支架零件机械加工工艺及夹具设计说明书

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设计说明书

支架零件机械加工工艺及夹具设计

姓 名： 学 号：

年 级： 专 业：

学生类别： 指导教师： 教学单位：

2015年 5月1 日

题目：

摘 要

这篇文章是基于支架零件的机械加工工艺及夹具设计,包含支架制定零件图，毛坯的选择，制定夹具，零部件的工艺路线，刀具选择，切割的确定方法填充工艺文件的数量。选择正确的加工方法，加工工艺的合理设计。此外，两个流程加工件填充盖设计了专用夹具。

许多类型的夹具，夹具，其中最广泛使用的通用夹具，尺寸和更加标准化，以及专业工厂进行生产。在大规模生产应用广泛，适用于工件的加工流程服务专用夹具，你需要来设计和制造自己的工厂加工的工件。本文的主要内容是完成加工车￠60孔夹具设计。

关键词：支架，工艺处理，夹具，工艺文件

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Abstract

This article is a mechanical processing technology and fixture design based on bracket parts, including bracket making parts diagram, the choice of blank, making process, parts of the fixture, tool selection, the number of filling method determines cutting process documents. Choose the correct processing methods, reasonable design and processing technology. In addition, the two process filled cover designing special fixture.

Many types of fixture, fixture, one of the most widely used universal fixture, size and more standardized, and professional production factory. Widely used in large-scale production and application, processing service special jig is suitable for the workpiece, you need to work to design and manufacture their own processing plant. The main content of this paper is to complete the processing of car of 60 hole fixture design.

Keywords: support, process, fixture, process documents

目 录

1 前言 ...................................................................................................................................... 1 2 零件的分析 .......................................................................................................................... 2

2.1零件的作用 ..................................................................................................................... 2 2.2零件的工艺分析 ............................................................................................................. 2

2.2.1孔的加工 ............................................................................................................. 2 2.2.2面的加工 ............................................................................................................. 2

3 工艺规划设计 ...................................................................................................................... 2

3.1毛坯的制造形式 ............................................................................................................. 2 3.2基面的选择 ..................................................................................................................... 3

3.2.1粗基准的选择 ..................................................................................................... 3 3.2.2精基准的选择 ..................................................................................................... 3 3.3工艺路线的拟定 ............................................................................................................. 3

3.3.1工艺路线方案 ..................................................................................................... 3 3.3.2工艺方案的确定 ................................................................................................. 4 3.4毛坯尺寸及其加工余量的确定 ..................................................................................... 5

3.4.1两侧面毛坯尺寸及加工余量计算 ..................................................................... 5 3.4.2毛坯尺寸及加工余量计算 ................................................................................. 5 3.5确定各工序切削用量及基本工时 ................................................................................. 5 4 车￠60孔夹具设计 ............................................................................................................. 12

4.1车床夹具的设计要点 ................................................................................................... 12 4.2 车床夹具设计要求说明 .............................................................................................. 13 4.3 定位机构 ...................................................................................................................... 14 4.4夹紧机构 ....................................................................................................................... 14 4.5零件的车床夹具的加工误差分析 ............................................................................... 15 4.6 确定夹具体结构尺寸和总体结构 .............................................................................. 15 4.7 零件的车床专用夹具简单使用说明 .......................................................................... 16 总结 .......................................................................................................................................... 18 参考文献 .................................................................................................................................. 19

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