Distance measurement holder and machine tool having interfering object sensing function
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United States of America Patent
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Sep 5, 2017
Issued Date -
N/A
app pub date -
Jun 10, 2014
filing date -
Jun 11, 2013
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Abstract
A distance measurement holder is attached to the main shaft of a machine tool. A laser beam emitted from a holder main body is reflected by a reflection mirror section fixed to a tapered sleeve, and reflected by a measurement target, and then received by a light receiving section provided in the holder main body. The tapered sleeve is fit into the main shaft and supported to be rotatable relative to the holder main body. The distance measurement holder is shaped such that the angle of a side surface of the reflection mirror section changes in accordance with the rotation angle of the main shaft. The distance measurement holder thus configured determines the distance between the main shaft and the measurement target to determine whether or not a jig, a workpiece, the main shaft, and a cutting tool interfere with each other in the range of a rapid positioning motion specified in an NC program.
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