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Numerical control apparatus

  • US 6,404,160 B2
  • Filed: 06/06/2001
  • Issued: 06/11/2002
  • Est. Priority Date: 12/24/1998
  • Status: Expired due to Term
First Claim
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1. A numerical control apparatus for synchronously controlling a plurality of spindle motors or servo motors, driven by a machine tool according to a processing program, the numerical control apparatus comprising:

  • a memory unit which stores the processing program;

    a synchronous control management unit which manages a dominant relation of a plurality of axes to be controlled synchronously; and

    a plurality of axis control units, having information about a reference axis as a reference of synchronous control or having information about a synchronous axis for operating synchronously with the reference axis stored according to the dominant relation of the axes managed by the synchronous control management unit, for controlling the corresponding spindle motors or servo motors on the basis of a calculated command position, wherein one of said axis control units having set the information about the reference axis, and the other axis control units having set the information about the synchronous axis, control the corresponding plurality of spindle motors or servo motors, and the plurality of axes can be controlled synchronously in relation to the reference axis.

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