铣刀参数对薄壁零件铣削稳定性的影响

本文通过对斜角切削的几何关系进行分析，得到了斜角切削参数和切削力系数之间的关系表达式，从而在理论上得到了铣刀参数和切削颤振之间的数学关系表达式。并在此基础上研究了在相同的铣削参数条件下，铣刀螺旋角和法向前角对于铣削稳定性的影响，绘制了不同铣刀参数下的轴向切深、径向切深和主轴转速的三维稳定性图。通过对不同参数下稳定性图的研究，发现随着螺旋角和法向前角的增加，铣削的稳定性逐渐增加。

Effect of Milling Cutter Parameters on Stability

By analyzing the geometrical relationship of oblique cutting, this paper obtains the relationship expression between the parameters of oblique cutting and milling coefficients, and derives the mathematic expressions in theory between the cutter parameters and chatter. Moreover, this paper studies the effect of helix angle and normal rake angle on milling stability under the condition of the same milling parameters, and plots the three-dimensional stability lobes of the spindle speed, the axial depth and the radial depth. Through comparing these stability lobes, it can be find that the milling stability is increased with the increment of helix angle and normal rake angle.