CONTROLLER OF LASER MACHINING DEVICE AND CONTROLLING METHOD FOR REDUCING APPROACH TIME

摘要

A controller of a laser machining device according to the present invention includes a positioning completion determining part for determining whether or not positioning of the nozzle is completed, a completion expectation determining part for determining whether or not the completion of the positioning of the nozzle can be expected, and a subsequent process determining part for determining whether or not a subsequent process can be carried out in the state where the completion of the positioning of the nozzle is expected. If the subsequent process can be carried out when the completion of the positioning of the nozzle is only expected, the subsequent process is carried out immediately when it is determined that the completion of the positioning of the nozzle can be expected. If the subsequent process cannot be carried out, the subsequent process is carried out only after the positioning of the nozzle is completed.

主权项

1. A controller for controlling a laser machining device with a nozzle for radiating laser, comprising:
a target gap amount specifying part for specifying a target gap amount and a tolerance of the target gap amount, the target gap amount corresponding to a distance between the nozzle and a workpiece during laser machining; a gap amount detecting part for detecting an actual gap amount between the nozzle and the workpiece; a nozzle position controlling part for controlling a position of the nozzle based on the target gap amount and the actual gap amount; a positioning completion determining part for determining whether or not positioning of the nozzle is completed in accordance with the target gap amount and the tolerance of the target gap amount; a completion expectation determining part for determining whether or not completion of the positioning of the nozzle can be expected; and a subsequent process determining part for determining whether or not it is possible to carry out a subsequent process which should be carried out after the positioning of the nozzle in the state where completion of the positioning of the nozzle can be expected, wherein the controller is configured such that in the case where the subsequent process determining part determines that it is possible to carry out the subsequent process, the subsequent process is carried out at a time when the completion expectation determining part determines that completion of the positioning of the nozzle can be expected, and that in the case where the subsequent process determining part determines that it is not possible to carry out the subsequent process, the subsequent process is carried out at a time when the positioning completion determining part determines that the positioning of the nozzle is completed.