摘要进给传动部件动态特性的优劣不但直接影响到一台机床的工作性能和加工精度,而且对进给伺服系统的伺服性能影响也很大。
滚珠丝杠是数控机床直线进给系统中传递运动的核心部件。本论文以滚珠丝杠传动进给系统为实验对象,对目前国内外进给系统静动态特性的研究状况进行了简单介绍;利用三文造型软件Pro/e,对进给系统静动态测试试验台的组成部件进行了设计、校核和建模;基于有限元分析方法,利用ANSYS软件对测试试验台的工作台、底座和滚珠丝杠进行了模态分析,并对滚珠丝杠做了静力分析,查看在轴向力作用下的屈曲变形;对进给系统静动态特性测试系统进行设计,通过对激励方式的选择和激励点的布置,以及相关传感器的选型,完成对测试系统的整体建模。7948
关键词 进给系统 静动态特性 ANSYS
毕业设计说明书(论文)外文摘要
Title The test system design of static and dynamic
characteristics of scrolling support linear feed
System
Abstract
The feed system is a key part of Numerical Control Machine Tool. The dynamic characters of feed transmission parts not only directly affect working capability and machining precision of a machining tool,but also influence orientation precision of feed system .
Ball screw mechanism is common used in Numerical Control Machine Tool.In this paper, we take ball screw feed system as an example. First, we briefly discuss the static and dynamic characteristics of feed system at domestic and international position. Second, we use software Pro/e to finish the design, verification and modeling of the components of test system. Third, do modal analysis on the table, the base and the ball screw, and do static analysis of the ball screw with software ANSYS to see its buckling under axial force. Four, design the dynamic test system of feed system by selecting the incentives, arranging the incentive points and selecting relevant sensor to complete overall modeling of the test system.
Keywords Feed system Static and dynamic characteristics ANSYS
目 次
1 绪论 1
1.1 研究背景及课题来源 1
1.2 进给系统静动态特性的研究现状 1
1.3 本文研究内容 3
2 滚动支承直线进给系统静动态特性测试试验台设计 4
2.1 试验台底座设计 4
2.2 工作台设计 5
2.3 滚动直线导轨选型计算 7
2.4 滚动丝杠副选型计算 10
2.5 滚动轴承选型计算 13
2.6 伺服电动机校核 16
2.7 联轴器选型计算 17
3 直线进给系统静动态特性测试系统有限元建模与动态分析 19
3.1 ANSYS软件简介 19
3.2 ANSYS模态分析 19
3.2.1 滚珠丝杠模态及压杆静力分析 20
3.2.2 底座模态分析 24
3.2.3 工作台模态分析 28
4 直线进给系统动态特性测试系统及装置研制 32
4.1 实验测试系统总体设计 32
4.2 测试系统各单元选用 32
4.2.1 激励系统 32