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极限偏差及公差与齿轮几何参数的关系式 |
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精 度 等 级 |
Fp |
Fr |
fpt |
fc |
f 'zzc |
fa |
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0.84(Amn +Bd+C) B=0.0125A |
AmnB+zC |
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B |
C |
A |
C |
A |
C |
A |
C |
A |
C |
A |
B |
C |
A |
C |
|
|
4 |
1.25 |
2.5 |
0.9 |
11.2 |
0.4 |
4.8 |
0.25 |
3.15 |
0.21 |
3.4 |
2.5 |
0.315 |
0.115 |
0.94 |
4.7 |
|
5 |
2 |
4 |
1.4 |
18 |
0.63 |
7.5 |
0.4 |
5 |
0.34 |
4.2 |
3.46 |
0.349 |
0.123 |
1.2 |
6 |
|
6 |
3.15 |
6 |
2.24 |
28 |
1 |
12 |
0.63 |
8 |
0.53 |
5.3 |
5.15 |
0.344 |
0.126 |
1.5 |
7.5 |
|
7 |
4.45 |
9 |
3.15 |
40 |
1.4 |
17 |
0.9 |
11.2 |
0.84 |
6.7 |
7.69 |
0.348 |
0.125 |
1.87 |
9.45 |
|
8 |
6.3 |
12.5 |
4 |
50 |
1.75 |
21 |
1.25 |
16 |
1.34 |
8.4 |
9.27 |
0.185 |
0.072 |
3 |
15 |
|
9 |
9 |
18 |
5 |
63 |
2.2 |
26.5 |
1.8 |
22.4 |
2.1 |
13.4 |
— |
— |
— |
4.75 |
24 |
|
10 |
12.5 |
25 |
6.3 |
80 |
2.75 |
33 |
2.5 |
31.5 |
3.35 |
21 |
— |
— |
— |
7.5 |
37.5 |
|
11 |
17.5 |
35.5 |
8 |
100 |
3.44 |
41.5 |
3.55 |
45 |
5.3 |
34 |
— |
— |
— |
12 |
60 |
|
12 |
25 |
50 |
10 |
125 |
4.3 |
51.5 |
5 |
63 |
8.4 |
53 |
— |
— |
— |
19 |
94.5 |
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Fvj=1.36Fr f 'zk=f 'zkc=(K-0.6+0.13)Fr(按高1级的Fr值计算);
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注:1.符号含义:d—中点分度圆直径;mn—中点法向模数;z—齿数;L—中点分度圆弧长;R—中点锥距;δ—分锥角;K—齿轮在一转(齿轮副在大轮一转)内的周期数(适于f 'zk、f 'zkc)。 2.Fr值,取表中关系式1和关系式2计算所得的较小值。 |
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