The invention relates to the technical field of non-traditional
machining, in particular to a thin-wall curved surface part micro group hole and special-shaped hole
cutting process
machining method based on
laser field lens
light beam scanning, which comprises the following steps: S1, dividing N
machining areas on the curved surface of a thin-wall curved surface part according to a single
laser scanning machining area; s2, automatic
laser focus searching is conducted on each machining area, and focus position data scanned by a laser beam during
automatic focus searching are recorded into a machining program; s3, micro group holes and special-shaped holes in the thin-wall curved-surface part are scanned and machined through a flat field lens by adopting light beams of a movable light type laser field lens; and S4, cleaning and checking are conducted, and finished parts are obtained. Ultrafast laser is adopted as an
energy source, a high-speed
galvanometer and a flat field lens are combined, a laser focus regional
automatic focus searching process and a dynamic light type
light beam scanning
processing process are innovatively developed, and the laser field lens
light beam scanning process is adopted to realize scanning
cutting processing of thin-wall micro group holes, special-shaped holes and thin-wall outlines.