Laser beam machining method
AssigneeFanuc Corporation
InventorYoshinori Nakata
Life of this patent
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Abstract
A laser beam machining method of processing a machining path having an acute angle in a CNC laser machining apparatus. A numerical control device (CNC) previously reads a machining program, to thereby detect an acute angle not greater than an allowable angle in the machining path. A machining operation is executed under normal machining conditions before a vertex (33) of the acute angle is reached and is stopped at the vertex (33) of the acute angle, and the region near the vertex (33) is cooled for a predetermined time by a cooling medium, whereby a lowering of the cut surface roughness due to an overheating by a laser beam (7) is prevented. After the cooling, the cutting work is executed under drilling conditions to continue the machining.
Claims3
In a laser beam machining method of processing a machining path having an acute angle in a CNC laser machining apparatus, the laser beam machining method comprising:
- previously reading a machining program, to thereby detect that the acute angle of the machining path is not greater than a preset allowable angle;
- moving a workpiece for cutting to the vertex of the acute angle under normal machining conditions;
- automatically stopping the application of a laser beam when said vertex is reached;
- ejecting a cooling medium for a predetermined time;
- drilling the workpiece under set drilling conditions after the passage of said predetermined time;
- and
- continuing the cutting work under the normal cutting conditions.
Dependencies are inferred from the claim text.