7侧隙
7.1本标准对齿轮传动侧隙只规定其最小法向侧隙jnmin.
7.2侧隙种类分为5种,按jnmin值从小到大的顺序,用字母h、g、f、e、d表示,h为零,如图1所示。具体数值见表4。
图1
7.3评定齿轮传动侧隙的指标是 和TS。具体数值分别见表5、表6。
8图样标注
8.1在齿轮工作图上,应标注齿轮的精度等级和侧隙种类。
8.2标注示例
8.2.1齿轮的三个公差组精度指标,采用相同的精度等级时,标注为:
例:齿轮的Ⅰ、Ⅱ、Ⅲ公差组精度等级同为7级,侧隙种类为g,标注为:
7g GB 10225-88
8.2.2齿轮的三个公差组精度指标,采用不同的精度等级时,标注为:
例:齿轮的Ⅰ公差组精度等级为7级,Ⅱ公差组精度等级为7级,Ⅲ公差组精度等级为6级,侧隙种类为f,标注为:
7-7-6f GB 10225-88
表2公差或极限偏差Fi′,FP,FPK,Fr,FiΣc″,Fvj,fi′,fPt,ff,fiΣc″
精度
等级 |
代号 |
中点模数
(mm)mm |
中点分度圆直径(dm)mm |
≤12 |
>12~20 |
>20~32 |
>32~50 |
>50~80 |
>80~125 |
>125~200 |
4 |
Fi′ |
0.1~0.5 |
11 |
12 |
13 |
14 |
15 |
17 |
19 |
>0.5~<1 |
12 |
13 |
14 |
15 |
16 |
18 |
20 |
FP |
0.1~<1 |
6 |
7 |
8 |
9 |
10 |
12 |
14 |
FPK |
0.1~<1 |
4 |
4 |
5 |
5 |
6 |
7 |
8 |
fi′ |
0.1~0.5 |
8 |
>0.5~<1 |
10 |
fPt |
0.1~0.5 |
3 |
>0.5~<1 |
4 |
ff |
0.1~0.5 |
5 |
>0.5~<1 |
6 |
5 |
Fi′ |
0.1~0.5 |
17 |
18 |
19 |
20 |
22 |
26 |
29 |
>0.5~<1 |
18 |
19 |
20 |
21 |
23 |
27 |
30 |
FP |
0.1~<1 |
10 |
11 |
12 |
14 |
16 |
19 |
22 |
FPK |
0.1~<1 |
6 |
6 |
7 |
8 |
9 |
11 |
13 |
Fr |
0.1~<1 |
8 |
9 |
10 |
11 |
13 |
15 |
18 |
FiΣc″ |
0.1~<1 |
16 |
18 |
20 |
22 |
25 |
29 |
35 |
fi′ |
0.1~0.5 |
12 |
>0.5~<1 |
14 |
fPt |
0.1~0.5 |
5 |
>0.5~<1 |
6 |
ff |
0.1~0.5 |
7 |
>0.5~<1 |
8 |
fiΣc″ |
0.1~0.5 |
9 |
>0.5~<1 |
11 |
6 |
Fi′ |
0.1~0.5 |
26 |
28 |
30 |
33 |
36 |
40 |
45 |
>0.5~<1 |
27 |
29 |
31 |
34 |
37 |
41 |
46 |
FP |
0.1~<1 |
16 |
18 |
20 |
23 |
26 |
30 |
36 |
FPK |
0.1~<1 |
9 |
10 |
11 |
13 |
15 |
17 |
20 |
Fr |
0.1~<1 |
13 |
14 |
16 |
18 |
21 |
24 |
28 |
FiΣc″ |
0.1~<1 |
25 |
27 |
31 |
35 |
41 |
47 |
55 |
fi′ |
0.1~0.5 |
18 |
>0.5~<1 |
20 |
fPt |
0.1~0.5 |
8 |
>0.5~<1 |
9 |
ff |
0.1~0.5 |
10 |
>0.5~<1 |
11 |
fiΣc″ |
0.1~0.5 |
14 |
>0.5~<1 |
18 |
7 |
Fi′ |
0.1~0.5 |
36 |
38 |
41 |
45 |
49 |
55 |
62 |
>0.5~<1 |
38 |
40 |
43 |
47 |
51 |
57 |
64 |
FP |
