毕业设计（论文）-AMT自动变速器离合器执行机构设计.doc

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AMT自动变速器离合器执行机构设计
摘要
机械自动变速器(AMT)与液力自动变速器(AT)相比,具有结构简单、体积小、成本低等优点;与传统的机械变速器(MT)相比有能耗低、反应快等优点;是一种具有广阔前景的产品。
本文主要是AMT离合器执行机构的机械结构设计。
首先介绍了AMT的原理和发展情况。接着,根据原有离合器的结构和要求,提出了三种可行的设计方案:齿轮—螺旋传动、蜗杆传动和谐波减速传动。通过比较,选择较有优势的蜗杆传动方案作为设计的总体方案。然后计算相关参数,选取直流电机、传感器等。最后对总体结构和零部件进行详细设计,完成总体装配。
此自动离合器执行机构设计具有结构简单,紧凑,加工方便,价格低廉等特点。
关键词:执行机构,AMT,离合器
DESIGN OF AMT CLUTCH ACTUATING MECHANISM
ABSTRACT
parison with hydraulic Automatic Transmission(AT), Automatic Mechanical Transmission(AMT) has advantages of simple structure, much lower cost and smaller size. Mean while it possesses characteristics of lower oil consumption and rapid response, superior than the traditional manual transmission(MT). And so it is a kind of promising product.
In the dissertation, much effort has been made on the mechanical structure design of clutch actuating mechanism.
First, introduce the principle and development of AMT. And next, three feasible designs are proposed according to the structure and requirement of the clutch. Those are gear-screw-driven, worm-driven, and Harmonic-driven. parison, the petitive design was the worm-driven, which was determined as the last design of the clutch. Following, calculating and selecting DC-motor, sensor etc. The last, to design the overall structure and parts in detail., plete the final assembly.
The design of the clutch actuating mechanism has the characters of simple-structure, compaction, simple-machining, low-price, and so on..
KEY WORDS:actuating mechanism AMT clutch
目录
第1章绪论 1
AMT自动变速技术的发展与趋势 1
AMT的控制原理 1
AMT自动变速系统发展 2
3
自动离合器的构成和基本原理 3
4
5
第2章总体方案确定 7
离合器执行机构设计要求 7
离合器执行机构设计参数要求 7
离合器终端传动要求 8
离合器执行机构传动方案及其初步计算 9
方案一:齿轮—螺旋传动 9
方案二:蜗杆传动 12
方案三:谐波减速器传动 14
方案的确定 16
第3章计算及设计 18
前离合器执行机构设计计算 18
总体计算 18
电机的选择 19
蜗杆涡轮设计 21
涡轮轴的设计 27
曲柄 27
执行杆 28
轴承的选择 29