With the rapid development of the economy and the diversification of market demand, people have shorter and shorter requirements on the production cycle, especially in small batches and even single-piece production. It requires modern manufacturing technology not only to have higher flexibility, but also Updated production models that better meet the rapidly changing market requirements. The rapid forming technology of the numerical control unit stamping die is produced to adapt to this state.
The shape of the element can be divided into simple graphic elements and then the desired graphic is synthesized. For example: a rectangle is a synthesis of 4 right angles; a wave shape is a combination of some curves. Therefore, for some small-volume or even single-piece sheet metal parts with high precision requirements, some general-purpose parts can be quickly assembled into unit stamping dies, and numerical control technology is adopted to make rapid forming. The processed sheet metal piece is regarded as a flat graphic that can be divided, and the divided simple graphic elements are digitized. That is, the positioning code is performed according to its orientation. As shown in Fig. 1, the digitization of the non-equidistant simple graphic parts, the (Δx, Δy) of the notches 1, 2, 3, and 4 are equal, and the (Δx, Δy) of the square hole 5 is equal to 2 times (Δx, Δy). ), if the width of the existing universal punch is equal to Δx and the length is equal to Δy, it is numbered as shown in FIG. The notch 1 is synthesized by the position (2, 0) and the position (3, 0), and the notches 2, 3, and 4 are also synthesized by two positions, and the square holes are synthesized by eight positions. If the rectangular unit is rapidly formed, a two-dimensional code as shown in FIG. 2 can be obtained, and the code obtained is too long due to the fine division. If a square unit is used for rapid prototyping, a two-dimensional code as shown in Fig. 3 can be obtained, which is reduced by half.