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1. 发明申请

US20150369291A1 MULTIPOINT CONTACT BALL BEARING 有权
标题翻译：多点接触球轴承
公开(公告)号：US20150369291A1
公开(公告)日：2015-12-24
申请号：US14764562
申请日：2014-01-29
申请人： NSK LTD.
发明人： Atsushi Kario , Yuuki Tsuchida , Susumu Tanaka
IPC分类号： F16C33/58 , F16C19/16
CPC分类号： F16C33/585 , F16C19/166 , F16C33/32 , F16C33/64 , F16C2240/40 , F16C2240/50 , F16C2240/76
摘要： The present invention achieves construction of a multipoint contact ball bearing that is able to prevent the rolling surfaces of the balls 4 from becoming damaged and can keep the durability of the bearing from decreasing while maintaining the radial load capacity even when large radial loads act and the rolling surfaces of the balls 4 coming in contact with the inner raceway bottom section 8a. The inner raceway 5a is complex curved surface that comprises a pair of inner raceway side surface sections having a generating line shape with a radius of curvature that is larger than 50% the diameter of the balls 4, and an inner raceway bottom section 8a that connects the edges of the inside end in the width direction of the pair of inner raceway side surface sections 7a; with the inner raceway bottom section 8a big a concave curved surface having a generating line shape with a radius of curvature R8 that is less than 50% the diameter of the balls 4. The edges of both sides in the width direction of the inner raceway bottom section 8a and the edges of the inside ends in the width direction of the pair of inner raceway side surfaces sections 7a are smoothly continuous, and finishing is also performed on the inner raceway bottom section 8a in addition to the pair of inner raceway side surfaces sections 7a.
摘要翻译：本发明实现了多点接触球轴承的构造，其能够防止滚珠4的滚动面被损坏，并且即使当径向载荷较大时也能保持轴承的耐久性，同时保持径向载荷能力，并且滚珠4的滚动面与内滚道底部8a接触。内滚道5a是复数曲面，其包括一对具有曲率半径大于球4直径的50％的发生线形状的内滚道侧表面部分，以及连接到滚珠4的内滚道底部部分8a 内侧端部在一对内侧滚道侧面部7a的宽度方向上的边缘; 内滚道底部8a大的是具有曲率半径R8小于球4的直径的50％的发生线形状的凹曲面。内滚道底部宽度方向上的两侧边缘一部分内侧滚道侧面部7a的宽度方向的内侧端部的边缘平滑地连续，除了一对内侧滚道侧面部分之外，还对内侧滚道底部部分8a进行精加工 7a。

2. 发明授权

US09593718B2 Multipoint contact ball bearing 有权
标题翻译：多点接触球轴承
公开(公告)号：US09593718B2
公开(公告)日：2017-03-14
申请号：US14764562
申请日：2014-01-29
申请人： NSK Ltd.
发明人： Atsushi Kario , Yuuki Tsuchida , Susumu Tanaka
IPC分类号： F16C33/58 , F16C33/64 , F16C19/16 , F16C33/32
CPC分类号： F16C33/585 , F16C19/166 , F16C33/32 , F16C33/64 , F16C2240/40 , F16C2240/50 , F16C2240/76
摘要： A multipoint contact ball bearing in constructed to prevent damage to rolling surfaces of the balls and to ensure durability while maintaining radial load capacity. An inner raceway has a complex curved surface including a pair of side surface sections having a generating line shape with a radius of curvature larger than 50% of the ball diameter, and an inner raceway bottom section connecting inside end edges in the width direction of the side surface sections. The inner raceway bottom section is a concave curved surface having a generating line shape with a radius of curvature less than 50% of the ball diameter. The edges of both sides in the width direction of the inner raceway bottom section and the inside end edges of the inner raceway side surface sections are smoothly continuous, and finishing is performed on the inner raceway bottom section and the inner raceway side surface sections.
摘要翻译：多点接触球轴承，用于防止球的滚动表面受到损伤，同时保持径向载荷能力，同时保证耐用性。内滚道具有复曲面，该曲面包括具有大于球直径的50％的曲率半径的发生线形状的一对侧面部，以及连接内侧滚道的宽度方向内端部的内滚道底部侧面部分。内滚道底部是具有曲率半径小于球直径的50％的生成线形状的凹曲面。内侧滚道底面的宽度方向的两侧边缘和内侧滚道侧面部的内侧端缘平滑连续，在内侧滚道底面和内侧滚道侧面部进行精加工。

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