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21. 发明专利

JPH0341216A FLUID BEARING 失效
公开(公告)号：JPH0341216A
公开(公告)日：1991-02-21
申请号：JP17291989
申请日：1989-07-06
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGIYAMA KAZUHISA , SAITO TOSHIYUKI
IPC分类号： F16C32/06
摘要： PURPOSE:To change the rigidity of a fluid bearing to a specified level in a short period of time to maintain it by controlling a fluid control valve by a pressure controller according to the measured values of the temperature of oil in an oil tank and the supply pressure of lubricating oil and compensating variation in rigidity due to variation in oil temperature by variation in supply pressure of lubricating oil. CONSTITUTION:A temperature sensor 9 is provided in an oil tank 6, and a pressure sensor 11 is provided near a bearing pocket 4 in an oil feed line 8. A suppressing force to oil pressure in a fluid control valve 13 is increased and decreased by a pressure controller 14 according to the measured values of the temperature of oil in the oil tank 6 and the supply pressure of lubricating oil to control the oil pressure of the lubricating oil flowing through the feed line 8. By this, variation in bearing rigidity due to variation in oil temperature can be compensated by variation in lubricating oil supply pressure and, therefore, the bearing rigidity can be changed to a specified level in a short period of time to always maintain a rigidity. Accordingly, even when abrupt change in temperature is produced, the rigidity can be changed to a specified level immediately.

22. 发明专利

JPS6246021A TIGHTENING DEVICE 失效
公开(公告)号：JPS6246021A
公开(公告)日：1987-02-27
申请号：JP18290985
申请日：1985-08-22
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGITA KAZUHIKO , SUGIYAMA KAZUHISA
IPC分类号： H02K1/28 , F16D1/06 , F16D1/09
摘要： PURPOSE:To prevent a tapered fitting part from being loosened and slipped or to prevent a tapered sleeve from being damaged, by mounting a resilient fixed pre-load member, which absorbs the displacement of thermal expansion and contraction of the tapered sleeve, to be interposed between a unit and the tapered sleeve. CONSTITUTION:A tightening device, mounting a belleville spring 16 to be interposed between a nut 4 and the rear end surface of a tapered sleeve 3, gives a fixed pre-load to the tapered sleeve 3. As a result, the device presses the tapered sleeve 3, when it performs thermal expansion, in a tightening direction by the fixed pre-load pressure due to the belleville spring 16, holding a regular tapered fit. While the device displaces the tapered sleeve 3, when it contracts, in a loosening direction by compressing the belleville spring 16 through a tapered surface fit with a tapered external diameter 1a.

23. 发明专利

JPS61209834A STATIC PRESSURE SLIDE TABLE 失效
公开(公告)号：JPS61209834A
公开(公告)日：1986-09-18
申请号：JP5151785
申请日：1985-03-14
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGITA KAZUHIKO , SUGIYAMA KAZUHISA , SAKAKIBARA NORIO
IPC分类号： B23Q1/00 , B23Q1/38 , B23Q1/58 , B23Q1/60 , B23Q5/40 , B23Q5/44
摘要： PURPOSE:To prevent a relative error from taking place between a table and a static pressure joint when sliding and prevent decrease in feeding accuracy resulting from said error by guiding and supporting both of said table and said static pressure joint with a common reference guide. CONSTITUTION:A cutout 23 having a pair of static pressure surfaces 24 which is symmetrically provided to the center of a table 20, is provided in the table 20 perpendicularly to its longitudinal direction. And, a reference guide 11 is exposed in the table 20 while first static pressure slide devices 25 are provided on both end parts in the longitudinal direction of the table 20. Thereby, the table 2 and a static pressure joint 30 are guided and supported by a common reference guide 11 via the first and second static pressure slide devices 25, 32 respectively. The static pressure joint 30 which is positioned in the cutoff 23, is floatingly joined to the table 20 via static pressure thrust devices 35 provided on both end faces 36 in the longitudinal direction. This static pressure joint 30 is reciprocated by means of a feed screw 41, to reciprocate the table 20.

