The designed metal stamping parts must meet the product usage and technical performance requirements, and be convenient for assembly and repair.

2. The designed metal stamping parts must be conducive to improving the utilization rate of metal materials, reducing the variety and specifications of materials, and minimizing material consumption as much as possible. Where permitted, use low-cost materials and strive to make the parts with minimal or no waste during blanking.

3. The designed metal stamping parts must have a simple shape and a reasonable structure to facilitate the simplification of the die structure and the reduction of the number of processes, that is, to complete the processing of the entire part with the fewest and simplest stamping processes, reduce the need for further processing by other methods, and be conducive to stamping operations, facilitating the organization and realization of mechanized and automated production to improve labor productivity.

4. For the designed metal stamping parts, under the condition of ensuring normal use, the dimensional accuracy grade and surface roughness grade requirements should be as low as possible, which is conducive to product interchangeability, reduces waste products and ensures stable product quality.

5. The designed metal stamping parts should be conducive to processing them with existing equipment, process equipment and process flows as much as possible, and be beneficial to the extension of the service life of the die.