Numerical controller for retraction control
AssigneeFanuc Corporation
InventorHiroki MURAKAMI
Life of this patent
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Abstract
A numerical controller which controls a five-axis machining machine having two rotary axes generates speed data for deceleration stop along movement paths when a stop signal that requires interruption of machining and retraction is sensed, and based on the speed data, generates stop retraction path command data combining a path for the deceleration stop along the movement paths and a retraction path receding from the movement paths.
Claims2
A numerical controller which controls a machining machine comprising at least two linear axes and at least one rotary axis based on a machining program, thereby machining a workpiece placed on a table, the numerical controller comprising:
- a command reading unit configured to read and analyze the machining program and generate command data indicative of movement paths for the linear and rotary axes;
- a stop signal sensing unit configured to sense a stop signal which requests interruption of the machining and retraction;
- a deceleration stop unit configured to generate speed data for deceleration stop along the movement paths when the stop signal is sensed by the stop signal sensing unit;
- a stop-retraction path generation unit configured to generate stop retraction path command data indicative of a stop retraction path, which combines a path for the deceleration stop along the movement paths and a retraction path receding from the movement paths, based on the command data and the speed data when the stop signal is sensed by the stop signal sensing unit;
- and
- an interpolation unit configured to obtain each axis position for each interpolation period based on the stop retraction path command data when the stop signal is sensed by the stop signal sensing unit.
Dependencies are inferred from the claim text.