通过对圆柱形螺旋铣刀加工切削速度的计算和受力分析得知:当铣刀螺旋角为ω=60°时,刀具寿命可提高4～5倍,生产效率也大为提高。 Through the calculation of the cutting speed of the cylindrical spiral cutter and its stress analysis, it is found that when the helix angle of the cutter is ω = 60 °, the life of the cutter can be increased by 4 ~ 5 times and the production efficiency is greatly improved.