Numerical controller having function of re-machining thread cutting cycle
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United States of America Patent
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Aug 16, 2016
Grant Date -
Jul 17, 2014
app pub date -
Jan 15, 2014
filing date -
Jan 17, 2013
priority date (Note) -
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Abstract
A numerical controller controlling a machine tool calculates a number of incisions to a thread on the basis of an incision start position in a feed axis direction and an incision start position in a direction of an incision axis of a thread which are measured in a state in which a workpiece (a thread in the process of machining) is attached to a chuck of the machine tool, calculates an amount of phase deviation of a screw thread caused by reattachment of the workpiece on the basis of the calculated number of incisions, and re-machines the thread by positioning the workpiece and the tool while taking into consideration of the amount of phase deviation.
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