大型数控车床进给伺服系统的建模与分析

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (6) : 32-36.

论文

大型数控车床进给伺服系统的建模与分析

刘丽兰; 刘宏昭; 吴子英; 王建平

作者信息 +

Modeling and analysis of the feed servo system of a large CNC machine tool

Liu Li-lan; Liu Hong-zhao; Wu Zi-ying; Wang Jian-ping

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文章历史 +

摘要

针对某大型数控车床的横向进给伺服系统，建立了考虑摩擦和传动刚度的综合力学模型和数学模型。通过数值仿真分析了低速进给下静动摩擦力差值和传动刚度变化对工作台输出的影响，得出了工作台产生爬行运动的可能性条件。该型数控车床横向进给系统现场实验的结果验证了理论分析的合理性。所得结论为数控机床进给伺服系统的稳定性和加工精度的提高提供了研究基础。

Abstract

The transverse feed system of a large CNC machine tool is investigated. The mechanical and mathematical models about the system containing friction and transmission stiffness are established. And the influences of the variance of the static and kinematic friction and the transmission stiffness on the outputs of the worktable are analyzed by numerical simulations. A few of possible conditions for the stick-slip occurrence of the worktable are obtained. The rationality of the theory analysis is proved by the field experiment results of the transverse feed system of the large CNC machine tool. The work in this paper can provide a research basis for the improvement of the stability and machining accuracy of feed systems

导出引用

刘丽兰;刘宏昭;吴子英;王建平. 大型数控车床进给伺服系统的建模与分析[J]. 振动与冲击, 2012, 31(6): 32-36

Liu Li-lan;Liu Hong-zhao;Wu Zi-ying;Wang Jian-ping. Modeling and analysis of the feed servo system of a large CNC machine tool[J]. Journal of Vibration and Shock, 2012, 31(6): 32-36