絲桿電機(jī)選型計(jì)算

,,,,,絲杠水平運(yùn)動(dòng)選型計(jì)算表格,,,,,,,,

,機(jī)械結(jié)構(gòu)參數(shù)：,,,,,,,,,,,,

,,速度：,,Vl=,0.48,m/min,*,其他常數(shù),,,,,

,,滑動(dòng)部分質(zhì)量,,M=,40,kg,*,,G=,9.8,m/s,,

,,絲杠長(zhǎng)度,,LB=,0.6,m,*,,pi=,3.1416,,,

,,絲杠直徑,,DB=,0.025,m,*,絲杠密度,ρ=,7900,kg/m3,,

,,絲杠導(dǎo)程,,PB=,0.01,m,*,,,,,,

,,連軸器質(zhì)量,,MC,0.05,kg,*,,,,,,

,,連軸器直徑,,DC,0.03,m,*,,,,,,

,,摩擦系數(shù),,μ=,0.1,,*,,,,,,

,,移動(dòng)距離,,L=,0.3,m,,,,,,,

,,機(jī)械效率,,η=,0.9,,*,,,,,,

,,定位時(shí)間,,t=,30,s,*,,,,,,

,,加減速時(shí)間比,,A=,2%,,*,,,,,,

,,外力,,FA=,0,N,,,,,,,

,,移動(dòng)方向與水平軸夾角,,a=,0,°,,,,,,,

,,,,,,,,,,,,,,

,1)速度曲線,,,,,,,,,,,,

,,加速時(shí)間,,t0=,t*A,,,,,,,,

,,,,=,0.6,s,,,,,,,

,2)電機(jī)轉(zhuǎn)速,,,,,,,,,,,,

,,,,NM=,Vl/PB,,,,,,,,

,,,,=,48,rpm,,,,,,,

,3)負(fù)荷轉(zhuǎn)矩計(jì)算,,,,,,,,,,,,

,,,軸向負(fù)載F=,,FA+,,,,,,,,

,,,,=,39.2,N,,,,,,,

,,,,,,,,,,,,,,

,,,負(fù)載轉(zhuǎn)矩TL=,,,,,,,,,,

,,,,=,0.069320658,Nm,,,,,,,

,4)克服慣量的加速轉(zhuǎn)矩計(jì)算（也稱做：?jiǎn)?dòng)轉(zhuǎn)矩）,,,,,,,,,,,,

,,直線運(yùn)動(dòng)平臺(tái)與負(fù)載慣量,,JL=,,,,,,,,,

,,,,=,0.000101321,kgm2,,,,,,,

,,滾珠絲杠慣量,,JB=,,,,,,,,,

,,,,=,0.000181777,kgm2,,,,,,,

,,,,,,,,,,,,,,

,,連軸器慣量,,JC=,,,,,,,,,

,,,,=,0.000005625,kgm2,,,,,,,

,,,,,,,,,,,,,,

,,總負(fù)荷慣量,,JL=,JL+JB+JC,,,,,,,,

,,,,=,0.000288723,kgm2,,,,,,,

,,,,,,,,,,,,,,

,,啟動(dòng)轉(zhuǎn)矩,,TS=,,,,安全系數(shù),S=,2,,,

,,,,=,0.011634165,Nm,,,,,,,

,,,,,,,,,,,,,,

,5)必須轉(zhuǎn)矩,,,,,,,,,,,,

,,必須轉(zhuǎn)矩,,TM=,(TL+TS)*S,,,電機(jī)慣量,JM=,0.0011,kgm2,,12

,,,,=,0.161909644,Nm,,,,,,,

,,,,,,,,,,,,,,

,6)電機(jī)選擇,,,,,,,,,,,,

,,根據(jù)計(jì)算，初步確定電機(jī)型號(hào)，然后輸入轉(zhuǎn)子慣量，確認(rèn)TM,,,,,,,,,,,

,7)負(fù)荷與電機(jī)慣量比,,,,,,,,,,,,

,,慣量比,,I1=,0.262475326,,,,,,,,

,8)負(fù)荷與減速機(jī)慣量比,,,,,,,,,,,,

,當(dāng)負(fù)荷與電機(jī)慣量比>5時(shí)，考慮