Numerical controller
AssigneeFanuc Corporation
InventorsHaruhiko Kozai, Takahiko Endo, Eiji Genma
Life of this patent
Estimating the term…
Abstract
For outputting an amount of backlash compensation according to the direction of reversal in the reversal motion of the moving axis, three output modes are prepared: (a) a mode in which a preset backlash compensation is outputted all at once, (b) a mode in which backlash compensation is outputted according to distance traveled, and (c) a mode in which backlash compensation is outputted according to time elapsed. It is determined whether the motion of the moving axis has been changed from positive to negative directions or from negative to positive directions, and with this determination result, any one of the above three output modes (a) to (c) is selected.
Claims5
A numerical controller having a backlash compensation function that outputs backlash compensation to a position control section to compensate for backlash that occurs when the direction of motion for a moving axis is reversed, the numerical controller comprising:
- setting means for setting output modes for outputting backlash compensation to the position control section, which correspond to directions of reversal in the reversal motion of the moving axis;
- determining means for determining a direction of reversal in the reversal motion of the moving axis;
- and
- backlash compensation output means for outputting the backlash compensation to the position control section by using the output mode corresponding to the direction of reversal determined by said determining means.
Dependencies are inferred from the claim text.