Numerical control apparatus
AssigneeFanuc Corporation
InventorsTakahiko Endo, Katsunori Nagano
Life of this patent
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Abstract
A numerical control apparatus having tool cutting edge detecting unit for detecting a cutting edge position of a tool mounted on a tool rest, comprises detection signal determining unit for determining, as effective, only a detection signal that is first inputted from among a plurality of detection signals which are continuously inputted from the tool cutting edge detecting unit. A signal which is detected until a preset time is elapsed after a first signal is received when the tool comes into contact with the touch sensor, and/or until the tool moves a predetermined distance, is determined as erroneous detection by the detection signal determining unit, and the signal is disenabled.
Claims14
A numerical control apparatus, comprising:
- tool cutting edge detecting means for detecting a cutting edge position of a tool mounted on a tool rest;
- and
- detection signal determining means for determining, as effective, only a detection signal that is first inputted among a plurality of detection signals which are continuously inputted from the tool cutting edge detecting means.
A numerical control apparatus capable of detecting a tool cutting edge of a tool mounted on a tool rest by contact of the tool cutting edge with a cutting edge abutting surface of a touch sensor, and capable of setting a tool compensation amount from a cutting edge position when the tool cutting edge is detected, the numerical control apparatus comprising:
- tool coordinate value reading means for reading a coordinate value of the tool when a first detection signal is inputted from the touch sensor;
- detection signal determining means which inputs the detection signal from the touch sensor, and which enables a first detection signal and disenables second and subsequent detection signals;
- and
- setting means for setting a determination condition in the detection signal determining means;
- wherein
- the tool coordinate value reading means inputs only the first detection signal based on a determination result of the detection signal determining means.
Dependencies are inferred from the claim text.