摘要
应用Python语言实现对ABAQUS的二次开发,建立了JKM8330数控机床砂轮主轴的三维模型,采用弹簧单元模拟轴承支承的弹性支承边界条件,建立了砂轮主轴的动力学有限元分析模型,研究其在不同边界条件下的模态特性。通过参数化讨论的研究方法,深入研究了主轴振型对高速数控磨床加工精度的影响,获得了不同弹性支承刚度对主轴模态频率的影响规律。研究结果为高速数控磨床的结构优化设计提供了理论依据。
The threedimensional model of JKM8330 CNC machine grinding wheel spindle is established based on ABAQUS. The spring elements are adopted to simulate the elastic support boundary conditions. The dynamic mechanics finite element analysis model for grinding wheel spindle is proposed to study the modal characteristics for different boundary conditions. A numerical parametrical study is conducted to discuss the effect of the main shaft vibration mode on the machining precision of high speed CNC grinding machine,and the influence law of the elastic support stiffness on the spindle modal is obtained. It is signif- icant to Provide theoretical references for the structure optimization design of high speed grinding machine.
出处
《制造技术与机床》
北大核心
2016年第3期79-83,共5页
Manufacturing Technology & Machine Tool
基金
国家科技重大专项项目(2015ZX04002022-004)
