2025年09月07日 09:24:54 来源：深圳市金永安实业有限公司 >> 进入该公司展台 阅读量：284
安装钢丝螺套用螺纹孔的制备主要包括钢丝螺套钻孔和攻丝两大过程。这两步的相关使用标准和*终实施效果，决定了*后安装钢丝螺套的精度和装配效果。
1、攻丝前底孔加工
攻螺纹前的底孔直径应能使攻螺纹后的螺纹内径符合安装钢丝螺套用的螺纹内径的规定。
选择钻头直径时应考虑不同材料钻孔及攻丝时可能产生的差异。可查询相关钢丝螺套安装底孔尺寸表，也可以按如下公式
D= d+（0.25～0.3）P
D——钻头直径
d——螺纹公称直径
P——螺距
对于孔深，需要考虑到通孔钻孔和盲孔钻孔两种情况，同时还要考虑应保证钢丝螺套安装至螺纹部分并低于端面。
2、攻丝
根据机体材料、螺孔精度加工方法等选用不同种类的丝锥以保证精度。
攻丝深度应使螺纹的长度不小于钢丝螺套装配状态长度。
DIN8140规定了米制钢丝螺套钻孔和攻丝的相关技术参数（包括粗牙螺纹和细牙螺纹），对钢丝螺套钻孔和攻丝的*小钻孔深度和攻丝深度规范如下表：
| 公制钢丝螺套钻孔和攻丝技术参数（依据 DIN 8140） | |||||||||||||||
| 公制螺纹 | 1.0D | 1.5D | 2.0D | 2.5D | 3.0D | ||||||||||
| L | *小 钻孔深度 | 攻丝 深度 | L | *小 钻孔深度 | 攻丝 深度 | L | *小 钻孔深度 | 攻丝 深度 | L | *小 钻孔深度 | 攻丝 深度 | L | *小 钻孔深度 | 攻丝 深度 | |
| M2×0.4 | 2.00 | 3.80 | 3.40 | 3.00 | 4.80 | 4.40 | 4.00 | 5.80 | 5.40 | 5.00 | 6.80 | 6.40 | 6.00 | 7.80 | 7.40 |
| M2.5×0.45 | 2.50 | 4.52 | 4.07 | 3.75 | 5.78 | 5.33 | 5.00 | 7.03 | 6.58 | 6.25 | 8.28 | 7.83 | 7.50 | 9.53 | 9.08 |
| M3×0.5 | 3.00 | 5.25 | 4.75 | 4.50 | 6.75 | 6.25 | 6.00 | 8.25 | 7.75 | 7.50 | 9.75 | 9.25 | 9.00 | 11.25 | 10.75 |
| M3.5×0.6 | 3.50 | 6.20 | 5.60 | 5.25 | 7.95 | 7.35 | 7.00 | 9.70 | 9.10 | 8.75 | 11.45 | 10.85 | 10.50 | 13.20 | 12.60 |
| M4×0.7 | 4.00 | 7.15 | 6.45 | 6.00 | 9.15 | 8.45 | 8.00 | 11.15 | 10.45 | 10.00 | 13.15 | 12.45 | 12.00 | 15.15 | 14.45 |
| M5×0.8 | 5.00 | 8.60 | 7.80 | 7.50 | 11.10 | 10.30 | 10.00 | 13.60 | 12.80 | 12.50 | 16.10 | 15.30 | 15.00 | 18.60 | 17.80 |
| M6×1.0 | 6.00 | 10.50 | 9.50 | 9.00 | 13.50 | 12.50 | 12.00 | 16.50 | 15.50 | 15.00 | 19.50 | 18.50 | 18.00 | 22.50 | 21.50 |
| M7×1.0 | 7.00 | 11.50 | 10.50 | 10.50 | 15.00 | 14.00 | 14.00 | 18.50 | 17.50 | 17.50 | 22.00 | 21.00 | 21.00 | 25.50 | 24.50 |
| M8×1.0 | 8.00 | 12.50 | 11.50 | 12.00 | 16.50 | 15.50 | 16.00 | 20.50 | 19.50 | 20.00 | 24.50 | 23.50 | 24.00 | 28.50 | 27.50 |
| M8×1.25 | 8.00 | 13.63 | 12.38 | 12.00 | 17.63 | 16.38 | 16.00 | 21.63 | 20.38 | 20.00 | 25.63 | 24.38 | 24.00 | 29.63 | 28.38 |
| M9×1.0 | 9.00 | 13.50 | 12.50 | 13.50 | 18.00 | 17.00 | 18.00 | 22.50 | 21.50 | 22.50 | 27.00 | 26.00 | 27.00 | 31.50 | 30.50 |
| M9×1.25 | 9.00 | 14.63 | 13.38 | 13.50 | 19.13 | 17.88 | 18.00 | 23.63 | 22.38 | 22.50 | 28.13 | 26.88 | 27.00 | 32.63 | 31.38 |
