基于ANSYS的等离子机床轮盘底的静力学及振动分析

ANSYS-Based Static and Vibration Analysis of Plasma Machine Wheel Base

摘要: 在机床加工过程中，振动现象不可避免，尤其是加工区域的振动会直接影响加工精度以及设备稳定性。为了提升机床的加工性能，开展整机及关键零部件的力学特性研究具有重要的工程意义。本研究以等离子机床轮盘底为研究对象，通过有限元方法对其进行了系统的力学性能评估。静力学分析结果表明，该部件的整体结构刚度满足设计要求；通过模态分析得到了零件的各阶固有频率，并结合谐响应分析发现，当外部激励频率达到200 Hz时，零件左端圆盘区域会出现明显的共振效应。在此基础上，进一步对结构参数进行了优化设计，降低了零件整体的体积，节约了制造成本。

Abstract: In the process of machine tool machining, vibration phenomenon is inevitable, especially the vibration of the machining area will directly affect the machining accuracy and equipment stability. In order to improve the machining performance of machine tools, it is of great engineering significance to carry out research on the mechanical properties of the whole machine and key components. In this study, the plasma machine wheel bottom is taken as the research object, and its mechanical properties are evaluated systematically by the finite element method. The results of the static analysis show that the overall structural rigidity of the part meets the design requirements; through the modal analysis to obtain the parts of each order of the intrinsic frequency, and combined with the harmonic response analysis found that when the external excitation frequency reaches 200Hz, the left end of the part disc region will appear obvious resonance effect. On this basis, the structural parameters are further optimized and designed to reduce the overall volume of the part and save the manufacturing cost.