Okuma Corporation

Daichi Kawauchi

A method for calibrating a positional relation between a main spindle and a contact tool sensor attached to a table in a machine tool. The method includes: mounting a reference tool on the main spindle and obtaining measurement position coordinates as respective tool sensor measurement values, the measurement position coordinates being of a distal end of the reference tool in at least two different measurement regions on an upper surface of the contact tool sensor; outputting predetermined difference values based on the respective tool sensor measurement values; determining an abnormality when the difference values are compared with preliminarily set acceptable values and at least one of the difference values are out of the acceptable values; and calibrating a positional relation between the main spindle and the contact tool sensor based on the respective tool sensor measurement values when the abnormality is not determined at the determining of abnormality.

Calibration method and non-transitory computer-readable storage medium storing calibration program for contact tool sensor in machine tool, and machine tool

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Niwa-Gun, Japan

Daichi Kawauchi