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简答题求Tr50³12梯形外螺纹的小径d3,中径d2,牙顶宽f,及牙槽宽W。
  • 已知:d=50mm,p=12mmd3=d−2(0.5p+a0)=50-2×(0.5×12+0.5)=37mmd2=d−0.5p=50-0.5×12=44mmf=0.366p=0.366×12=4.392mmW=0.366p-0.536a0=0.366×12-0.536×0.5=4.124mm
    螺纹的小径是37mm,中径是44mm,牙顶宽是4.392mm,牙槽宽是4.124mm。
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