摘 要

　 本課題來源于某市市攻關項目。是設計一種新型的實驗臺，主要用于彈性聯(lián)軸器，材料等的剛度系數(shù)，疲勞強度等的測試。目前國內還沒有這種新型設備，類似的設備主要從國外引進。
所謂新型實驗臺是一種利用滾動螺旋將液壓缸的往復直線運動直接轉換成往返擺動的機構, 該機構是在滾珠絲杠基礎上演化而來的一種逆螺旋傳動機構。輸入直線運動由油缸活塞運動實現(xiàn)，油缸活塞帶動一新型螺旋傳動機構作輸出擺動振動。
本論文進行了以下研究內容：(1) 方案設計。（2）對執(zhí)行機構的傳動原理、結構進行介紹。（3）對機構設計計算，并完成軸承及其軸承座的設計及計算選型。（4）應用大型建模軟件pro/e對各個零件進行了實體造型并且完成零件的建模裝配，生成機構的裝配模型。 (5)基于機構的裝配模型，對機構進行運動仿真模擬，生成機構的運動過程動畫文件。(6)對各個零件進行了受力分析以及載荷計算并應用有限元軟件ANSYS對運動機構中的關鍵零部件進行了有限元分析。(7)滾珠是機構中的關鍵零件，運動情況比較復雜，應用運動學分析原理對滾珠的運動規(guī)律進行了分析計算。 (8)應用赫茲彈性接觸理論，對滾珠進行接觸分析，并校核滾珠的接觸強度。


關鍵詞: 滾動螺旋傳動，有限元，振動，運動仿真












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 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 …1
1.1 引言 1
1.2 國內外研究現(xiàn)狀 .3
1.2.1國內外研究概況和發(fā)展趨勢 3
1.2.2技術背景及意義 .5
2總體方案設計及零部件的設計計算……………...…………………...6
2.1新型螺旋傳動機構的總體方案及其布局 .……………………………………6
2.2新型螺旋傳動機構的設計計算 …………………………………………….8
2.2.1滾珠運動分析 8
2.2.2滾珠接觸分析 ………..15
2.2.3新型螺旋傳動大功率大扭矩扭振振動臺各零部件尺寸的確定及其校核 ……24
2.2.4 結果分析 33
2.3軸承及其軸承座的設計選型和計算 ……………………………………….34
2.4本章小節(jié)……………………………………………………………...36
3 Pro/E軟件的三維實體建模及運動仿真 .37
3.1Pro/E建立新型螺旋傳動大功率大扭矩扭振振動臺機械及基礎系統(tǒng)，畫出所有零部件的三維實體模型并裝配 37
3.2新型螺旋傳動大功率大扭矩扭振振動臺運動仿真并生成三維運動動畫圖 41
3.3本章小節(jié) 45
4 ANSYS有限元分析 46
4.1.概述 46
4.2有限元基本理論 46
4.3新型螺旋傳動大功率大扭矩扭振振動臺載荷計算及有限元分析 49
4.3.1新型螺旋傳動大功率大扭矩扭振振動臺載荷計算 49
4.3.2新型螺旋傳動大功率大扭矩扭振振動臺有限元分析 50
4.4計算結果及分析 55
4.5本章小節(jié) 55
5 結論 56
致謝 57
參考文獻 58