机械工艺夹具毕业设计79齿轮轴加工工艺，铣键槽夹具设计说明书

课 程 设 计

题 目：齿轮轴的机械加工工艺设计

班 级：XXXXXXXXXXXXXXX 姓 名： XXXXXXXX 指导教师： XXXXXXXXX 完成日期： XXXXXXXXXXXX

一、 设计题目

齿轮轴零件的机械加工工艺设计

二、原始资料

(1) 被加工零件的零件图 (2) 生产类型:中批或大批大量生产

三、上交材料

(1) 被加工工件的零件图 (2) 毛坯图 (3)机械加工工艺过程综合卡片 (4) 与所设计夹具对应那道工序的工序卡片 (4) 夹具装配图 (5) 夹具体零件图 (6) 课程设计说明书(5000～8000字)

四、进度安排

(1) 熟悉零件,画零件图 (2) 选择工艺方案,确定工艺路线,填写工艺过程综合卡片(3) 工艺装备设计(画夹具装配图及夹具体图) (4) 编写说明书 (5) 准备及答辩 五、指导教师评语

成 绩：

指导教师

日 期

1张1张1张张1张1张1张1份2天5天9天3天2天 1

摘 要

机械制造工艺学课程设计是我们学完了大学的全部基础课、技术基础课以及大部分专业课之后进行的.这是我们在进行毕业设计之前对所学各课程的一次深入的综合性的总复习,也是一次理论联系实际的训练,因此,它在我们四年的大学生活中占有重要的地位。

这次设计的是主动齿轮，有零件图、毛坯图、装配图各一张，机械加工工艺过程卡片和与所设计夹具对应那道工序的工序卡片各一张。首先我们要熟悉零件，题目所给的零件是主动齿轮。了解主动齿轮的作用，接下来根据零件的性质和零件图上各端面的粗糙度确定毛坯的尺寸和机械加工余量。然后我们再根据定位基准先确定精基准，后确定粗基准，最后拟定主动齿轮的工艺路线图，制定该工件的夹紧方案，画出夹具装配图，夹具体零件图。

这就是我设计的基本过程。

Abstract

After the machine manufacture technology curriculum project was we studies university's complete basic course, the technical basic course as well as the majority of professional courses, carried on. This is we before carrying on the graduation project to studies various curricula a thorough comprehensive total review, is also a apply theory to reality training, therefore, it holds the important status in we four year university life.

. What this design is a driving gear, has the detail drawing, the semifinished materials chart, assembly drawing each, the machine-finishing technological process card and with designs the jig to correspond that working procedure operation card each. First we must be familiar with the components, the components which the topic gives are the driving gear. Understands driving gear's function, then on basis components nature and detail drawing various end surfaces' roughness determination semifinished materials size and machining allowance. Then we determine the fine datum first again according to the localization datum, latter determines the thick datum, finally draws up driving gear's craft road map, works out this work piece clamp plan, draws the jig assembly drawing.

This is the unit process which I design.

目 录

摘 要 .......................................................................................... II Abstract ....................................................................................... III 1． 零件的分析 ............................................................................ 1

1.1零件的作用 ...................................................................... 1 1.2零件的工艺分析 ............................................................... 1 1.3审核齿轮轴的工艺性 ........................................................ 1 1.4确定生产类型 .................................................................. 2 2.确定毛坯并绘制毛坯简图 ........................................................... 2

2.1确定毛坯种类 .................................................................. 2 2.2确定毛坯的尺寸公差和加工余量 ....................................... 2

2.2.1.公差等级 .............................................................. 2 2.2.2锻件质量 ............................................................... 2 2.2.3. 锻件的材质系数 .................................................. 2

3.制定工艺路线 ............................................................................ 3

3.1定位基准的确定 ............................................................... 3

3.1.1. 粗基准的选择： .................................................. 4 3.1.2.精基准的选择： .................................................... 4 3.2表面加工方法的确定 ........................................................ 4 3.3工序的集中与分散............................................................ 5 3.4工序顺序的安排 ............................................................... 5 3.5确定工艺路线 .................................................................. 5 4.夹具的设计 ................................................................................ 7

4.1问题的提出 ...................................................................... 7 4.2夹具的设计 ...................................................................... 7

4.2.1定位基准的选择 ..................................................... 7 4.2.2.定位误差的分析 .................................................... 7

小结： .......................................................................................... 8 参考文献： ................................................................................... 8