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毕节学院机械工程学院机械设计夹具设计
河北旅游职业学院
机 械 制 造 技 术 基 础 课 程 设 计
题 目：专用夹具设计
学 院: 机械工程学院 班 级：x x 级机械制造与自动化x班 姓 名： x x 指导教师： x x 完成日期： 2013 年 12 月31日
毕节学院机械工程学院机械设计夹具设计
目录
第一章 前言 ································································ 1 第二章 专用夹具设计······················································· 2
2.1 夹具的简介 ······················································ 2
2.1.1 夹具的概念 ··············································· 2 2.2 夹具设计前的准备工作 ········································ 3
2.2.2 熟悉工件零件图和工序图 ····························· 3 2.3 选择夹紧机构 ·················································· 3 第三章 夹具装备分析 ····················································· 4
3.1 夹具的功用 ······················································ 4
3.1.1 机床夹具的主要功能 ··································· 4 3.1.2 机床夹具的特殊功能 ···································· 4 3.1.3 夹具体主要技术条件及优缺点的分析 ··············· 5 3.2 夹具的分类 ····················································· 6 3.3 夹具的组成 ························································ 7 第四章 机床夹具的设计特点和设计要求 ····························· 7
4.1 机床夹具的设计特点 ············································· 7 4.2 拟定夹具的结构方案 ··········································· 8
4.2.1 定位方案的确定 ·········································· 8 4.2.1 夹紧方案确定 ··········································· 9 4.3 夹具总图设计···················································· 9 4.4 夹具精度校核···················································· 9 4.5 夹具的设计步骤 ··············································· 10 4.6 总图技术要求的定制 ········································· 12 4.7 夹具设计中的几个重要问题 ······························· 13 4.8 精度分析 ······················································· 13 5.1定位基准的选择 ················································· 14 5.2 加工精度分析·················································· 15 5.3 拟定工艺路线 ··················································· 16 5.4 工艺方案的比较与分析 ········································ 17 5.5 选择加工设备与工艺装备 ····································· 19
5.5.1 专用夹具的基本要求 ································· 19 5.6 夹紧力的计算·················································· 20 5.7 定位误差分析 ················································ 21 第六章 夹具装配图上应标注的尺寸和技术条件 ······················ 21
6.1 夹具装配图上标注的尺寸 ·································· 21 6.2 夹具装配图上应标注的技术要求 ························· 22 第七章 夹具体零件图应标注的尺寸和技术要求 ······················ 22
7.1 夹具体零件图上标注的尺寸 ·································· 22 7.2 夹具体零件图上标注的技术要求 ····························· 23
毕节学院机械工程学院机械设计夹具设计
第八章 对夹具设计的心得体会 ········································· 24 第九章 课程设计总结 ··················································· 25 参考文献 ···································································· 26 附表1 机械加工工艺过程卡片 ······································· 27