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江苏师范大学连云港校区
海洋港口学院
分离叉的工艺规程及铣内侧面的工装夹具设计
课程设计报告书
课程名称 专 业 班 级 学 号 姓 名 指导教师
年 月 日
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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。
分离叉加工工艺规程及其铣内侧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：工艺、工序、切削用量、夹紧、定位、误差。
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 hollow gear shaft processing procedure and the right end keyway milling fixture
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design includes 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 the structure of the blank, and select good parts processing base, design parts of the process route; and then the various parts of process dimension calculation, is the key to decide all processes equipment and cutting parameters; then special fixture design, selection and design of a jig for the various components, such as positioning devices, clamping elements, the guide element, clamp and the machine tool connecting parts and other components; calculate fixture is produced when the positioning error of fixture structure, rationality and deficiency, and later in the design of improved.
Keywords: The craft, the working procedure, the cutting specifications, clamp, the localization, the error
目 录
序言…………………………………………………………………1
一. 零件分析 ……………………………………………………2
二. 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、工序尺寸及毛坯尺寸的确定 …………5 2.5确定切削用量及基本工时 ………………………………6
三 夹具设计 ……………………………………………………7
3.1问题的提出………………………………………………7 3.2定位基准的选择…………………………………………7 3.3切削力及夹紧力计算……………………………………8 3.4定位误差分析……………………………………………9 3.5定向键和对刀装置设计…………………………………10
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