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21. 发明专利

JPS63273523A FORMING METHOD FOR FLANGED CYLINDER MEMBER 失效
公开(公告)号：JPS63273523A
公开(公告)日：1988-11-10
申请号：JP10922187
申请日：1987-05-01
申请人： NTN TOYO BEARING CO LTD
发明人： YOSHIOKA MORIHISA , IIHARA MICHIO
IPC分类号： B21D22/28
摘要： PURPOSE:To iron a cylinder part with a die and to form a flanged cylinder member with high precision by fitting a groove provided on a cylindrical surface around a flange on one end of a cylinder part with the internal diameter part of a sectional die, inserting a wiping punch into the cylinder and moving at least one of a punch and the die. CONSTITUTION:A work W and a corresponding punch 15 are provided at the lower end of a slide and an annular groove (h) is formed on an external diameter surface of a cylinder part (a) in the circumference of a flange (f) of the work W. Then, split dies D1, D2 are assembled into a circular form and when the internal diameter part is fitted to the groove (h) of the work W, a rod 5 for loading the work, and the punch 15 fall down. Therefore, the work W passes through the inside of a die D assembled in a circular form, the external diameter part of the work W is ironed by the die D, the internal diameter surface of the work W sticks to the external circumference surface of the punch 15 to form the external circumference surface and the internal circumference surface.

22. 发明专利

JP2002213476A METHOD OF MANUFACTURING TRIPOD CONSTANT VELOCITY UNIVERSAL JOINT OUTER RACE 失效
公开(公告)号：JP2002213476A
公开(公告)日：2002-07-31
申请号：JP2001007272
申请日：2001-01-16
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SAGISAKA YOSHIHIRO , ARAGAI TAKASHI
IPC分类号： F16D3/20 , B21J5/08 , B21K1/14 , B21K1/76
摘要： PROBLEM TO BE SOLVED: To form a chamfer part of the opening edge by plastic working, to enable a molding punch of a cup part to result in a simple shape, to easily manufacture a metal mold, and to easily perform repairing even at abrasion time. SOLUTION: Not only the outer peripheral shape of a small-diameter part W3a and a large-diameter part W3b but also a recess part Wb, having a tapered surface Wba which becomes an outline shape of the chamber part 10 of an outer race 1 are formed on the end surface in an upsetting process. The tapered surface WBa formed in the upsetting process is extruded backward, while the shape in a cup molding process is maintained. Afterwards, the tapered surface Wba is formed into a finished shape and a dimension of the chamfer part 10 in a cup squeezing process.

23. 发明专利

JP2002168262A RUN-OFF PREVENTION DEVICE FOR TRIPOD-TYPE CONSTANT- VELOCITY UNIVERSAL JOINT 失效
公开(公告)号：JP2002168262A
公开(公告)日：2002-06-14
申请号：JP2000360979
申请日：2000-11-28
申请人： NTN TOYO BEARING CO LTD
发明人： TONE HIROSHI , GOTOU TATSUHIRO , ITAGAKI TAKU , KURA HISAAKI , IIHARA MICHIO , SAGISAKA YOSHIHIRO , ARAGAI TAKASHI
IPC分类号： F16D3/205 , B21K1/14
摘要： PROBLEM TO BE SOLVED: To provide a run-off prevention device for a tripod-type constant- velocity universal joint easy to mount a clip for preventing a run-off of a guide roller of a tripod member and easy to install the tripod member. SOLUTION: Eech of first chamfers 11 is formed on the internal surface of the tip of the edge of the outer-ring opening side of each small-diameter section 9 formed between track grooves 2 of the outer ring 1, and second chamfers 13 are formed at both sides of the first chamfer 11 in the direction of the periphery. A clip 15, which is cut off at one part, is mounted to a clip- mounting groove 12 formed at the first chamfer 11 and, at the clip 15, there are formed an arc section 17 along the arc-shaped internal surface 16 of the track groove 2, a linear-shaped run-off prevention section 20 along the second chamfer 13, a fitting section 18 fitted to the clip-mounting groove 12. Then, the guide roller 6 inserted into the track groove 2 is prevented from running off by the run-off prevention section 20.

