Patent ID: 11958135
Assignee: FANUC CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A machining condition adjustment device configured to adjust a laser beam machining condition fora laser beam machining device to carry out laser beam machining of a workpiece, the machining condition adjustment device comprising:
a processor configured to
produce state variables including laser beam machining condition data indicating the laser beam machining condition in the laser beam machining, workpiece data indicating information related to the workpiece, and plasma generation amount data indicating an amount of plasma generated in the laser beam machining;
produce determination data including plasma generation amount determination data for determination of the amount of the plasma generated in the laser beam machining by the laser beam machining device; and
learn adjustment action for the laser beam machining condition with respect to the amount of the plasma generated in the laser beam machining of the workpiece under a prescribed laser beam machining condition, with use of the state variables and the determination data, wherein

the plasma generation a mount determination data is for determination of the amount of the plasma generated in the laser beam machining of the workpiece under the laser beam machining condition adjusted by the adjustment action for the laser beam machining condition, and
the prescribed laser beam machining condition includes a condition where the workpiece is machined by the laser beam machining and, during the laser beam machining of the workpiece, a machining surface of the workpiece is at or in a vicinity of a flow speed maximizing position for an assist gas ejected from a nozzle of the laser beam machining device to the workpiece and re-converged due to a shock wave generated from a mouth of the nozzle, wherein
the assist gas is (1) ejected from the nozzle at a gas pressure maximizing position, and (2) then expanded and then re-converged at a position between the gas pressure maximizing position and the flow speed maximizing position in a flow direction of the assist gas.