軸直徑(扭矩)計算公式匯總

1、閥軸設(shè)計計算機械設(shè)計手冊 第3本第3章 軸的強度19-16按許用轉(zhuǎn)應(yīng)力計算公式實心軸d 35T式中 d-計算剖面處軸的直徑（mm）d 3 5*12314.68 T-軸傳遞的額定轉(zhuǎn)鉅（N/mm）20 T=9550000 P/nd 33078.67 -軸的許用轉(zhuǎn)應(yīng)力（Mpa)見表19.3-2d 14.547478第4章 軸的剛度19-28軸的扭轉(zhuǎn)變形計算584固定值 光軸實心軸=584T式中 -圓軸扭轉(zhuǎn)角的簡化計算公式=584 12314.68*200G d4 T-軸傳遞的額定轉(zhuǎn)鉅（N/mm） 8.1*108*14.54 -軸受轉(zhuǎn)鉅作用的長度（mm) =200=5842462936 G-材料的切變

2、模量(Mpa) 假設(shè)d=14.5 358061*108 對鋼 G=8.1*108 (Mpa) =0.00004017 軸的變形許用值合格扭轉(zhuǎn)變形許用值一般軸：=0.50 10/m F F = = A A * * S S F=F=力力 A=A=壓壓強強 S=S=面面積積例：DN100 = 7853.75 mm2PN16=16 kgf / cm2 =156.8 N / 100 mm2滿足此剛度要求的軸直徑可由下式求得=1.568 N / mm2d 4 T=7853.75 mm21.568 N=7853.75*1.568 N 138.51mm2d 412314.68=d 4177.829=12314

3、.68 N69.25=584=d3.65扭轉(zhuǎn)變形許用值一般軸：=0.50 10/m軸強度計算d 計計算算剖剖面面處處軸軸的的直直徑徑 mmmmT 軸軸傳傳遞遞的的額額定定轉(zhuǎn)轉(zhuǎn)鉅鉅 N.mmN.mm公式:d=17.2*(T/)1/3 軸軸的的許許用用轉(zhuǎn)轉(zhuǎn)應(yīng)應(yīng)力力MpaMpa軸直徑d(mm)材料 T100300500700100013001500170020002500300035004000450050003Cr1313.719.723.326.129.432.133.735.137.139.942.444.746.748.650.32004515.422.226.329.433.136.237

4、.939.541.745.047.850.352.654.756.61401Cr18Ni9Ti16.724.028.531.935.939.241.142.845.248.751.854.557.059.361.4110T:單位N.mT=9550*(P/n) P:單位Kw n: 單位r/minN/mm2軸帶鍵槽軸徑(mm)3030-100有一個鍵槽時的增大值,%75有二個鍵槽時的增大值,%1510材料 T100300500700100013001500170020002500300035004000450050003Cr1314.621.125.027.931.533.735.436.938.

5、941.944.546.949.051.052.82304516.523.728.131.534.838.039.841.543.847.250.252.855.257.459.51401Cr18Ni9Ti17.825.730.533.537.741.143.145.047.551.254.457.259.862.264.5110有二個鍵槽時的增大值,%材料 T100300500700100013001500170020002500300035004000450050003Cr1315.722.626.830.033.835.337.038.640.843.946.749.151.453.455.32304517.725.530.233.836.439.841.743.545.949.552.655.357.860