| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser beam machining device equipped with a dust discharging unit, in which dust generated by an abrasion processing does not disturb the light path of a laser beam.SOLUTION: A laser beam machining device is equipped with a dust discharging means which sucks in and discharges dust generated in the vicinity of a processing point caused by a laser beam being irradiated to a processed object, wherein the discharging mean is equipped with a first chamber which generates air flow flowing from a condenser side to the processing point side in the circumference of the laser beam passing through the interior and prevents the duct from heading to the condenser side, and a second chamber which sucks in and exhausts the dust, being communicated with the lower end of the first chamber. In the second chamber, a flow path branch portion is arrangedly provided, which branches the flow path of the dust heading to a suck-in/exhaust path through a bottom portion opening from the processing point into a first flow path and a second flow path in the both side direction of a processing groove centered at the laser beam. |
