The bigger is the absolute value of minus rake angle, the higher is the ability of resisting the tooth edge collapse, but more quick is the toot...

• 但负前角的绝对值越大,抗崩刃能力越强,齿形精度下降越快。而硬质合金插齿刀的凸曲前刀面设计可很好地解决这个问题。