The machining process of automotive molds usually includes the following steps:

1. Design: Firstly, it is necessary to design according to the requirements of the car mold. The design process includes determining the shape, size, material, and other parameters of the mold.

2. Making a mold model: Then, it is necessary to make a model of the mold. This typically involves using computer-aided design (CAD) software to create a 3D model of the mold.

3. Making a mold prototype: Next, we need to make a prototype of the mold. This usually involves using 3D printing technology to create prototypes of molds.

4. Machining: Then, it is necessary to use machining equipment (such as milling machines, lathes, etc.) to process the prototype of the mold. This usually involves using high-speed rotating cutting tools to cut and shape the shape of the mold.

5. Welding: Next, welding equipment (such as arc welding machines, resistance welding machines, etc.) needs to be used to weld various parts of the mold. This usually involves using high-temperature arcs or resistors to melt and connect various parts of the mold.

6. Inspection: It is necessary to inspect the mold to ensure that it meets the design requirements. This usually involves using various measuring devices such as calipers, height gauges, etc. to measure the size and shape of the mold.