发明授权
US5519553A Coarse and fine head positioning apparatus which uses a slidable shaft
for fine positioning
失效
粗头和精头定位装置，其使用可滑动的轴进行精细定位
- 专利标题： Coarse and fine head positioning apparatus which uses a slidable shaft for fine positioning
- 专利标题（中）： 粗头和精头定位装置，其使用可滑动的轴进行精细定位
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申请号： US157898申请日： 1993-11-24
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公开(公告)号： US5519553A公开(公告)日： 1996-05-21
- 发明人: Akira Hashimoto , Kazuo Hasegawa , Masao Sato
- 申请人： Akira Hashimoto , Kazuo Hasegawa , Masao Sato
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-018521 19930205
- 主分类号： G11B21/02
- IPC分类号： G11B21/02 ; G11B5/016 ; G11B5/55 ; G11B7/085 ; G11B21/04 ; G11B21/08 ; G11B21/10
摘要：
This invention provides a small-sized and easy-assembling head positioning apparatus having a coarse moving mechanism and fine moving mechanism, by which the desired fine moving accuracy is easy to attain. A head positioning apparatus has a first stepping motor, a lead screw, and a cylindrical rack for coarse moving. The cylindrical rack is formed by rotating a rack around the axis of the lead screw and is provided with the lead screw. The head positioning apparatus has a second stepping motor and gears for reducing the speed of the rotation of the second stepping motor for fine moving means, and fine moving is carried out by moving the cylindrical rack by the gear. The lead screw is provided so that the first stepping motor could be moved in a X1, X2 direction in the fixed moving range.
公开/授权文献
- US4805904A Method and apparatus for adjusting a basketball goal 公开/授权日：1989-02-21
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