使用不同前角度的YG刀具对7050铝合金进行切削试验。试验结果表明:随着刀具前角的不断增大,三向切削力呈现较大幅度的减小趋势,切削表面质量也相应提高,但当前角增大到15°时,切削表面质量变差。究其原因在于,随着刀具前角的不断增大,刀尖锋刃程度增强,致使切削力减小,但是前角超过15°后,容易产生积屑瘤,致使切削表面质量变差。 7050 aluminum alloy was cut using YG tools with different front angles. The experimental results show that with the increase of the tool rake angle, the triaxial cutting force decreases more sharply and the quality of the cutting surface increases accordingly. However, when the current angle is increased to 15 °, the cutting surface quality deteriorates. The reason is that, as the tool rake angle increases, the blade tip edge degree increases, resulting in reduced cutting force, but the rake angle exceeds 15 °, prone to BUE, resulting in poor cutting surface quality.