The Application of CAD in the Progressive Die of the Connecting Rod

The main issues that should be paid attention to in the design of the mold structure are studied and discussed for the connecting rod stamping parts using the progressive die, and the process arrangement, the pressure center, the plate rib expansion, and the position of the concave and convex die in the progressive die are emphatically introduced. The determination of the size and the superiority of the reasonable combination of each station. Connecting rod stamping parts are commonly used as a connecting piece in the electrical industry, and have high dimensional accuracy requirements. They can transmit the connecting force forcefully. If the size cannot meet the product design requirements, it will affect the entire transmission mechanism of the product. Serious impact may cause the transmission mechanism to not work normally. Secondly, the shape of itself is more complicated, and a variety of stampings of different properties are integrated, so it is difficult to form.　　 There are two schemes for producing such parts: one is to realize the process in multiple simple molds dispersed by conventional processes, and the other is to realize the process in one set of progressive molds. The former requires a large number of equipment, molds, and workers, and the labor intensity of the workers is high. Also, because multiple molds are used to complete the entire production process of parts, various factors will cause accumulated errors in processing, especially for some high-precision, large-volume The quality and quantity of connecting rod parts are difficult to guarantee in a single-process mold. When the shape of the part is relatively complex and the shape is small, the strength of the concave and convex molds of the single process mold will be restricted, and it is difficult to deal with the positioning of the front and back processes, and the interference between the front and back processes.