精确用孔的孔间距允许偏差 连接型式 | Ⅰ | Ⅱ | Ⅲ | Ⅳ | Ⅴ | 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 | 螺栓和销钉直径 | 配合 | 最小间隙SM | 允 许 偏 差 ±△L/mm | 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。 |