The design of the precision sheet metal forming process involves many factors, such as the size of the mold (name: the mother of industry), the shape of the blank, the thickness of the sheet, the blank holding force, the resistance of the draw bar, friction, lubrication, and so on. Sheet metal processing in Suzhou With the increasing application of sheet metal, the design of sheet metal parts has become an important part of the product development process. Mechanical engineers must be proficient in the design of sheet metal parts, so that the designed sheet metal It not only meets the requirements of product functions and appearance, but also makes the manufacturing of stamping dies simple and low cost. Suzhou chassis processing sheet metal chassis processing materials will be sent to CNC punch / cutting machine for punching / cutting process. The bending process mainly considers tool selection, bending sequence, bending compensation, bending interference and so on. According to the situation of the sheet metal chassis and cabinet products, welding, sanding, painting, assembly, packaging and other processes are performed. The determination of the blank shape is an important issue in the design of sheet metal forming process (Emerson). If the shape of the blank is reasonable, the phenomenon of uneven distribution of deformation along the blank can be significantly improved, the forming limit can be increased, and the height of the lug can be reduced, the cutting margin can be minimized, and the material can be saved. Minimize or even eliminate the subsequent trimming process, which greatly reduces production costs; on the other hand, a reasonable blank shape can improve the strain distribution of the material in the forming process (guò chéng) and minimize the occurrence of defects To improve the quality of the product.

    For any sheet metal part, precision sheet metal machining has a certain process (guò chéng), which is also called the process flow (liú chéng). With the difference in the structure of the sheet metal part, the process flow (liú chéng) It may be different, but the total does not exceed the following points.

1. Design and draw a part drawing of its sheet metal part, also called three views. Its role is to express the structure of its sheet metal part by drawing method.

2. Draw a developed view, that is, expand a complex structure into a flat piece.

3. Feeding. There are many ways to feed. Suzhou sheet metal processing technology, sheet metal has not yet had a relatively complete definition. According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold working process for thin metal plates (usually below 6mm), including shearing, punching / cutting / compositing, folding, riveting, splicing, Molding (such as car body).

Sheet metal processing