新型螺旋传动大功率大扭矩扭振振动台（机械及基础系统设计）（本科毕业论文设计）.doc

摘 要

　 本课题来源于某市市攻关项目。是设计一种新型的实验台，主要用于弹性联轴器，材料等的刚度系数，疲劳强度等的测试。目前国内还没有这种新型设备，类似的设备主要从国外引进。
所谓新型实验台是一种利用滚动螺旋将液压缸的往复直线运动直接转换成往返摆动的机构, 该机构是在滚珠丝杠基础上演化而来的一种逆螺旋传动机构。输入直线运动由油缸活塞运动实现，油缸活塞带动一新型螺旋传动机构作输出摆动振动。
本论文进行了以下研究内容：(1) 方案设计。（2）对执行机构的传动原理、结构进行介绍。（3）对机构设计计算，并完成轴承及其轴承座的设计及计算选型。（4）应用大型建模软件pro/e对各个零件进行了实体造型并且完成零件的建模装配，生成机构的装配模型。 (5)基于机构的装配模型，对机构进行运动仿真模拟，生成机构的运动过程动画文件。(6)对各个零件进行了受力分析以及载荷计算并应用有限元软件ANSYS对运动机构中的关键零部件进行了有限元分析。(7)滚珠是机构中的关键零件，运动情况比较复杂，应用运动学分析原理对滚珠的运动规律进行了分析计算。 (8)应用赫兹弹性接触理论，对滚珠进行接触分析，并校核滚珠的接触强度。


关键词: 滚动螺旋传动，有限元，振动，运动仿真












ABSTRACT

This topic comes from research projects in Chongqing Municipality. Is to design a new type of test-bed, mainly used for flexible coupling coefficient, such as the stiffness and strength tests. At present no such new domestic equipment, a similar device introduced from abroad.
The so-called Taiwan is a new experiment using a rolling hydraulic cylinder will spiral of reciprocating linear motion directly into the body from the swing, which is in the ball screw on the basis of evolution from a reverse spiral transmission mechanism. Enter linear motion by the piston movement to achieve the fuel tank, fuel tanks led the Pistons a new spiral transmission mechanism for the output swing vibration.
This paper conducted the following studies: (1) programme design. (2) to drive the implementation of the principle and structure are introduced. (3) agencies to design, and complete the bearing housings and its calculation of the design and selection. (4) application of large-scale modeling software pro / e of various parts for the completion of solid modeling and modeling parts of the assembly to generate the assembly model. (5) Based on the model assembly, the agency simulation exercise, the campaign generated animation process documents. (6) in various parts of the Analysis and a load calculation and application of finite element software ANSYS sports bodies in the key parts and components for the finite element analysis. (7) ball is the key parts of the body, the movement is more complicated situation, application of principles of kinematics of the movement of the ball for the analysis and calculation. (8) of Hertz elastic contact theory, the ball contact analysis, and checking the ball contact strength.


Key words: rolling spiral transmission, finite element, vibration, motion simulation




目 录

中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 …1
1.1 引言 1
1.2 国内外研究现状 .3
1.2.1国内外研究概况和发展趋势 3
1.2.2技术背景及意义 .5
2总体方案设计及零部件的设计计算……………...…………………...6
2.1新型螺旋传动机构的总体方案及其布局 .……………………………………6
2.2新型螺旋传动机构的设计计算 …………………………………………….8
2.2.1滚珠运动分析 8
2.2.2滚珠接触分析 ………..15
2.2.3新型螺旋传动大功率大扭矩扭振振动台各零部件尺寸的确定及其校核 ……24
2.2.4 结果分析 33
2.3轴承及其轴承座的设计选型和计算 ……………………………………….34
2.4本章小节……………………………………………………………...36
3 Pro/E软件的三维实体建模及运动仿真 .37
3.1Pro/E建立新型螺旋传动大功率大扭矩扭振振动台机械及基础系统，画出所有零部件的三维实体模型并装配 37
3.2新型螺旋传动大功率大扭矩扭振振动台运动仿真并生成三维运动动画图 41
3.3本章小节 45
4 ANSYS有限元分析 46
4.1.概述 46
4.2有限元基本理论 46
4.3新型螺旋传动大功率大扭矩扭振振动台载荷计算及有限元分析 49
4.3.1新型螺旋传动大功率大扭矩扭振振动台载荷计算 49
4.3.2新型螺旋传动大功率大扭矩扭振振动台有限元分析 50
4.4计算结果及分析 55
4.5本章小节 55
5 结论 56
致谢 57
参考文献 58