1. Blanking: Blanking is precision sheet metal processing that cuts materials into the desired shape based on unfolding. There are many methods for cutting materials, which can be divided into cutting, punching, and laser cutting according to the type of machine tool and working principle.

2. Flanging: also known as drilling or flipping, it refers to drawing a slightly larger hole on a smaller base hole and then tapping it. It is mainly processed with thin sheet metal to increase its strength and number of thread turns to avoid slipping. It is generally used for shallow flanging with thin plate thickness and normal hole circumference, and the thickness remains basically unchanged. When there is a thinning of 30-40% of the thickness, a height of 40-60% higher than the normal flanging height can be obtained. When 50% thinning is used, A large flanging height can be obtained, and when the plate thickness is large, such as 2.0, 2.5 or above, it can be directly tapped.

3. Punching machine: It is a processing process that uses molds to form. Generally, punching machines process various processing methods such as punching, corner cutting, blanking, punching convex (convex points), punching tearing, hole drawing, and forming. The processing requires corresponding molds to complete operations, such as punching and blanking molds, convex package molds, tearing molds, hole drawing molds, and forming molds. The main focus of operations is on position and directionality.

4. Pressure riveting: Pressure riveting mainly includes pressure riveting nuts, screws, looseness, etc. It is completed through hydraulic pressure riveting machines or punches to rivet them onto sheet metal parts, and there is also an expansion riveting method, which needs to pay attention to directionality.

5. Bending; Bending is the process of folding 2D flat parts into 3D parts. Its processing requires a bending machine and corresponding bending molds to complete, and it also has a certain bending sequence. The principle is to fold first without interference to the next tool, and then fold later if there is interference.

6. Welding: The distance between the atoms and molecules of the material being welded and the Jingda lattice is formed as a whole.