刀具的效率取决于其材料、所采用的走刀量、切削速度和吃刀深度、采用的冷却液以及刀刃的几何形状.近几年来.在立铣刀上.几何形状几乎没有什么大的变化.但Weldon工具公司(美国)现已提出了一种新的立铣刀结构。这种立铣刀的切削刃为螺旋状 The efficiency of a tool depends on its material, the amount of cutting used, the cutting speed and depth of cut, the coolant used, and the geometry of the cutting edge. In recent years, there have been few major changes in the geometry of end mills But Weldon Tool Company (USA) has now proposed a new end mill structure. The cutting edge of this end mill is helical