PRECISE DRIVING GEAR OF WAFER BY MAKING USE SOLID-TYPE ACTUATOR

    公开(公告)号:JPH0620908A

    公开(公告)日:1994-01-28

    申请号:JP34484891

    申请日:1991-12-26

    Abstract: PURPOSE: To eliminate measurement errors generated by an increase in height with changing displacement in a vertical direction by performing rotation in the vertical direction with the expansion displacement of an expansion part, enlarging the displacement and providing upper/lower direction and tilt driving device provided with a driving part for performing driving, linked with the rotation operation of a displacement-enlarging piece. CONSTITUTION: A roller 22 for upper/lower direction and tilt-driving transmits the enlarged displacement of an actuator to a vacuum chuck 6 in the vertical direction. Thus, it is turned to a driving point for the upper/lower direction and tilt driving device (A). Also, it is utilized as a guiding element for the rotation direction 27 of the roller for the upper/lower direction and tilt driving, and a roller supporting base 24 causes rotation movement along the structure of a circular V-groove 28. That is, the roller 22 for the upper/lower direction and tilt is rotated along the structure of the circular V-groove 28, and the rotation in a horizontal direction is enabled, without generating the displacement of the upper/lower direction and tilt.

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