Die design procedure

1. Conduct feasibility analysis on the designed mold product, taking a computer case as an example. Firstly, use design software to assemble and analyze the product drawings of each component, which is what we refer to as a set of drawings in our work, to ensure the correctness of each product drawing before mold design. On the other hand, we can familiarize ourselves with the importance of each component in the entire case to determine the size, which is very beneficial in mold design. The specific set of drawings method will not be described in detail here.

2. The work that needs to be carried out after product analysis is to analyze the product using what kind of mold structure, arrange the product processes, determine the punching content of each process, and use design software to unfold the product. When unfolding the product, it is generally carried out from the subsequent engineering to the front. For example, if one product requires five processes, after punching is completed, it starts from the product drawing to the fourth engineering, third engineering, second engineering, and first engineering. After unfolding a graphic, a copy is copied and the unfolding work of the previous engineering is carried out, that is, the product unfolding work of the five engineering is completed, and then detailed work is carried out. Note that this step is very important and requires special attention to detail. If this step is completed well, it will save time in drawing the mold drawing. Many times, after determining the stamping content for each project, In the forming mold, the inner and outer lines of the product material thickness are retained to determine the size of the convex and concave molds. The method of product unfolding will not be explained here and will be specifically introduced in the product unfolding method.

3. Material preparation: Prepare materials according to the product development diagram, determine the template dimensions in the drawing, including various fixed plates, unloading plates, convex and concave molds, inserts, etc. Pay attention to directly preparing materials in the product development diagram, which is very beneficial for drawing the mold drawing. I have seen many mold designers manually calculate the product development diagram to prepare materials, which is too inefficient. Directly drawing the template specifications and dimensions on the drawing in the form of an assembly diagram can complete the material preparation on the one hand, and save a lot of work in the work of various parts of the mold on the other hand, because in the work of drawing each component, only positioning, pins, guide columns, and screw holes need to be added in the material preparation drawing.

4. After the material preparation is completed, you can fully enter the drawing of the mold drawing. In the material preparation drawing, make another copy and draw each component, such as adding screw holes, guide column holes, positioning holes, etc. In the punching die, various holes need to be threaded with wire cutting, and in the forming die, the forming gap between the upper and lower dies must not be forgotten. Therefore, after these tasks are completed, the mold drawing of a product is almost 80% complete. In addition, during the process of drawing the mold drawing, attention should be paid to: each process, including production, such as fitter marking, wire cutting, etc., has a complete layer of production, which is very beneficial for wire cutting and drawing management, such as color differentiation, and size annotation. A very important job, but also a troublesome one because it wastes too much time.

5. After the completion of the above drawings, the drawings cannot be issued yet. It is necessary to verify the mold drawings, assemble all accessories, make different layers for each different mold plate, and analyze the mold assembly based on the same benchmark such as guide column holes. The unfolded drawings of each process product should be included in the assembly drawing to ensure that the hole positions of each template are consistent and that the upper and lower mold clearances at the bending positions are correctly matched.