“在立铣上加工空间曲面的一种方法”(见本刊1984年第5期),叙述了用立铣刀加工型面为正弦曲面工件的方法。此文中依据的数学原理基本准确,但立铣刀轴线运动轨迹方程存在弊端;α角的计算公式不够准确;x_刀、y_刀的计算公式不完整;故今与作者商榷。 “A Method for Machining Spatial Surfaces on End Mills” (see Journal No. 5, 1984), describes a method of machining a profiled workpiece to be a sinusoidal surface using an end mill. The mathematical principle based on this article is basically accurate, but the milling cutter axis motion trajectory equation has disadvantages; the calculation formula of alpha angle is not accurate enough; the calculation formula of x_knife and y_knife is not complete; therefore, it is discussed with the author.