Patent ID: 8330075
Filing Date: 2012-12-11
Classification: B23K

Abstract:
1. A control method of optical cutting using a laser processing module to cut a work piece, wherein the laser processing module generating a cutting heat source and an auxiliary cutting heat source for an actual cut to coincide with a predetermined cutting path, and said control method of optical cutting comprising the following steps of: (a) determining the cutting path on the work piece; (b) calculating a distribution of a thermal stress along the cutting path, according to a heating condition, a shape of the path, as wells as a geometrical shape, thickness and material of the work piece, wherein the thermal stress includes a normal stress and shear stresses; (c) determining an irradiation condition for the auxiliary cutting heat source according to the distribution of the shear stresses induced by the cutting heat source for counter-balancing and eliminating the shear stresses; and (d) irradiating the work piece along the cutting path with the cutting heat source and simultaneously irradiating the work piece with the auxiliary heat source according to the irradiation condition.