发明授权
- 专利标题： Positioning system
- 专利标题（中）： 定位系统
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申请号： US719218申请日： 1985-04-02
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公开(公告)号： US4669359A公开(公告)日： 1987-06-02
- 发明人: Kazuo Shiba
- 申请人： Kazuo Shiba
- 申请人地址： JPX Tokyo
- 专利权人： Citizen Watch Co., Ltd.
- 当前专利权人： Citizen Watch Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX59-67225 19840404
- 主分类号： B23Q5/42
- IPC分类号： B23Q5/42 ; G05B19/39 ; F15B13/16 ; G05B11/18
摘要：
A system for positioning a movable body for a processing machine. A lead screw is rotatably and axially shiftably supported and engaged with the movable body. The lead screw is rotated by a motor to move the movable body. A hydrostatic thrust bearing is provided for preventing axial movement of the lead screw. The lead screw is finely moved in the axial direction by controlling the pressure difference of oil supplied to the thrust bearing to position the movable body.
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