LASER BEAM PROCESSING METHOD AND LASER BEAM PROCESSING MACHINE

摘要

PROBLEM TO BE SOLVED: To make it possible to execute the gapping of a polygonal shape by a laser beam machine at a high speed. SOLUTION: The polygonal shape 1 to be gapped is defined in a step 1 (S1). All the sides of the polygonal shape to be gapped are turned one round in the smooth routes and the moving route 2 to satisfy the requirement for starting from the inner side region of the polygonal shape is determined in the case of the entry to the route on the polygonal shape in a step 2 (S2). The output of a laser beam is started just before the entry to the route on the polygonal shape 1 and a processing head is moved on the moving route 2 without stopping in mid-way while the laser beam output is stopped in the position parting from the route on the polygonal shape 1. As a result, the beam output block 3 on the moving route 2 is cut and the regions 4 on the inner side of the desired polygonal shape 1 are gapped in a step 3 (S3).