0.1~<1 |
23 |
25 |
28 |
32 |
36 |
42 |
50 |
Fr |
0.1~<1 |
18 |
21 |
23 |
26 |
30 |
34 |
40 |
FiΣc″ |
0.1~<1 |
35 |
40 |
45 |
51 |
59 |
67 |
78 |
Fvj |
0.1~<1 |
25 |
29 |
31 |
35 |
40 |
46 |
54 |
fi′ |
0.1~0.5 |
24 |
>0.5~<1 |
28 |
fPt |
0.1~0.5 |
11 |
>0.5~<1 |
13 |
ff |
0.1~0.5 |
13 |
>0.5~<1 |
15 |
fiΣc″ |
0.1~0.5 |
19 |
>0.5~<1 |
25 |
8 |
Fi′ |
0.1~0.5 |
49 |
52 |
56 |
61 |
67 |
75 |
85 |
>0.5~<1 |
52 |
55 |
59 |
64 |
70 |
78 |
88 |
FP |
0.1~<1 |
32 |
35 |
39 |
44 |
50 |
58 |
68 |
Fr |
0.1~<1 |
24 |
26 |
29 |
33 |
38 |
43 |
50 |
FiΣc″ |
0.1~<1 |
47 |
51 |
57 |
65 |
75 |
85 |
100 |
Fvj |
0.1~<1 |
33 |
36 |
39 |
44 |
50 |
58 |
68 |
fi′ |
0.1~0.5 |
34 |
>0.5~<1 |
39 |
fPt |
0.1~0.5 |
16 |
>0.5~<1 |
18 |
fiΣc″ |
0.1~0.5 |
27 |
>0.5~<1 |
35 |
9 |
Fr |
0.1~<1 |
30 |
33 |
37 |
42 |
48 |
55 |
63 |
FiΣc″ |
0.1~<1 |
59 |
65 |
73 |
82 |
95 |
110 |
125 |
Fvj |
0.1~<1 |
41 |
45 |
50 |
57 |
65 |
75 |
85 |
fPt |
0.1~0.5 |
20 |
>0.5~<1 |
23 |
fiΣc″ |
0.1~0.5 |
34 |
>0.5~<1 |
44 |
10 |
FiΣc″ |
0.1~<1 |
74 |
82 |
92 |
105 |
120 |
135 |
155 |
Fvj |
0.1~<1 |
52 |
57 |
64 |
72 |
82 |
92 |
105 |
fPt |
0.1~0.5 |
25 |
>0.5~<1 |
29 |
fiΣc″ |
0.1~0.5 |
43 |
>0.5~<1 |
55 |
11 |
Fr |
0.1~<1 |
48 |
53 |
59 |
66 |
75 |
85 |
100 |
FiΣc″ |
0.1~<1 |
95 |
105 |
115 |
130 |
145 |
165 |
190 |
Fvj |
0.1~<1 |
65 |
72 |
80 |
90 |
100 |
115 |
135 |
fPt |
0.1~0.5 |
31 |
>0.5~<1 |
36 |
fiΣc″ |
0.1~0.5 |
54 |
>0.5~<1 |
69 |
12 |
Fr |
0.1~<1 |
60 |
66 |
74 |
83 |
92 |
105 |
125 |
FiΣc″ |
0.1~<1 |
120 |
130 |
145 |
165 |
185 |
210 |
240 |
Fvj |
0.1~<1 |
82 |
90 |
100 |
115 |
130 |
145 |
165 |
fPt |
0.1~0.5 |
39 |
>0.5~<1 |
45 |
fiΣc″ |
0.1~0.5 |
68 |
>0.5~<1 |
86 |
|
|
|
|
|
|
|
|
|
|
|
注:①表中FPK数值系数按k=Z/8给出。如k≠Z/8时,应按附录B中的FPK关系式进行计算。
②表中fiΣc″与Fvj应按大、小齿轮中点分度圆直径之各的一半选取。
表3齿向公差Fβ μm
表4最小法向侧隙jnmin μm
