Method of determining coordinate system in machining center

Details Method of determining coordinate system in machining center Method of determining coordinate system in machining center

1982-11-16

1985-12-24

Smith, Jerry

Boots, shoes, and leggings

364474, 364170, 364192, 318568, 408 13, G05B 1918

Patent

active

045610509

ABSTRACT:
A method of determining coordinate system in a machining center in which tool exchange is made after resetting the tool to the mechanical zero point. A reference position is set with respect to a program zero point at a position on a coordinate having the origin coinciding with the program zero point. The mechanical coordinate values of the reference position with respect to the mechanical zero point are computed and determined by making a reference portion of the tool coincide with the reference position. Then, the mechanical coordinate values of the program zero point are computed and determined from the reference position. In the tool exchange, the mechanical coordinate value of the program zero point in the direction of axis of spindle is corrected in accordance with the difference of length between two tools, by reading the data concerning the tool lengths from a tool file storing the tool lengths in the direction of axis of the spindle. According to this method, it is possible to compute and determine the mechanical coordinate values of the program zero point without delay even when the tool is changed in the machining center.

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