Rim
Wheel rims bear the weight of the tires and transmit driving and braking torques, directly affecting vehicle safety, handling stability, and energy efficiency. They are mostly made of lightweight materials such as aluminum alloys. Because one-piece wheel rims are thin-walled and geometrically complex rotating components, they are susceptible to deformation due to residual stress and processing heat during forming, deep hole machining, and subsequent finishing. Therefore, manufacturing must precisely control roundness, concentricity, hole position, dimensional tolerances, and surface quality, while avoiding stress concentration and fatigue crack formation.
Roundness and concentricity machining; deep hole machining