How to determine the edge value in stamping processing?

Recently, someone used stamping stainless steel to search for edge value. What is edge edge first? What is the use of lap in stamping processing, what factors will affect the lap value, and how does the stamping part manufacturer determine the appropriate lap value? Don't worry, let's introduce it to you below. When stamping and nesting, there is waste between the workpiece or the side of the workpiece and the strip, which is called the overlapped edge. Although the rim is a waste material, it has a great effect in the process. The role of the rim is: (1) Maintain a certain rigidity of the strip so that it can be fed. (2) Compensate the positioning error, even if there is a certain error, the workpiece will not be washed away. There are many factors that affect the value of the tie-up, mainly as follows: (1) Material properties The harder the material, the smaller the tie-up value. (2) Material thickness When punching thin materials, in order to maintain good rigidity, a larger lap value should be used, but for thick materials to ensure that the lap does not break, a larger lap value should also be used. (3) The larger the working size, the more complex the shape and the larger the value of the tie-up. (4) The feeding method uses a side pressure plate to make the strip close to one side for feeding, and a smaller overlap value can be used. Reasonable lap width is the Minimum width to ensure the quality of the cut surface of the stamping part and increase the life of the mold. Overlap edges with too small width will be broken during the punching process, causing elongated burrs on the metal stamping parts and affecting feeding. It will also make the blanking parts uneven, and even pull the overlapping edges into the gap of the blanking die, causing serious wear or damage to the cutting edge; excessively large overlapping edges not only reduce the utilization rate of the material, but also increase the unloading of the mold. Material force. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automobile stamping parts molds Learn more: Points to note in the design of continuous stamping dies (2)