| M10×1.0 | 10.00 | 14.50 | 13.50 | 15.00 | 19.50 | 18.50 | 20.00 | 24.50 | 23.50 | 25.00 | 29.50 | 28.50 | 30.00 | 34.50 | 33.50 |
| M10×1.25 | 10.00 | 15.63 | 14.38 | 15.00 | 20.63 | 19.38 | 20.00 | 25.63 | 24.38 | 25.00 | 30.63 | 29.38 | 30.00 | 35.63 | 34.38 |
| M10×1.5 | 10.00 | 16.75 | 15.25 | 15.00 | 21.75 | 20.25 | 20.00 | 26.75 | 25.25 | 25.00 | 31.75 | 30.25 | 30.00 | 36.75 | 35.25 |
| M11×1.5 | 11.00 | 17.75 | 16.25 | 16.50 | 23.25 | 21.75 | 22.00 | 28.75 | 27.25 | 27.50 | 34.25 | 32.75 | 33.00 | 39.75 | 38.25 |
| M12×1.25 | 12.00 | 17.63 | 16.38 | 18.00 | 23.63 | 22.38 | 24.00 | 29.63 | 27.38 | 30.00 | 35.63 | 34.38 | 36.00 | 41.63 | 40.38 |
| M12×1.5 | 12.00 | 18.75 | 17.25 | 18.00 | 24.00 | 23.25 | 24.00 | 30.75 | 29.25 | 30.00 | 36.75 | 35.25 | 36.00 | 42.75 | 41.25 |
| M12×1.75 | 12.00 | 19.88 | 18.13 | 18.00 | 25.88 | 24.13 | 24.00 | 31.88 | 30.13 | 30.00 | 37.88 | 36.13 | 36.00 | 43.88 | 42.13 |
| M14×1.25 | 14.00 | 19.62 | 18.37 | 21.00 | 26.62 | 25.37 | 28.00 | 33.62 | 32.37 | 35.00 | 40.62 | 39.37 | 42.00 | 47.62 | 46.37 |
| M14×1.5 | 14.00 | 20.75 | 19.25 | 21.00 | 27.75 | 26.25 | 28.00 | 34.75 | 33.25 | 35.00 | 41.75 | 40.25 | 42.00 | 48.75 | 47.25 |
| M14×2.0 | 14.00 | 23.00 | 21.00 | 21.00 | 30.00 | 28.00 | 28.00 | 37.00 | 35.00 | 35.00 | 44.00 | 42.00 | 42.00 | 51.00 | 49.00 |
| M16×1.5 | 16.00 | 22.75 | 21.25 | 24.00 | 30.75 | 29.25 | 32.00 | 38.75 | 37.25 | 40.00 | 46.75 | 45.25 | 48.00 | 54.75 | 53.25 |
| M16×2.0 | 16.00 | 25.00 | 23.00 | 24.00 | 33.00 | 31.00 | 32.00 | 41.00 | 39.00 | 40.00 | 49.00 | 47.00 | 48.00 | 57.00 | 55.00 |
| M18×1.5 | 18.00 | 24.75 | 23.25 | 27.00 | 33.75 | 32.25 | 36.00 | 42.75 | 41.25 | 45.00 | 51.75 | 50.25 | 54.00 | 60.75 | 59.25 |
| M18×2.0 | 18.00 | 27.00 | 25.00 | 27.00 | 36.00 | 34.00 | 36.00 | 45.00 | 43.00 | 45.00 | 54.00 | 52.00 | 54.00 | 63.00 | 61.00 |
| M18×2.5 | 18.00 | 29.25 | 26.75 | 27.00 | 38.25 | 35.75 | 36.00 | 47.25 | 44.75 | 45.00 | 56.25 | 53.75 | 54.00 | 65.25 | 62.75 |
| M20×1.5 | 20.00 | 26.75 | 25.25 | 30.00 | 36.75 | 35.25 | 40.00 | 46.75 | 45.25 | 50.00 | 56.75 | 55.25 | 60.00 | 66.75 | 65.25 |
| M20×2.0 | 20.00 | 29.00 | 27.00 | 30.00 | 39.00 | 37.00 | 40.00 | 49.00 | 47.00 | 50.00 | 59.00 | 57.00 | 60.00 | 69.00 | 67.00 |
