車輛工程專業(yè)畢業(yè)論文，論文編號(hào):JX942  論文字?jǐn)?shù):6110.頁數(shù):31

摘  要
 本課題從實(shí)際生產(chǎn)中的一些冶金重載齒輪齒面發(fā)生嚴(yán)重塑性變形中得到啟發(fā)，認(rèn)為必然存在最適合齒輪接觸強(qiáng)度和彎曲強(qiáng)度的齒形。經(jīng)縝密分析和深入研究，初步認(rèn)為這是等共軛曲率高階接觸的齒形，并分析了這種齒形的形成原理。本文通過對(duì)二階曲線和四階曲線的比較分析，并結(jié)合契貝謝夫多項(xiàng)式進(jìn)行計(jì)算，分析高階接觸齒形的接觸應(yīng)力,導(dǎo)出了計(jì)算公式。說明在高階接觸情況下有兩個(gè)應(yīng)力極值點(diǎn)，并導(dǎo)出了極值點(diǎn)位置和接觸應(yīng)力極值的公式。最后對(duì)一對(duì)共軛曲率的嚙合齒廓作了具體接觸應(yīng)力計(jì)算。
 
關(guān)鍵詞：齒輪   應(yīng)力   高階接觸

Abstract
 Inspired from some gears with heavy power transmission in practical usage after serious plastic deformation in metallurgical industry, we believe that there must existed some kind of gear profile which is most suitable in both the contact and bending fatigue strength. From careful analysis and deep going investigation, we think that it is the profile of equal conjugate curvature with high order of contact, and analyzed the forming principle of this kind of profile.Based on the second curve and comparative analysis of fourth order curves, combined with Chebyshev polynomial terms of higher order contact with tooth contact stress,formula derived.Note high exposure in the case of two extreme point of stress and extreme positions and the derived extreme contact stress formula.Finally, a pair of conjugate gear tooth profile curvature provides specific contact stress calculation.
Key word:  gear  stress  contact of high-level
目 錄
中文摘要 i
英文摘要 ii
目錄 iii
第一章  緒論 1
1.1  概述 1
1.2  國內(nèi)外的情況 2
第二章  高階齒面嚙合間隙分析 4
第三章  契貝謝夫多項(xiàng)式計(jì)算 6
3.1 契貝謝夫正交多項(xiàng)式定義 6
3.2 用契貝謝夫多項(xiàng)式求接觸應(yīng)力 6
3.3 相接觸曲面用契貝謝夫多項(xiàng)式展開 7
3.4  壓力分布用契貝謝夫多項(xiàng)式表示 8
3.5 總壓力 9
3.6 與赫茲接觸應(yīng)力的對(duì)照 9
3.7 高階接觸 10
3.8 壓力分布用契貝謝夫多項(xiàng) 11
3.9 選取材料進(jìn)行初步 13
第四章  VB程序繪制二階與四階曲  14
第五章  二階與四階曲線系數(shù)關(guān)系及應(yīng)力分布 18
第六章  相似法畫齒形及其接觸齒面應(yīng)力分析 22
     6.1 用相似法在范成儀上畫出齒輪 22
     6.2 接觸齒面應(yīng)力 22
參考文獻(xiàn) 25
致謝 26
附件1  一對(duì)嚙合齒廓的坐標(biāo)圖 27