Automotive parts processing is an important link in the automotive manufacturing process, mainly including casting and forging processes. The following matters need to be paid attention to during the machining of automotive parts: Select the appropriate CNC Machining materials, and select the appropriate materials according to the requirements of the parts to ensure that the parts have good durability, strength and heat resistance. Design and manufacture a suitable fixture. The fixture is an important tool in the machining process, which can guarantee the stability and accuracy of the workpiece during the machining process. Therefore, it is necessary to design and manufacture a suitable fixture according to the shape and requirements of the part. Layer is thickened with a knife of different lengths, and the residue is removed with a knife to improve the machining efficiency. For the case of a slope and an integer, it is necessary to use a slope tool for processing. Reasonably set tolerances to balance machining accuracy with computer calculation time to reduce blank edge time. For cases where the hardness of the blank material is high, reverse milling is selected. For cases where the hardness of the blank material is low, down milling is selected. For rough machining, better results can be obtained by using an inverted milling cutter. For finishing, choose tool materials with good toughness and low hardness. The above are the main things to pay attention to during the machining of automotive parts. Good part machining is essential to ensure the performance and long-term reliability of the car.