摘要：箱體的設計是整個拖拉機全自動無級變速箱設計中非常重要的部分。論文以變速箱的總體傳動方案為基礎，進行了箱體的結構設計，在Pro/E上完成了箱體的三維建模。使用有限元分析軟件對箱體進行了強度分析，并且在分析的基礎上進行了結構優化。完成了主要零件的裝配并導出二維工程圖。
關鍵詞：三維建模，變速箱，拖拉機，有限元分析
The case design of full automatic continuously variable transmission
Student majoring in Machine Design & Manufacturing and Their Automation
Abstract：The case design is a very important part of the design of full automatic continuously variable transmission. Based on the overall transmission scheme, this paper made a physical design of the case, and established the 3D modeling of the case on Pro/E. The case was made a strength analysis by using finite element analysis software. The assembly of main components was finished and the two-dimensional drawings were exported.
Key words: 3D Modeling；transmission；tractor；Finite element analysis
