Numerical control device and computer-readable storage medium
AssigneeFanuc Corporation
InventorSatoru SEKIKAWA
Life of this patent
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Abstract
Provided is a numerical control device that acquires a variation condition for periodically varying a spindle speed, computes the periodically varying spindle speed on the basis of a variation amplitude ratio and a variation frequency ratio included in the variation condition, acquires the temperature of the spindle, and, when the temperature of the spindle exceeds a predetermined temperature threshold value, reduces at least one of or both of the variation amplitude ratio and the variation frequency ratio.
Claims11
A numerical controller, comprising:
- a variation condition acquisition unit that acquires variation conditions for periodically varying a spindle speed;
- a spindle speed computation unit that computes a vibrating spindle speed, which varies periodically, based on a variable amplitude rate and a variable frequency rate that are included in the variation conditions;
- a temperature acquisition unit that acquires temperature of a spindle;
- and
- a variation magnification computation unit that decreases one of or both the variable amplitude rate and the variable frequency rate when the temperature of the spindle exceeds a predefined temperature threshold value.
A computer-readable storage medium that stores commands that allow one or more processors to:
- acquire variation conditions for periodically varying a spindle speed;
- compute the spindle speed, which varies periodically, based on a variable amplitude rate and a variable frequency rate that are included in the variation conditions;
- acquire temperature of a spindle;
- and
- decrease at least one of or both the variable amplitude rate and the variable frequency rate when the temperature of the spindle exceeds a predefined temperature threshold value.
Dependencies are inferred from the claim text.