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1. 发明专利

FR2775502B1 未知
公开(公告)号：FR2775502B1
公开(公告)日：2001-02-09
申请号：FR9902435
申请日：1999-02-26
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , YAKAHARA YASUSHI , YAMAGUCHI MASAMI
IPC分类号： B21D22/26 , B21K1/76 , F16D3/20 , F16D3/224 , B21K7/00
摘要： A constant velocity joint includes an outer race (1) having a spherical inner surface (2) with track grooves (3) each extending in an axial direction thereof, an inner race having a spherical outer surface (5) formed with track grooves (6) equal in number to the number of the track grooves (3) in the outer race (1), a plurality of torque transmitting balls (7) sandwiched between the inner race (4) and the outer race (1) and accommodated in part in the track grooves (6) in the inner race (4) and in part in the track grooves (3) in the outer race (1), and a cage (8) for retaining the torque transmitting balls (7) while being guided by and between the spherical inner surface (2) of the outer race (1) and the spherical outer surface (5) of the inner race (4). This constant velocity joint of the structure described above is featured in that at least the track grooves (3) in the outer race (1) and an entry chamfer (11) of the outer race (1) are formed by a plastic working process. A method of making the outer race (1) in the constant velocity joint is also provided.

2. 发明专利

GB2312182A Cold forming method and apparatus 未知
公开(公告)号：GB2312182A
公开(公告)日：1997-10-22
申请号：GB9715112
申请日：1994-03-29
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SHIMIZU OSAMU , SERA AKIRA
IPC分类号： B21J5/12 , B21K1/30 , G01D5/20
摘要： A cold forming method for plastic deformation of toothed ring-shaped products WO having a tooth profile portion T in at least one of the outer or inner peripheral surfaces thereof utilises die 1 with a tooth forming part 4 and a tip shaping part 5 positioned in the groove of the tooth forming part 4. A ring-shaped blank W is pressed and passed into the die 1 by a punch 2. When processing a ring-shaped product having a tooth profile portion in an inner peripheral surface, the tooth forming part 4 and tip shaping part 5 are provided on the outer circumference of a lower punch, and the blank is pressed and passed into the lower punch by an upper punch (Fig. 10A).

3. 发明专利

DE19639677B4 未知
公开(公告)号：DE19639677B4
公开(公告)日：2008-06-19
申请号：DE19639677
申请日：1996-09-26
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , TAKAHARA YASUJI , SAGISAKA YOSHIHIRO
IPC分类号： B21K1/46 , F16D3/44 , B21K1/14 , B21K1/76
摘要： A method for and an apparatus of producing an outer member of a universal joint having cross-grooves are provided in order to increase replenishability of the inner peripheral portion of the outer member. The outer member 1 is provided in a preformed material including a shaft 1a and a cylindrical portion 1b. A punch set 5 is fitted within the cylindrical portion 1b. The punch set is expandable and constrictable in the radial direction and includes a plurality of protrusions 3 having a configuration complementary to that of the cross-grooves. The cylindrical portion 1b is pressed into a die bore 8, starting with its opening portion 9, for performing an ironing operation.

4. 发明专利

GB2312182B cold forming method and apparatus 未知
公开(公告)号：GB2312182B
公开(公告)日：1997-12-10
申请号：GB9715112
申请日：1994-03-29
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SHIMIZU OSAMU , SERA AKIRA
IPC分类号： B21J5/12 , B21K1/30 , G01D5/20

5. 发明专利

DE4411410B4 未知
公开(公告)号：DE4411410B4
公开(公告)日：2005-12-29
申请号：DE4411410
申请日：1994-03-31
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SHIMIZU OSAMU , SERA AKIRA
IPC分类号： B21J5/12 , B21K1/30 , G01D5/20
摘要： A cold forming method for plastic deformation process of toothed ring-shaped products (W0) have a tooth profile portion (T) in at least one of the outer peripheral surface and inner peripheral surface thereof. When processing a ring-shaped product (W0) having a tooth profile portion (T) in the outer peripheral surface, a die (1) is utilized. The die (1) has a tooth forming part (4) having a shape corresponding to the shape of the tooth profile portion (T) of the ring-shaped product (W0) in its inner peripheral surface, and, if necessary, a tip shaping part (5) positioned in the groove of the tooth forming part (4). A ring-shaped material (W) is pressed and passed into the die (1) by a punch (2) in a round shaft shape in the axial direction, and processed. When processing a ring-shaped product (W1) having a tooth profile portion (T) in an inner peripheral surface, the tooth forming part (4) and tip shaping part (5) are provided on the outer circumference of a lower punch ( 11), and the ring material (W) is pressed and passed into the lover punch (11) by an upper punch (12), and processed.

