| 齿轮计算 | ||||
| m=0.4 | α=20° | ha*=1 | C*=0.25 | |
| 小齿轮Z1=10 | 大齿轮Z2=28 | 扇形齿轮Z3=50 | ||
| d1=mz1=0.4x10=4 | d2=mz2=0.4x28=11.2 | d3=mz3=0.4x50=20 | ||
| ha1=ha*m=1x0.4=0.4 | ha2=ha*m=1x0.4=0.4 | ha3=ha*m=1x0.4=0.4 | ||
| hf1=(ha*+c*)m=(1+0.25)x0.4=0.5 | hf2=(ha*+c*)m=(1+0.25)x0.4=0.5 | hf3=(ha*+c*)m=(1+0.25)x0.4=0.5 | ||
| da1=d1+2ha1=4+2x0.4=4.8 | da2=d2+2ha2=11.2+2x0.4=12 | da3=d3+2ha3=20+2x0.4=20.8 | ||
| df1=d1-2hf1=4-2x0.5=3 | df2=d1-2hf2=11.2-2x0.5=10.2 | df3=d3-2hf3=20-2x0.5=19 | ||
| db1=d1cosα=4x0.93969262=3.758770483 | db2=d2cosα=11.2x0.93969262=10.52455735 | db3=d3cosα=20x0.93969262=18.79385242 | ||
| s=πm/2=3.14x.4/2=0.628 | s=πm/2=3.14x0.3=0.628 | s=πm/2=3.14x0.4=0.628 | ||
| αa=arcos(rb/ra)=36.34618427=38°28′ | αa=arcos(rb/ra)=27.44079742=28°43′ | αa=arcos(rb/ra)=24.86658253=25°22′ | ||
| sa=sra/r-2ra(invαa-invα)=0.2341824 | sa=sra/r-2ra(invαa-1nvα)=0.291499542 | sa=sra/r-2ra(invαa-1nvα)=0.31155488 | ||
| sb=srb/r+2rbinvα=0.702168395 | sb=srb/r+2rb1nvα=0.746984967 | sb=srb/r+2rb1nvα=0.870230542 | ||
| θa=sa/ra=5.593528662° | θa=sa/ra=2.785027471° | θa=sa/ra=1.71729172° | ||
| θ=s/r=18° | θ=s/r=6.428571425° | θ=s/r=3.6° | ||
| θb=sb/rb=21.41747766° | θb=sb/rb=8.137310266° | θb=sb/rb=5.308738851° | ||
| 中心距z1对z2 a1-2=(d1+d2)/2=(4+11.2)/2=7.6 | 中心距z1对z3 a1-3=(d1+d3)/2=(4+20)/2=12 | |||
| 速比i=z2/z1=28/10=2.8 | 速比i=z3/z1=50/10=5 | |||
| 阀门转速为4转/分钟，扭矩0.6N.m 需要驱动功率为N=Mω=2πnM/60=6.28x4x0.6/60=0.25瓦。减速器总速比i总=2.8x2.8x2.8x2.8x2.8x2.8x5=2409.45 (共8级减速,每级效率为0.94)，效率η=0.6 电机功率为N电=N/η=0.25/0.6=0.42瓦。电机转速n电=阀门转速x减速器总速比=4x2409.45=9638转/分钟。 电机选型：型号FA130RA-18100 n=9600rpm N=0.82w 广东揭阳顺兴微电机厂 | ||||
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