24. 发明专利

JP2003103462A TRUING DEVICE IN GRINDER HAVING TWO WHEEL SPINDLE STOCKS 审中-公开
公开(公告)号：JP2003103462A
公开(公告)日：2003-04-08
申请号：JP2001297905
申请日：2001-09-27
申请人： TOYODA MACHINE WORKS LTD
发明人： ITO NAOKI , KATSUTA MAMORU , SOMA SHINJI , SUGIYAMA KAZUHISA
IPC分类号： B24B53/053 , B24B53/00
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive truing device by supporting so as to rotatively drive a finishing grinding wheel truer and a superfinishing grinding wheel truer respectively truing a finishing grinding wheel and a superfinishing grinding wheel with an interval in between on a workpiece support device. SOLUTION: A workpiece is supported by the workpiece support device and it is rotatively driven around a rotation axis. The first and second wheel spindle stocks 27 and 28 are mounted so that they are individually moved in a parallel direction and a perpendicular direction to the rotation axis by a feeding device. The finishing grinding wheel 34 and the superfinishing grinding wheel 35 are respectively supported so that they are rotatively driven on the first and second wheel spindle stocks. A housing 41 of the truing device 40 with a truer shaft supported so that it can be rotatively driven in parallel with the rotation axis is provided integrally with the workpiece support device 15 so as to face the first and second wheel spindle stocks. The finishing grinding wheel truer and the superfinishing grinding wheel truer are attached to the truer shaft with the interval wider than a width of the finishing grinding wheel or the superfinishing grinding wheel having a wider width.

25. 发明专利

JP2003103460A METHOD AND DEVICE FOR GRINDING WORKPIECE SURFACE INTO SUPERFINISHED SURFACE HAVING OIL RETAINING PART 审中-公开
公开(公告)号：JP2003103460A
公开(公告)日：2003-04-08
申请号：JP2001297919
申请日：2001-09-27
申请人： TOYODA MACHINE WORKS LTD
发明人： ITO NAOKI , KATSUTA MAMORU , SOMA SHINJI , SUGIYAMA KAZUHISA
IPC分类号： B24B49/04 , B24B5/42 , B24B27/00 , B24B51/00 , B24B53/00 , B24B53/053
摘要： PROBLEM TO BE SOLVED: To grind a superfinished surface having oil retaining parts by using a superfinishing grinding wheel to apply superfinish grinding to a finished face applied with finish grinding of a degree leaving bottoms of a profile curve showing surface roughness of the finished face applied with finish grinding by a finishing grinding wheel. SOLUTION: A workpiece is applied with finish grinding to a predetermined size by the finishing grinding wheel, and the finished face is applied with superfinish grinding by the superfinishing grinding wheel to the degree leaving the bottoms of the profile curve showing the surface roughness of the finished face applied with finish grinding as the oil retaining parts while measuring an outer diameter of the workpiece by a size measuring device.

26. 发明专利

JP2003094303A MACHINING METHOD AND DEVICE 审中-公开
公开(公告)号：JP2003094303A
公开(公告)日：2003-04-03
申请号：JP2001294448
申请日：2001-09-26
申请人： TOYODA MACHINE WORKS LTD
发明人： KATSUTA MAMORU , SUGIYAMA KAZUHISA , SOMA SHINJI , ITO NAOKI
IPC分类号： B24B5/42
摘要： PROBLEM TO BE SOLVED: To provide grinding and superfinishing methods and a machining device capable of shortening the working time. SOLUTION: This machining method is so formed that grinding wheels and superfinishing grinding wheels are selectively aligned relative to respective machining counterparts of a work having a plurality of machining counterparts rotatably supported to a single axis and axially separated from one another, cross-feeding the grinding wheels and the superfinishing grinding wheels to the respective machining counterparts in the alignment position to grind the respective machining counterparts into the grinding size, and the grinding counterparts ground into the grinding size are superfinished into the superfinishing size. The superfinishing grinding wheels are made to wait in waiting positions with a prescribed interval separated from another machined part ground into the grinding size, at least, in the initial stage of the process for the grinding wheel grinding one of the grinding counterparts. The prescribed interval is determined based on the cross feed position of the superfinishing grinding wheel when another machining counterpart is machined into the superfinishing size.

27. 发明专利

JPH0740208A GRINDING METHOD 失效
公开(公告)号：JPH0740208A
公开(公告)日：1995-02-10
申请号：JP19449593
申请日：1993-08-05
申请人： TOYODA MACHINE WORKS LTD
发明人： KITAJIMA MASATO , MUKAI RYOHEI , SUGIYAMA KAZUHISA , NAYA TOSHIAKI , HATTORI KAZUYA
IPC分类号： B24B5/04 , B24B1/00
摘要： PURPOSE:To extensively shorten machining cycle time by way of shortening time until the time when a sizing signal is provided. CONSTITUTION:After rapidly advancing a grinding wheel 21 against a work W to a position including machining allowance for rough-grinding+precise grinding, the work W is advanced to the left by a specified amount and the machining allowance is roughly ground by traverse grinding, and thereafter, by advancing the grinding wheel 21, the work W is finely ground by plunge grinding until a sizing signal is provided from a sizing device 18, and at the stage when the sizing signal is provided, by advancing the work W to the left, it is transferred to one pass traverse grinding.

