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1. 发明专利

JP2001304260A FLUID BEARING DEVICE AND GRINDING WHEEL SPINDLE DEVICE FOR GRINDER USING FLUID BEARING DEVICE 失效
公开(公告)号：JP2001304260A
公开(公告)日：2001-10-31
申请号：JP2000127529
申请日：2000-04-27
申请人： TOYODA MACHINE WORKS LTD
发明人： TSUJIUCHI TOSHIO , SUGIYAMA KAZUHISA
IPC分类号： B24B41/04 , B23B19/02 , B23Q1/26 , B23Q1/38 , B23Q1/70 , F16C32/06
摘要： PROBLEM TO BE SOLVED: To prevent a bearing from heating while holding the rigidity of the bearing in a fluid bearing device 10 journaling a rotary shaft 20 by a fluid pressure. SOLUTION: A bearing member 2 of this fluid bearing device 10 is provided with a U-shaped static pressure pocket 4 generating a dynamic pressure in the direction acting a loading force to the rotary shaft 20 and requiring the high rigidity and rectangular static pressure pockets 6 in the other directions. The U-shaped static pocket 4 can hold the necessary rigidity and support the loading force acting on the rotary shaft 20. On the other hand, the rectangular static pressure pockets 6 have large areas so that chances of the rotary shaft 20 being in contact with the cooled lubricating oil are increased so as to prevent it from heating.

2. 发明专利

JPH04228914A MAIN SHAFT DEVICE 失效
公开(公告)号：JPH04228914A
公开(公告)日：1992-08-18
申请号：JP40799390
申请日：1990-12-27
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGIYAMA KAZUHISA , HORI NOBUMITSU , NAKANE YASUMASA
IPC分类号： F16C25/06
摘要： PURPOSE:To prevent a change in pre-load acting on a roller bearing, regardless of the elongation of a rotary shaft due to thermal expansion. CONSTITUTION:A presser member 25 of such a material having the same elongation rate as a rotary shaft 10 is provided on a fixing member 23, so as to prevent a change in the elongation of a spring 26 to give a pre-load to a roller bearing 8. The spring 26 is thereby shifted in the same direction as the elongation of the rotary shaft 10.

3. 发明专利

JPH03149414A STATIC PRESSURE GAS LUBRICATED BEARING 失效
公开(公告)号：JPH03149414A
公开(公告)日：1991-06-26
申请号：JP28479889
申请日：1989-11-02
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGITA KAZUHIKO , SUGIYAMA KAZUHISA , SUGIMOTO FUTOSHI
IPC分类号： F16C32/06
摘要： PURPOSE:To let oscillation due to supplied gas hardly occur as well as to prevent a bearing from being damaged by providing the bearing with radial air charging grooves formed into circumferential grooves, radial air charging ports opened through air charging nozzles, exhaust grooves formed into circumferential grooves, and with exhaust ports opened in the groove bottoms of the exhaust grooves. CONSTITUTION:An air charging port 4 which is branched into radial air charging branch ports 41 and axial air charging branch ports 42, is bored toward the radial bearing surface 2 and the axial bearing surface 3 of a bearing hole so that radial air charging grooves 5 and axial air charging grooves 6 are thereby formed. In the second place, a bearing main body 1 is formed with exhaust ports 7, the tip ends of the radial air charging branch ports 41 are opened through air charging nozzles 10, and the tip ends of the axial air charging branch ports 42 are opened through air charging nozzles 11. The tip ends of the exhaust ports 7 are opened in the bottoms of exhaust grooves 8 and 9. In this case, the pressure of compressed air reaches a peak at the positions of the air charging grooves, and is gradually reduced to atmospheric pressure as air goes down to the opening positions of bearing gaps and to the positions of the exhaust ports.