6. 发明专利

FR2775502A1 Constant velocity transmission joint especially for motor vehicle wheel shaft 未知
公开(公告)号：FR2775502A1
公开(公告)日：1999-09-03
申请号：FR9902435
申请日：1999-02-26
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , YAKAHARA YASUSHI , YAMAGUCHI MASAMI
IPC分类号： B21D22/26 , B21K1/76 , F16D3/20 , F16D3/224 , B21K7/00
摘要： The transmission joint, having outer and inner components engaging via balls in a cage, engaging with tracks (51) in their facing surfaces, has the tracks and an inlet bevel in the outer component at least formed during a plastic phase of the material. The outer component is shaped with the aid of a cold drawing matrix (30) and a number of dies (20) which press the material (50) of the component surface (52) outwards to form the tracks.

7. 发明专利

GB2281527B Cold forming method 未知
公开(公告)号：GB2281527B
公开(公告)日：1997-12-10
申请号：GB9406264
申请日：1994-03-29
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SHIMIZU OSAMU , SERA AKIRA
IPC分类号： B21J5/12 , B21K1/30 , G01D5/20
摘要： A cold forming method for plastic deformation process of toothed ring-shaped products (W0) have a tooth profile portion (T) in at least one of the outer peripheral surface and inner peripheral surface thereof. When processing a ring-shaped product (W0) having a tooth profile portion (T) in the outer peripheral surface, a die (1) is utilized. The die (1) has a tooth forming part (4) having a shape corresponding to the shape of the tooth profile portion (T) of the ring-shaped product (W0) in its inner peripheral surface, and, if necessary, a tip shaping part (5) positioned in the groove of the tooth forming part (4). A ring-shaped material (W) is pressed and passed into the die (1) by a punch (2) in a round shaft shape in the axial direction, and processed. When processing a ring-shaped product (W1) having a tooth profile portion (T) in an inner peripheral surface, the tooth forming part (4) and tip shaping part (5) are provided on the outer circumference of a lower punch ( 11), and the ring material (W) is pressed and passed into the lover punch (11) by an upper punch (12), and processed.

8. 发明专利

DE19639677A1 Manufacture of outer element of universal joint with cross slots 未知
公开(公告)号：DE19639677A1
公开(公告)日：1997-04-03
申请号：DE19639677
申请日：1996-09-26
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , TAKAHARA YASUJI , SAGISAKA YOSHIHIRO
IPC分类号： F16D3/44 , B21K1/14 , B21K1/76 , B21K1/00
摘要： The procedure entails fastening a stamping set (5) in the internal circumference of the cylindrical region (1b). The stamping set is extensible and contractible, and has a number of protrusions (3) which are formed complementary to the cross slots to be formed in the internal circumference of the cylindrical section. Next, the cylindrical region is pressed into the bore (8) of a drawing die with an opening area (9) at the front so that a drawing process can be carried out with regard to the outer element.

9. 发明专利

GB2281527A Cold forming method and apparatus 未知
公开(公告)号：GB2281527A
公开(公告)日：1995-03-08
申请号：GB9406264
申请日：1994-03-29
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SHIMIZU OSAMU , SERA AKIRA
IPC分类号： B21J5/12 , B21K1/30 , G01D5/20
摘要： A cold forming method for plastic deformation process of toothed ring-shaped products having a tooth profile portion T in at least one of the outer or inner peripheral surfaces thereof utilises a die 1 with a tooth forming part 4 and, if necessary, a tip or crest shaping part (5, Fig. 7A, not shown) positioned in the grooves of the tooth forming part 4. A ring-shaped blank W is pressed into the die 1 by a punch 2. When processing a ring-shaped product having a tooth profile portion T in an inner peripheral surface, the tooth forming part 4 and tip shaping part are provided on the outer circumference of a lower punch and the blank is pressed into the lower punch by an upper punch.

10. 发明专利

DE4411410A1 未知
公开(公告)号：DE4411410A1
公开(公告)日：1995-03-02
申请号：DE4411410
申请日：1994-03-31
申请人： NTN TOYO BEARING CO LTD
发明人： IIHARA MICHIO , SHIMIZU OSAMU , SERA AKIRA
IPC分类号： B21J5/12 , B21K1/30 , G01D5/20
摘要： A cold forming method for plastic deformation process of toothed ring-shaped products (W0) have a tooth profile portion (T) in at least one of the outer peripheral surface and inner peripheral surface thereof. When processing a ring-shaped product (W0) having a tooth profile portion (T) in the outer peripheral surface, a die (1) is utilized. The die (1) has a tooth forming part (4) having a shape corresponding to the shape of the tooth profile portion (T) of the ring-shaped product (W0) in its inner peripheral surface, and, if necessary, a tip shaping part (5) positioned in the groove of the tooth forming part (4). A ring-shaped material (W) is pressed and passed into the die (1) by a punch (2) in a round shaft shape in the axial direction, and processed. When processing a ring-shaped product (W1) having a tooth profile portion (T) in an inner peripheral surface, the tooth forming part (4) and tip shaping part (5) are provided on the outer circumference of a lower punch ( 11), and the ring material (W) is pressed and passed into the lover punch (11) by an upper punch (12), and processed.

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