零件图
某型机摇臂零件的加工工艺及钻右端Φ9孔夹具设计
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。
某型机摇臂的工艺规程及其钻、粗铰、精铰右端Φ9孔的工装夹具,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。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:某型机摇臂、夹具设计、定位误差
Abstract
The design content of the mechanical manufacturing technology and machine tool fixture design, metal cutting machine tool, tolerance matching and measurement of aspects of knowledge.
A certain type of process planning and machine rocker drilling, hinge, hinge right endΦ nine holes of jigs and fixtures, including parts processing process design, process design and special fixture design three parts.Should first analyze the parts in the process design, understand parts of technology to design the structure of blank, and choose the good parts processing benchmark, design process of the parts;Then the parts size of eachwork step of the process, the key is to determine the process equipment for each process and cutting parameter;For the design of special fixture, then select design out of the component parts of the fixture, such as the positioning device, clamping device, led components, specific connectionwith machine parts and other parts;Calculated at the exit of fixture locating position error, analysis the rationality of the fixture structure and deficiency, and pay attention to the improvement in the later design.
Keywords: Design of rocker arm, fixture design and positioning error
目录
摘要I
Abstract II
第1章绪论1
1.1引言1
1.2机械加工工艺规程的作用1
1.3研究方法及技术路线2
1.4课题背景及发展趋势3
1.5钻床夹具简介4
第2章工艺规程设计9
2.1毛坯的制造形式9
2.2零件分析9
2.3基面的选择10
2.3.1粗基准的选择原则10
2.3.2精基准选择的原则10
2.4制定工艺路线11
2.5确定各工序的加工余量11
2.6确定切削用量及基本工时13
第3章钻床夹具24
3.1定位机构24
3.2夹紧机构24
3.3定位误差26
3.3.1定位误差26
3.3.2产生定位误差的原因26
3.3.3定位误差的计算27
3.4绘制夹具装配图28
3.5机床夹具的总体形式29
致谢31
参考文献32
装配图
夹具体
毛坯图
心轴
钻模板
钻模板支座
过程卡
零件分析及毛坯选择
设计所包含文件
字数统计
夹具设计部分
说明书前三页