| M20×2.5 | 20.00 | 31.25 | 28.75 | 30.00 | 41.25 | 38.75 | 40.00 | 51.25 | 48.75 | 50.00 | 61.25 | 58.75 | 60.00 | 71.25 | 68.75 |
| M22×1.5 | 22.00 | 28.75 | 27.25 | 33.00 | 39.75 | 38.25 | 44.00 | 50.75 | 49.25 | 55.00 | 61.75 | 60.25 | 66.00 | 72.75 | 71.25 |
| M22×2.0 | 22.00 | 31.00 | 29.00 | 33.00 | 42.00 | 40.00 | 44.00 | 53.00 | 51.00 | 55.00 | 64.00 | 62.00 | 66.00 | 75.00 | 73.00 |
| M22×2.5 | 22.00 | 33.25 | 30.75 | 33.00 | 44.25 | 41.75 | 44.00 | 55.25 | 52.75 | 55.00 | 66.25 | 63.75 | 66.00 | 77.25 | 74.75 |
| M24×2.0 | 24.00 | 33.00 | 31.00 | 36.00 | 45.00 | 43.00 | 48.00 | 57.00 | 55.00 | 60.00 | 69.00 | 67.00 | 72.00 | 81.00 | 79.00 |
| M24×3.0 | 24.00 | 37.50 | 34.50 | 36.00 | 49.50 | 46.50 | 48.00 | 61.50 | 58.50 | 60.00 | 73.50 | 70.50 | 72.00 | 85.50 | 82.50 |
| M27×2.0 | 27.00 | 36.00 | 34.00 | 40.50 | 49.50 | 47.50 | 54.00 | 63.00 | 61.00 | 67.50 | 76.50 | 74.50 | 81.00 | 90.00 | 88.00 |
| M27×3.0 | 27.00 | 40.50 | 37.50 | 40.50 | 54.00 | 51.00 | 54.00 | 67.50 | 64.50 | 67.50 | 81.00 | 78.00 | 81.00 | 94.50 | 91.50 |
| M30×3.0 | 30.00 | 43.50 | 40.50 | 45.00 | 58.50 | 55.50 | 60.00 | 73.50 | 70.50 | 75.00 | 88.50 | 85.50 | 90.00 | 103.50 | 100.50 |
| M30×3.5 | 30.00 | 45.75 | 42.25 | 45.00 | 60.75 | 57.25 | 60.00 | 75.75 | 72.25 | 75.00 | 90.75 | 87.25 | 90.00 | 105.75 | 102.25 |
| M33×3.5 | 33.00 | 48.75 | 45.25 | 49.50 | 65.25 | 61.75 | 66.00 | 81.75 | 78.25 | 82.50 | 98.25 | 94.75 | 99.00 | 114.75 | 111.25 |
| M36×3.0 | 36.00 | 49.50 | 46.50 | 54.00 | 67.50 | 64.50 | 72.00 | 85.50 | 82.50 | 90.00 | 103.50 | 100.50 | 108.00 | 121.50 | 118.50 |
| M36×4.0 | 36.00 | 54.00 | 50.00 | 54.00 | 72.00 | 68.00 | 72.00 | 90.00 | 86.00 | 90.00 | 108.00 | 104.00 | 108.00 | 126.00 | 122.00 |
| M39×4.0 | 39.00 | 57.00 | 53.00 | 58.50 | 76.50 | 72.50 | 78.00 | 96.00 | 92.00 | 97.50 | 115.50 | 111.50 | 117.00 | 135.00 | 131.00 |
| M42×3.0 | 42.00 | 55.50 | 52.50 | 63.00 | 76.50 | 73.50 | 84.00 | 97.50 | 94.50 | 105.00 | 118.50 | 115.50 | 126.00 | 139.50 | 136.50 |
| M42×4.5 | 42.00 | 62.25 | 57.75 | 63.00 | 83.25 | 78.75 | 84.00 | 104.25 | 99.75 | 105.00 | 125.25 | 120.75 | 126.00 | 146.25 | 141.75 |
钢丝螺套钻孔和攻丝
P——螺纹套安装应低于工件表面1/4～1/2螺距
L——螺纹套安装后有效长度
B——攻丝深度，包括倒角丝锥深度
D——*小钻孔深度
