| 摘要 |
PURPOSE:To permit the correct work by correcting the backlash corresponding to the feed speed. CONSTITUTION:A main control part 2 drive-controls a driving motor 6 for driving each feeding shaft through a feed control part 3 on the basis of a work ing program and applies each prescribed feed onto a work, table, tool, etc. When the direction of feed changes, it is judged that the feed after the change is rapid traverse or cutting feed. The backlash correction quantity BAV corre sponding to the judged feed is read out of a backlash correcting quantity mem ory 9, and the backlash generated on the feeding shaft during the working for a workpiece is corrected on the basis of the read-out value. Therefore, the backlash can be finely corrected in correspondence with the feeding speed, and correct working is permitted. |
