Calculation of expanded length of sheet metal

The bending work must be involved in the manufacturing process of sheet metal parts. Before the bending process, the machining dimensions and notch positions of various parts shall be clearly marked on the corresponding drawings to avoid the decline of product qualification rate due to the error of hole position and overall dimension in the subsequent laser cutting and other operations.

A reasonable processing method can make the product tolerance within the range of good products. At the same time, it is also convenient for the design of processing mode and the formulation of processing scheme. Different raw materials of sheet metal parts will stretch due to the action of bending moment. Especially in the process of tension and compression, the length of the neutral layer will not change significantly, and there will be great differences in the overall development length of the inner and outer layers. Therefore, calculating the length of the neutral layer has a high reference value.

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