Machine tool collision detecting apparatus equipped with collision stress releasing device
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United States of America Patent
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Oct 30, 2018
Grant Date -
Nov 9, 2017
app pub date -
May 8, 2017
filing date -
May 9, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A collision stress releasing device reversely rotates a feed motor by a return amount set in a return amount setter based on a contact position of a movement unit or a collision detection position regarded as a contact position. Generally, a large error does not occur even when the collision detection position is regarded as the contact position, but when the movement unit or the colliding member has low rigidity, a control of setting a return amount in response to the speed of the movement unit or a control of estimating an actual contact position from a rise curve of a load after a collision is more desirable.
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