发明授权
- 专利标题: Ball screw apparatus
- 专利标题(中): 滚珠丝杠装置
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申请号: US09932078申请日: 2001-08-17
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公开(公告)号: US06675669B2公开(公告)日: 2004-01-13
- 发明人: Noriaki Sekiya , Daisuke Maruyama , Toshiyuki Iehisa , Kazuo Miyaguchi
- 申请人: Noriaki Sekiya , Daisuke Maruyama , Toshiyuki Iehisa , Kazuo Miyaguchi
- 优先权: JP2000-252602 20000823
- 主分类号: F16H2522
- IPC分类号: F16H2522
摘要:
A ball screw apparatus is provided with a screw shaft having a spiral ball screw groove, a nut member having a screw groove, and a plurality of balls. A smoothly continuous worked portion is formed at a portion of the screw groove by grinding a corner portion between the screw groove and a connecting way. The worked portion is formed such that the distance between the screw grooves is gradually reduced regarding an advancing direction of the ball entering from the connecting way in between the screw grooves. This worked portion extends from an end of the connecting way in a circumferential direction of the nut member and within a range of 90° from the corner portion along the circumferential direction of the nut member.
公开/授权文献
- US20020023513A1 Ball screw apparatus 公开/授权日:2002-02-28