磁盘驱动臂零件图——A4
磁盘驱动臂零件加工工艺与夹具设计
摘要
本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。
磁盘驱动臂及其钻Φ2.7孔是包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。磁盘驱动臂属于异性支架类零件，针对其在加工中却会因其材质较软.形状不规则、体积较孝结构复杂、要求精度高等因素而难以装夫的问题。采用CAD软件设计出生产中必须出能够快速装夫的专用夫具并进行分析，在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处，并在以后设计中注意改进。
关键词：磁盘驱动臂；工艺；专用夹具；切削用量，夹紧，定位，误差。
Abstract
This design involves the knowledge of machine manufacturing technology and fixture design, metal cutting machine tools, tolerance matching and measurement, etc.
The disk drive arm and its drilling hole 2.7 are composed of three parts: process design, process design and special fixture design. Disk drive arm belongs to heterosexual bracket parts, but it is difficult to install because of its soft material, irregular shape, smallvolume, complex structure and high precision. In the process design, it is necessary to design and analyze the special fittings that can quickly assemble theworker by using CAD software. First, the parts should be analyzed, the structure of the blank should be designed after understanding the process of the parts, and the processing benchmark of the parts should be selected to design the technological route of the parts. Then, the dimension calculation of thework steps of the parts should be carried out, and the key is to determine thevarious processes. Processing equipment and cutting parameters are sequenced; then the design of special fixture is carried out, and each component of fixture is selected, such as positioning element, clamping element, guiding element, fixture body and machine tool connection component and other components; the positioning error caused by fixture positioning is calculated, the rationality and shortcomings of fixture structure are analyzed, and improvement is paid attention to in future design.。
Keywords: disk drive arm; technology; special fixture; cutting parameters, clamping, positioning, error.
目录
摘要1
Abstract 2
第1章绪论4
1.1课题背景4
1.2目的5
1.3选题的依据及意义5
1.4夹具的发展趋势5
第2章计算生产纲领、确定生产类型7
2.1生产纲领7
2.2生产效率分析7
2.3生产类型7
第3章零件的分析9
3.1零件的作用9
3.2零件的工艺分析9
第4章工艺规程设计11
4.1毛坯的制造形式11
4.2选择定位基准11
4.3制定工艺路线12
4.4机械加工余量的确定13
4.5选择各工序加工设备及工艺装备13
4.6确定切削用量及基本工时14
第5章钻床夹具设计23
5.1问题提出23
5.2定位机构23
5.3夹紧机构24
5.4机床夹具的总体形式25
5.5绘制夹具零件图26
5.6绘制夹具装配图26
结束语28
谢辞29
参考文献30
夹具装配图——A2
衬套——A4
夹具体——A2
毛坯图——A4
心轴——A4
钻模板——A4
钻模板支座——A4
2摘要
3设计所包含文件
4目录
6过程卡
7工艺卡
8工序卡
1字数
5夹具设计部分
