滚子链传动设计计算实例
已知p=10KW，小链轮的转速n1=720r/min，传动比i=2.8，载荷平稳，两班工作制，两链轮中心距a=500~600mm范围，中心距可调，两轮中心连线与水平面夹角近于35o，小链轮孔径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549108.gif。计算：（1）小链轮齿数z1 z1=29-2i=29-2*2.8=23.4 取整数z1=23i1~22~33~44~55~66
z131~2727~2525~2323~2121~1717~15
优先选用齿数：17，19，21，23，25，38，57，76，95，114
z1、z2取奇数，则链条节数http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549642.gif为偶数时，可使链条和链轮轮齿磨损均匀。在高速或有冲击载荷的情况下，小链轮齿最小应有25齿。（2）大链轮齿数z2 Z2=iz1=2.8*23=64.4 取整z2=65（3）实际传动比i=http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549241.gif（4）设计功率http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549863.gif http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549502.gif工况系数，查表5.4-3http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549393.gif，http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549783.gif（5）单排链条传递功率http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549442.gif，查表5.4-4和5.4-5，齿数系数http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549215.gif，排数系数http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549834.gif=1http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549790.gif=8.13kw（6）链节距p根据http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549044.gif，n1=720r/min，查图5.4-1功率曲线http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549465.gif和n1确定的点，应在所选型号链的功率曲线下方附近（不超过直线）。结果为10A，节距p=15.875mm，（7）验算小链轮轴直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549814.gif查5.4-7链轮中心孔最大许用直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549376.gif（8）初定中心距http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549179.gifhttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549767.gif为优，无张紧轮时取http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549212.gif
i<4≥4
http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549799.gif0.2z1（i+1）p0.33z1(i-1)p
http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549778.gif http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549725.gif（9）确定链条节数http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549184.gifhttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549262.gif=115.3取http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549135.gif（10）链条长度http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549696.gif（11）计算（理论）中心距http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549949.gif当http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549618.gif时，http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549523.gif 当http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549502.gif时，http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549821.gif根据http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549483.gif，查表5.4-9，若有必要可使用插值。http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549113.gifhttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549471.gif(12)实际中心距ahttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549137.gif，一般http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549511.gifhttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549590.gif(13)链速http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549862.gif(14)有效圆周率http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549888.gif(15)作用在轴上的力F 水平或倾斜的传动http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549723.gif 接近垂直的传动http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549846.gif http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549699.gif工况系数，见表5.4-3 F=1.2×1×2283.1=2739.7N(16)润滑方式。(17)链条标记：10A-1-116 GB 1243-1997 1表示排数，116表示节数(18)链轮的几何尺寸 滚子直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549761.gifp=15.875mm 1）分度圆直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549107.gif 小链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549004.gif，大链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549669.gif2）齿顶圆http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549635.gif http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549772.gif，http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549038.gif 对于三圆弧-直线齿形http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549172.gif小链轮齿顶圆http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549383.gif=124.072mm，取整124mm大链轮齿顶圆http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549103.gif=336.773mm，取整337mm3）齿根圆直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549729.gif小链轮齿根圆直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549729.gif= 116.585-10.16=106.425mm，取106.43mm大链轮齿根圆直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549729.gif= 328.584-10.16=318.424mm，取318.42 mm4)节距多变形以上的齿高http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549899.gif=0.27×15.875=4.286mm（对于三圆弧-直线齿形）5)最大齿根距http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549036.gif奇数齿http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549557.gif偶数齿http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549762.gif小链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549956.gif=106.153mm大链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549797.gif=318.328mm6)轴凸缘直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549100.gifhttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549896.gif小链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549126.gif=99.045mm大链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549870.gif=311.746mm7)轮毂厚度h http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549675.gif ，http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549814.gif——孔的直径
d<5050~100100~150>150
K3.24.86.49.5
小链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549739.gif=14.232，取整14mm 大链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549620.gif=22.7858，取整数22mm8)轮毂长度l l=3.3h http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549197.gif小链轮l=3.3×14=46.2mm，取整46mm大链轮l=3.3×22=72.6mm，取整72mm9)轮毂直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549796.gif，http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549411.gif小链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549357.gif=68mm大链轮http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549040.gif=104mm10)齿宽http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549257.gif单排http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549220.gif单排http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549104.gif=0.95×9.4=8.93mm11)齿侧半径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549023.gif http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549247.gif12)倒角宽http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549377.gif http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549939.gif，取2.1mm13)倒角深h=0.5p=0.5×15.875=7.9375mm14)齿侧凸缘圆角半径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549251.gif=0.635mm(19)链轮公差1)齿根圆直径和量柱测量距极限偏差
项目极限偏差
孔径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549814.gifH8
齿顶圆http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549635.gifh11
齿根圆直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549045.gif极限偏差h11
齿宽http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549257.gifh14
量柱测量距http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549732.gif极限偏差h11
项目符号计算公式
量柱测量距偶数齿http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549732.gifhttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549090.gif
奇数齿http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549646.gif
小链轮齿根圆直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549729.gif= 116.585-10.16=106.425mm，取106.43mm大链轮齿根圆直径http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549729.gif= 328.584-10.16=318.424mm，取318.42 mmhttp://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549941.gif，http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549667.gif小链轮量柱测量距http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549051.gif大链轮量柱测量距http://www.ttcad.com/upFiles/infoImg/coll/20130427/OT20130427125549410.gif 2)径向圆跳动小链轮径向圆跳动=min{0.0008df+0.008,0.76}=0.0008×106.43+0.008=0.093144端面跳动=min{0.0009df+0.008,1.14}
这过程，机械设计教材里面也有吧
本科课程设计里面，也会用到吧
…… LZ功底不错。学习了
鼓励，进一步从功能要求再比较各种链条吧 厉害，受教了， 我查到2.2对应的k为0.24552，你k=0.24559，是插值法算的，能写下具体过程吗？我不知道怎么用插值法算这里。所以看不明白，谢谢你了
学习了，支持一下
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