发明申请
- 专利标题： Ball screw device having bearing members of different load
- 专利标题（中）： 滚珠丝杠装置具有负载不同的轴承部件
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申请号： US12214194申请日： 2008-06-17
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公开(公告)号： US20090308192A1公开(公告)日： 2009-12-17
- 发明人: Ming-Yao Lin , Wen Chia Wu
- 申请人： Ming-Yao Lin , Wen Chia Wu
- 专利权人： Hiwin Technologies Corp.
- 当前专利权人： Hiwin Technologies Corp.
- 主分类号： F16H25/22
- IPC分类号： F16H25/22
摘要：
A ball screw device includes a screw shaft engaged into a ball nut and each having helical grooves for forming two multiple turn, helical raceways, a group of rollers is received in one of the helical raceways for bearing a greater load in a forward-motion, and a group of ball bearing members is received in another helical raceway for bearing a smaller load in a backward-motion. The helical groove of the screw shaft may include a V-shaped cross section, or a flat surface at one side for engaging with the rollers, and a curved surface at another side for engaging with the ball bearing members. The ball nut may include two nut members secured together.
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