杠杆（CA1340自动车床）（一） 加工工艺及钻Φ20毛坯孔夹具设计【CAD图纸和说明书】

摘　要

设计内容：设计“杠杆”零件的机械加工工艺规程及工艺装备，并绘制出杠杆零件图、杠杆毛坯图、夹具装配图，夹具体零件图。填写机械加工工艺过程综合卡片、机械加工工艺卡片。编制课程设计说明书。

设计意义：本课程设计是重要的实践教学环节之一。是在完成生产实习，学完机械制造技术基础和其它专业课程之后进行的。通过该课程设计，将所学理论与生产实践相结合， 锻炼了自己分析问题、解决问题的能力，在这个过程中我独立地分析和解决了零件机械制造的工艺问题，设计了机床专用夹具这一典型的工艺装备，提高了结构设计能力，为今后的毕业设计及对自己未来将从事的工作进行了一次适应性训练，从而打下了良好的基础。

关键词：杠杆;课程设计;工艺规程；工艺装备；

Abstract

Design: Design "ram" parts of the machining process planning and process equipment, spare parts and to map out plans ram, ram rough map, fixture assembly, the fixture parts map. Complete machining process integrated card, a card processing machine. The preparation of curriculum design specification.

    Design significance: the design of this course is an important aspect of the practice of teaching. Completed internship in the production, completion of machinery manufacturing and technological foundation and other professional courses conducted. The adoption of the curriculum design, will learn theory and practice of combining production, tempered his analysis, problem-solving abilities, in the process I am an independent analysis and solution of the manufacture of mechanical parts of the problem, design a machine for this fixture A typical technology equipment, improved structural design capability for future graduates to design their own future and will be engaged in the work of an adaptation training, thus laying a good foundation.

Key words: ram; curriculum design, technology point of order, technology and equipment;

目 录

1 零件工艺性分析1

1.1 零件的作用1

1.2 零件的工艺分析2

1.3 生产类型2

2 选择毛坯，确定毛坯尺寸，设计毛坯图3

2.1 确定毛坯的制造形成3

2.2 确定毛坯尺寸3

3 选择加工方法，制定工艺路线3

3.1 定位基准的选择制定工艺路线3

3.1.1 基面的选择3

3.1.2 粗基准的选择3

3.1.3 精基准的选择3

3.2零件表面加工方法的选择4

3.3制定工艺路线4

3.4选择加工设备与工艺装备6

4 机械加工余量、工序尺寸及毛坯尺寸的确定6

5 确定切销用量及基本时间8

6 家居设计18

6.1 提出问题18

6.2 设计思路18

6.3夹具设计19

6.3.1 定位分析19

6.3.2 切削力及夹紧力计算20

6.3.3 夹具操作说明20

7 体会与展望21

8 参考文献21