24. 发明专利

JP2002130315A MANUFACTURING METHOD FOR ISOCHRONOUS JOINT 失效
公开(公告)号：JP2002130315A
公开(公告)日：2002-05-09
申请号：JP2000320408
申请日：2000-10-20
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , TAKAHARA TAIJI , SAGISAKA YOSHIHIRO , SUZUKI NOBUO
IPC分类号： F16D3/20 , B21J1/04 , B21J5/02 , B21J5/08 , B21K1/14
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method for an inner ring capable of forging with high accuracy and enhancing the lifetime of a die, though the ring is designed so as to have a track groove having a curved cross section at its bottom. SOLUTION: The manufacturing method is the one for manufacturing an inner ring 1 for an isochronous joint wherein a track groove 6 having a curved cross section at its bottom is formed at each of a plurality of points in the direction of the periphery of a spherical external surface along the direction of the axis. A semi-finished material W forged into a shape of an axial groove 6w, which is the track groove 6, is prepared on the surface of the outside diameter of an almost cylindrical shape. Then, the semi-finished material W is forged into a finished shape of the track groove 6 of the inner ring 1 of the isochronous joint having a spherical external surface. Upon the forging, the semi-finished material W is put into a row of divided dies 21, and each divided die 21 is moved to the center side. In this state, the semi-finished material W is compressed by a pair of punches 23, 24 at both ends of the material.

25. 发明专利

JP2001280360A OUTER JOINT MEMBER OF CONSTANT VELOCITY UNIVERSAL JOINT 失效
公开(公告)号：JP2001280360A
公开(公告)日：2001-10-10
申请号：JP2000091616
申请日：2000-03-29
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , TAKAHARA TAIJI , NAKANO KENICHI
IPC分类号： F16D3/227 , B21J5/06 , B21K1/14
摘要： PROBLEM TO BE SOLVED: To manufacture an outer joint member with a hollow shaft at a low cost with high accuracy while ensuring the sufficient strength. SOLUTION: This outer joint member 1 has a mouth part 10 provided with plural guide grooves 13 on an inner peripheral surface 11, and a shaft part 20 extended from the mouth part 10. This outer joint member 1 is manufactured by integrally molding the shaft part 20 and the mouth part 10, a steel material is preformed by sub-hot forging, and then the shaft part 20 is cold forged, and finished, in particular, by ironing work. The shaft part 20 is a bottomed hollow member having a cavity part 21, and a solid part 25 has a toothed part 27 for transmitting the torque.

26. 发明专利

JP2000145803A CONSTANT VELOCITY UNIVERSAL JOINT 失效
公开(公告)号：JP2000145803A
公开(公告)日：2000-05-26
申请号：JP32195098
申请日：1998-11-12
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , TAKAHARA TAIJI , UMEKIDA MITSURU
IPC分类号： F16D3/2245 , F16D3/224
摘要： PROBLEM TO BE SOLVED: To provide a constant velocity universal joint capable of preventing lubrication in the contacting part of an outer ring with a retainer and suppressing a temperature rise of the outer ring. SOLUTION: A retainer 50 for balls 40 is installed between the spherical inner surface 22 of an outer ring 20 and the spherical outer surface 31 of an inner ring 30. A circumferential groove 54 is formed at that spherical outer surface 51 of retainer 50 which is in plane contact with the spherical inner surface 22. The groove 54 holds a lubricating oil to lubricate the contacting part between the spherical inner surface 52 of the outer ring 20 and the spherical outer surface 51 of the retainer 50, and a temp. rise of the outer ring 20 caused by out of lubrication is suppressed.

27. 发明专利

JPH0768339A METHOD FOR COLD FORMING TOOTHED RING-SHAPED PARTS 失效
公开(公告)号：JPH0768339A
公开(公告)日：1995-03-14
申请号：JP24065793
申请日：1993-08-31
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SHIMIZU OSAMU
IPC分类号： B21J5/12 , B21K1/30
摘要： PURPOSE:To apply a method to forming of a pulser ring for rotation detecting and other toothed ring-shaped parts, to form high teeth, to mitigate generation of taper in teeth height and to efficiently produce. CONSTITUTION:A toothed part T is plastic worked on the outside diameter surface of a ring-shaped material W by thrusting the material W in a die 1 having teeth forming surface 3 on the inside diameter surface by a punch 2 in the axial direction. The punch 2 used in this case is a staged shaft type one having a pressurizing surface 2c which is engaged with the width surface of material W.

