发明申请
- 专利标题： Ball Screw And A Method For Manufacturing The Same
- 专利标题（中）： 滚珠丝杠及其制造方法
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申请号： US12609191申请日： 2009-10-30
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公开(公告)号： US20100043582A1公开(公告)日： 2010-02-25
- 发明人: Koji Tateishi , Hirakazu Yoshida
- 申请人： Koji Tateishi , Hirakazu Yoshida
- 申请人地址： JP Osaka
- 专利权人： NTN Corporation
- 当前专利权人： NTN Corporation
- 当前专利权人地址： JP Osaka
- 优先权： JP2007-120661 20070501
- 主分类号： F16H25/22
- IPC分类号： F16H25/22 ; B23P13/00
摘要：
A ball screw has a nut formed with a helical ball rolling groove on its inner circumference. A screw shaft is formed with a helical ball rolling groove on its inner circumference. The screw shaft is inserted into the nut. A number of balls are rollably contained within a ball rolling passage formed by oppositely arranged helical ball rolling grooves of the nut and the screw shaft, respectively. The nut is made of case hardened steel. The ball rolling groove is formed by cutting and surface hardening, by vacuum carburizing hardening, without any after-processing.
公开/授权文献
- US09289828B2 Ball screw and a method for manufacturing the same 公开/授权日：2016-03-22
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