本文首先从切削剪切变形和刀具离散化理论出发，推导出高速铣削条件下铣削力和切削速度的关系模型。
A relation model between cutting forces and cutting speed is established for high speed milling condition on the basis of research into the theory of shear distortion and the discrete milling cutter.
采用四面刃的剪切刀片，提高了刀具的使用寿命。
The adoption of four-sideedge shearing blade prolongs the service life of blade.
本文通过对盘形滚刀破岩工作运动特点、刀具磨损特性和破碎出的岩碴的分析，认为盘形滚刀的破岩存在着一定的剪切作用，它缘于盘形滚刀的侧向不平衡力。
On the analysis of the motional characteristics of disc cutters, cutters wear and tear, breaking rocks with them, the rock-cut must exist, This would come from the side-force.
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