Difficult point forming technology for precision sheet metal processing

The planning of the fine sheet metal forming process involves many factors, such as the size of the mold (the title of the mother), the shape of the blank, the thickness of the sheet, the blank holder force, the resistance of the drawbead, the conflict, the lubrication, and the like. The use of sheet metal processing in Shanghai is becoming more and more extensive, and the planning of sheet metal parts has become an important part of the product development process. Mechanical engineers must be proficient in the planning skills of sheet metal parts, so that the planning of sheet metal is both Satisfactory product requirements and appearance requirements, but also make stamping molds simple to manufacture and low cost. Shanghai chassis processing sheet metal chassis processing data will be sent to the CNC punch / cut start, punching / cutting process. In the bending process, the main considerations are tool selection, bending times, bending compensation, bending and so on.

According to the sheet metal cabinet product, the welding, grinding, painting, assembling, packaging and other processes are carried out. The determination of the shape of the blank is an important issue in the sheet metal forming process planning (Emerson). If the shape of the blank is reasonable, the uneven distribution of the deformation along the blank can be significantly improved, the forming limit can be improved, the height of the lug can be lowered, the trimming allowance can be minimized, the material can be saved, and the material can be saved. Maximizing the reduction can even eliminate the subsequent trimming process, which greatly reduces the production cost; on the other hand, the reasonable blank shape can improve the strain distribution of the material in the forming process and maximize the reduction of defects. Improve the quality of the product.

Shanghai Jinjin

    For any sheet metal part, fine sheet metal processing has a certain processing process (guò chéng), which is also called the process flow (liú chéng). Following the difference in sheet metal structure, the process flow (liú chéng) Maybe different, but the total does not exceed the following points.

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

2. Make an open picture. It is also to open a structurally complex part into a flat piece.

3. Unloading. There are many ways to cut the material. Shanghai Jinjin processing technology, the gold has stopped to have no better definition. According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold-working process for metal sheets (usually below 6mm), including shearing, punching/cutting/compositing, folding, riveting, Stitching, forming (such as car body).