钻轴承钢群钻钻尖几何参数的优化试验

Optimization Test of CMFD'S Geometrical Parameters for Drilling Bearing Steel

在前人对钻轴承钢群钻几何参数优化的初步试验基础上，做了进一步优化试验，优化出钻轴承钢深孔群钻的外刃顶角和结构圆角后角的较优值分别是１００°和８°左右。

Based on the preliminary optimization tests of CMFD' S drill point pa- rameters for drilling bearing steel, the further optimization tests have been made, andthe experimental results show that the better value of the top angle is about 100 degree,and the relief angle about 8 degree.