Many metal materials require special treatment to maintain their integrity, otherwise scratches are prone to appear in many transfer items. For workpieces with high material requirements, this type of problem is very difficult, so many metal materials will have coatings.

Laser cutting uses a high-power density laser beam to irradiate the material to be cut to quickly heat the material to the evaporation temperature and evaporate to form holes. When the beam moves toward the material, the hole is continuously formed into a narrow width (for example, about 0.1 mm). Cut the seams to complete the cutting of the material.

Gears are wheel-shaped mechanical parts that rely on the meshing of teeth to transmit torque. The gear is driven by other toothed mechanical parts (such as another gear, rack, worm) to achieve functions such as changing the speed and torque, changing the direction of motion, and changing the form of motion