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ボルトの予緊力と取り付けトルクの換算方法

2018-12-03View Original

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ボルトの予圧力と取り付けトルクの換算方法を教えてください
Reply #22018-12-03
予緊トルク Mt=K×P0×d×0.001 N.m  K:締め付け係数  d:ねじの公称直径 mm  P0:予緊力 N  P0=σ0×As  Asは下の表からも求められる  As=π×ds×ds/4  ds:ねじ部の危険断面の計算直径  ds=(d2+d3)/2  d3= d1-H/6  H:ねじ山の公称作業高さ  σ0 =(0.5~0.7)σs  σs――――ボルト材料の降伏限界 N/mm2(強度等級に関連し、材質によって決まる)  K値の照査表:(K値の計算式は省略)ボルトの予緊力_百度百科 https://baike.baidu.com/item/%E8%9E%BA%E6%A0%93%E9%A2%84%E7%B4%A7%E5%8A%9B/9065484?fr=aladdin
Reply #32019-05-25
設置を行う人でなければ、これを計算する必要はないでしょう。設置規範には関連する規定があるはずです

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