
铰刀加工是永利welcome官方精加工中最常见的一种 ,其高精度、高效率、好的粗糙度为铰刀的主要优点;
| 高速钢机用铰刀的直径公差 (mm) | ||||
| 铰刀直径 | 直径的极限偏差 | H7级的精密度铰刀 | H8级精密度铰刀 | H9级精准度铰刀 | 
| >5.3~6.0 | 0.01 | 0.005 | 0.008 | 0.014 | 
| 0.015 | 0.025 | |||
| >6.0~10.0 | 0.012 | 0.006 | 0.01 | 0.017 | 
| 0.018 | 0.03 | |||
| >10.0~18.0 | 0.015 | 0.008 | 0.012 | 0.02 | 
| 0.022 | 0.036 | |||
| >18.0~30.0 | 0.017 | 0.009 | 0.016 | 0.025 | 
| 0.028 | 0.044 | |||
| >30.0~50.0 | 0.021 | 0.012 | 0.019 | 0.03 | 
| 0.033 | 0.052 | |||
| >50.0~80.0 | 0.025 | 0.014 | 0.022 | 0.036 | 
| 0.039 | 0.062 | |||
| >80.0~100.0 | 0.029 | 0.016 | 0.026 | 0.042 | 
| 0.045 | 0.073 | |||
| 硬质合金铰刀的直径公差 (mm) | ||||
| 铰刀直径 | 直径的极限偏差 | H7级准确度铰刀 | H8级控制精度铰刀 | H9级精准度铰刀 | 
| >5.3~6.0 | 0.012 | 0.007 | 0.001 | 0.019 | 
| 0.018 | 0.03 | |||
| >6.0~10.0 | 0.015 | 0.009 | 0.014 | 0.023 | 
| 0.022 | 0.036 | |||
| >10.0~18.0 | 0.018 | 0.011 | 0.017 | 0.027 | 
| 0.027 | 0.043 | |||
| >18.0~30.0 | 0.021 | 0.013 | 0.021 | 0.033 | 
| 0.033 | 0.052 | |||
| >30.0~40.0 | 0.025 | 0.016 | 0.025 | 0.04 | 
| 0.039 | 0.062 | |||