Method and apparatus for controlling motor-driven chucking device
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United States of America Patent
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Oct 15, 2002
Grant Date -
N/A
app pub date -
Oct 21, 1999
filing date -
Oct 23, 1998
priority date (Note) -
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Abstract
A method and apparatus for controlling a motor-driven chucking device which are capable of delicately controlling the workpiece gripping force, the travel speed of gripping jaws, and so forth. The method controls a motor-driven chucking device in which gripping jaws of a chuck provided on a main spindle rotatably supported by a headstock of a machine tool are opened or closed by a torque controllable driving motor to grip a workpiece. The method includes the steps of inputting a set value for gripping force with which the gripping jaws grip the workpiece, and opening or closing the gripping jaws by controlling rotation of the driving motor according to the set value for the gripping force.
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