本文選題：車門玻璃升降系統(tǒng)　切入點(diǎn)：升降阻力　出處：《江西理工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：在轎車車門組成系統(tǒng)中,車門玻璃升降系統(tǒng)是其重要的部分之一,為汽車的密閉性與安全性提供一定的保障,然而轎車車門玻璃升降器系統(tǒng)的故障率相對較高,嚴(yán)重影響汽車的整體品質(zhì)。其主要表現(xiàn)為升降過程中玻璃的卡滯;玻璃在X方向傾斜升降,與導(dǎo)槽密封條底部接觸;升降過程的不平穩(wěn),嚴(yán)重時(shí)會(huì)產(chǎn)生較為尖銳的噪聲。由于升降過程中主要為玻璃與密封條的接觸,其產(chǎn)生的問題的主要原因:裝配偏差過大而引起的導(dǎo)致玻璃與密封條的過度接觸,進(jìn)而產(chǎn)生較大升降阻力。針對這些問題,對實(shí)際裝配過程中產(chǎn)生的偏差及其產(chǎn)生的機(jī)理進(jìn)行分析,并在此基礎(chǔ)上,采用有限軟件對密封條的壓縮特性進(jìn)行有限仿真分析,同時(shí)建立尺寸偏差與升降阻力的數(shù)學(xué)模型,運(yùn)用MATLAB軟件對其進(jìn)行求解分析,得到玻璃導(dǎo)槽、內(nèi)外門板等不同裝配偏差下升降阻力的變化曲線,并對其影響進(jìn)行研究。本文旨在對車門玻璃升降系統(tǒng)各部件的偏差及裝配偏差的設(shè)計(jì)提供依據(jù),提高玻璃升降系統(tǒng)的運(yùn)行的穩(wěn)定性及其壽命。本論文的主要研究內(nèi)容如下:(1)對車門玻璃的受力狀況進(jìn)行分析,采用有限元的方法構(gòu)建玻璃受力的數(shù)學(xué)模型,可知腰部水切密封條與導(dǎo)槽密封條的摩擦力是玻璃上升的主要阻力,二者的裝配偏差對其影響較大。同時(shí)采用有限元軟件對導(dǎo)槽密封條和腰部水切密封條的壓縮特性進(jìn)行研究分析。在此基礎(chǔ)上,運(yùn)用MATLAB對數(shù)學(xué)模型進(jìn)行求解,得到玻璃上升過程中受到的力與力矩的變化特性。(2)從工藝與玻璃裝配過程的角度對玻璃導(dǎo)槽的偏差形成機(jī)理進(jìn)行分析,得到導(dǎo)槽裝配偏差的組成及其相關(guān)的影響因素。采用有限元與蒙特卡洛模擬公差的的方法,對導(dǎo)槽、玻璃及導(dǎo)槽密封條三者的裝配尺寸鏈進(jìn)行分析,得到相關(guān)尺寸與升降阻力的關(guān)系,同時(shí)對該尺寸鏈的公差進(jìn)行重新設(shè)計(jì)。導(dǎo)槽在X、Y方向的裝配偏差對升降阻力的影響進(jìn)行研究,在X方向,玻璃與導(dǎo)槽密封條底部非接觸,在裝配時(shí)保持2mm的尺寸可以提高裝配成功率,同時(shí)保證玻璃可以穩(wěn)定上升;在Y方向,得到偏移角β與偏移點(diǎn)φp對升降阻力的變化曲線。(3)從工藝的角度對玻璃與內(nèi)外板之間的偏差形成機(jī)理進(jìn)行分析,得到裝配偏差的組成及其相關(guān)的影響因素。采用有限元的方法對不同封閉環(huán)下的玻璃與水切密封條的尺寸鏈與升降阻力構(gòu)建的數(shù)學(xué)模型進(jìn)行求解,得到尺寸鏈與升降阻力特性的關(guān)系曲線,并對實(shí)際偏差裝配過程中升降阻力的變化進(jìn)行比較分析,結(jié)果表明:采用內(nèi)間距作為封閉環(huán)與外間距作為封閉環(huán)的方法時(shí),裝配偏差在一定范圍內(nèi),采用前者需要嚴(yán)格控制質(zhì)量,摩擦阻力較小,效果較好,摩擦阻力因偏差的變化而引起的波動(dòng)范圍較小,相對于前者,后者可以采用比較寬松的偏差,降低質(zhì)量要求,對摩擦阻力有一定的波動(dòng)。(4)采用玻璃升降器專用實(shí)時(shí)測試設(shè)備對實(shí)車進(jìn)行實(shí)驗(yàn)分析,對車的前后門在Y方向的偏差進(jìn)行實(shí)車測試,得到不同偏差與升降阻力的關(guān)系曲線,結(jié)果表明:右前門對于面差變化不敏感,而右后門隨著面差增大(即車門外凸),升力減小。
[Abstract]:In the car door system, door glass lifter is one of the important part, provide some protection for the car tightness and safety, but the car door glass lifter system failure rate is relatively high, seriously affect the overall quality of the car. The main performance for the card in the lifting process of glass; glass in the X direction of tilt and lifting, seal the bottom contact; the lifting process of instability, which would cause a sharp noise. Because the main glass sealing strip and contact the lifting process, the main causes of the problem: the assembly deviation caused by excessive lead to excessive contact glass and a sealing strip then, have a greater lifting resistance. To solve these problems, the mechanism of deviation in actual assembly process and its analysis, and on this basis, using the finite software of the seal The compression characteristics of CO simulation analysis, and establish the mathematical model of size deviation and lifting resistance, and solved with MATLAB software to carry on the analysis, to obtain the glass guide groove, inside and outside the door, lifting resistance curves of different assembly deviation, and its influence on the research. The purpose of this paper is to provide the basis for the design and assembly of