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1、●標(biāo)準(zhǔn)鏈輪的尺寸P：節(jié)距，R：滾子直徑，N：鏈輪的齒數(shù)◎節(jié)距直徑PCD=P/(sin180°/N)◎外徑OD=P/(0.6+cot180°/N)下表給出一種標(biāo)準(zhǔn)節(jié)距鏈輪的節(jié)距直徑和外徑(節(jié)距1)。例：為了得到120號(hào)NT(齒數(shù))25鏈輪的節(jié)徑和外徑從表中可得到節(jié)距為7.9789。因此PCD=38.1×7.9789=303.98847，或者取小數(shù)點(diǎn)后1位并四舍五入303.99。外徑可從表中查得為8.516。因此OD=38.10×8.516=324.4596，或取小數(shù)點(diǎn)后1位并四舍五入324。齒根圓直徑BD=PCD—R
2、最大齒根距離(卡鉗測(cè)量)：CD對(duì)于奇數(shù)齒：CD=PCDcos90/N—R對(duì)于偶數(shù)齒：CD=BD●節(jié)距直徑系數(shù)和外徑系數(shù)清單(mm)齒數(shù)系數(shù)1/[sin(180/N)]系數(shù)0.6+cot(180/N)齒數(shù)系數(shù)1/[sin(180/N)]系數(shù)016+cot(180/N)齒數(shù)系數(shù)1/[sin(180/N)]系數(shù)0.6+cot(180/N)111213141516171819202l22232425262728293031323334353637383940414243444546474849503.54953.86374
3、.17864.49404.80975.12585.44225.75886.07556.39256.70957.02677.34397.66137.97878.29628.61388.93149.24919.56689.884510.202310.520110.838011.155811.473711.791612.109612.427512.745513.063513.381513.699514.017514.335614.653614.971715.289815.607915.92604.0064.3324.65
4、74.9815.3055.62759506.271659369147.2357.555787681968.5168.8369.1569.4759.79510.11410.43410.75311.07211.39211.71112.03012.34912.66812.98713.30613.62513.94414.36314.5821490115.21915.53815.85716.17616.49552525354555657585960616263646566676869707172737475767778798
5、08182838485868788899016.244116.562216.880317.198417.516617.834718.152918.471018.789219.107319.425519.743720.061820.380020.698221.016421.234921.652821.971022.289222.607422.925623.243823.562023.880224.198424.516724.834925.153125.471325.789626.107826.426126.74432
6、7.062527.380727.699028.017228.335528.653716.81317.13217.45117.76918.08818.40718.72519.04419.36319.68120.00020.31820.63720.95521.27421.59321.91122.23022.54822.86723.18523.50423.82224.14124.4592477825.09625.41525.73326.05226.37026.68927.00727.32627.64427.96228.2
7、8128.59928.91829.23691929394959697989910010110210310410510610710810911011111211311411511611711811912028.972029.290229.608529.926730.244930.563230.881531.199731.518031.836232.154532.472732.791033.109333.427533.745834.064134.382334.700635.018935.337135.655435.97
8、3736.291936.610236.928537.246737.565037.883338.201629.29029.87330.19230.51030.82831.14731.46531.78432.10232.42132.73933.05733.37633.69434.01334.33134.69434.96835.28635.60535.92336.
