After the blanking is completed, it enters the next process, and different workpieces enter the corresponding process according to the processing requirements. There are bending, riveting, flanging and tapping, spot welding, convex bulging, and step difference. Sometimes, after bending one or two passes, the nut or stud must be pressed. Among them, the mold has convex bulging and step difference. Processing first, so as not to interfere with other processes after the first processing, the required processing cannot be completed. When there is a hook on the upper cover or the lower case, if it cannot be welded after bending, it must be processed before bending.

When bending, you must first determine the tools and sipes used for bending according to the size and material thickness of the drawing. Avoiding the collision between the product and the tool is the key to the selection of the upper mold (in the same product, it may be used The upper mold of different models), the choice of the lower mold is determined according to the thickness of the plate. The second is to determine the sequence of bending. The general rule of bending is inside first, then outside, first small and then big, first special and then ordinary. The workpiece with the dead edge is first bent to 30 ° -40 °, and then the workpiece is crushed to death with a leveling die.

When pressing the riveting, we must consider the height of the studs and choose the same different mold, and then adjust the pressure of the press to ensure that the studs and the surface of the workpiece are flush. scrapped.

Welding includes argon arc welding, spot welding, carbon dioxide shielding welding, manual arc welding, etc. Spot welding must first consider the position of the workpiece welding, and consider the positioning tool to ensure accurate spot welding position in mass production.