various components of deviation deviation the door glass lifting system, improve the stability of the glass lifting system of operation and service life. The main research contents of this thesis are as follows: (1) on the stress status of the door glass is analyzed, using finite element method to build mathematical model of glass stress, the water cut waist seal and guide friction seal tank is the main resistance of glass increases, the assembly deviation of the two great influence on it. At the same time by using the finite element software of water seal and waist guide strip compression seal cutting. Studied in this paper. On this basis, using MATLAB to solve the mathematical model, get the characteristics of force and moment by the glass rising process. (2) the deviation of guide groove on glass and glass from the process of the assembly process of formation mechanism analysis, obtained factors guide the assembly deviation and its impact by using the finite element method. With Monte Carlo simulation of tolerance to guide the assembly dimension chain glass and seal three through the analysis of the relationship between size and the lifting resistance, while the dimension chain tolerance redesign. Guide in X, to study the effects of Y assembly. The direction of lifting resistance, in the X direction, the glass and the seal at the bottom of non-contact, keep the size of the 2mm in the assembly can improve the success rate of assembly, while ensuring stable glass can be increased; in the Y direction, partial The change curve of the lifting resistance shift angle and offset point beta Phi P. (3) the deviation between the glass and the inner and outer plate formation mechanism is analyzed from the angle of technology factors get the assembly deviation and its impact. The mathematical model is solved by using the finite element method with a glass of water on the sealing ring under different cut size chain and lifting resistance seal construction, get the relation curve of dimension chain and lift drag characteristics, analysis and comparison of changes of resistance in the assembly process of the actual deviation results showed that: the inner ring and the outer space as close spacing as a method of closed loop, assembling deviation in a certain range. The former requires strict quality control, good effect, friction is low, the narrow range of friction due to the deviation caused by changes compared with the former, the latter can be used to compare loose deviation, Reduce the quality requirements, have certain fluctuations on the frictional resistance. (4) using glass lifter special real-time test equipment experimental analysis of vehicle, real vehicle test on the car front door in the Y direction deviation, relation curves of different deviation and lifting resistance, the results showed that: the right front door for the face not sensitive to changes, while the right rear door with surface difference increases (i.e., the lift car door convex) decreases.

【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：U463.834

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