4. 发明专利

JPH10259823A FLUID BEARING DEVICE 失效
公开(公告)号：JPH10259823A
公开(公告)日：1998-09-29
申请号：JP8462297
申请日：1997-03-19
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGIYAMA KAZUHISA , INAGUMA YOSHIHARU
IPC分类号： F16C17/02 , F16C17/24 , F16C32/00 , F16C32/06 , F16C33/10 , F16C37/00
摘要： PROBLEM TO BE SOLVED: To prevent a fluid bearing device from generating heat at a dynamic pressure producing land of a bearing metal. SOLUTION: An oil pocket of a bearing metal 1 of a fluid bearing is formed in a groove shaped like a letter C, and a dynamic pressure producing land 6 surrounded by the groove shaped like a letter C has a lubricating oil flowing space 7 communicating with the groove and formed in the back side of the bearing surface thereof and an oil supply port 8 for flowing the lubricating oil into the groove and the lubricating oil flowing space 7. The lubricating oil flowing space 7 is cooled by the oil flowing in the lubricating oil flowing space 7. In a bearing metal comprising two integrated layers of an inner sleeve 3 fitted in the inner peripheral surface of a bearing casing 3, the groove is composed of a groove hole 4, which is made through the inner surface and the outer surface of the inner sleeve 2, and the outer surface of the bearing casing 3, and the lubricating oil flowing space 7 is made thinner than the other region by removing the outer peripheral surface side of the inner sleeve 2.

5. 发明专利

JPH10227312A FLUID BEARING DEVICE 失效
公开(公告)号：JPH10227312A
公开(公告)日：1998-08-25
申请号：JP2988397
申请日：1997-02-14
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGIYAMA KAZUHISA , NAKAMURA HISASHI
IPC分类号： F16C32/06
摘要： PROBLEM TO BE SOLVED: To solve a problem in a fluid bearing device by which a rotary shaft is journaled by fluid pressure, that the bearing clearance of a land part for supporting the rotary shaft by dynamic pressure is narrow, thereby exothermic action occurs at the time of high speed rotation, the rotary shaft and a bearing member are locally thermally expanded in this land part, and finally seizure occurs. SOLUTION: Bearing clearances d1, d2 are so arranged that the bearing clearance d1 between a dynamic pressure generating land part 14 and a rotary shaft 20 is set larger than the bearing clearance d2 leading from static pressure pockets 6, 7 to a drain groove 10. Preferably, the bearing clearance d1 is set to be from 1.3 to twice the bearing clearance d2. Hereby, an exothermic action amount in the land part 14 can be suppressed even at high speed rotation, therefore seizure can be prevented.

6. 发明专利

JPH09155664A ATTITUDE CONTROL TYPE SLIP GUIDE DEVICE 失效
公开(公告)号：JPH09155664A
公开(公告)日：1997-06-17
申请号：JP32144895
申请日：1995-12-11
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGIYAMA KAZUHISA , SAITO TOSHIYUKI
IPC分类号： B23Q1/26 , B23Q1/38 , F16C29/02 , F16C32/06
摘要： PROBLEM TO BE SOLVED: To correct the inclination of a sliding body automatically, by communicating a right side sensor pad and a left side load supporting pocket; and a left side sensor pad and the right side load supporting pocket; respectively. SOLUTION: When a sliding body moves to the left side, and the left side of the sliding body is floated up, a clearance between a guide surface, and the land part 30b of the left side sensor pad 27b is increased. As a result, the pressure of a pressure fluid fed to a tube form groove 29b is increased, and the supporting force operated to the right side load supporting pocket 24b is made larger than the supporting force operated to the left side load supporting pocket 24a. That is, the supporting force at the load supporting pocket 24b at the opposite side to the floating-up side of the sliding body is made larger, and the inclination of the sliding body is to be corrected.

7. 发明专利

JPH06170688A SLIDE COVER DEVICE 失效
公开(公告)号：JPH06170688A
公开(公告)日：1994-06-21
申请号：JP32412292
申请日：1992-12-03
申请人： TOYODA MACHINE WORKS LTD
发明人： OTA NORIO , SUGIYAMA KAZUHISA , NAKAMURA HISASHI , WAKAZONO YOSHIO , NAYA TOSHIAKI , WATANABE YASUHISA , KOBAYASHI HISANOBU
IPC分类号： B23Q11/08
摘要： PURPOSE:To prevent a coolant, sprung by a coolant pan, from infiltrating into a slide cover device. CONSTITUTION:A plurality of covers 51 to 55 are stored in a nest shape, and each cover 51 to 55 has the third plate part 62 provided in the diagonal downward of sliding surfaces 13, 14. A block 71 is fixed in parallel to a moving direction of a table 20 further adjacent to an internal surface of the third plate part 62, to a side surface of a table guide part 12.

