Stamping is a forming method of applying external force to plates, strips, pipes and profiles by using presses and dies to make them plastically deform or separate, so as to obtain workpieces with required shapes and sizes. Precision stamping parts manufactured by precision stamping technology have the advantages of large size range, complex shape and high precision, and are widely used in various fields. However, the process of precision stamping parts is more complicated. In order to ensure the forming effect of stamping parts, the following technological matters should be paid attention to when using precision stamping parts:

1, the number of working procedures of precision stamping parts mainly depends on the complexity of its structure and shape, and depends on the number of bending angles, relative positions and bending directions. When the bending radius of the bending part is less than the allowable value, the shaping process is added after bending.

2. The number of processes of precision stamping parts is related to material properties, drawing height, drawing steps, drawing diameter, material thickness and other conditions, and can only be determined by drawing process calculation. When the fillet radius of the drawing part is small or the dimensional accuracy is high, it is necessary to add a shaping process after drawing.

3, the determination of the number of processes should also be consistent with the existing forming capacity of enterprises and the status of stamping equipment. Mold-making ability should ensure the corresponding improvement of mold processing and assembly accuracy, otherwise it can only increase the number of processes.

4. When the section quality and dimensional accuracy of precision stamping parts are required, we can consider adding trimming process after blanking process or directly adopting precision blanking process.

5. In order to improve the stability of precision stamping process, it is sometimes necessary to increase the number of processes to ensure the quality of precision stamping parts. For example, the additional positioning process hole punching of bending parts, the additional deformation release hole punching in the forming process to transfer the deformation area and so on.

6. The stamping of precision stamping parts with simple shape is completed by single-process die. Due to the limited structure or strength of the die, the inner and outer contours of the workpiece with complex blanking shape should be divided into several parts, and multiple stamping processes should be adopted.

7. The use of special stamping oil can effectively improve the process precision, and fundamentally eliminate the problems such as yellow robe and skin irritation caused by non-special oil products such as rapeseed oil, mechanical oil and recycled oil.

There are many process steps for precision stamping parts, and the staff should know the precautions of each step in detail and strictly implement the operation flow specification.