基于主轴空运行自激励的数控机床激励方法

发布时间：2018-04-01 13:35

本文选题：数控机床　切入点：主轴空运行　出处：《华中科技大学学报(自然科学版)》2015年12期

【摘要】：针对工作台空运行自激励难以对机床主轴进行有效激励的问题,提出一种基于主轴空运行自激励的数控机床激励方法,主要利用主轴旋转过程中产生的偏心冲击力对机床进行激励,尤其是对主轴部分进行激励.对主轴空运行自激励运动方式进行了设计,同时对设计过程中可能存在的影响激励效果的因素进行分析,主要针对主轴空运行自激励方式设计中冲击速度的选取以及不同刀具对激励效果的影响进行实验分析.相对于工作台空运行自激励,该方法可以对机床主轴结构进行有效激励;而相对于敲击实验方法,主轴空运行自激励是在机床运动状态下进行的,能更准确反映机床结构在工作状态下的动态特性.
[Abstract]:In order to solve the problem that it is difficult to effectively motivate the spindle of the machine tool by self-excitation in the empty operation of the worktable, a self-excitation method of NC machine tool based on the self-excitation of the spindle is proposed.The eccentric impact force produced in the process of spindle rotation is mainly used to excite the machine tool, especially to the spindle part.The self-excitation motion mode of spindle empty operation is designed. At the same time, the factors that may affect the incentive effect in the design process are analyzed.This paper mainly analyzes the selection of impact velocity and the influence of different cutting tools on the excitation effect in the design of self-excitation mode of spindle empty operation.This method can effectively excite the spindle structure of the machine tool in contrast to the self-excitation of the worktable in the empty operation, and the self-excitation of the spindle running in the machine tool is carried out under the moving state of the machine tool in comparison with the experimental method of percussion.It can more accurately reflect the dynamic characteristics of machine tool structure in the working state.
【作者单位】：华中科技大学国家数控系统工程技术研究中心;华中科技大学数字制造装备与技术国家重点实验室;
【基金】：国家自然科学基金青年科学基金资助项目(51405176);国家自然科学基金资助项目(51275188) 湖北省重大科技创新计划资助项目(2013AAA008)
【分类号】：TG659

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