本文介绍了新型钻头的强力钻削、轴向力和扭矩、刀具磨损、切屑变形、动态加速度、精孔钻削及特殊孔钻削等方面的试验情况和结果,证明了新型钻头的切削性能良好。 This paper introduces the test results and results of the new type of drill bit, such as strong drilling, axial force and torque, tool wear, chip deformation, dynamic acceleration, precision hole drilling and special hole drilling, etc., which prove the cutting performance of the new drill bit is good .