CUTTING METHOD BY LASER BEAM

摘要

PURPOSE:To provide the cutting method by laser beams capable of increasing the cutting thickness by laser beam cutting. CONSTITUTION:A first laser beam 1 in the front in the cutting proceeding direction and a second laser beam 2 in the rear in the cutting proceeding direction cross each other at a point P in the cutting surface. The upper part A of material is melted and cut by the first laser beam 1 and the lower part B of the material is melted and cut by the second laser beam 2. Consequently, a metal plate having the thickness of about two times as much as the cutting thickness can be cut.