Laser-assisted machining device

A laser-assisted machining device adapted to be mounted on a machining tool, comprising:

• a laser generating unit adapted to be mounted on the machining tool for generating a main laser beam;
• a spindle including
• a hollow shaft body that is adapted to be mounted rotatably on the machining tool and that is spaced apart from said laser generating unit,
• a hollow shaft core that is mounted co-rotatably in said shaft body, and that has a channel extending along a longitudinal axis of said hollow shaft core, and an entry hole communicating with said channel and the external environment, and
• a plate body that is connected co-rotatably to and that surrounds said hollow shaft core and that defines a chamber in spatial communication with said channel, said plate body having a light output surface that is disposed opposite to said entry hole along the longitudinal axis, and a plurality of exit holes that are formed in said light output surface and that communicate with said chamber;
• a beam splitting module disposed in said spindle and including
• a beam splitter that is disposed in said channel for splitting the main laser beam into a plurality of secondary laser beams that are directed into said chamber, and
• an outer reflecting unit that is mounted in said chamber for reflecting the secondary laser beams out of said spindle through said exit holes;
• and
• a cutting tool fixedly mounted on said spindle, adapted for machining an workpiece, and including a plurality of cutting teeth, the secondary laser beams traveling respectively through said exit holes to irradiate respectively a plurality of processing areas the workpiece, such that, during rotation of said spindle, the secondary laser beams maintain constant irradiation on the processing areas.