圆锥圆柱齿轮减速器说明书,大学课程设计论文
bsin =
m=55 0.22
=1.531
n
2.5 计算Z
Z
1
1
1.53
0.81Z cos 0.9758 0.99
b= arctan(tan cos t)
= arctan(0.224×0.937)=11.853
Z2cos b2 0.H=
cosa= 9787
.937 0.349
=2.45
tsinat0计算齿面接触应力 H
2KT2u 1
H=ZHZEZ Z
bd2u
2=2.45×189.8×0.81×0.99×2 1.6933 117527.5973.38155 71.7362 1
3.381
=503.36MPa<[ H]=545Mpa
主要参数为:mn=2.5mm ,z1=28, z2=93,β 12 29'24", d2=238.266mm, b=55mm。 4.校核齿根弯曲疲劳强度
2KT1
F=
bdmYFaYsaY Y ≤[ F] 1n
zz1
28v1=
cos3 =0.97583
=30.1353 zz2
93v2=
cos3
=0.9758
3=100.092 按zv1,zv2查图得:YFa1=2.61,YFa2=2.25 查图得:Ysa1=1.63,Ysa2=1.81
d1=71.736mm,