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1. 发明公开

EP2650563A4 BALL SCREW DEVICE 有权
标题翻译：球滚动STEM DEVICE
公开(公告)号：EP2650563A4
公开(公告)日：2016-09-07
申请号：EP11702382
申请日：2011-02-03
申请人： NSK LTD
发明人： MIYAZAKI KAZUNARI
IPC分类号： F16H25/22
CPC分类号： F16H25/2214 , F16H25/2223 , Y10T74/19767 , Y10T74/19772
摘要： There is provided a ball screw device even with a small lead angle and a small number of circulation rolls, including a rotational part, which keeps unequal division of tongue portions and legs connected to the tongue portions to a minimum and ensures the strength of the tongue portions. A recirculating part 40 of the ball screw device thus includes a pair of legs 41, each having a tongue portion 44 for scooping up balls in a direction approximately tangential to a spiral raceway, and a main body 42 connecting the pair of legs 41. First divided faces A and C for dividing the pair of legs 41 along a ball recirculating path R, and a second divided face B for dividing the main body 42 along the ball recirculating path R are also included. The second divided face B is formed by an upper divided face B 1 and a lower divided face B 2 of the ball recirculating path R so that the upper divided face B 1 and the lower divided face B 2 intersect with each other when viewed from a flat surface 20a of the nut 20.

2. 发明公开

EP3059469A4 BALL SCREW AND SEAL USED THEREIN 有权
标题翻译： KUGELGEWINDETRIEB UND DARIN VERWENDETE DICHTUNG
公开(公告)号：EP3059469A4
公开(公告)日：2017-06-28
申请号：EP14865130
申请日：2014-11-27
申请人： NSK LTD
发明人： MIYAZAKI KAZUNARI , MARUYAMA DAISUKE
IPC分类号： F16H25/24 , F16H25/22 , F16J15/00
CPC分类号： F16H25/2418 , F16H25/2204 , F16H57/0406 , F16H57/0464 , F16H57/0497
摘要： There are provided a ball screw that more efficiently prevents accumulation and scattering of extra grease in a nut and a seal used in the ball screw. In order to do that, a grease reservoir portion (33) is provided on an inner peripheral surface of a seal (30) provided at an end of a nut (20) on rear side of a moving direction of a ball screw so as to form a space with respect to a screw shaft (10). The grease reservoir portion (33) is open to an outer peripheral surface of the seal (30) and communicates with slits (34) formed on the outer peripheral surface of the seal (30).
摘要翻译：提供了一种滚珠丝杠，其更有效地防止螺母中的多余油脂的积聚和散布以及滚珠丝杠中使用的密封件。为此，在设置于螺母（20）的滚珠丝杠的移动方向后方侧的端部的密封件（30）的内周面上设置有润滑脂积存部（33），相对于螺杆轴（10）形成空间。润滑脂贮存部33向密封件30的外周面开口，并与形成于密封件30的外周面的狭缝34连通。

3. 发明公开

EP3059471A4 BALL SCREW AND SEAL USED THEREIN 有权
标题翻译：滚珠丝杆传动及二手SEAL
公开(公告)号：EP3059471A4
公开(公告)日：2016-12-07
申请号：EP14865821
申请日：2014-11-27
申请人： NSK LTD
发明人： MIYAZAKI KAZUNARI , MARUYAMA DAISUKE
IPC分类号： F16H25/24 , F16H25/22 , F16H57/04
CPC分类号： F16H57/0464 , F16H25/2204 , F16H25/2418 , F16H57/0497
摘要： There are provided a ball screw that more efficiently prevents accumulation and scattering of extra grease in a nut and a seal used in the ball screw. In order to do that, in a ball screw (1), a grease reservoir portion (33) is provided on an inner peripheral surface of a seal (30) provided at at least one end of ends of a nut (20) in a moving direction of the nut (20) so as to form a space with respect to a screw shaft (10). The grease reservoir portion is open to an outer peripheral surface of the seal (30) and communicates with slits (34) formed on the outer peripheral surface of the seal (30).

4. 发明公开

EP2487388A4 BALL SCREW DEVICE 有权
公开(公告)号：EP2487388A4
公开(公告)日：2015-11-04
申请号：EP11745682
申请日：2011-08-03
申请人： NSK LTD
发明人： MIYAZAKI KAZUNARI
IPC分类号： F16H25/22
CPC分类号： F16H25/2214 , Y10T74/19767
摘要： A ball screw device for reducing damage to a circulating part even during a high speed operation is provided. To this end, the circulating part (40) includes a pair of legs (41,41) having a tang (44) to scoop up a ball (30) in a direction substantially match with a tangential direction of a spiral path, and a body (42) to connect the pair of legs (41,41), wherein a center path diameter Rb of the ball (30), an internal diameter Rn of the nut (20), and an internal diameter Rt opposite to the tang (44) satisfy a relationship of Rb ‰¦ Rt ‰¦ Rn.

5. 发明公开

EP3279510A4 SCREW SHAFT, MANUFACTURING METHOD THEREOF, AND BALL SCREW DEVICE 有权
公开(公告)号：EP3279510A4
公开(公告)日：2018-05-09
申请号：EP16773183
申请日：2016-03-31
申请人： NSK LTD
发明人： MIYAZAKI KAZUNARI , MUTO KEISUKE , NAGAI YUTAKA , ARAI SATORU , MARUYAMA DAISUKE , NOBUTOMO MASAHIRO
IPC分类号： F16H25/24 , F16H25/22
CPC分类号： F16H25/2409 , F16H25/22 , F16H25/2204 , F16H25/24 , F16H25/2427 , F16H2025/2481
摘要： A helical member or a divided helical member made of a metal spring that constitutes part of a screw groove is fixed in the outer peripheral surface of a cylindrical body, in which at least part of a screw shaft of a ball screw device is produced by filament winding or sheet winding.

6. 发明公开

EP3059470A4 BALL SCREW 有权
标题翻译： KUGELSCHRAUBE
公开(公告)号：EP3059470A4
公开(公告)日：2017-06-21
申请号：EP14865673
申请日：2014-11-27
申请人： NSK LTD
发明人： MIYAZAKI KAZUNARI , MARUYAMA DAISUKE
IPC分类号： F16H25/24 , F16H25/22 , F16H57/04
CPC分类号： F16H57/0497 , F16H25/2204 , F16H25/2214 , F16H25/2418 , F16H57/0464
摘要： There are provided a ball screw that more efficiently prevents accumulation and scattering of extra grease in a nut. In order to do that, a grease reservoir portion (33) is provided on an inner peripheral surface of a seal (30) provided at the end of the nut 20 on the rear side in the moving direction of a ball screw. The grease reservoir (33) portion is open to an outer peripheral surface of the seal (30) and communicates with slits (34) formed on the outer peripheral surface of the seal (30). A cover (40) that covers the seal (30) is provided at the nut (20) or seal (30).
摘要翻译：提供了更有效地防止螺母中多余油脂的积聚和散布的滚珠丝杠。为此，在设于螺母20的滚珠丝杠的移动方向后侧的端部的密封件（30）的内周面设置有润滑脂积存部（33）。润滑脂积存部（33）在密封件（30）的外周面开口，与形成在密封件（30）的外周面上的狭缝（34）连通。覆盖密封件（30）的盖（40）设置在螺母（20）或密封件（30）处。

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