Method for preventing processing defect in laser processing

摘要

The invention provides a laser processing system in which a heat density accumulated in a base material is computed based on nesting data in order to create an NC program for preventing processing defects. Upon cutting out works W 1 through W 9 from a base material B 1 , a nesting area N 1 is defined as a sum of the lengths of lines S 1 through S 4 , which is defined as NG 1 . A laser processing length dimension of the works W 1 through W 9 is computed by adding the line lengths L 1 through L 4 and the circumferential length C 1 of a round hole and multiplying the result by nine, which is defined as LG 1 . The heat density HF 1 is computed as HF 1 = LG 1 /NG 1 , and the heat density is compared with a parameter set in advance in order to determine a processing order for preventing processing defects by heat and to create a corresponding program.