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发明公开
CN111213225A 相对于对象物使第一移动体和第二移动体直线移动的装置及方法 审中-实审

相对于对象物使第一移动体和第二移动体直线移动的装置及方法
摘要：
本发明：经导轨引导而直线移动的第一基体、第二基体(10、20)；沿着移动方向以规定间距设有刻度(34)的线性标度尺(33)；以及装设于第一基体、第二基体(10、20)的第一编码器头、第二编码器头(17、27)；且一面将第一编码器头、第二编码器头(17、27)的间隔保持于规定间隔a而使第一基体、第二基体(10、20)沿着导轨移动，一面逐次利用第一编码器头、第二编码器头(17、27)来检测第一编码器头、第二编码器头(17、27)所处的第一刻度编号B1(n)、第二刻度编号B2(n)，根据规定间隔a与第一刻度编号B1(n)和第二刻度编号B2(n)之间的标度尺上的距离A(n)的比率，控制第一基体、第二基体(10、20)的移动量。
摘要（英）：

The present invention is provided with: first and second bases (10, 20), which are guided by a guide rail to thereby linearly move; a linear scale (33) provided with scales (34) at predetermined pitches in the moving direction; and first and second encoder heads (17, 27) attached to the first and second bases (10, 20). In the present invention, while maintaining, at a predetermined distance a, a distance between the first and second encoder heads (17, 27), and moving the first and second bases (10, 20) along the guide rail, first and second scale numbers B1(n), B2(n), at which the first and second encoder heads (17, 27) are positioned, are sequentially detected from the first and second encoder heads (17, 27), and the amount of movement of the first and second bases (10, 20) is controlled on the basis of the ratio between the predetermined gap a and the distance A(n) on the scale between the first scale numbers B1(n) and the second scale numbers B2(n).

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