28. 发明专利

JPH05202945A OUTER RING OF CONSTANT VELOCITY UNIVERSAL JOINT 失效
公开(公告)号：JPH05202945A
公开(公告)日：1993-08-10
申请号：JP1452992
申请日：1992-01-30
申请人： NTN TOYO BEARING CO LTD
发明人： KURA HISAAKI , TONE HIROSHI , YOSHIOKA MORIHISA , IIHARA MICHIO
IPC分类号： B21D39/06 , B23P19/02 , F16D3/20 , F16D3/22
摘要： PURPOSE:To facilitate connecting work of an outer ring material to a shaft member, solve the problem of thermal deformation at the time of connecting work, and embody miniaturization, lightening of a constant velocity universal joint. CONSTITUTION:An outer ring is constructed with a cup-shaped outer ring material 1 made by press-molding a cylindrical material in a specified shape, and a shaft member 2 that possesses a spline part 2a at the part of its inside diameter. The outer ring material 1 possesses a guide groove 1a that becomes a power transmission part and a holder guide surface 1b, and moreover, cylindrical connecting part 1c to connect the shaft member 2. The shaft member 2 is fitted in the part of the inside diameter of the connecting part 1c, and minute projections 2b in a longitudinal direction are formed in the form of spline on its outer circumferential surface, and these projections 2b in the longitudinal direction and a plastic deformation part 1d deformed by the projections 2b in the axial direction on the inner circumferential surface of the connecting part 1c engage with each other rigidly, and restrain the outer ring material 1 and the shaft member 2 each other in the axial direction and in the circumferential direction.

29. 发明专利

JPH09151950A BEARING DEVICE FOR WHEEL OF AUTOMOBILE 失效
公开(公告)号：JPH09151950A
公开(公告)日：1997-06-10
申请号：JP31209695
申请日：1995-11-30
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO
IPC分类号： B60B35/18 , F16C19/14 , F16D3/20
摘要： PROBLEM TO BE SOLVED: To reduce the weight even in a hub bearing having a large diameter as a press molding uniformed in the whole plate thickness of the outer bearing member and inner bearing member of the hub bearing. SOLUTION: A hub bearing A has an outer bearing member 1 and an inner bearing member 2 which are formed by press molding metal thick plates. The outer bearing member 1 is formed of an integrated product of a cylindrical pilot part 1a to which the shaft part 6a of a joint outer ring 6, a flat flange part 1b fixed to a wheel, and a cylindrical bearing outer ring part 1c to the inner circumference of which a rolling body 3 is installed. The inner bearing member 2 is formed of an integrated product of a cylindrical bearing inner ring part 2a to the outer circumference of which the rolling body 3 is installed, and a flat body mounting part 2b fixed to a car body. An equal joint B is connected to the outer bearing member 1 through the body mounting part 2b, and at this time, an internal space (m) as a heat insulating space enclosed by each member 1, 2 is positively formed on the whole circumference of the joint outer ring 6.

30. 发明专利

JPH09150233A PRODUCTION OF UNIVERSAL COUPLING OUTER RING HAVING CROSS GROOVE AND DEVICE THEREOF 失效
公开(公告)号：JPH09150233A
公开(公告)日：1997-06-10
申请号：JP18780796
申请日：1996-07-17
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , TAKAHARA TAIJI , SAGISAKA YOSHIHIRO
IPC分类号： F16D3/44 , B21K1/14 , B21K1/76
摘要： PROBLEM TO BE SOLVED: To increase the satisfaction performance of inner peripheral part of cylindrical part and to improve the dimensional precision of a ball rolling grooves by pushing the cylindrical part of an outer ring into a die hole from the opening part side to execute an ironing. SOLUTION: The outer ring 1 as a pre-blank after executing Bonderite treatment is pushed into the die hole 8 from the opening part 9 side of the cylindrical part 1b contrary to the method of drawing it into the die hole 8 in the reverse direction in the conventional method. By this method, since the material flow from the base end part 10 side of the cylindrical part to the opening part 9 side changes to the material flow from the opening part 9 side to the base end part 10 side in the reverse direction, the wall thickness is not reduced between the ball rolling grooves 2. Further, since the material flow of increasing the wall thickness of the cylindrical part 1b is developed on the whole, the inner peripheral surface of the cylindrical part 1b is more and more press-fitted to a segment 4 and the dimensional precision of the ball rolling grooves 2 is improved.

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