摘要
针对ZK5201鼓式刹车片专用钻床,对其主轴系统和进给系统的钻孔精度进行研究。利用有限元软件平台,重点分析机床主轴的径向应力应变,并且从主轴的模态分析得到了主轴的固有频率和振型,结果表明该钻床的主轴系统能够保证最终加工精度。通过建立进给系统的数学模型,利用MATLAB分析系统参数对阶跃响应动态特性曲线的影响,建立了进给系统误差与主要系统参数之间的定量关系,通过优化系统参数,降低进给系统的误差,从而提高了刹车片钻床的稳定性和精度。
The machining precision of spindle system and feed system in the ZK5201 drum brakes drilling machine were analyzed carefully. Finite element software platform was used to analyze the radial stress and strain of machine tool spindle, and the natural frequencies and mode shapes of the spindle axis were got by modal analysis. The results showed that the spindle of this machine tool can meet the final machining precision. Moreover, a mathematical model of the feed system was established in MATLAB. The quantitative relationship between the feed system and the main system parameters was constructed by analyzing the dynamic characteristics of step response to the feed system. Through quantitative analysis of the accuracy and combined with the actual situation processing machine, some methods to improve the stability and the accuracy of the machine were proposed, which provided some referable methods for drilling process.
出处
《机械设计与制造》
北大核心
2017年第9期155-158,共4页
Machinery Design & Manufacture
关键词
鼓式刹车片
数控钻床
精度
动态特性
Drum Brake
CNC Drilling Machine
Accuracy
Dynamic Characteristics
