LASER PIERCING METHOD AND MACHINING EQUIPMENT

摘要

In processing equipment, a machining portion of a subject (W) to be machined is irradiated with a laser beam (L2), an assist gas (G) is jetted toward the machining portion from a nozzle (3) coaxially arranged with the laser beam (L2) to cover the machining portion with the assist gas (G), and a piercing hole (H) is machined at the machining portion. The machining equipment is provided with a control means (10) for machining the piercing hole (H) while shifting the nozzle (3) within a range from a machining start point to 5mm, after starting irradiation of the laser beams (L2).