28. 发明专利

JPH04282021A GUIDING DEVICE FOR MOVABLE BODY 失效
公开(公告)号：JPH04282021A
公开(公告)日：1992-10-07
申请号：JP4486191
申请日：1991-03-11
申请人： TOYODA MACHINE WORKS LTD , SOGO SHINICHI
发明人： SOGO SHINICHI , UNNO KUNIHIKO , SUGITA KAZUHIKO , SUGIYAMA KAZUHISA
IPC分类号： B23Q1/26 , B23Q1/38 , F16C32/06
摘要： PURPOSE:To guide and support a movable body with high accuracy by means of hydrostatic gaseous bearing with infinite rigidity. CONSTITUTION:A movable bush 27 is arranged between a horizontal guide face 13 and a bearing main body 21 for a truck 10, vertically in a free displacement. Between the bush 27 and the main body 21 a pressure chamber 29 is formed. A bearing gap of hydrostatic gaseous bearing is formed between the bush 27 and the guide face 13. The pressure chamber 29 is communicated with a gas supply source via a first throttle, and with the bearing gap via a second throttle 34. Spring members 31, 32 are provided so that they resiliently deform when the bush 27 is subjected to displacement.

29. 发明专利

JPH04244623A STATIC PRESSURE GASEOUS BEARING 失效
公开(公告)号：JPH04244623A
公开(公告)日：1992-09-01
申请号：JP945991
申请日：1991-01-30
申请人： TOYODA MACHINE WORKS LTD , SOGO SHINICHI
发明人： SOGO SHINICHI , UNNO KUNIHIKO , SUGITA KAZUHIKO , SUGIYAMA KAZUHISA
IPC分类号： F16C32/06
摘要： PURPOSE:To easily realize a thrust static gaseous bearing having infinite rigidity in simple formation. CONSTITUTION:A movable bush 14 is provided between a bearing body 10 and the flange part of a rotary shaft 11 so as to be movable in the axial direction of the rotary shaft 11, and a pressure chamber 17 is formed between the movable bush 15 and the bearing body 10, and a bearing gap for a thrust static pressure gaseous bearing is formed between the movable bush 15 and the flange. The pressure chamber 17 communicates with a gas supply source through the first restriction 18 and with the bearing gap through the second restriction 23, and a spring member 19 to elastically deform in the case where the movable bush 15 has moved is provided.

30. 发明专利

JPS6352941A ROTATION POWER TRANSMISSION DEVICE FOR PRECISION MACHINING DEVICE 失效
公开(公告)号：JPS6352941A
公开(公告)日：1988-03-07
申请号：JP19349886
申请日：1986-08-19
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGITA KAZUHIKO , SUGIYAMA KAZUHISA , SAKAKIBARA NORIO , SHIMA TOSHIHIKO
IPC分类号： B23Q3/08 , B23Q5/04
摘要： PURPOSE:To prevent vibration of a main spindle and to enable high-precise machining of a workpiece, by a method wherein a vacuum pressure is exerted on or released from a vacuum chuck from the drive shaft side through a main spindle line, formed in a main spindle, and a bellows coupling. CONSTITUTION:By means of a vacuum chuck 60, on or from which a vacuum pressure is exerted or released from the drive shaft 30 side through a main spindle line 61, formed in a main spindle 20, and a bellows coupling 40, a work piece is clamped and unclamped to and from the front end of the main spindle 20. When the main spindle 20 to which a workpiece is clamped is accelerated from a stop state to a machining rotation speed with the aid of a main spindle drive motor 35, a friction coupling 50 is coupled, and transmission torque be tween the main spindle 20 and the drive shaft 30 is increased, When the machin ing rotation speed of the main spindle 20 is increased to a given value, the friction coupling 50 is released from coupling, and low load machining is applied on the workpiece. Upon completion of machining, the friction coupling 50 is engaged again, and brake is applied on the drive shaft 30 side to bring the main spindle 20 into a stop.

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