支架的钻φ38孔专用夹具设计及加工工艺装备规程制定含非标6张CAD图+说明书

支架——A2

摘要

夹具是零件加工的夹紧装置，是加工零件的一种必不可少的装置。夹具利用率高，经济性好，对功能组件的使用和数量少。随着零件的尺寸变化，越来越多的夹具被淘汰了，因此，设计一套专用夹具是十分有必要的。在设计专用夹具时要考虑工件的定位方案，工件的夹紧方案和设计夹紧机构，夹具的其他组成部分，夹具的结构形式等。
本次设计的题目是支架加工工艺规程制定及钻φ38孔专用夹具设计，在掌握零件作用的基础上，对零件的工艺进行分析。针对设计给定的题目，设计中主要对机床夹具进行设计。本夹具体是以保证加工精度，生产效率和便于工人操作为宗旨展开的设计。
设计之初我查阅相关数据及国内外关于机床夹具的文献，在看懂零件图的同时对零件的结构和工艺进行分析，明确粗基准和精基准的选择，确定零件的加工余量与毛坯的尺寸、从而确定零件的加工工艺过程、计算各工序的切削用量及工时。最终完成了本次设计所需的夹具。
关键词：支架；加工工艺；钻φ38孔；专用夹具；夹具设计;切削用量

Abstract
Fixture is a clamping device for parts processing, and it is an indispensable device for parts processing. The fixture has the advantages of high utilization rate, good economy and less use and quantity of functional components. With the size change of parts, more and more fixtures are eliminated, so it is necessary to design a set of special fixtures. In the design of special fixture, the positioning scheme ofworkpiece, the clamping scheme ofworkpiece, the clamping mechanism, other components of fixture and the structural form of fixture should be considered.
The topic of this design is the formulation of technological rules for bracket processing and the design of special fixture for drilling hole_38. On the basis of mastering the role of parts, the process of parts is analyzed. Inview of the given design topic, the design mainly carries on the design to the machine tool fixture. This fixture body is designed to ensure the processing accuracy, production efficiency and easy operation forworkers.
At the beginning of the design, I consulted the relevant data and the literature about machine tool fixture at home and abroad, analyzed the structure and process of the partswhile reading the part drawings, made clear the selection of rough and precise reference, determined the processing allowance and the size of the blank, thus determined the processing process of the parts, and calculated the cutting parameters andworking hours of each process. Finally, the fixture required for this design has been completed.
Keywords: bracket; processing technology; drilling hole_38; special fixture; fixture design; cutting parameters

目录
摘要I
Abstract II
第1章概述发展1
1.1、机床夹具的主要功能1
1.2、机床夹具的组成1
1.3、夹具设计的步骤和基本要求1
第2章零件的分析4
2.1零件的作用4
2.2零件的工艺分析5
第3章工艺规程设计6
3.1毛坯的制造形式6
3.2基面的选择6
3.3工艺路线的确定7
3.4各个表面的加工余量9
3.5确定切削用量及基本工时11
第4章钻φ38孔专用夹具设计23
4.1问题的提出23
4.2定位基准的选择23
4.3定位元件的设计23
4.4切削力及夹紧力计算24
4.5定位误差分析24
4.6夹具设计及操作简要说明26
总结27
致谢28
参考文献29

夹具装配图——A0

夹具体——A0

毛坯图——A2

钻模板——A2

钻模板支座——A2

2设计所包含文件

3目录

4夹具设计部分

5过程卡

6字数

1摘要