机械毕业设计（论文）-刹车支架工艺规程及其铣A向面的夹具设计【全套图纸】.doc

PAGE 设计说明书 题 目∶ 刹车支架的工艺工装设计 系 名：___________机械系_______________ 专业班级：__________机电04_____________ 学生姓名：___________________ 学 号：____ __________________ 指导教师姓名：_____________________ 指导教师职称：___ 二○一○年 八 月 二十二 日 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。 刹车支架的加工工艺规程及其钻、扩、铰Ф14H9、Ф16H9与铣A向面的夹具设计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。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：切削用量 夹紧 定位 误差。 全套图纸，加153893706 ABSTRCT The design of the content relates to the machinery manufacturing technology and machine tool fixture design, metal cutting machine tool, tolerance and measuring and other aspects of knowledge. The brake bracket processing procedure and drilling, expanding, hinge with 14H9, 16H9 and A were to face milling fixture design is to include parts machining process design, process design and fixture design in three parts. In the design process should first of all parts for analysis, to understand the parts of the process to design a rough structure, and choose the good parts processing base, design parts of the process route; and then the various parts of the process step size calculation, is the key to decide the process equipment and cutting parameters; then special fixture design, selection and design of a jig for the various components, such as positioning devices, clamping elements, a guide element, clamp and the machine tool connecting parts and other components; calculate fixture is produced when the positioning error analysis, fixture structure rationality and deficiency, and later in the design of improved. Key words : cutting clamping and positioning error. 目 录 序言…………………………………………………………………1 1、 零件分析……………………………………………………2 2、 工艺规程设计………………………………………………3 2.1确定毛坯的制造形式 ……………………………………3 2.2基面的选择传 ……………………………………………4 2.3制定工艺路线 ……………………………………………4 2.4机械加工余量、