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研究了平面包络的复杂螺旋面钻尖 ,给出了钻尖结构参数的计算公式 ,研究了钻尖结构参数与刃磨参数之间的关系 ,结果表明钻尖的结构圆周后角及尾隙角随着钻头轴向推进速度与自转速度的比值 k2 的增大而增大 ,随着钻头摆动速度与自转速度之比 k1 的增大单调减小 ,随着砂轮与摆动中心的距离 H的增大而单调减小 ,随着确定前刀面位置的 p0 值的增大而单调减小 ,随着砂轮平面与钻轴的夹角θ的增大而增大 ;顶角随着θ的增大而单调增大 ,随着k1 、k2 、H的增大先减小后增大 ,随着 p0 的增大而减小 ;横刃斜角随着θ、k1 、k2 、H的增大先增大后减小 ,随着 p0 的增大而减小。
The complex helical surface drill tip with plane envelope is studied. The formula of drill tip structural parameters is given. The relationship between the drill tip structural parameters and the grinding parameters is studied. The results show that the clearance angle and the clearance The angle increases with the increase of the ratio k2 of the axial advancing speed and the rotation speed of the drill bit, monotonically decreases with the increase of the ratio k1 of the bit oscillating speed and the rotation speed, and as the distance H between the grinding wheel and the oscillating center increases Large and monotonically decreasing, monotonically decreasing with increasing p0 value of the rake face, and increasing with the angle θ between the plane of the grinding wheel and the drill axis. As the apex angle increases with θ But increases monotonously with the increase of k1, k2, H first decreases then increases and decreases with the increase of p0; the chisel angle increases first with the increase of θ, k1, k2, H After the big decreases, decreases as p0 increases.