LASER BEAM MACHINING EQUIPMENT

摘要

Laser beam machining equipment, comprising a laser beam transmitter (11) for transmitting laser beam, a machining head (21) for radiating the laser beam transmitted from the laser beam transmitter (11) on a work (100), an optical path duct (30) having an optical system for leading the laser beam from the laser beam transmitting port (12) of the laser beam transmitter (11) to the machining head (21), a purge gas feed means (42) for feeding purge gas from a purge gas feed port (35) provided near the connection part of the optical path duct (30) to the laser beam transmitter (11), and a purge gas discharge port (36) provided near the connection part of the optical path duct (30) to the machining head (21), wherein a gas detection part (50) for detecting the mixing of impurity gases causing a trouble with the output of the laser beam is installed in the optical path duct (30).