本文關(guān)鍵詞： 傳動(dòng)系統(tǒng) 參數(shù)設(shè)計(jì) 載荷分配 程序?qū)崿F(xiàn) Romax Designer　出處：《重慶理工大學(xué)》2016年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：驅(qū)動(dòng)橋是汽車(chē)傳動(dòng)系的重要組成部分,需要承受來(lái)自車(chē)身及路面的復(fù)雜作用力與沖擊載荷,對(duì)汽車(chē)的整體性能好壞起到至關(guān)重要的作用。隨著現(xiàn)代汽車(chē)個(gè)性化發(fā)展的需要,對(duì)驅(qū)動(dòng)橋傳動(dòng)系統(tǒng)的設(shè)計(jì)要求越來(lái)越高。由于缺乏設(shè)計(jì)方法的指導(dǎo),國(guó)內(nèi)一些企業(yè)新品開(kāi)發(fā)多以國(guó)外類(lèi)似的驅(qū)動(dòng)橋產(chǎn)品為參照,采用類(lèi)比設(shè)計(jì)的方法,通過(guò)修改一些主要尺寸進(jìn)行逆向開(kāi)發(fā)。產(chǎn)品設(shè)計(jì)沒(méi)有方便的計(jì)算工具,諸如查閱圖表、計(jì)算校核這些較為繁瑣的常規(guī)工作大多數(shù)需要設(shè)計(jì)者一步步手動(dòng)完成,這樣不僅容易出錯(cuò)同時(shí)也極為耗費(fèi)時(shí)間。本文根據(jù)驅(qū)動(dòng)橋的結(jié)構(gòu)特點(diǎn),總結(jié)出驅(qū)動(dòng)橋傳動(dòng)系統(tǒng)的設(shè)計(jì)方法并制定了各部件的設(shè)計(jì)流程,給出傳動(dòng)零件參數(shù)設(shè)計(jì)與校核方法,并將其編寫(xiě)為計(jì)算機(jī)程序,為驅(qū)動(dòng)橋傳動(dòng)系統(tǒng)的設(shè)計(jì)提供便捷的工具,縮短新產(chǎn)品的開(kāi)發(fā)周期。本文完成的主要研究工作有:1.總結(jié)出驅(qū)動(dòng)橋傳動(dòng)系統(tǒng)各部件的設(shè)計(jì)順序,介紹說(shuō)明各傳動(dòng)部件不同結(jié)構(gòu)型式的適用范圍,繪制出各傳動(dòng)部件詳細(xì)設(shè)計(jì)的設(shè)計(jì)流程圖,為設(shè)計(jì)人員設(shè)計(jì)驅(qū)動(dòng)橋傳動(dòng)系統(tǒng)提供了指導(dǎo)。2.敘述了傳動(dòng)系各部件基本參數(shù)的初選方法,給出了計(jì)算傳動(dòng)齒輪詳細(xì)幾何參數(shù)的計(jì)算方法。按照動(dòng)力流的順序研究了汽車(chē)動(dòng)力在直行及轉(zhuǎn)向兩種工況下的載荷分配方法,得到了傳動(dòng)系統(tǒng)各零件所受負(fù)載大小的計(jì)算方法,參照統(tǒng)一標(biāo)準(zhǔn)對(duì)各傳動(dòng)系錐齒輪及直齒輪強(qiáng)度的應(yīng)力計(jì)算與評(píng)價(jià)方法進(jìn)行了說(shuō)明,實(shí)現(xiàn)了汽車(chē)兩種工況下驅(qū)動(dòng)橋傳動(dòng)齒輪的準(zhǔn)確校核。3.利用Plot Digitizer及MATLAB軟件,將需要手動(dòng)讀數(shù)的圖形曲線擬合出與零件幾何參數(shù)相關(guān)聯(lián)的曲線函數(shù),采用C++語(yǔ)言將擬合得到的函數(shù)以及傳動(dòng)零件尺寸計(jì)算與校核公式編輯為計(jì)算機(jī)程序。使傳動(dòng)系零部件幾何參數(shù)設(shè)計(jì)與校核的計(jì)算過(guò)程通過(guò)程序?qū)崿F(xiàn),并可實(shí)現(xiàn)離散數(shù)據(jù)或設(shè)計(jì)說(shuō)明的便捷查閱。4.給出傳動(dòng)齒輪基本參數(shù)后,利用所編寫(xiě)的計(jì)算機(jī)程序完成了一款汽車(chē)驅(qū)動(dòng)橋傳動(dòng)齒輪的詳細(xì)參數(shù)設(shè)計(jì),并對(duì)兩種工況下的齒輪應(yīng)力進(jìn)行了計(jì)算。使用Romax Designer軟件對(duì)設(shè)計(jì)模型進(jìn)行了直行及轉(zhuǎn)向兩種工況的載荷分析,分析結(jié)果與通過(guò)程序計(jì)算的結(jié)果相對(duì)比,誤差在允許范圍內(nèi)。最終表明,根據(jù)本文設(shè)計(jì)方法及程序可實(shí)現(xiàn)對(duì)驅(qū)動(dòng)橋傳動(dòng)零件的快速詳細(xì)設(shè)計(jì),并能得到可靠的校核結(jié)果。
[Abstract]:The drive axle is an important part of the automobile transmission system, which needs to bear the complex force and impact load from the body and the road surface. It plays an important role in the whole performance of automobile. With the development of modern automobile, the design requirement of drive axle transmission system is more and more high. Because of the lack of guidance of design method. Some domestic enterprises take the similar drive axle products as reference, adopt the method of analogical design, and reverse develop by modifying some main dimensions. There is no convenient calculation tool for product design. Most of the tedious routine tasks such as checking charts and calculating and checking require designers to do it manually step by step, which is not only easy to make mistakes but also extremely time-consuming. This paper is based on the structural characteristics of the drive axle. The design method of drive axle transmission system is summarized and the design flow of each part is worked out. The parameter design and checking method of transmission part is given, and it is written as a computer program. It provides convenient tools for the design of drive axle transmission system and shortens the development cycle of new products. The main research work accomplished in this paper is: 1.The design sequence of drive axle transmission system components is summarized. This paper introduces the scope of application of different structural types of transmission components, and draws out the design flow chart of the detailed design of each transmission component. This paper provides guidance for designers to design drive axle transmission system. 2. The primary selection method of basic parameters of each part of transmission system is described. The calculation method of the detailed geometric parameters of the transmission gear is given. The load distribution method of the automobile power under both direct and steering conditions is studied according to the order of the power flow. The calculation method of the load on each part of the transmission system is obtained, and the stress calculation and evaluation method of the bevel gear and the spur gear of the transmission system are explained according to the unified standard. The accurate checking of drive axle transmission gear is realized under two working conditions. 3. Plot Digitizer and MATLAB software are used. The curve functions associated with the geometric parameters of the parts are fitted by the graphical curves which require manual reading. The function of fitting and the formula of dimension calculation and checking of transmission parts are edited into computer program by C language, and the calculation process of geometric parameter design and checking of transmission system parts is realized by program. And the discrete data or design instructions can be easily consulted. 4. After giving the basic parameters of the transmission gear, a detailed parameter design of the drive gear of the automobile drive axle is completed by using the computer program. The gear stress under two working conditions is calculated, and the load analysis of the design model is carried out by using Romax Designer software under both direct and steering conditions. Compared with the results calculated by the program, the error is within the allowable range. Finally, it shows that according to the design method and program of this paper, the fast and detailed design of drive axle transmission parts can be realized. A reliable check result can be obtained.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：U463.218

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