8. 发明专利

JPH029524A MACHINING METHOD FOR THROTTLE PASSAGE IN STATIC PRESSURE SUPPORTING DEVICE 失效
公开(公告)号：JPH029524A
公开(公告)日：1990-01-12
申请号：JP16136088
申请日：1988-06-29
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGITA KAZUHIKO , SUGIYAMA KAZUHISA , NAKANE YASUMASA
IPC分类号： B23C3/28 , B24B19/02 , F16C32/06
摘要： PURPOSE:To make it possible to complete machining in a short time and equalize the channel depth on the sides of a pocket and an oil feeding channel by turning a throttle passage connecting the oil feeding channel and a static pressure pocket around an axis in parallel with the throttle passage and machining with a cylindrical tool having width greater than the throttle passage and with a cutting blade on its outer periphery. CONSTITUTION:First, an oil feeding channel 14 and a static pressure pocket 16 are machined with the end mill of a milling machine. Next, a sliding face 13 is machined with a surface grinder in such a way that its roughness is lessened and smoothened. Furthermore, the cylindrical abrasive wheel 30 of the surface grinder is positioned in parallel with each throttle passage, and the abrasive wheel 30 is moved toward the sliding face 13, then the cross section of the throttle passage 15 is machined in a circular arc. Since the abrasive wheel 30 has, as its cutting blade, abrasive grains on its outer periphery and its width is greater than the throttle passage 15, the thermal expansion of the throttle passage 15 during the machining process becomes the same on the side of the oil feeding channel 14 and that of the static pressure pocket 16, which makes it possible to equalize the depth of the throttle passage 15 and to complete the machining in a short time.

9. 发明专利

JPS63235723A FLUID BEARING 失效
公开(公告)号：JPS63235723A
公开(公告)日：1988-09-30
申请号：JP7120687
申请日：1987-03-25
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGITA KAZUHIKO , SUGIYAMA KAZUHISA
IPC分类号： F16C39/04 , F16C17/02 , F16C32/00 , F16C32/06
摘要： PURPOSE:To prevent a temperature rise of a rotary shaft by actuating a selector valve in response to an increase in dynamic pressure effected in a dynamic pressure producing area so as to supply dynamic fluid to supply and discharge grooves. CONSTITUTION:When the rotational speed of a rotary shaft 15 increases so as to increase the dynamic pressure effected in a dynamic pressure producing area B, an electromagnetic solenoid valve 42 is operated to communicate a common port 42a with a change-over port 42b. Accordingly, fluid flows into supply and discharge grooves 25b from the solenoid valve 42 through an annular groove 25 and a supply and discharge passage 31, and a filled in the grooves 25b before it is discharged into discharge grooves. Accordingly, the temperature of the rotary shaft 15 increases, but the working fluid fed into the supply and discharge grooves 25b cools down the rotary shaft 15 which is therefore prevented from increasing its temperature.

10. 发明专利

JPH10263964A SLIP GUIDING DEVICE 失效
公开(公告)号：JPH10263964A
公开(公告)日：1998-10-06
申请号：JP8462197
申请日：1997-03-19
申请人： TOYODA MACHINE WORKS LTD
发明人： SUGIYAMA KAZUHISA , SAITO TOSHIYUKI
IPC分类号： B23Q1/26 , B23Q1/38
摘要： PROBLEM TO BE SOLVED: To reduce bearing force and prevent the floating of the front section of a table in the moving direction by providing a bearing force reducing means for the guide face of a base and a floating suppressing means for the sliding face of a moving body on the sliding face of the moving body. SOLUTION: The lubricant flowing out from an oil feed port and filling an oil groove makes lubrication for the sliding between the upper guide face 2a of a bed 1 and the sliding face 8 of a table 5. The table 5 is slid in the floating contact state by a bearing force adjusting pocket 13. The gap between a sliding face 16 and a lower guide face 2c in a static pressure pocket 18 is narrowed, the pressure in the static pressure pocket 18 is increased, and the force against the floating of the table 5 due to the dynamic pressure effect is applied to push down a lower guide member 53, i.e., the table 5. Thus, floating of the table 5 is suppressed.

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