutting part 21.

3. 发明专利

JPH06262530A ELECTRODEPOSITED STRAIGHT CUP GRINDING WHEEL 失效
公开(公告)号：JPH06262530A
公开(公告)日：1994-09-20
申请号：JP8108593
申请日：1993-03-17
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP , TOYODA VAN MOPPES LTD
发明人： TSUCHIYA KOJI , ISHIYAMA HAJIME , YOSHIOKA YUJI , SUGITA SATOSHI , OYA TADAHIKO , YOSHIMURA HIROHITO , OIWA MITSURU
IPC分类号： B24D3/00 , B24D3/06 , B24D7/00
摘要： PURPOSE:To provide a straight cup type electrodeposited grinding wheel that satisfies the reduction of grinding force prerequisite to grinding an aluminum material as well as all the condition of favorableness in surface roughness, coolant supply and chip discharge. CONSTITUTION:A mesh groove 4 is installed over the whole circumference of an end face 2 of a metal core 1 in a straight cup type grinding wheel so as to form a square flat part 3 whose one side length is 0.2mm to 1.0mm, and a diamond abrasive grain 5 of 120mum to 600mum in grain size is electrodeposited to this flat part 3.

4. 发明专利

JPH06250713A FEED CONTROLLER 失效
公开(公告)号：JPH06250713A
公开(公告)日：1994-09-09
申请号：JP3546893
申请日：1993-02-24
申请人： TOYODA MACHINE WORKS LTD
发明人： SAWAKI NORIKAZU , ISHIKAWA TOSHIO , SANPEI HIDEYUKI , ITO YOICHI , TSUCHIYA KOJI
IPC分类号： B23Q15/22 , G05B19/18 , G05B19/404
摘要： PURPOSE:To perform correction so that the start position of next operation is securely kept by commanding feeding operation in two stages wherein a feed speed is switched from high to low so that a return to the start position of following operation is made after reverse fast forwarding. CONSTITUTION:A feed mechanism D is forwarded fast by a reverse fast forwarding means E to a 1st command position P1 in the opposite direction from next operation before the next operation when it is confirmed that current operation reaches a target position X1. Then a return correcting means F returns the feed mechanism D at an intermediate speed from the 1st command position P1 to a 2nd command position P2 in the same direction as the feed direction of the next operation and then sends it at a low speed to the start position of the next operation matching the target position X1 of the current position. Namely, a uniaxial feed mechanism D, for example, is overfed to beyond the start position X2 of the next operation to the position P1 which deviates by a feed quantity x1 larger than a backlash error DELTAL, and then makes an approach at the intermediate speed in the next feed direction and further approaches the start position P2 of the next operation at the low speed, so the feed mechanism D can be stopped accurately at the target position.

5. 发明专利

JPH01183365A STEADY REST IN POLISHING MACHINE 失效
公开(公告)号：JPH01183365A
公开(公告)日：1989-07-21
申请号：JP648288
申请日：1988-01-14
申请人： TOYODA MACHINE WORKS LTD
发明人： MAEKAWA KENICHI , AKAHA HITOSHI , TSUCHIYA KOJI
IPC分类号： B23Q1/76 , B24B41/06
摘要： PURPOSE:To remove uniformly deflection in grinding and improve grinding accuracy by adjustably setting the advance amount of a contact piece corresponding to the rigidity of polishing portion and providing a controller for controlling a contact piece drive device according to the set advance amount. CONSTITUTION:When a shaft-shaped workpiece (crankshaft) W having both ends supported in grinding is pressed and supported by a contact piece at the opposite side to a grinding wheel G, contact piece drive devices 39, 40 are operated by a controller 50 so that the contact piece is advanced toward a grinding portion by a feed-in amount corresponding to the rigidity of grinding portion of the workpiece. Under the condition of contact piece thus set, the workpiece W is ground by the grinding wheel G. Next separate grinding portions are repetitively axially similarly ground. Thus, the feed-in of contact piece is varied at every grinding portion according to the unevenness of rigidity to prevent the workpiece W from deflection and remove uniformly the deflection in grinding for improving grinding accuracy.

6. 发明专利

JPH05293756A 失效
公开(公告)号：JPH05293756A
公开(公告)日：1993-11-09
申请号：JP9805292
申请日：1992-04-17
申请人： TOYODA MACHINE WORKS LTD
发明人： TSUCHIYA KOJI , TODA KIKUJIRO , ONO KAORU , YAMAGUCHI SHOJI
IPC分类号： B24B53/00 , B24B53/053
摘要： PURPOSE:To shorten a moving distance between a grinding wheel bed and a table, to reduce the size of a bed which supports a grinding wheel and the table, and in turn to reduce the size of a grinding device itself by arranging a grinding wheel correcting device between a headstock and a tailstock. CONSTITUTION:A grinding wheel correcting device 6 is arranged in the position of a state wherein the center of a tailstock 4 or a work W itself is inserted in the insertion hole 65a of a shaft part 65 for supporting a grinding wheel correcting tool 67 through a bearing. The grinding wheel correcting tool 6 is arranged in a position wherein a distance in an axial direction from the grinding position of the work W is shortmost. As a result, a distance by which a grinding wheel bed 5 located in a work grinding completion position is moved to a position facing the grinding wheel correcting device 6 is decreased. Thereby, the moving ranges of the grinding wheel 5 and a table 2 can be set to a low value, the size of a bed 1 to support the grinding wheel bed 5 and the table 2 can be decreased, and moving time thereof can be shortened.

