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黑龍江工程學院本科生畢業(yè)設計
摘 要
變速器是汽車傳動系的重要組成部分，其發(fā)展無疑代表著汽車工業(yè)的發(fā)展，它的設計也是汽車設計的一個重要部分。本設計的任務是設計長城賽影轎車的二軸式五檔手動變速器。
因為變速箱在低檔工作時作用有較大的力，所以一般變速箱的低檔都布置靠近軸的后支承處，然后按照從低檔到高檔順序布置各檔位齒輪。這樣做既能使軸有足夠大的剛性，又能保證裝配容易。變速箱整體結構剛性與軸和殼體的結構有關系。一般通過控制軸的長度即控制檔數，來保證變速箱有足夠的剛性。
本設計從后驅動變速器的總體方案開始，對傳動系統(tǒng)的方案進行分析，檔位的布置形式進行研究分析，變速器基本參數的選擇，零部件結構方案的分析確定，同步器、操縱機構及箱體的設計選用。根據所配車型，結合上述參數，再結合汽車設計、汽車理論、機械設計等相關知識，計算出相關的變速器參數并論證設計的合理性。而后用Auto CAD軟件畫出變速器的裝配圖和零件圖，并用Pro/E軟件進行三維建模，用ANSYS軟件對關鍵零件進行有限元分析，利用三維平臺提高本設計的可靠性。
關鍵字：變速器；二軸式；結構設計；三維建模；有限元分析
ABSTRACT
Transmission is vehicle drivetrain is important constituent, its development will undoubtedly represents the automobile industry, its design is an important part of automotive design. This design task is to design the Great Wall "shadow cars in five second shaft manual shift transmission.
While working in cheap because gearbox action has larger force, so average gearbox of tin are decorated near the axis, then according to supporting place after from low to high order each gear decorate gears. To do so we can make axis is big enough, and can guarantee the rigid assembly easy. Gearbox overall structure rigidity with axis and shell structure are related. The length of the general through the control axis control file number, that there is enough to ensure transmission rigidity.
Notebook design from the overall scheme of the drive transmission of transmission system began, analysis, gear scheme decorate a form of research and analysis, the transmission of basic parameters selection, parts structure project analysis to identify, synchronizer, manipulate the institutions and cabinet design to choose. According to the selection of vehicles, a combination of these parameters, combined with car design, automobile theory, mechanical design and related knowledge, compute related transmission parameters and demonstrates the rationality of the design. And then use Auto CAD software draw the transmission, and the assembly and parts graph Pro/E software ANSYS software, 3d modeling, use of key parts, using three-dimensional finite element analysis of the reliability of the design of the platform improve this.
Keywords : transmission; two shaft type; structure design; 3d modeling;finite element analysis
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