How to design the layout of stamping parts and share several common layout diagrams

The cost of stamping parts production is mainly the cost of raw materials. According to statistics, the cost of raw materials in stamping parts accounts for more than 60% of the entire product cost. Therefore, the reasonable use of materials is a very important issue in the production of stamping parts. The arrangement method of stamping parts on steel strip or steel plate is called stamping and nesting. If the layout design is unreasonable, it will cause a waste of materials. To determine whether the layout is reasonable is mainly based on the utilization rate of the reference material, that is, the percentage of the actual surface of the workpiece to the material surface. Reduce the area of u200bu200bwaste generated, then the utilization rate of the material is higher. There are two types of waste materials: process waste and structural waste. Overlap and remaining material belong to process waste, which is waste related to layout and stamping methods. Structural waste is determined by the shape and characteristics of the workpiece. To improve material utilization, we should start from reducing process waste and design a reasonable stamping layout plan. From the following nesting diagram, we can see that the material utilization rate of the first nesting method is only 53%, while the utilization rate of the second nesting method has been increased to 68.5%, which has an impact on the cost of stamping parts. Very big. The utilization rate of materials is also related to the shape of the stamping parts. For the contact spring in the picture, the utilization rate of the original shape material is only 41%. Under the condition of ensuring the hole distance, if the shape of the product is modified, the utilization rate of the material can be increased to 92.5%, which greatly reduces the product cost. All in the case of the customer's permission, you can also consider changing the shape of the stamping parts. As shown in the figure, the layout of stamping parts can be divided into three layout methods: waste layout, less waste layout and no waste layout. Layout with less and no waste is of great significance for reducing the formation of stamping parts, and is conducive to stamping multiple products at the same time, which improves production efficiency. At the same time, because the punching circumference is reduced, the structure of the punching die can be simplified and the punching force can be reduced. The material utilization rate of waste-free nesting can reach 95%, and the material utilization rate of waste-less nesting can also reach 70%-90%. The figure shows the layout of several common shapes of stamping parts. You can refer to it when designing stamping and layout. Previous post: The characteristics of small hardware stamping parts enterprises, for those who are about to work in the stamping factory