连杆体机械加工工艺过程及舌顶面铣夹具设计机械制造及其自动化.docx

连杆体机械加工工艺过程及舌顶面铣夹具设计机械制造及其自动化 　 连杆体机械加工工艺过程及舌顶面铣夹具设计 、 　摘 　要 　 这篇论文主要阐述了连杆体的工艺路线，铣定位面夹具的设计过程工艺部分说明了毛坯的确定，定位基准的选择，加工顺序的制定及加工方法的确定工序方面说明了如何确定刀具及工序图内容夹具设计部分，主要是根据工序定位基准面要求限制的自由度数目和定位基准面形状来确定具体定位元件及定位总体方案，再根据工序夹紧面的要求来确定具体夹紧元件和夹紧总体方案依据铣床夹具的结构设计特点，确定刀具相对工件位置的对刀方案，用定位键确定夹具在机床上的位置，最后做夹具总体结构设计分析 　【关键词】：铣床夹具，结构工艺性，工艺路线 　Abstract This paper mainly discusses the way of the connecting rod, and milling fixture design process. Process part shows the determination of blank, locating datum selection, the determination of processing order and processing method. Process shows how to determine the content of the cutting tool and work procedures. Fixture design part, mainly according to the processing positioning base required to limit the number of degrees of freedom and the shape of the locating datum to determine specific positioning elements and a positioning scheme, according to the requirements of the surface of the clamping process to determine the specific clamping device and clamping scheme. According to the characteristics of the milling machine fixture design project, determine the position of the tool relative to the workpiece tool positioning key to determine the position of the jig machine, finally the analysis of the overall structure of the fixture design. 　[key words] : milling fixture, structure technology, process route 　 目录 一、 绪论 .......................................................................................................................... 1 1.1 本课题设计的目的 ............................................................................................. 1 1.2 机械加工工艺与夹具设计的重要性 ................................................................. 1 1.3 质量、生产率和经济性的辩证关系 ................................................................ 1 1.4 课题的设计的方案 ............................................................................................. 2 1.4.1 工艺方面的设计方案 ............................................................................ 2 1.4.2 夹具设计方案 ........................................................................................ 2 二、工艺过程设计 ............................................................................................................ 3 2.1 概述 .................................................................................................................... 3 2.1.1 机械加工工艺过程的作用 .................................................................... 3 　2.1.2 机械加工工艺过程的类型 ...................................................................... 3 2.1.3 　机械加工工艺过程制定的原则 ............................................................ 3 2.1.4 连杆体机械加工工艺过程制定的步骤和内容 ..................................... 3 2.2 连杆体图样的分析 ............................................................................................ 4 2.3 连杆体毛坯的选择和确定 ................................................................................ 4 2.4 拟定连杆体机械加工工艺过程 ........................................................................ 4 2.4.1 选择粗基准 ............................................................................................ 4 2.4.3 经济加工精度 ........................................................................................ 5 2.4.4 选择加工方法 ........................................................................................ 6 2.4.5 机械加工工序顺序的安排 .................................................................... 6 2.4.5 热处理工序和辅助工序的安排 .............................................................. 6 2.4.5 划分加工阶段 ........................................................................................ 7 2.4.6 确定工艺方案 ........................................................................................ 7 2.5 机械加工工序设计（以连杆体铣舌顶面工序为例） 　............................ 8 2.5.1 机床和工艺装备的选择 ........................................................................... 8 2.5.2 机械加工余量 ........................................................................................... 8 三、舌顶铣夹具设计 ...................................................................................................... 11 3.1 概述 .................................................................................................................. 11 3.1.1 　机床夹具的功能 ................................................................................ 11 3.1.2 机床夹具的组成 .................................................................................. 11 3.2 夹具设计准备阶段 .......................................................................................... 11 3.2.1 夹具设计的基本要求 .......................................................................... 11 3.2.2 舌顶铣夹具设计工序加工要求的解析 .............................................. 11 3.2.3 铣床夹具的设计要点 ............................................................................ 12 3.3 工件定位方案的确定 ...................................................................................... 12 3.3.1 在夹具中工件如何定位 ........................................................................ 12 3.3.2 夹具在机床中定位 ......................。