摘要
我的毕业论文的题目是基于solidworks发动机箱体工艺路线拟定及钻床夹具设计发动机箱体是机器的基本零件，它将机器和发动机中的轴、套、齿轮等有关零件连接成为一个整体
结合所学专业的理论和实践知识，编写设计处一套机械加工工艺规程和工装夹具。本此设计有工作量大、专业知识范围广、要求高等特点，不同于前面所做的课程设计。对我们毕业生来讲，是对我们所学专业知识的一次重大考验，也是对我们参加工作之前的很好的历练。
说明书对零件功用分析、零件的加工工艺过程、夹具工艺设计作了比较系统、完整的分析和论证。对工艺规程的设计作了详细的说明，并制定了合理的加工工艺路线。对关键工序的加工余量、工序尺寸、工序公差、切削用量进行了设计分析，保证整个工艺过程的完整。最后，对夹具精度也进行了校核计算。
关键词： 加工质量； 加工工艺； 夹具； 工序； 加工剩余数量； 测量
Abstract
The topic of my thesis is the design of machining technics regulatious and appropriative clamp of the box body of engine .The box of engine is the basic spare of machine,it conecs the staik,set,wheel gear…etc of engine to the whole.And accurate position to transfer torque or complete prescriptive movement.The machining quality of the box body of engine will influence the performance,precision an life of machine.
According to the plan and didactical brief made by machine manufacturing craft profession committee,this design have mainly compiled and designed teachining technics regulations and appropriative clamp using professional theory and practical knowledge.This design is not only a great chanllenge,but also a good exercise for our graduate.It has enhanced our lever of speciality,at the same time,it also has cultived our team sprint.
The design mainly introduces the spare parts craft process,tongs technological design to make comparison system,analysis and argumen integrity.Design craft regulations to make expation,and establishment reasonable of process craft route.In this design,I have analysed and calculated some key working proces,which include the remaining quantity of process,the measure of working procedure procedure the tolerance of working procedure techics cards.Whatmore in the end ,I have designed a appropriative
clamp proof-tested its precision to ensure the quality of workpiece.
Key word: machining quality; the techics of machining; clamp; working procedure; the remaining quantity of maching; the measure of working procedure
目 录
第一章 绪论 ...................................... 1 1.1 课题研究的意义及现状 .......................... 1 1.1.1 发动机的工作原理 ............................ 1 1.1.2 发动机的结构 .............................. 1 1.1.2 课题研究的现状及展望 ...................... 2 1.2 论文主要研究内容 .............................. 2 第二章 发动机箱体工艺设计 ........................ 3 2.1箱体的分析 .................................... 3 2.1.1箱体的功用分析 ............................ 3 2.1.2计算生产纲领 确定生产类型 ................. 3 2.1.3箱体结构和功用的分析 ...................... 4 2.1.4箱体的技术分析 ............................ 4 2.1.5箱体的材料分析 ............................ 5 2.2发动机箱体毛坯的设计 .......................... 6 2.2.1确定毛坯种类及加工方法的选择 .............. 6 2.2.2毛坯的工艺分析及要求 ...................... 7 2.2.3毛坯余量和公差的确定 ...................... 9 2.3工艺路线设计 .................................. 9 2.3.1零件图的工艺分析 .......................... 11
2.3.2加工方法的选择 ............................ 11 2.3.3箱体的材料及热处理 ........................ 11 2.3.4阶段的划分 ................................ 12 2.3.5工序的集中与分散 .......................... 12 2.3.6基准的选择 ................................ 13 2.3.7 拟定发动机箱体的工艺路线 .................. 13 2.4 加工设备及工艺装备的选择 ..................... 15 2.5 加工工序设计 ................................. 16 第三章 钻床专用夹具设计 ......................... 24 3.1问题的提出 ................................... 24 3.2机床夹具的分类 ............................... 24 3.2.1通用夹具 ................................. 24 3.2.2专用夹具 ................................. 24 3.3夹具的设计内容 ............................... 24 3.3.1定位基准的选择 ........................... 24 3.3.2工件的夹紧及夹紧装置 ..................... 25 3.3.3夹紧结构简介 ............................. 25 3.3.4夹紧力要素的确定 ......................... 26 3.3.5夹具材料的选择 ........................... 28 3.3.6夹具误差分析 ............................. 28 3.4钻床夹具的设计 ............................... 30 3.4.1钻床夹具的性能要求 ....................... 30