Precision stamping parts processed by precision stamping technology have the advantages of large size range, complex shape and high precision. They are widely used in automobile, medical, aviation and other industries. The processing technology of precision stamping parts is more complicated. If you want to ensure the forming effect of stamping parts, you need to pay attention to the following matters when processing precision stamping parts:
1. The number of processes of precision stamping parts mainly depends on its structure. The complexity of the shape is determined by the number, relative position, and direction of the bending angles. When the bending radius of the bent part is smaller than the allowable value, a shaping process is added after bending.
2. The number of processes for precision stamping parts is related to the material properties, drawing height, number of drawing steps, drawing diameter, material thickness and other conditions, and can only be determined after drawing process calculations. When the corner radius of the drawn parts is small or the dimensional accuracy requirements are high, a shaping process needs to be added after drawing.
3. The determination of the number of processes should also be consistent with the company's existing mold making capabilities and stamping equipment. Moldmaking capabilities should be able to ensure the corresponding improvement in mold processing and assembly accuracy. Otherwise, the number of processes can only be increased.
4. When the cross-sectional quality and dimensional accuracy requirements of precision stamping parts are high, you can consider adding a trimming process after the blanking process or directly using the precision blanking process.
5. In order to improve the stability of the precision stamping process, it is sometimes necessary to increase the number of processes to ensure the quality of precision stamping parts. For example, additional positioning process hole punching for bent parts, deformation reduction hole punching during the forming process to transfer the deformation area, etc.
6. Blanking precision stamping parts with simple shapes is completed using a single-process mold. When punching workpieces with complex shapes, due to the limitation of the structure or strength of the mold, the inner and outer contours should be divided into several parts for punching, and multiple stamping processes are required.
7. Special stamping oil should be used for precision stamping. Rapeseed oil, machine oil, recycled oil and other non-special oils do not contain additives suitable for stamping, which will affect the accuracy of the workpiece. Quality problems such as falling, burrs, surface pits and damage. Moreover, the chemical substances in non-special oil products can cause rust on the machine and cause skin allergies among workers.
This is the end of today’s introduction to the precautions for precision stamping parts processing. There are many steps in the processing of precision stamping parts. Workers should understand the precautions for each step in detail and operate them correctly to avoid mistakes and affect the quality of product molding.