Work position adjusting apparatus and adjusting method
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United States of America Patent
Stats
-
May 8, 2001
Grant Date -
N/A
app pub date -
Mar 11, 1998
filing date -
Jul 23, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for adjusting the position of a work mounted on a machine tool. A base is fixed to a work table of the machine tool, and the position of a mounting member is adjusted with respect to the base. The work is mounted on a mounting surface of the mounting member. The positions in the Z-axis direction of central portions of the four sides of the mounting member are adjusted by first driving and fixing members so that a work surface of the work is along an X-Y plane. The position where the mounting member is rotated around the Z-axis is then adjusted by second driving and fixing members arranged in the central portions of the pair of opposite sides of the mounting member so that a plane of the work is parallel to an X-Z plane. Each of the driving and fixing members includes piezoelectric displacement elements for adjusting an amount of displacement in response to an applied voltage so as to fix the mounting member in a state where the amount of displacement is adjusted.
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