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差速器外殼加工工藝工裝設(shè)計(jì)
? 學(xué)生姓名：曾威 班級：0781052
指導(dǎo)老師：王細(xì)洋
摘要：差速器是驅(qū)動轎的主件。差速器的作用就是在向兩邊半軸傳遞動力的同時(shí)，允許兩邊半軸以不同的轉(zhuǎn)速旋轉(zhuǎn)，滿足兩邊車輪盡可能以純滾動的形式作不等距行駛，減少輪胎與地面的摩擦。普通差速器由行星齒輪、差速器殼（行星輪架）、半軸齒輪等零件組成。發(fā)動機(jī)的動力經(jīng)傳動軸進(jìn)入差速器，直接驅(qū)動差速器殼帶動行星輪軸，再由行星輪帶動左、右兩條半軸，分別驅(qū)動左、右車輪。
本文主要是介紹了差速器外殼的加工工藝及加工中所需要的專用鏜床夾具的設(shè)計(jì)。首先對零件進(jìn)行了工藝性分析了解各加工面所需要打到的加工精度，確定各個(gè)加工面的加工余量。制定合理的能夠滿足加工需要的工藝方案。為了保證零件的加工精度需要進(jìn)行基準(zhǔn)面的選擇和對零件的定位，并遵循一定基本原則，并進(jìn)行定位誤差的分析。加工中還涉及到各種加床夾具的設(shè)計(jì)。本文主要介紹的是鏜床專用工藝方案的設(shè)計(jì)，主要有夾具的定位，零件與零件的連接、夾具體與機(jī)床的連接和誤差分析。
關(guān)鍵詞：加工工藝 工藝方案 夾具
指導(dǎo)老師簽名：
Differential case processing
Student:Zeng Wei Class:0781052
Supervisor:Wang Xiyang
Abstract:The main differential is the driving car parts. Differential role is to transmit power to the axle on both sides at the same time, allowing both sides of the axle rotating at different speeds to meet the both sides of the wheel as far as possible in the form of pure rolling road of no offset, reducing the friction between tire and ground. By the ordinary differential gear, differential case (planetary gear frame), side gears and other parts. The power of the engine drive shaft into the differential, direct-drive planetary drive axle differential case, then the planetary wheel drive left, right, two axle, respectively, drive left and right wheels.
?? This article is to introduce a differential case processing technology and processing needs of special boring machine in the fixture design. First of all parts of the process of analysis needed to understand the processing of surface machining accuracy to hit, to determine the allowance of each machined surface. To develop a reasonable process to meet the processing needs of the program. To ensure the machining accuracy is required datum selection and positioning of parts, and follow certain basic principles, and the positioning error analysis. Processing also involves a variety of extra fixture design. This paper describes the design of special fixture boring, there are fixture positioning, parts and components of the connection, the connection with the machine specific folder and error analysis.
Keywords:
Signature of supervisor：
目錄
1.零件的分析 2
1.1 零件的作用 2
1.2 零件的工藝分析 2
2. 工藝規(guī)程設(shè)計(jì) 3
2.1 毛坯的制造形式 3
2.2 基準(zhǔn)面的選擇 3
2.2.1 粗基準(zhǔn)的選擇 3
2.2.2 精基準(zhǔn)的選擇 4
2.3 制訂工藝路線 4
2.3.1. 工藝線路方案一 4
2.3.2 工藝路線方案二 5
2.3.3. 工藝方案的比較與分析 5
2.4 機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 6
2.4.1 外圓表面 6
2.4.2 內(nèi)圓表面 8
2.4.3 端面 10
2.4.4 凸臺孔系 10
3. 夾具設(shè)計(jì) 11
3.1 問題的提出 25
3.2.1定位基準(zhǔn)的選擇 25
結(jié) 論 27
參考文獻(xiàn) 28
附錄： 30