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Numerical controller for machine having component inspection timing notification function

  • US 9,429,933 B2
  • Filed: 03/05/2014
  • Issued: 08/30/2016
  • Est. Priority Date: 03/07/2013
  • Status: Active Grant
First Claim
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1. A numerical controller for a machine, having function of notifying a timing for inspection of at least one of a plurality of components used in the machine, the numerical controller comprising:

  • inspection cycle storage means for storing a plurality of inspection cycles for the component;

    inspection cycle selecting threshold storage means for storing a first threshold for the selection of an inspection cycle for the component based on an amount of change in state quantity of the component;

    state quantity storage means for storing inspection dates for the component and state quantities measured on the inspection dates in association with one another;

    amount-of-change calculation means for calculating the amount of change in state quantity based on at least two inspection dates stored in the state quantity storage means and state quantities measured on the at least two inspection dates;

    inspection cycle selection means for selecting one of the inspection cycles stored in the inspection cycle storage means by comparing the amount of change in state quantity calculated by the amount-of-change calculation means with the first threshold;

    next inspection date calculation means for calculating the next inspection date based on the last inspection date for the component and the inspection cycle selected by the inspection cycle selection means; and

    inspection date notification means for notifying the next inspection date calculated by the next inspection date calculation means.

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