摘要
给出了横刃处前角的数学表达式，为合理选择螺旋面刃磨参数，减少轴向力，提高钻头耐用度提供可靠的依据．
Gives the function of front rake angle in the Chisal edge, Gives the available evidence to choice parameter of helical sharpening to reduce of the axial force and to increase the darable of drilling head.
关键词
后刀面刃磨
横刃前角
螺旋面钻头
钻头
耐用度
sharpening of backface, front rake angle of choisal edge, direction number
