设计描述：

文档包括:
Word版说明书一份，49页，约200字
外文翻译一份

CAD版本图纸，共3

拨叉的CAD/CAPP设计及夹具PROE造型
摘要
我的毕业设计题目是拨叉的CAD/CAPP设计及夹具PROE造型，本次的毕业设计中我的论文分为三大部分：
第一部分主要是拨叉的工艺规程设计。其中包括采用CAD完成了零件图，用PROE完成了毛坯图的绘制。完成了拨叉的工艺规程设计，主要包括确定设计类型，确定毛坯制造形式，制定工艺路线，选择机床及工艺设备，确定机械加工余量，工序尺寸和毛坯尺寸，以及切削用量和基本工时的确定。运用CAPP软件完成了拨叉的机械加工过程卡和工序卡。
第二部分主要是拨叉的夹具设计。在这一部分的内容中，主要包括零件的定位基准的选择，定位机构的设计，定位远见的尺寸的确定，定位误差的分析。设计夹具主要完成了加紧机构的设计，加紧力及夹紧机构的设计，夹紧力及夹紧方向的确定，以及所选择的夹紧元件。夹紧机构主要是采用螺母和压板的手动压紧，其定位和加紧机构简单，方便可靠。
第三部分主要是采用Pro/engineer完成了拨叉的夹具造形。其中主要是详述了拨叉零件的绘制过程。

关键词：拨叉；Pro/engineer；CAPP

The CAD/CAPP Design Of Stir The Fork And Create Tongs Shape With Pro/Engineer
Abstract
The topic of my graduate design is the CAD/CAPP design of stir the fork and create tongs shape with Pro/engineer,in this graduate design, my graduate thesis primarily is divided into three big parts:
The first part is the craft rule design of stir the folk primarily. Among them including adopt the CAD completed the spare parts diagram, semi-finished product diagram draws. Completed to stir the craft rules distance of the folk design, primarily including make sure the production type, making sure the semi-finished product manufacturing form, establishing the craft route, choosing the machine bed and craft equipments, making sure the machine process remaining measures, work preface size with semi-finished product size and the size of slice the dosage, making sure the basic man-hour really. Applying  CAPP software to complete the machine of the folk process and the process card with the work preface card.
The second part primarily is the design of tongs to stir the fork. In this part of contenses, including the fiducial choice in fixed of the spare parts primarily ,the design of the fixed of the organization ,fixed and the analysis for the size of settling, ing error margin. The tongs design including completed the clip design of the tight organization primarily, clip the tight dint and set up the direction to settl really, and choose of the clip tight of a piece. Clip the tight orgination primarily is to adopt the bolt and the knothole with press move to compress tights, the fixed with clip the tight orgination simple, convenience and dependable.
The third part is the tongs to adopt Pro/engineer completing to stir the fork shape primarily. Among them primarily finished the process of drawing of the stir the fork in detail.
Key words: stir the fork; Pro/engineer; CAPP

目录

摘要 I
Abstract II
第1章 绪论 6
第2章 零件的分析 7
2.1 拨叉的作用 7
2.2 拨叉的加工工艺过程分析 7
2.2.1 拨叉的分析 7
2.2.2 合理选择定位基准 7
2.2.3 表面加工法 7
2.2.4 加工顺序安排 8
第3章 零件的工艺规程设计 9
3.1 确定零件生产类型 9
3.1.1 确定生产类型的依据——生产纲领 9
3.1.2 确定生产类型 9
3.2 确定毛坯的制造方式 9
3.3 制订工艺路线 10
3.3.1 基准的选择 10
3.3.2 零件表面加工方法的选择 11
3.3.3 热处理的位置 12
3.3.4 零件的表面加工顺序的划分安排 12
3.3.5 工艺方案比较 13
3.4 机床及工艺装备的选择 14
3.4.1 机床的选择 14
3.4.2 刀具的选择 15
3.4.3 量具的选择 15
3.5 机械加工余量 工序尺寸 及毛坯尺寸的确定 16
3.6 切削用量及其基本工时的确定 18
3.6.1 确定切削用量 18
3.6.2 工时定额的计算 19
第4章 CAPP简介 29
4.1 CAPP技术 29
4.2 CAPP系统的结构组成 29
4.2.1 零件信息的获取 29
4.2.2 工艺决策 29
4.2.3 工艺数据库/知识库 29
4.2.4 人机交互界面 30
4.2.5 工艺文件管理和输出 30
第5章 夹具设计 31
5.1 问题的提出 31
5.1.1 夹具设计 31
5.1.2 定位基准的选择 31
5.1.3 定位机构的设计 31
5.1.4 定位元件的尺寸确定 31
5.1.5 定位误差分析 32
5.2 夹紧机构设计 32
5.2.1 夹紧力的确定 32
5.2.2 切削力及夹紧力的计算 33
5.2.3 夹具体的设计 33
第6章 Pro/ENGINEER 造型 35
6.1 Pro/ENGINEER简介 35
结论 36
致谢 37
参考文献 38
附录 39