任何形状的板金弯曲件,它们的展开长度,都是由该零件的直线段部分,加上各圆弧圓心角所对应的中性层弧长所组成。因此,板金弯曲件的展开计算.其实质也就是求圆弧中性层弧长A。它的计算通式是: A_0=0.001×17.45×(R+Kt)×α_0 上式计算比较繁琐,而且中性层系数K又是未知。虽然有关手册或书籍上可以找到,但 Any shape of sheet metal bending pieces, their unfolding length, are from the part of the straight line segment, plus each arc center angle corresponds to the neutral layer arc length of the composition. Therefore, the calculation of the bending of the sheet metal, the essence of which is to find the arc length of arc neutral layer A. It is calculated as follows: A_0 = 0.001 × 17.45 × (R + Kt) × α_0 The above formula is more complicated, and the neutral layer coefficient K is unknown. Although relevant manuals or books can be found, however