Process design of progressive die based on TopSolid

Since most of the current progressive die design is based on two-dimensional graphic design, it can only design the progressive die of simple sheet metal parts (such as the silicon steel progressive die of the motor, etc.), which is difficult to compare with other production Link links to achieve seamless sharing of data models. On the basis of TopSolid, the French company Missler launched a fully integrated TopSolid/Progress progressive die design module. This module follows the progressive die design specification and realizes the sharing of product data models, making the progressive die design process more intuitive and convenient Efficient. The following is a brief introduction to TopSolid/Progress, the progressive die design module.　　TopSolid is one of the few systems in the world that fully integrates progressive chess design and CAD/CAM. Its progressive die design module Topsolid/Progress includes two major parts: Yuyi design and mold design.　　From the call and identification of sheet metal parts, to the design of the forming process of each station, the formation of concave and convex molds, to the final design of the mold base to draw two-dimensional engineering drawings. The process design sees an important link that determines the success or failure of the mold.　　1. Position definition　　The first step in progressive die design is the layout of parts. In Topsolid/Progress, various parts can be nested according to design requirements. Then there is the product forming process design. The designer can arbitrarily specify and adjust the number of stations and the center position of the station. The system automatically prompts the maximum small step range according to the parts. If you find that the number of stations is too much or too little, you can add or delete them at any time in future operations. After defining the station and position, the system automatically generates a solid model with material and two wire frame contours according to the contour of the part and the station, which is convenient for defining the blanking contour shape later. The layout design is shown in Figure 1. 2. Specific process design. The quality of the product forming process will directly affect the quality of the product. Topsolid/Porgress can customize the contour shape, or create a shape that is completely consistent with the part according to the wire frame contour of the automatic production of the system. Under art design, and the whole design process is fully parametrically related.　　 For the stretch forming and bending forming part of the product, the stop connection is automatically generated according to the shape of the whole sheet part. In the stretch forming, the system automatically calls the standard stretched shape used in the design of sheet metal parts to perform a forming. Next-the version system will support the step-by-step drawing process design for a single drawing forming. In the bending process, the system automatically filters the curved surface, which is convenient for selection, and supports step-by-step bending, which effectively prevents the springback of parts due to material factors. Each step of the entire process can be adjusted and modified freely. After all the forming process settings are completed, use the analysis function of the system to analyze the force situation of each station and the position of the single station and the overall force point (Figure 3). Through force analysis, the process operation of each station is adjusted, so as to make the center of force in the center of the mold base as much as possible.