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介绍了一种利用立式铣床加工多边体工件的新装置，说明了它的结构原理，对加工过程进行了运动分析并给出了运动轨迹方程，对加工理论误差进行了推算。
A new device for machining polygonal workpieces by vertical milling machine is introduced. The principle of its structure, the motion analysis of the machining process and the equation of motion trajectory are given, and the theoretical error of machining is deduced.