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Spindle control command method

  • US 5,181,178 A
  • Filed: 10/01/1990
  • Issued: 01/19/1993
  • Est. Priority Date: 02/22/1989
  • Status: Expired due to Fees
First Claim
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1. A spindle control command method for controlling a plurality of spindles using a single numerical control device (CNC) comprising the steps of:

  • (a) commanding synchronous control for a plurality of spindles by using a G code and designate-codes which designate a plurality of spindles controlled synchronously;

    (b) commanding a start of spindle rotation by using an M-code;

    (c) machining a first workpiece having a first length;

    (d) cancelling the synchronous control for the plurality of spindles;

    (e) commanding spindle speeds for the plurality of spindles, respectively; and

    (f) machining a plurality of second workpieces based on respective spindle speeds, said second workpieces having lengths which are shorter than the first length.

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