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新型并联机床是空间多环机构在数控机床上的应用，本文建立了该机床的弹性动力学有限元模型，并确定了机床的结构参数及几种典型的加工轨迹，经过有限元实例计算得到了机床一阶固有频率变化曲线，通过对计算结果的分析得出机床固有频率随机床结构参数和刀头姿态变化的规律。本文的研究对在机床设计阶段提高机床的动力学性能具有重要意义。
The new parallel machine tool is the application of the space multi-ring mechanism on the CNC machine tool. In this paper, the finite element model of the elastic dynamics of the machine tool is established, and the structural parameters of the machine tool and several typical machining trajectories are determined. Through the analysis of the calculation results, the law of the natural frequency of the machine tool with the structural parameters of the machine bed and the change of the posture of the cutter head is obtained. The research in this paper is of great significance to improve the dynamic performance of the machine tool in the stage of machine tool design.