Patent ID: 11878370
Assignee: AMADA CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of supplying cooling water to a laser processing head, the method comprising:
providing a cooling water supply path connected to the laser processing head,
providing a discharge tank,
connecting, to the cooling water supply path, a water supply path for supplying water and an antirust supply path for supplying antirust,
keeping constant a ratio between a water quantity fed by a water feeder connected to the water supply path and an antirust quantity fed by an antirust feeder connected to the antirust supply path,
mixing the water and antirust in the cooling water supply path,
providing a changeover valve that selectively opens and closes the cooling water supply path,
operating the changeover valve to discharge the cooling water to the discharge tank and detecting a conductivity of the cooling water before supplying the cooling water to the laser processing head,
in a state where the conductivity of the cooling water is within a preset range, operating the changeover valve to supply the cooling water to the laser processing head, and
providing a feed capacity of the antirust to be smaller than a feed capacity of the water.