液压锁紧轴套实验平台设计及实验研究

发布时间：2018-07-26 08:55

【摘要】：液压锁紧轴套是五轴联动机床的重要组成部件,多年来其核心技术主要集中在欧洲,为突破国外对于此技术的封锁,自主研发设计液压锁紧轴套势在必行。本文设计了液压锁紧轴套的实验方法,并根据实验要求设计实验平台,对液压锁紧轴套进行实验,通过进行不同的实验,分析实验数据、理论计算以及有限元分析,来验证液压锁紧轴套的可靠性。本文以壳体理论与无矩理论为基础,以有矩理论为修正,推导出了液压锁紧轴套锁紧扭矩的数学模型,并根据液压锁紧轴套的结构以及工作原理建立有限元模型并进行仿真计算,得出了液压锁紧轴套锁紧扭矩与轴套压力、有效长度、轴套内径以及径向间隙之间的关系。为验证理论计算以及有限元仿真的正确性,设计液压锁紧轴套扭矩测试实验。同时为验证液压锁紧轴套工作的可靠性设计了大尺寸液压锁紧轴套保压密封实验以及液压锁紧轴套锁紧精度实验。根据实验设计要求,建立实验台,实验台主要包括支撑系统以及液压系统两部分,最后利用实验台进行实验,记录实验数据。通过对比实验数据,理论推导以及有限元分析结果,总结出以下结论:实验数据、有限元方法及理论计算数据基本吻合,说明对于液压锁紧轴套锁紧扭矩的公式推导正确;大尺寸液压锁紧轴套保压性能良好;液压锁紧轴套锁紧精度高;液压锁紧轴套实验台设计合理,能够顺利完成实验。
[Abstract]:Hydraulic locking sleeve is an important component of five-axis linkage machine tool. For many years, its core technology is mainly concentrated in Europe. In order to break the blockade of foreign countries, it is imperative to design hydraulic lock sleeve independently. In this paper, the experimental method of hydraulic locking shaft sleeve is designed, and the experimental platform is designed according to the experimental requirements. Through different experiments, the experimental data, theoretical calculation and finite element analysis are analyzed. To verify the reliability of the hydraulic lock sleeve. Based on the shell theory and the moment free theory, the mathematical model of the locking torque of the hydraulic lock shaft sleeve is derived in this paper, which is modified by the moment theory. According to the structure and working principle of the hydraulic locking shaft sleeve, the finite element model is established and the simulation calculation is carried out. The relationship between the lock torque and the pressure, effective length, inner diameter and radial clearance of the shaft sleeve is obtained. In order to verify the correctness of theoretical calculation and finite element simulation, the torque testing experiment of hydraulic locking sleeve was designed. At the same time, in order to verify the reliability of the hydraulic locking sleeve, the experiments of the pressure keeping seal and the locking precision experiment of the hydraulic lock shaft sleeve are designed. According to the requirements of experimental design, an experimental platform is established, which mainly consists of two parts: support system and hydraulic system. Finally, the experimental data are recorded by using the experimental bench. By comparing the experimental data, theoretical derivation and finite element analysis results, the following conclusions are concluded: the experimental data, finite element method and theoretical calculation data are basically consistent, which shows that the formula for the locking torque of the hydraulic locking sleeve is correct; The large size hydraulic lock shaft sleeve has good pressure keeping performance, high locking precision and reasonable design of the hydraulic lock shaft sleeve test bench, which can successfully complete the experiment.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG502.32

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