机械设计毕业论文,机械毕业设计 QQ：295686378

基于PROE平台的柴油机机体工艺及三面精镗夹具设计
摘  要:箱体是机器和部件的基础零件，它将机器和部件中所有零件连接成一个整体，并使之保持正确的相互位置，完成必需的运动。因此，箱体的加工质量直接影响着机器的性能，精度和寿命。箱体类零件尽管形状各异，尺寸不一，但是它们均有空腔，结构复杂，壁厚不均等共同特点，在箱壁上既有许多精度较高的轴承支撑孔和平面需要加工，又有许多精度较低的紧固孔需要加工。因此，箱体不仅需要加工的部位多，而且加工的难度也较大。
    本设计以柴油机汽缸箱体为例，对箱体镗孔的夹紧和定位装置进行工艺分析和夹具的设计。在对此箱体的工艺规程采用两销一面对其进行定位以限制其六个自由度。为减少箱体在加工过程中的误差，我们考虑基准的重合原则，统一原则，互为基准原则以及粗基准的选择原则，为使定位稳定夹紧可靠，要求所选用的粗基准尽可能不重复使用原则。
    详细阐述了该汽缸箱体的加工工艺过程，对加工过程中进行的各道工序进行了详尽的说明，并附有零件图，加工工艺过程卡等资料加以说明，使箱体的加工过程一目了然。

关键词：箱体；工艺规程；夹具

The Body Technology Of Diesel And Three Plane Fine Boring Fixture Design Based On The Platform ProE

   Abstract: Tank is the basic part of machinery and components ,it connects all parts of machinery and componets as a whole,and it can make them keep correct mutual alignment,in order to complete necessary movement.so the processing quality of the tank has a direct effect on the function,percision and lifetime of machinery. Although series parts of tank have different shapes and sizes,each of them has common characteristic of vacant cavity, complicated structure, uneven wall's thickness and so on.in the tank wall ,there are many super precision rotor-braring holes and plane which need to be processed,and there are many lower precision tihgt-holes that need to be processed.Consequently,not only does tank have many patrs to be processed,but also it is very difficult to be processed .
   This design takes the diesel cyclinder tank for example.Analyzing the clamping and locating device of tank boring and designing the clamping tools.During regulations of arts and crafts of tank, we take two cylinders and one face to locate which can limit six free dgrees In order to reduce errors of tank during processing,we take standard and concurrent principle,unify principle,principle with each other for basis and selection of rough basis into consideration.In order to make the orientation tight enough,it is required to insist in the principle of using the unrepeated coarse beach mark as possible as you can.      
   In this paper,I set out in detail the processing of the cylinder tank,and I explain every workstage of processing in detail,and enclosed pictures of parts,cards of machining technics to explain it.In order to make the processing of tank clearly.

Keywords:tank,regulations of arts and crafts, clamping

设计ZH1105W柴油机气缸体的工艺设计和三面精镗夹具的专用夹具设计

目 录
1  前言 1
1.1课题内容 1
1.2课题来由 1
1.2.1课题背景 1
1.2.2 课题要求 1
1.2.3 组合机床国内外发展概况 1
1.2.4 本课题主要解决的问题和总体设计思路 2
2 气缸体加工工艺设计 3
2.1确定生产类型 3
2.2确定毛坯 3
2.2.2 确定铸件加工余量及形状 4
2.3工艺规程设计 4
2.3.1基准 4
2.3.2定位基准的选择 5
2.3.3表面加工方法的选择 6
2.3.4加工阶段的划分 6
2.3.5确定工序集中及分散 6
2.3.7热处理工序的安排 7
2.3.8机床设备与工艺装备的选择 7
2.4制定工艺过程： 8
2.5制定工艺路线 8
2.6选择加工设备和工艺设备 9
2.7机械加工余量、工序尺寸及公差的确定 9
  2.7.1工序01：粗铣缸盖结合面及底面 9
2.7.2 工序05：精铣水箱面及油壳底面 10
2.7.3工序10：三面粗镗 10
2.7.4工序15：钻定位孔 10
2.7.5工序16:铰定位孔25，深5 11
2.7.6工序20:攻丝 11
2.7.7工序21：扩孔 12
3夹具设计 12
3．1夹具设计的基本要求和步骤 12
3.1.1夹具设计的基本要求 12
3.1.2夹具设计的步骤 13
3．2定位机构设计及夹紧装方案确定 13
3.2.1定位元件设计 13
3.2.2确定加紧方案 14
3．3夹紧力的计算 15
3．4夹紧油缸的选择 16
3．5导向装置的设计 17
3．6夹具体的设计 17
3．7镗模架的设计 18
3．8夹具的精度分析 25
3．9安装过程 27
3．10夹具的操作说明 27
4结论 28
参考文献 29
致谢 30
附录 31

参考文献
［1］赵家奇编,机械制造工艺学课程设计指导书—2版.---北京:机械工业出版社,2000.10.
［2］李云主编,机械制造及设备指导手册.-- 北京:机械工业出版社,1997.8
［3］孟少农主编,机械加工工艺手册.---2---北京:机械工业出版社,1991.9.
［4］徐圣群主编，简明加工工艺手册。上海科学技术出版社，1991.2

附录
1. 机械加工工艺过程卡片                                            10
2. 机械加工工序卡片                                                44
3. 夹具装配图                   ZH1105W-20-0C                      A0
4. 夹具体                       ZH1105W-20-13                      A1
5.左镗模架                      ZH1105W-20-12                      A1
6.右镗模架                      ZH1105W-20-04                      A1
7.后支承板                      ZH1105W-20-16                      A3
8.连板                          ZH1105W-20-07                      A3
9.连板                          ZH1105W-20-03                      A3
10.推杆                         ZH1105W-20-11                      A4
11.导向套                       ZH1105W-20-002                     A4