螺纹刀具不怕折断,丝攻折断后可能造成工件报废的风险,螺纹铣刀即使人为折断也容易取。
螺纹铣刀的加工效率远高于丝攻;
盲孔丝攻不可攻到底部,螺纹铣刀可以。
除了M和UN之外,一把螺纹铣刀可加工不同旋向的内外螺纹,丝攻不行。
相同螺距不同螺纹尺寸的螺纹孔,丝攻需要更换几支,螺纹铣刀可通用。
螺纹孔径第一次通规不过时,螺纹铣刀可通过刀补修正,丝攻则不行,工件只有报废。
螺纹铣刀成本更低,虽然单支螺纹铣刀贵过丝攻,但是算到单个螺纹成本比丝攻低很多。
螺纹刀具精度更高,螺纹铣刀以刀补实现精度,可以选择客户需要的精度等级。
光洁度好,螺纹铣刀铣出来的牙光洁度优于丝攻。
螺纹铣刀的耐用度是丝锥的十多倍甚至数十倍,减少换刀具的工时浪费。
在较大螺纹孔加工时丝攻无法企及,螺纹铣刀可瞬时实现。
螺纹铣刀切削为粉末状短屑,无缠刀可能;丝攻切削为螺旋状铁屑,容易缠刀。
螺纹铣刀非全齿接触切削,机床负载和切削力都比丝攻小。
装夹简单,丝攻需要柔性攻丝刀柄;螺纹铣刀可用ER HSK 液压 热涨等刀柄。
一把可舍式螺纹铣刀杆可同时更换公制.美制.英制等刀片,经济型好。
螺纹铣刀及刀具的相关参数:
公制普通螺纹
螺 絲 | 下 孔 徑 | 參 考 | |||||||
標 稱 | 100% | 1級螺紋 | 2級螺紋 | 3級螺紋 | 最 小 尺 寸 | 最 大 尺 寸 | |||
1級 | 2級 | 3級 | |||||||
M1 X0.25 | 0.73 | 0.77(85%) | 0.78(80%) | 0.729 | 0.774 | 0.785 | |||
M1.1X0.25 | 0.83 | 0.87(85%) | 0.88(80%) | 0.829 | 0.874 | 0.885 | |||
M1.2X0.25 | 0.93 | 0.97(85%) | 0.98(80%) | 0.929 | 0.974 | 0.985 | |||
M1.4X0.3 | 1.08 | 1.12(85%) | 1.14(80%) | 1.075 | 1.128 | 1.142 | |||
M1.6X0.35 | * | 1.30(80%) | 1.32(75%) | 1.221 | 1.301 | 1.321 | |||
M1.7X0.35 | * | 1.40(80%) | 1.42(75%) | 1.321 | 1.401 | 1.421 | |||
M1.8X0.35 | * | 1.50(80%) | 1.52(75%) | 1.421 | 1.501 | 1.521 | |||
M2 X0.4 | 1.57 | 1.65(80%) | 1.65(75%) | 1.567 | 1.657 | 1.679 | |||
M2.2X0.45 | * | 1.81(80%) | 1.83(75%) | 1.713 | 1.813 | 1.838 | |||
M2.3X0.4 | 1.87 | 1.95(80%) | 1.97(75%) | 1.867 | 1.957 | 1.979 | |||
M2.5X0.45 | * | 2.11(80%) | 2.13(75%) | 2.013 | 2.113 | 2.138 | |||
M2.6X0.45 | 2.11 | 2.21(85%) | 2.22(75%) | 2.113 | 2.213 | 2.238 | |||
* | M3 X0.6 | 2.35 | 2.42(90%) | 2.42(90%) | 2.42(90%) | 2.280 | 2.420 | 2.440 | 2.440 |
M3 X0.5 | 2.46 | 2.57(80%) | 2.59(75%) | 2.62(70%) | 2.459 | 5.571 | 2.599 | 2.639 | |
M3.5X0.6 | 2.85 | 2.95(85%) | 3.01(75%) | 3.05(70%) | 2.850 | 2.975 | 3.010 | 3.050 | |
* | M4 X0.75 | 3.19 | 3.23(95%) | 3.31(85%) | 3.31(85%) | 3.106 | 3.256 | 3.326 | 3.326 |
M4 X0.7 | * | 3.36(85%) | 3.39(80%) | 3.43(75%) | 3.242 | 3.382 | 3.422 | 3.466 | |
M4.5X0.75 | 3.69 | 3.81(85%) | 3.85(80%) | 3.89(75%) | 3.688 | 3.838 | 3.878 | 3.924 | |
* | M5 X0.9 | 4.03 | 4.07(95%) | 4.17(85%) | 4.17(85%) | 3.930 | 4.090 | 4.170 | 4.170 |
M5 X0.8 | * | 4.26(85%) | 4.31(80%) | 4.35(75%) | 4.134 | 4.294 | 4.334 | 4.384 | |
* | M5.5X0.9 | 4.53 | 4.57(95%) | 4.67(85%) | 4.67(85%) | 4.430 | 4.590 | 4.670 | 4.670 |
M6 X1 | 4.92 | 5.08(85%) | 5.13(80%) | 5.19(75%) | 4.917 | 5.107 | 5.153 | 5.217 | |
M7 X1 | 5.92 | 6.08(85%) | 6.13(80%) | 6.19(75%) | 5.917 | 6.107 | 6.153 | 6.217 | |
M8 X1.25 | 6.65 | 6.85(85%) | 6.85(85%) | 6.92(80%) | 6.647 | 6.859 | 6.912 | 6.982 | |
M9 X1.25 | 7.65 | 7.85(85%) | 7.85(85%) | 7.92(80%) | 7.647 | 7.859 | 7.912 | 7.982 | |
M10 X1.5 | 8.38 | 8.54(90%) | 8.62(85%) | 8.70(80%) | 8.376 | 8.612 | 8.676 | 8.751 | |
M11 X1.5 | 9.38 | 9.54(90%) | 9.62(85%) | 9.70(80%) | 9.376 | 9.612 | 9.676 | 9.751 | |
M12 X1.75 | * | 10.30(90%) | 10.40(85%) | 10.50(80%) | 10.106 | 10.371 | 10.441 | 10.531 |