【摘要】：摘要：本文運(yùn)用齒輪嚙合原理和數(shù)值模擬方法對(duì)漸開(kāi)線直齒輪的修形展開(kāi)研究與分析。目的是探索最理想的齒輪修形效果,從而提高齒輪傳動(dòng)時(shí)的承載能力、降低振動(dòng)和噪音。 首先推導(dǎo)出直齒輪的齒廓修形和齒向修形的曲線方程,運(yùn)用Pro/E軟件建立了漸開(kāi)線直齒輪和修形齒輪的精確參數(shù)化模型。運(yùn)用此模型,只需要輸入齒輪的主要參數(shù)和修形參數(shù)便可以生成標(biāo)準(zhǔn)的齒輪模型,提高了修形齒輪的建模效率。 其次,借助ANSYS Workbench,將Pro/E齒輪模型導(dǎo)入有限元軟件中進(jìn)行修形齒輪的接觸力學(xué)數(shù)值實(shí)驗(yàn)。設(shè)定符合實(shí)際工況的邊界條件和約束載荷,對(duì)齒輪進(jìn)行瞬態(tài)動(dòng)力學(xué)分析,研究齒輪嚙合過(guò)程中的齒面接觸應(yīng)力變化情況。并運(yùn)用赫茲公式進(jìn)行理論分析,比較數(shù)值實(shí)驗(yàn)和理論分析兩者的差異,從而推斷數(shù)值實(shí)驗(yàn)的合理性。通過(guò)數(shù)值分析得到了齒輪嚙合過(guò)程的一些基本規(guī)律,為齒輪修形奠定了理論基礎(chǔ)。 本文分析比較了常用的齒輪修形方法,運(yùn)用有限元對(duì)齒廓修形齒輪進(jìn)行數(shù)值模擬。仿真結(jié)果表明Walker修形曲線較直線修形曲線具有更好的修形效果：同時(shí)得出了不同修形量對(duì)齒廓修形齒輪影響的規(guī)律。 通過(guò)數(shù)值實(shí)驗(yàn)分析發(fā)現(xiàn),軸承間的非對(duì)稱裝配會(huì)導(dǎo)致齒輪齒向載荷發(fā)生偏載,而現(xiàn)有的鼓形修形不能達(dá)到較好的修形效果。于是提出采用二次曲線和三次曲線來(lái)進(jìn)行齒向修形,通過(guò)對(duì)三種曲線的數(shù)值實(shí)驗(yàn)分析,結(jié)果表明兩種新曲線較鼓形曲線都有明顯的改善,其中三次曲線的修形效果最好。 采用Matlab編寫(xiě)了修形計(jì)算程序,此程序能夠快速計(jì)算出齒輪修形的最大修形量,大大提高了設(shè)計(jì)效率。
[Abstract]:Abstract: in this paper, the gear meshing principle and numerical simulation method are used to study and analyze the modification of involute spur gear. The aim of this paper is to explore the ideal gear shape modification effect so as to improve the bearing capacity of gear transmission and reduce vibration and noise. First, the curve equations of tooth profile modification and tooth modification of spur gears are derived, and the precise parameterized models of involute spur gears and modified gears are established by using Pro/E software. By using this model, the standard gear model can be generated only by inputting the main parameters and modification parameters of the gear, and the modeling efficiency of the modified gear can be improved. Secondly, the Pro/E gear model is introduced into the finite element software with ANSYS Workbench, to carry out the contact mechanics numerical experiment of the modified gear. The transient dynamic analysis of gear was carried out by setting the boundary conditions and constraining loads in accordance with the actual working conditions, and the change of tooth surface contact stress during gear meshing was studied. The difference between the numerical experiment and the theoretical analysis is compared with the Hertz formula, and the rationality of the numerical experiment is inferred. Some basic laws of gear meshing process are obtained by numerical analysis, which lays a theoretical foundation for gear shape modification. In this paper, the common gear modification methods are analyzed and compared, and the finite element method is used to simulate the gear profile modification. The simulation results show that the Walker profile correction curve has better modification effect than the straight line profile modification curve. At the same time, the law of the influence of different modification quantities on the profile modified gear is obtained. It is found by numerical experiments that the asymmetric assembly between bearings will lead to the bias load of gear teeth, but the existing drum modification can not achieve a better shape modification effect. Therefore, the conic curve and the cubic curve are proposed to modify the tooth profile. Through the numerical experiment analysis of the three curves, the results show that the two new curves are obviously improved compared with the drum curve, among which the cubic curve has the best shape modification effect. In this paper, Matlab is used to program the modification calculation program, which can quickly calculate the maximum modification of gear profile, and greatly improve the design efficiency.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TG61;TH132.417

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 汪強(qiáng) ,周錦進(jìn);齒輪修形技術(shù)及工藝的發(fā)展[J];電加工與模具;2001年05期

2 唐增寶，鐘毅芳，，陳久榮;修形齒輪的最佳修形量和修形長(zhǎng)度的確定[J];華中理工大學(xué)學(xué)報(bào)(社會(huì)科學(xué)版);1995年02期

3 楊廷力;葉新;王玉璞;錢臬鶴;;漸開(kāi)線高速齒輪的齒高修形(一)[J];齒輪;1982年03期

4 陶燕光;黎上威;馬憲本;�？饲�;;高速齒輪熱變形修形的試驗(yàn)研究[J];齒輪;1988年02期

5 謝海東,周照耀,夏偉,邱誠(chéng),張文;斜齒輪傳動(dòng)中嚙合沖擊數(shù)值研究[J];機(jī)械傳動(dòng);2005年03期

6 盛云,武寶林;齒輪傳動(dòng)中嚙合沖擊的計(jì)算分析[J];機(jī)械設(shè)計(jì);2005年07期

7 李國(guó)富;;低噪聲齒輪的創(chuàng)新設(shè)計(jì)與制造[J];洛陽(yáng)工業(yè)高等�？茖W(xué)校學(xué)報(bào);2007年02期

8 辛經(jīng)緯;王生澤;;齒輪修形及其實(shí)現(xiàn)方法研究[J];機(jī)械;2009年05期

9 李毅華;欒振輝;;國(guó)內(nèi)外傳動(dòng)機(jī)械學(xué)的現(xiàn)狀及發(fā)展趨勢(shì)[J];煤礦機(jī)械;2005年12期

10 吳勇軍;王建軍;;一種考慮齒輪副連續(xù)嚙合過(guò)程的接觸有限元?jiǎng)恿W(xué)分析方法[J];航空動(dòng)力學(xué)報(bào);2013年05期

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