(1) Precision principle: The number of drawing processes for deep drawing parts is related to material properties, drawing height, number of drawing steps, drawing diameter, material thickness, etc.
(2) Principle of precision: The number of processes for bending parts primarily depends on the degree of disorder in their structural shape, and needs to be determined based on the number of bending angles and bending direction.
(3) Exquisite principle: When the cross-sectional quality and standard accuracy requirements of stamped parts are high, it can be considered to add a trimming process after the punching process or directly choose a fine punching process.
(4) Exquisite principle: When punching workpieces with simple shapes, a single process mold can be used to complete the process. However, when punching workpieces with disorderly shapes, due to limitations in the structure or strength of the mold, the table should be divided into several parts for punching, and multiple hardware stamping processes need to be selected.
(5) Principle of Excellence: In order to ensure the quality of precision hardware stamping parts, sometimes a number of processes are required. For example, the additional process of punching holes for bent parts, and the addition of deformation reduction holes for punching in forming processes to transfer deformation areas, ensuring a fine and exquisite quality.