中点锥距(Rm)
mm |
小轮分锥角
(δ1)(°) |
侧隙种类 |
h |
g |
f |
e |
d |
≤12 |
≤15 |
0 |
4 |
6 |
10 |
14 |
>15~25 |
0 |
5 |
8 |
12 |
18 |
>25 |
0 |
6 |
9 |
15 |
22 |
>12~20 |
≤15 |
0 |
5 |
8 |
12 |
18 |
>15~25 |
0 |
6 |
9 |
15 |
22 |
>25 |
0 |
8 |
11 |
18 |
27 |
>20~32 |
≤15 |
0 |
6 |
9 |
15 |
22 |
>15~25 |
0 |
8 |
11 |
18 |
27 |
>25 |
0 |
9 |
13 |
21 |
33 |
>32~50 |
≤15 |
0 |
8 |
11 |
18 |
27 |
>15~25 |
0 |
9 |
13 |
21 |
33 |
>25 |
0 |
11 |
16 |
25 |
39 |
>50~80 |
≤15 |
0 |
9 |
13 |
21 |
33 |
>15~25 |
0 |
11 |
16 |
25 |
39 |
>25 |
0 |
13 |
19 |
30 |
46 |
>80~125 |
≤15 |
0 |
11 |
16 |
25 |
39 |
>15~25 |
0 |
13 |
19 |
30 |
46 |
>25 |
0 |
15 |
22 |
35 |
54 |
注:正交齿轮副按中点锥距Rm查表。非正交齿轮副按下式算出的Rm′查表:
式中:δ2、δ1——大、小轮分锥角。
表5中点分度圆齿厚上偏差
μm
侧隙
种类 |
Ⅱ公差组
精度等级 |
中点分度圆直径(dm)mm |
≤12 |
>12~20 |
>20~32 |
>32~50 |
>50~80 |
>80~125 |
>125~200 |
h |
4~6 |
8 |
8 |
9 |
9 |
10 |
11 |
14 |
7 |
12 |
12 |
13 |
14 |
15 |
16 |
20 |
g |
4~6 |
12 |
13 |
14 |
15 |
17 |
20 |
26 |
7 |
16 |
17 |
18 |
20 |
22 |
25 |
30 |
8 |
20 |
22 |
24 |
26 |
28 |
30 |
38 |
f |
4~6 |
17 |
18 |
21 |
24 |
28 |
32 |
42 |
7 |
20 |
22 |
25 |
28 |
32 |
36 |
44 |
8 |
26 |
28 |
30 |
34 |
38 |
42 |
52 |
9 |
36 |
38 |
42 |
45 |
48 |
52 |
62 |
10 |
52 |
54 |
56 |
58 |
60 |
65 |
80 |
e |
4~6 |
28 |
30 |
34 |
40 |
46 |
54 |
65 |
7 |
32 |
34 |
38 |
44 |
50 |
60 |
70 |
8 |
34 |
38 |
42 |
46 |
52 |
62 |
75 |
9 |
45 |
48 |
52 |
56 |
62 |
70 |
80 |
10 |
60 |
62 |
65 |
68 |
75 |
80 |
95 |
11 |
65 |
68 |
70 |
75 |
80 |
85 |
105 |
12 |
70 |
72 |
75 |
80 |
85 |
90 |
115 |
d |
4~6 |
35 |
38 |
40 |
45 |
50 |
55 |
70 |
7 |
42 |
45 |
48 |
52 |
55 |
60 |
80 |
8 |
45 |
48 |
50 |
55 |
60 |
65 |
85 |
9 |
55 |
60 |
65 |
70 |
75 |
80 |
90 |
10 |
65 |
68 |
70 |
75 |
80 |
85 |
100 |
11 |
70 |
75 |
80 |
85 |
90 |
95 |
110 |
12 |
75 |
80 |
85 |
90 |
95 |
100 |
120 |