拔叉机械加工工艺装备及铣Φ27圆弧夹具设计含4张CAD图+说明书

拔叉零件图

摘要
本次设计是对拔叉零件的加工工艺规程及一些工序的专用夹具设计。此拔叉零件的结构简单，其加工的地方主要是拔叉脚的两端面、拔叉脚内表面和拔叉轴孔以及侧孔。本设计将孔与平面的加工明确划分成精加工和粗加工阶段以保证它们的加工精度。主要加工工序是粗铣拔叉头上下表面，钻Φ 15叉轴孔，铣拔叉脚两端面，铣拔叉脚内表面和钻Φ 5侧孔。整个加工过程的机床选用了钻床和铣床。工件在机床上定位夹紧选用专用夹具，夹紧方式为手动夹紧，夹紧可靠，操作方便。因此生产效率较高，适用于大批量、流水线上加工。能够满足设计要求。

关键词：拨叉工艺规程机床夹具

Abstract
This design is to the shifting fork parts of the processing technology and some of the special fixture design process.The structure of the shifting fork is simple, and the processing place is mainly the two end faces of the shifting fork, the inner surface of the shifting fork, the shaft hole and the side hole. The design clearly divides the machining of hole and plane into f inishing and rough machining s t ages to ensure their
machining accuracy. Main processing process is rough milling the top and bottom surface of shifting fork head, drillΦ 15 the shifting fork shaft hole, milling the two end faces of theshifting
fork foot, milling the inner surface of the shifting fork foot and drill aΦ 5 hole on the side of the shifting fork. Drilling machine and milling machine are used for thewhole process.
Theworkpiece is positioned and clamped on the machinewith special fixture, the clampingway is manual clamping, reliable clamping and convenient operation. Therefore, it has high prod uction efficiency and is suitable for mass production and asse mbly l ine processing. Can meet the design requirements. Keywords: shifting fork process planning machine tool fixture

目录
任务书..........................................Ⅰ

摘要............................................Ⅱ

Abstract.........................................Ⅲ

1.零件的分析..................................... 1

1.1零件的用途.................................... 1

1.2零件的工艺分析............................. 1

1.3零件的工艺分析............................. 3

2.工艺规程设计................................... 3

2.1确定毛坯类型绘制毛坯简图.................. 3

2.1.1选择毛坯............................. 3

2.1.2确定毛坯的外形、尺寸公差和机械加工余量4

2.2拟定拔叉工艺路线.......................... 5

2.2.1定位基准的选择....................... 5

2.2.2表面加工方法的确定................... 6

2.2.3加工阶段的划分....................... 6

2.2.4工序的集中与分散..................... 7

2.2.5工艺方案比选......................... 7

2.2.6工序顺序的安排....................... 8

2.2.7确定工艺路线......................... 9

2.3机床设备、工装的选用.................. 10

2.4机械加工工序设计......................... 11

2.4.1工序简图的绘制...................... 11

2.4.2加工余量、工序尺寸和公差的确定...... 12

2.4.3切削用量的选择...................... 14

3专用夹具设计................................... 18

3.1夹具设计任务.............................. 18

3.1.1专用夹具设计的基本要求.............. 18

3.1.2专用夹具设计的一般步骤和需要完成的任务

......................................... 18

3.2拔叉零件专用铣床夹具设计.................. 20

3.2.1夹具设计任务........................ 20

3.2.2确定夹具的结构方案.................. 20

3.2.3夹具设计........................... 20

参考文献........................................ 24

夹具装配图

拔叉毛坯图

夹具体

过程卡

加工工序卡

夹具设计部分

目录

设计所包含文件

摘要

字数