设计简介
摘要
我所撰写的毕业论文是基于solidworks发动机箱体结构设计与加工路线拟定。发动机箱体是机器的基本零件，
轴套齿轮还有有关零件时发动机与机器连接成为一个完整的整体，确定保证对的位子来传递转矩和改动转速完成规定的运动。发动机箱体加工质量会影响机器使用时长,耐心,和性能。
此论文结合所学专业的理论和实践知识，编写设计发动机箱体结构设计与加工路线拟定。本此设计有制作时间长,工作量大,制作困难,与学习克服困难等特色，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。既提高了我们的专业要求，又培养了我们的实际设计意识。
论文对发动机箱体的功用分析、发动机的加工工艺过程、零件工艺设计作了分析和论证。对工艺规程的制作作了详细的指导，并设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： 箱体； 机械加工工艺； 工序； 加工余量； 工序尺寸；
切削用量；夹具精度； 发动机
我所撰写的毕业论文是基于solidworks发动机箱体结构设计与加工路线拟定。发动机箱体是机器的基本零件，
轴套齿轮还有有关零件时发动机与机器连接成为一个完整的整体，确定保证对的位子来传递转矩和改动转速完成规定的运动。发动机箱体加工质量会影响机器使用时长,耐心,和性能。
此论文结合所学专业的理论和实践知识，编写设计发动机箱体结构设计与加工路线拟定。本此设计有制作时间长,工作量大,制作困难,与学习克服困难等特色，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。既提高了我们的专业要求，又培养了我们的实际设计意识。
论文对发动机箱体的功用分析、发动机的加工工艺过程、零件工艺设计作了分析和论证。对工艺规程的制作作了详细的指导，并设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： 箱体； 机械加工工艺； 工序； 加工余量； 工序尺寸；
切削用量；夹具精度； 发动机
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 and proof-tested its precision to ensure the quality of workpiece.
Keyword: Box body; Mechanical processing technology; Process; Machining allowance; Procedure dimension; Cutting parameter; Fixture accuracy; The engine
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 and proof-tested its precision to ensure the quality of workpiece.
Keyword: Box body; Mechanical processing technology; Process; Machining allowance; Procedure dimension; Cutting parameter; Fixture accuracy; The engine
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 2
1.1.3 主要内容 2
第二章 发动机箱体工艺规程设计 3
2.1 发动机箱体的分析 3
2.1.1 生产类型的确定 3
2.1.2 箱体结构和功用的分析 3
2.1.3 零件图的工艺分析 3
2.2 发动机箱体毛坯的设计 4
2.2.1 确定毛坯种类及加工方法的选择 4
2.2.2毛坯的工艺分析及要求 5
2.2.3毛坯余量和公差的确定 6
2.2.4 基准的选择 7
2.2.5加工方法的选择 8
2.2.6箱体的材料及热处理 8
2.2.7阶段的划分 8
2.2.8 拟定发动机箱体的工艺路线 9
2.3加工设备及工艺装备的选择 10
2.4加工工序设计 12
第三章 钻床专用夹具设计 19
3.1钻床夹具的特点 19
3.2夹具的设计内容 19
3.2.1 定位基准的选择 19
3.2.2工件的夹紧及夹紧装置 19
3.2.3夹紧结构 20
3.2.4夹紧力要素的确定 20
3.2.5夹具材料的选择 22
3.2.6夹具的误差分析 22
第四章 三维实体建模过程 25
4.1发动机箱体三维图 25
第五章 技术性、经济性分析 28
5.1箱体的技术性分析 28
5.2箱体的经济性分析 28
结论 30
参考文献 31
致谢 33
