铣床专用夹具毕业设计论文说明书

摘要

我国社会主义现代化要求机械制造工业为国民经济各部门的技术进步、技术改造提供先进、高效的技术装备，它首先要为我国正在发展的产业包括农业、重工业、轻工业以及其它产业提供质量优良、技术先进的技术装备，同时还要为新材料、新能源、机械工程等新技术的生产和应用提供基础装备。

本论文是结合目前实际生产中，通用夹具不能满足生产要求，用通用夹具装夹工件效率低、劳动强度大、加工质量不高，而且往往需要增加划线工序，本论文为铣床专用夹具，主要包括夹具的定位方案，夹紧方案、对刀方案，夹具体的设计及加工精度等方面的分析。

本夹具能在加工常规零件的时候使质量进一步提升，并降低劳动强度，能在保证产品质量加工精度的同时批量生产，从而降低生产成本。从而夹具的使用在某种程度上提高实际生产中企业的效益。因而对夹具知识的认识和学习，在今天显的优为重要起来。

关键词：装备；制造；铣床；专用夹具；

Abstract

China's socialist modernization requirements for mechanical manufacturing industry sectors of the national economy progress of technology, technical transformation to provide advanced, effective technical equipment, it must first for China is in the development of the industry include agricultural, heavy industry, light industry and other industries provide good quality, technical advanced technical equipment, but also for new materials, new energy, mechanical engineering of production and application of new technology provides the basis of equipment.

The present paper is combining the actual production, gm can not meet the production requirements, fixture using universal fixture clamping work-piece efficiency, low labor strength, processing quality is not high, and often need to increase crossed process, and special design of a milling machine fixture, mainly including fixture positioning scheme, clamping, of cutter scheme, the concrete and the TAB folder design and machining precision analysis.

This fixture can in processing of conventional parts that quality further ascension, and reduce the labor intensity, can guarantee the quality of its products processing precision and batch production, so as to reduce the production cost. Thus fixture use in some extent improve the efficiency of enterprises in practical production. Thus to fixture knowledge know and study the optimal in today's show for important up.

Key words: equipment;manufacturing;milling; the machine tool's fixture

目录

绪论 (1)

1.机床夹具概论 (2)

1.1机床夹具的功能和作用 (2)

1.1.1. 机床夹具的功能 (2)

1.1.2. 机床夹具的作用 (3)

1.2机床夹具的组成 (4)

1.3机床夹具的分类及设计要求 (5)

1.3.1. 机床夹具的分类 (5)

1.3.2.机床夹具的设计要求 (7)

1.4机床夹具保证加工精度的原理 (7)

1.4.1. 机床夹具保证加工精度的工作原理 (7)

1.4.2. 使用夹具对工件进行加工时加工误差的组成 (8)

1.5机床夹具的现状及发展方向 (10)

2.零件的分析 (12)

3.工件的定位 (16)

3.1工件的定位方案 (16)

3.1.1.概述 (16)

3.1.2. 限制工件自由度与加工要求的关系 (17)

3.1.3. 确定定位方式与定位元件 (18)

3.2定位误差的分析与计算 (20)

3.2.1. 定位误差的产生原因及计算方法 (20)

3.2.2. 定位误差的计算 (22)

4.工件的夹紧 (24)

4.1夹紧装置的组成及基本要求 (24)

4.2夹紧力的确定 (26)

4.2.1. 夹紧力的三要素 (26)

4.2.2.夹紧的动力装置 (28)

4.2.3. 夹紧力的分析计算 (29)

5. 对刀元件、连接元件及夹具体 (32)

6. 夹具总体结构设计及精度分析 (34)

7. 夹具结构工艺性和经济性分析 (38)

7.1.夹具的结构工艺性 (38)

7.2.夹具的经济性分析 (38)

总结 (41)

参考文献 (42)

致谢 (43)

附录A (44)

附录B (50)