LASER BEAM MACHINING DEVICE AND LASER BEAM MACHINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a laser beam machining device which can more reliably eliminate chips such as dust generated in laser beam machining, and to provide a laser beam machining method using the laser beam machining device.SOLUTION: A laser beam machining device 1 machines a workpiece W by a laser beam. The laser beam machining device 1 includes: a laser oscillator 18 which emits a laser beam emitted to the workpiece W; a liquid jetting means 6 which has a nozzle 14 and injects a jet fluid F from the nozzle 14; an installation base 9 on which the workpiece W is installed; a head side suction means 46 which sucks a space 52 around the nozzle 14; an installation base side suction means 48 which is arranged on the installation base 9 and sucks a space in a periphery of a surface of the installation base 9 from a rear surface side; and a suction force control device 60 which controls suction force of the head side suction means 46 and the installation base side suction means 48.