精确用孔的孔间距允许偏差
|
连接型式 |
Ⅰ |
Ⅱ |
Ⅲ |
Ⅳ |
Ⅴ |
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|
连接特性 |
螺栓 △L＝ ±SM |
螺钉 △L＝ ±0.5SM |
螺栓 △L＝ ±0.7SM |
螺钉 △L＝ ±0.35SM |
螺栓 △L＝ ±0.5SM |
螺钉 △L＝ ±0.25SM |
螺栓 △L＝ ±0.45SM |
螺钉 △L＝ ±0.225SM |
螺栓 △L＝ ±0.35SM |
螺钉 △L＝ ±0.175SM |
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|
螺栓和销钉直径 |
配合 |
最小间隙SM |
允 许 偏 差 ±△L/mm |
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|
2～3 |
|
0.008 |
0.008 |
|
0.006 |
|
|
|
|
|
|
|
|
3～6 |
0.010 |
0.010 |
|
0.007 |
|
0.005 |
|
|
|
|
|
|
|
6～10 |
0.013 |
0.013 |
|
0.009 |
0.005 |
0.006 |
|
0.006 |
|
0.005 |
|
|
|
10～18 |
0.016 |
0.016 |
|
0.011 |
0.006 |
0.008 |
|
0.007 |
|
0.006 |
|
|
|
2～3 |
|
0.012 |
0.012 |
0.006 |
0.008 |
|
0.006 |
|
0.005 |
|
|
|
|
3～6 |
0.017 |
0.017 |
0.009 |
0.012 |
0.006 |
0.008 |
|
0.007 |
|
0.006 |
|
|
|
6～10 |
0.023 |
0.023 |
0.012 |
0.016 |
0.008 |
0.011 |
0.006 |
0.010 |
0.005 |
0.008 |
|
|
|
10～18 |
0.030 |
0.030 |
0.015 |
0.021 |
0.010 |
0.015 |
0.008 |
0.013 |
0.006 |
0.011 |
0.005 |
|
|
2～3 |
|
0.018 |
0.018 |
0.009 |
0.013 |
0.006 |
0.009 |
0.005 |
0.008 |
|
0.006 |
|
|
3～6 |
0.025 |
0.025 |
0.013 |
0.018 |
0.009 |
0.013 |
0.006 |
0.011 |
0.005 |
0.009 |
|
|
|
6～10 |
0.035 |
0.035 |
0.018 |
0.025 |
0.012 |
0.018 |
0.009 |
0.016 |
0.008 |
0.012 |
0.006 |
|
|
10～18 |
0.045 |
0.045 |
0.023 |
0.032 |
0.016 |
0.023 |
0.011 |
0.020 |
0.010 |
0.016 |
0.008 |
|
|
2～3 |
|
0.007 |
0.007 |
|
0.005 |
|
|
|
|
|
|
|
|
3～6 |
0.011 |
0.011 |
0.006 |
0.008 |
|
0.006 |
|
0.005 |
|
|
|
|
|
6～10 |
0.015 |
0.015 |
0.008 |
0.011 |
0.006 |
0.008 |
|
0.007 |
|
0.005 |
|
|
|
10～18 |
0.020 |
0.020 |
0.010 |
0.014 |
0.007 |
0.010 |
0.005 |
0.009 |
|
0.007 |
|
|
|
2～3 |
|
0.017 |
0.017 |
0.009 |
0.012 |
0.006 |
0.009 |
|
0.007 |
|
0.006 |
|
|
3～6 |
0.025 |
0.025 |
0.013 |
0.018 |
0.009 |
0.013 |
0.006 |
0.011 |
0.005 |
0.009 |
|
|
|
6～10 |
0.035 |
0.035 |
0.018 |
0.025 |
0.012 |
0.018 |
0.009 |
0.016 |
0.008 |
0.012 |
0.006 |
|
|
10～18 |
0.045 |
0.045 |
0.023 |
0.032 |
0.016 |
0.023 |
0.011 |
0.020 |
0.010 |
0.0016 |
0.008 |
|
注：1．计算公式和偏差值是按零件完全互换条件下计算的。当大批生产或连续生产以及当单件或部分调整时，偏差可增大1.3倍（△L′=1.3△L）
2．连接型式按表“连接型式及特性”分类。