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钣金件一般折弯以及z形折弯的展开计算原理

Source: 本站 | Date of issue: 2017-12-14 12:56:33 | Views: 3379
Abstract: 一般折弯:(R=0,θ=90)L=A+B+K1.)当0<T≦0.3时,K=02.)对于铁材如(SGCC、SECC、SPTE、SPHC、SPCC、GI、CRS等)a.当0<T<1.5时,K=0.4Tb.当1.5≦T<2.5时,K=0.35Tc.当T≧2.5时,K=0.3T3.)对于其他有色金属材料如AL、CU等当T>0.3时,K=0.4T4.)当R<3.0时,按R=0处理。
  一般折弯:(R=0,θ=90°)L=A+B+K1.)当0<T≦0.3时,K=02.)对于铁材如(SGCC、SECC、SPTE、SPHC、SPCC、GI、CRS等)a.当0<T<1.5时,K=0.4Tb.当1.5≦T<2.5时,K=0.35Tc.当T≧2.5时,K=0.3T3.)对于其他有色金属材料如AL、CU等当T>0.3时,K=0.4T4.)当R<3.0时,按R=0处理。
  
  一般折弯(R≠0,θ=90°)L=A+B+KK值取中性层弧长:1、T<1.5时,α=0.5T;2、当T≧1.5时,α=0.4T4。
  
  一般折弯(R=0,θ≠90°)L=A+B+K′:1、当T≦0.3时,K′=0;2、当T>0.3时,K′=(θ/90°)*K3.K为90°时的展开系数。
  
  一般折弯(R≠0,θ≠90°)L=A+B+K:1、当T<1.5时,α=0.5T2,当T≧1.5时,α=0.4T3.K值取中性层弧长4.当R<2.0T时,则按R=0来计算,A、B依倒零角后的直边长度取值。
  
  Z形折弯(直边断差):1、当H≧5T,分两次成形时,按两个90°折弯计算;2、当2.5T≦H<5T,一次成形时,按两个90°折弯计算;3、当H<2.5T,一次成形时,展开长度=展开前总长度+K,(K=0.2)。
  
  Z形折弯(斜边断差):1、当H≧5T,分两次成形时,按两个90°折弯计算;2、当2.5T≦H<5T,一次成形时,按两个90°折弯计算;3、当H<2.5T,一次成形时,展开长度=展开前总长度+K。
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