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Numerical control device for tool machine

  • US 8,478,439 B2
  • Filed: 07/03/2009
  • Issued: 07/02/2013
  • Est. Priority Date: 08/26/2008
  • Status: Expired due to Fees
First Claim
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1. A numerical control device for a tool machine, provided at a tool machine which has a work moving device that moves a work in at least one movement direction and a tool moving device that moves a tool for machining the work in at least one movement direction, in which the movement direction of the work or the movement direction of the tool includes a first movement direction and/or a second movement direction that are different from each other, and in which an acceleration-deceleration time constant of the movement in the first movement direction and an acceleration-deceleration time constant of the movement in the second movement direction are set to mutually different values, the numerical control device serving to control a drive of at least one of the work moving device and the tool moving device, and comprising:

  • a primary distribution pulse calculation unit that calculates primary distribution pulses obtained by distributing individually a movement amount in the first movement direction included in a movement command of the work or a movement command of the tool and a movement amount in the second movement direction included in a movement command of the work or a movement command of the tool for each of predetermined calculation cycles;

    a secondary distribution pulse calculation unit that calculates, for each of the first movement direction and the second movement direction, secondary distribution pulses obtained by distributing the primary distribution pulses of each of the predetermined calculation cycles, which have been calculated by the primary distribution pulse calculation unit, before and after corresponding calculation cycles within ranges of distribution sections across the corresponding calculation cycles and having the acceleration-deceleration time constant of the corresponding first or second movement direction as a section width, and then accumulating the primary distribution pulses for each of the respective predetermined calculation cycles; and

    a drive control unit that drives at least one of the tool moving device and the work moving device based on the secondary distribution pulses calculated by the secondary distribution pulse calculation unit.

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