汽車轉(zhuǎn)向器畢業(yè)設(shè)計(jì)

摘  要
汽車轉(zhuǎn)向器是汽車的重要組成部分，也是決定汽車主動(dòng)安全性的關(guān)鍵總成，它的質(zhì)量嚴(yán)重影響汽車的操縱穩(wěn)定性。隨著汽車工業(yè)的發(fā)展，汽車轉(zhuǎn)向器也在不斷的得到改進(jìn)，雖然電子轉(zhuǎn)向器已開(kāi)始應(yīng)用，但機(jī)械式轉(zhuǎn)向器仍然廣泛地被世界各國(guó)汽車及汽車零部件生產(chǎn)廠商所采用。而在機(jī)械式轉(zhuǎn)向器中，循環(huán)球齒條-齒扇式轉(zhuǎn)向器由于其自身的特點(diǎn)被廣泛應(yīng)用于各級(jí)各類汽車上。本文選擇GX1608A型循環(huán)球齒條-齒扇式轉(zhuǎn)向器作為研究課題，其主要內(nèi)容有：汽車轉(zhuǎn)向器的組成分類；轉(zhuǎn)向器總成方案分析及其數(shù)據(jù)確定和轉(zhuǎn)向器的設(shè)計(jì)過(guò)程。
這種轉(zhuǎn)向器的優(yōu)點(diǎn)是，操縱輕便，磨損小，壽命長(zhǎng)。缺點(diǎn)是結(jié)構(gòu)復(fù)雜，成本高，轉(zhuǎn)向靈敏度不如齒輪齒條式。因此逐漸被齒輪齒條式取代。但隨著動(dòng)力轉(zhuǎn)向的應(yīng)用，循環(huán)球式轉(zhuǎn)向器近年來(lái)又得到廣泛使用。
關(guān)鍵詞；轉(zhuǎn)向器 操縱穩(wěn)定性 循環(huán)球齒條-齒扇式轉(zhuǎn)向器

Abstract
Gear cars an important component of the initiative is decided automobile safety of the key assembly, It seriously affected the quality of the vehicle handling and stability. Along with the development of the auto industry, automobile steering gear is continuously improved, although the electronic steering gear has begun to use But mechanical steering gear is still widely been world motor vehicles and parts manufacturers adopted. And the mechanical steering gear, Rack cycle ball-type steering gear tooth fans as its own characteristics has been widely used in various types vehicles. The graduation design options GX1608A cycle gear ball-type steering gear rack as a research topic, Its main contents are : automotive steering gear components classification; assembly was to program analysis and data to identify and steering gear design process.
The advantage of such steering gear, and manipulating light, wear and tear, long life. The disadvantage is that the structure is complicated and costly, than steering rack and pinion sensitivity. Therefore gradually being replaced by rack and pinion. However, with the power steering applications, the ball-type steering gear cycle and are widely used in recent years.
Keywords； Diverter   Ball handling and stability   Cycle rack-type steering gear diverter

目  錄
摘  要 I
Abstract II
1緒論 1
2汽車轉(zhuǎn)向系的組成及分類 3
2.1汽車轉(zhuǎn)向系的類型和組成 3
2.1.1 機(jī)械式轉(zhuǎn)向系 6
2.1.2 動(dòng)力轉(zhuǎn)向器 7
2.2 轉(zhuǎn)向系主要性能參數(shù) 8
2.2.1轉(zhuǎn)向器的效率 8
2.2.2傳動(dòng)比的變化特性 10
2.2.3轉(zhuǎn)向盤自由行程 13
2.3 轉(zhuǎn)向操縱機(jī)構(gòu)及轉(zhuǎn)向傳動(dòng)機(jī)構(gòu) 13
2.3.1轉(zhuǎn)向操縱機(jī)構(gòu) 13
2.3.2轉(zhuǎn)向傳動(dòng)機(jī)構(gòu) 14
3轉(zhuǎn)向器總成方案分析 15
3.1轉(zhuǎn)向器設(shè)計(jì)要求 15
3.2轉(zhuǎn)向器總成方案設(shè)計(jì) 16
4循環(huán)球式轉(zhuǎn)向器主要尺寸參數(shù)的選擇 19
5 轉(zhuǎn)向器輸出力矩的確定 23
6 軸的設(shè)計(jì)計(jì)算及校核 24
6.1 轉(zhuǎn)向搖臂軸（即齒形齒扇軸）的設(shè)計(jì)計(jì)算 24
6.1.1材料的選擇 24
6.1.2結(jié)構(gòu)設(shè)計(jì) 24
6.1.3軸的設(shè)計(jì)計(jì)算 24
6.2 螺桿軸設(shè)計(jì)計(jì)算及主要零件的校核 28
6.2.1材料選擇 28
6.2.2結(jié)構(gòu)設(shè)計(jì) 28
6.2.3軸的設(shè)計(jì)計(jì)算 29
6.2.4鋼球與滾道之間的接觸應(yīng)力校核 31
參考文獻(xiàn) 33
致 謝 34
附錄 36