Patent ID: 8053703

Claim:
A laser cutting device comprising: a laser source; a lens module configured for focusing a laser beam emitting from the laser source; a first rotating subassembly connected to the lens module and configured for driving the lens module to rotate relative to the laser source, wherein the first rotating subassembly comprises a first stator, a first rotor, and a first field coil, the first rotor is fixedly sleeved on the lens module and made of conductive materials, the first stator is sleeved on the first rotor, the first field coil is sleeved on the first stator, and the first rotor is driven to rotate when the first field coil is energized, such as to drive the lens module to rotate; a second rotating subassembly rotatably connected to the lens module; and a sprayer connected to the second rotating subassembly and being driven to rotate relative to the laser source by the second rotating subassembly.