|
极限偏差和公差与蜗轮几何参数的关系式 |
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|
精度 等级 |
Fp(或Fpk) |
Fr |
F"i |
±fpt |
f "i |
ff2 |
±fΣ |
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|
Fp=
|
Fr=Am+
B=0.25A |
F"i=Am+
B=0.25A |
fpt=Am+
B=0.25A |
f "i=Am+
B=0.25A |
ff2=Am+
B=0.0125A |
fΣ=
|
||||||||
|
B |
C |
A |
C |
A |
C |
A |
C |
A |
C |
A |
C |
B |
C |
|
|
1 |
0.25 |
0.63 |
0.224 |
2.8 |
— |
— |
0.063 |
0.8 |
— |
— |
0.063 |
2 |
— |
— |
|
2 |
0.40 |
1 |
0.355 |
4.5 |
— |
— |
0.10 |
1.25 |
— |
— |
0.10 |
2.5 |
— |
— |
|
3 |
0.63 |
1.6 |
0.56 |
7.1 |
— |
— |
0.16 |
2 |
— |
— |
0.16 |
3.15 |
0.50 |
2.5 |
|
4 |
1 |
2.5 |
0.90 |
11.2 |
— |
— |
0.25 |
3.15 |
— |
— |
0.25 |
4 |
0.63 |
3.2 |
|
5 |
1.6 |
4 |
1.40 |
18 |
— |
— |
0.40 |
5 |
— |
— |
0.40 |
5 |
0.8 |
4 |
|
6 |
2.5 |
6.3 |
2.24 |
28 |
— |
— |
0.63 |
8 |
— |
— |
0.63 |
6.3 |
1 |
5 |
|
7 |
3.55 |
9 |
3.15 |
40 |
4.5 |
56 |
0.90 |
11.2 |
1.25 |
16 |
1 |
8 |
1.25 |
6.3 |
|
8 |
5 |
12.5 |
4 |
50 |
5.6 |
71 |
1.25 |
16 |
1.8 |
22.4 |
1.6 |
10 |
1.8 |
8 |
|
9 |
7.1 |
18 |
5 |
63 |
7.1 |
90 |
1.8 |
22.4 |
2.24 |
28 |
2.5 |
16 |
2.5 |
11.2 |
|
10 |
10 |
25 |
6.3 |
80 |
9.0 |
112 |
2.5 |
31.5 |
2.8 |
35.5 |
4 |
25 |
3.55 |
16 |
|
11 |
14 |
35.5 |
8 |
100 |
11.2 |
140 |
3.55 |
45 |
3.55 |
45 |
6.3 |
40 |
5 |
22.4 |
|
12 |
20 |
50 |
10 |
125 |
14.0 |
180 |
5 |
63 |
4.5 |
56 |
10 |
63 |
7.1 |
31.5 |
|
注:1.m—模数,mm;d2—蜗轮分度圆直径,mm;L—蜗轮分度圆弧长,mm;b2—蜗轮齿宽,mm。 2.d2≤400mm的Fr、F"i公差按表中所列关系式再乘以0.8确定。 |
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