Pro/E加工中心滑动支承直线进给系统设计与静动校核分析

摘要本文为“高档数控机床与基础制造装备”国家科技重大专项“高档数控机床设计关键技术研究和数字化工具开发”的一个课题，主要研究滑动支撑进给系统的设计和静动校核分析。对滑动支承直线进给系统的设计主要有：传动设计、滚珠丝杠及其支承形式的选择、伺服电动机的选择、伺服系统的设计。对进给系统的静动态特性的研究关键在于建立其静力学模型，论文通过Pro/Engineer建立滑动支承直线进给系统的静力学模型。在此基础上建立滚珠丝杠副、进给系统工作台和底座的有限元模型，运用Ansys分析外载荷和自身结构参数对进给系统定位精度的影响，以及筋板结构对滑台底座固有频率的影响。61554

毕业论文关键字进给系统滑动导轨定位精度有限元

毕业设计说明书（论文）外文摘要

Title Design of linear feeding system of sliding bearing machining center and the static and dynamic analysis

Abstract This subject is one of the "High-grade CNC Machine Tools and Basic Manufacturing Equipment" of National science major technology project which named "Research on Key Technology of High-grade CNC Machine Design and the Development of Digital Tools" . It mainly studies on design of feed-ing system of sliding bearing , and static and dynamic analysis. The design of linear feeding system of sliding bearing includes the ball screw and its support , the choice of servo motor , and the design of sever system . We used software Pro/Engineer to finish the design of sliding support feeding system and the building the model of its static analysis. On this basis , we builded the finite element model of the ball screw , the work bench and the base . At last , we used the software of Ansys to finish the analysis of the influence of positioning accuracy caused by external loads and their structure parameters , and the influence of base’s natural frequency caused by its structure type .

Keywords Feeding system Slideing guide Positioning accuracy Finite element

1 绪论 1

1.1 研究背景 1

1.2 研究的目的 1

1.3 滑动支承直线进给系统设计的研究现状及发展趋势 2

1.3.1 滑动支承直线进给系统设计研究概况 2

1.3.2 数控进给系统静态特性研究概况 3

1.3.3 当前滑动支承进给系统研究的不足 4

2 滑动支承直线进给系统设计 5

2.1 传动系统 5

2.2 滚珠丝杠 6

2.2.1 精度 6

2.2.2 疲劳强度 6

2.3 丝杠支承 7

2.4 伺服电机 9

2.5 精度验算 11

2.5.1 滚珠丝杠的拉压刚度 11

2.5.2 丝杠轴承的轴向刚度 11

2.5.3 丝杠螺母的接触刚度 11

2.5.4 挠性联轴器的扭转刚度 11

2.5.5 伺服刚度 11

2.5.6 综合刚度 12

2.5.7 弹性变形 Pro/E加工中心滑动支承直线进给系统设计与静动校核分析:http://www.751com.cn/jixie/lunwen_67361.html