汽车双离合式自动变速箱结构的设计毕业的设计.docx

学号密级汽车双离合式自动变速箱结构设计院（系）名称：专业名称：学生姓名：指导教师：2014年6月学号密级汽车双离合式自动变速箱结构设计Design of Double Clutch Type?Automatic Transmission?Structure学生姓名：所在学院：所在专业：指导教师：所在单位：论文提交日期：2014年6月12日论文答辩日期：2014年 6 月22日学位授予单位：摘要双离合式自动变速箱是新一代的自动变速器。它结合了液力机械自动变速器和电控机械自动变速器的优点，实现了动力换挡、减少了换挡时间、提高了换挡品质、极大地提高了汽车的舒适性和操纵性，已成为汽车变速器新的发展方向。双离合自动变速箱的结构设计对于变速箱换挡性能和制造成本、制造复杂程度的影响至关重要。本文主要展开了双离合式自动变速器的结构设计，主要进行了以下的工作：在分析了常见的双离合式自动变速箱的结构形式和工作原理基础上首先确定了干式双离合的双中间轴式自动变速器的总体方案。针对双中间轴式DCT的齿轮箱的传动比进行分配就算，确定齿轮轴系的结构，然后对双离合式自动变速器的箱体部分进行设计，最后对主要的零部件：齿轮轴、齿轮、轴承等进行计算校核，结果表明本文的结构设计满足强度要求，设计合理。本文所设计的干式双中间轴式自动变速器其具体设计过程和校核分析作为具体案例具有参考意义。关键词：双离合器自动变速器；干式双离合器；双中间轴式ABSTRACTDualclutch automatic gearbox is a new generation of automatic transmissions. It combines the advantages of hydromechanical automatic transmission and electronically controlled mechanical automatic transmission to achieve a power shift, reducing the shift time, improved shift quality, which greatly improves the cars comfort and maneuverability, has become a vehicle new direction transmission, and has broad market prospects. Structural design for the dual-clutch automatic transmission gearbox shift performance and manufacturing costs, manufacturing is crucial influence complexity.In this paper launched a design dual-clutch automatic transmission, mainly for the following tasks: the analysis of the basic structure and operating principle of the common dual-clutch automatic gearbox on first determine the twin countershaft dual dry clutch Overall program type automatic transmission. For dual-DCT gearbox intermediate shaft gear ratio allocated even to determine the structure of the gear shaft, and then on the housing portion of the dual-clutch automatic transmission design, the final major components: gear shafts, gears, bearings such as checking calculations, the results indicate that the structural design of this paper to meet the strength requirements, reasonable design.This article is designed dry dual countershaft type automatic transmission to their specific des