The door hinge is a device used to connect the car door to the vehicle body, mainly made of steel or stainless steel. The material has low hardness and requires sharp cutting tools.

The steering gear is the core component of the steering system, and the main material of the steering gear housing is ductile iron, which mainly involves machining processes such as hole machining, groove cutting, and milling.

The material of the rear axle housing is mainly steel parts. The main processing difficulties are as follows: 1. There are welding scars in some positions, making the processing difficult; 2. The parts of the axle body are irregular, with poor clamping rigidity and clamping stability, and low tool life.

The function of the axle is to bear the load of the car and maintain its normal operation on the road.

The transmission shaft is an important component in the automotive transmission system that transmits power from the engine to the wheels.

The car differential housing is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds.

The exhaust manifold is connected to the engine cylinder block, collecting the exhaust gas from each cylinder and guiding it into the exhaust manifold. Its function is to minimize exhaust resistance and prevent cylinder interference. Mainly including surface milling, drilling, non-standard slotting, milling and other processing steps

The camshaft is an important component used for matching the piston and valve in the engine cylinder, mainly made of high-strength alloy steel and cast iron. Mainly including machining steps such as turning, slotting, and surface milling

The crankshaft is one of the important components of the engine, converts the reciprocating motion of the piston and connecting rod into rotational motion. The materials of the crankshaft mainly include ductile iron and forged steel. Mainly including internal and external milling, turning, drilling and other processing steps.