Device and method of controlling machine tool, to control synchronized operation of spindle axis and feed axis
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United States of America Patent
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Sep 4, 2018
Grant Date -
Feb 2, 2017
app pub date -
Jul 22, 2016
filing date -
Jul 29, 2015
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Abstract
A controller for controlling a synchronized operation of spindle and feed axes. A spindle-axis control section includes an initial-motion control section for making a spindle axis perform an accelerated rotation at maximum capacity from a process start position; a maximum-acceleration detecting section for detecting a maximum acceleration of the spindle axis; a residual rotation-amount detecting section for detecting a residual rotation amount of the spindle axis; a current-speed detecting section for detecting a current speed of the spindle axis; a positioning-motion control section for making the spindle axis perform a decelerated rotation so as to reach the target thread depth after the accelerated rotation; and an overshoot detecting section for detecting an overshoot of the spindle axis during the decelerated rotation.
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