The metal stamping parts use the sum theory to achieve less waste-free blanking. On the premise that the technical requirements for precision Metal Stamping Parts design and the component have no rigid requirements on the material fiber direction, in addition to the general sheet metal layout principles (such as Reduce the loss of scrap at the end of the strip. When cutting narrow strips, it should be carried out along the length of the board; the parts should be arranged as wide as possible to reduce the number of cuts and the feeding distance during stamping; (Feeding without a fixed distance knife can reduce the overlap and strip width). Try to use less waste and no waste blanking and punching technology.

Changing the shape of metal stamping parts to achieve less waste and blanking. In general, product designers design parts according to use requirements and craftsmen compile processes based on part product drawings. This is logical. However, sometimes materials are sent to the waste bin by the designers' hands, causing waste. Therefore, in the analysis of the stamping process and the selection of the process plan for the part, the shape of the part is appropriately changed so that the part after the change of shape can be a combined figure, and the parts are joined together without any gap between the parts and the blank. Can achieve less waste-free blanking and punching, which can not only improve material utilization (up to 100%), but also improve production efficiency, reduce the difficulty of processing the die, and help improve product quality.

Small and large parts of metal stamping parts can be cut without waste. In actual production, due to the limitation of the plate specifications, some parts produce a large amount of waste during the punching and layout, resulting in waste. In large-scale stamping production, the blanks of parts with similar specifications and coordinated output of two or more materials can be blanked on the same sheet to reduce or even eliminate punching waste and material consumption. .

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