7. 发明专利

JPS61257771A FEED CONTROLLER FOR GRINDING MACHINE 失效
公开(公告)号：JPS61257771A
公开(公告)日：1986-11-15
申请号：JP10029685
申请日：1985-05-10
申请人： TOYODA MACHINE WORKS LTD
发明人： KOBAYASHI AKIYOSHI , TSUCHIYA KOJI , ENOMOTO MINORU , OMURA HARUO
IPC分类号： B24B47/22 , B24B47/20 , B24B47/25
摘要： PURPOSE:To compensate abrasion caused through correction of grinding wheel accurately by providing means for collectively compensating the feed error to be produced in grinding wheel table feed mechanism and error to be produced in cutting mechanism of correcting tool in numeric controller of feed controller for grinding machine. CONSTITUTION:Error correction corresponding with sum of positioning error (e2) of correcting tool 60 to be produced upon cutting of correcting tool 60 by commanded amount and the positioning error (e3) under corrective advance of grinding wheel 70 upon correction of grinding wheel 73 is operated. then corrective advance of grinding wheel 70 after correction of grinding wheel is corrected by said operated amount. Consequently, the grinding face Ga of the grinding wheel 73 is advanced accurately by the amount same with the correcting margin and set at same position with the grinding wheel 73 prior to correction through correcting tool 60.

8. 发明专利

JPH03270874A GRINDING LIQUID NOZZLE INTERLOCKED WITH FRONT COVER OF GRINDING WHEEL 失效
公开(公告)号：JPH03270874A
公开(公告)日：1991-12-03
申请号：JP6967490
申请日：1990-03-22
申请人： TOYODA MACHINE WORKS LTD
发明人： TSUCHIYA KOJI , MARUYAMA TOSHIO , YAMAGUCHI MASAKAZU , OISHI KENZABURO , SANO SHOICHI , NONOYAMA MAKOTO
IPC分类号： B24B55/02 , B24B55/04
摘要： PURPOSE:To control the attitude of a grinding liquid nozzle automatically so that the grinding liquid is properly supplied to the grinding point, throughout the diameter range of the grinding wheel from its maximum to the minimum in linkage with rotation of a grinding stone front cover, by guiding a cam follower installed on the nozzle slidably into a cam groove in a cam member, and coupling the nozzle with the front cover. CONSTITUTION:When a grinding wheel front cover 4 is rotated with axial movement of a working shaft 7 of an actuator 6, a grinding liquid nozzle 11 mounted coaxially on the working shaft 7 rotates round a cam follower 13 in the same direction as the front cover 4. At this time, the cam follower 13 is guided along the slope of a cam groove 9 in a cam member 10 fixed to the front cover 4, and the attitude of the nozzle 11 is so controlled as to be directed to the grinding point at all times. Thereby the grinding liquid is always fed to the grinding point properly.

9. 发明专利

JPS61188066A GRINDING MACHINE 失效
公开(公告)号：JPS61188066A
公开(公告)日：1986-08-21
申请号：JP2366085
申请日：1985-02-12
申请人： TOYODA MACHINE WORKS LTD
发明人： TERAHARA GORO , TSUCHIYA KOJI , FUJII MINORU
IPC分类号： B24B19/16
摘要： PURPOSE:To make improvements in grinding efficiency well promotable, by forming a first grinding surface performing plunge grinding and a second grinding surface performing traverse grinding both in a grinding wheel, in case of a grinding job for a nozzle needle of a fuel injection valve. CONSTITUTION:A grinding wheel 14 grinding a nozzle needle 4 is provided with a first grinding surface 14a corresponding to a first conical machining surface 1 and a stepped end face 3 and a second grinding surface 14b corresponding to a second machining surface 2 at its outer circumferential end face via a concavity part 14c. And, the first conical machining surface 1 of the nozzle neeldle 4 and a corner of the stepped end face 3 are subjected to plunge grinding with the first grinding surface 14a of the grinding wheel 14, then this wheel 14 is slidden to some extent, and the second conical machining surface 2 is cut into between grinding with the second grinding surface 14b. Thus, a grinding job for two different process is performable with one machine alone and, what is more, improvement of efficiency in grinding is well promotable.

10. 发明专利

JPH05329701A WORK SUPPORTING DEVICE 失效
公开(公告)号：JPH05329701A
公开(公告)日：1993-12-14
申请号：JP13369792
申请日：1992-05-26
申请人： TOYODA MACHINE WORKS LTD
发明人： AOYAMA MASAYOSHI , SAWAKI NORIKAZU , TSUCHIYA KOJI
IPC分类号： B23B23/00 , B23B5/22
摘要： PURPOSE:To shorten time spent for the independent advance of a tailstock center so as to shorten cycle time by providing a controller to synchronously execute the one step advance of the tailstock center and the advance of a spindle center and to continuously execute the two step advance of the tailstock center. CONSTITUTION:First, a moving forward and backward driving device for a spindle ram 10 makes a spindle center 7 advance just before it abuts on a work 3. A moving forward and backward driving device for a tailstock ram 19 synchronously makes a tailstock center 18 execute one step advance just before it abuts on the Work 3. After the advance of the spindle center 7, the moving forward and backward driving device for a tailstock ram 19 makes the tailstock center execute two step advance to sandwichedly hold the work between the spindle center and itself. Next, the spindle center is moved forward and backward with the work supported in the above state to longitudinally position the work. Next a rotary device rotating drives the work for driving the positionedly supported work. After grinding process, the tailstock center is moved backward, and the spindle center is then moved backward.

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