| 摘要 |
PURPOSE:To provide a laser working device which prevents suspension of dust in optical paths for laser beams by providing a housing contg. laser oscillators, reflection mirrors and a condensing lens and an air feeder for supplying dust- free air into the housing. CONSTITUTION:The laser beams oscillated from laser oscillators 1 and 2 are reflected by reflection mirrors 3, 3', 4, 5, and are condensed with a focusing lens 6 and are irradiated to the working point of a work 13, by which working is accomplished. The external air taken in through an air intake port 21c in this stage is passed through a filter 15 and a dust catcher 18 by which the dust contained in the air is removed and thereafter the air is conducted through filters 16 and 17 to the inside of a housing 11 so as to be passed through the inside of the housing 11. The air is then discharged through the air discharging port 12a of a housing 12. As a result, the sticking of the dust on the surfaces of the reflection mirrors 3, 3', 4, 5 is prevented, by which the surfaces of the reflection mirrors are maintained always clean and the reflectivity of the reflection mirror and working efficiency are improved. |
