US Patent No. 9,429,933

NUMERICAL CONTROLLER FOR MACHINE HAVING COMPONENT INSPECTION TIMING NOTIFICATION FUNCTION


Patent No. 9,429,933
Issue Date August 30, 2016
Title Numerical Controller For Machine Having Component Inspection Timing Notification Function
Inventorship Hideaki Misoka, Minamitsuru-gun (JP)
Assignee FANUC Corporation, Minamitsuru-gun, Yamanashi (JP)

Claim of US Patent No. 9,429,933

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.