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Numerical control apparatus and method of controlling acceleration/deceleration of spindle motor of numerical control apparatus

  • US 6,008,609 A
  • Filed: 12/03/1996
  • Issued: 12/28/1999
  • Est. Priority Date: 09/02/1996
  • Status: Expired due to Term
First Claim
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1. A numerical control apparatus having a spindle control section for controlling a spindle motor and a servo axis control section for controlling a servo axis motor, said numerical control apparatus comprising:

  • a spindle acceleration/deceleration pattern data storing section for storing acceleration/deceleration pattern data for controlling the spindle motor in a position loop control state with acceleration/deceleration pattern data similar to acceleration/deceleration pattern data of the spindle motor in a velocity loop control state;

    a spindle acceleration/deceleration control section for computing instructions for controlling the spindle motor in the position loop control state with the acceleration/deceleration pattern data similar to the acceleration/deceleration pattern data for the spindle motor in the velocity loop control state according to the acceleration/deceleration pattern data stored in said spindle acceleration/deceleration pattern data storing section; and

    a distributor for distributing instructions outputted from said spindle acceleration/deceleration control section so that synchronism between said spindle control section and said servo axis control section will be maintained.

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