机床拨叉——A2
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。
设计选取机床拨叉零件为被加工件，设计中包含了加工工艺规程制定、工序设计以及铣Φ37圆环面专用夹具设计三部分。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：机床拨叉；加工工艺；工序；专用夹具；切削用量
Abstract
This design involves the knowledge of machine manufacturing technology and fixture design, metal cutting machine tools, tolerance matching and measurement, etc.
The fork parts of the machine tool are selected as the processed parts. The design includes three parts: the formulation of the processing procedure, the design of theworking procedure and the design of the special fixture for milling 37 torus. In the process design,we should first analyze the parts, understand the process of the parts, then design the structure of the blank, and select the processing benchmark of the parts, then design the process route of the parts; then calculate the size of the parts in each step, the key is to determine the process equipment and cutting parameters of each step; and then,we can choose the processing benchmark of the parts. The design of the special fixture is carried out, and the components of the fixture are selected, such as positioning elements, clamping elements, guiding elements, connecting parts between fixture body and machine tool, and other components. The positioning errors caused by fixture positioning are calculated, the rationality and shortcomings of fixture structure are analyzed, and the design notes are given in the future. Intention to improve.
Keywords: machine tool fork; processing technology; process; special fixture; cutting parameters
目录
摘要1
Abstract 2
第1章绪论1
1.1课题背景1
1.2目的1
1.3夹具设计中的特点1
1.4夹具设计需保证的条件2
1.5夹具的发展趋势2
第2章零件的分析3
2.1零件的作用3
2.2零件的工艺分析3
第3章工艺规程设计4
3.1确定毛坯的制造形式4
3.2机械加工余量的确定4
3.3基面的选择4
3.4加工工艺路线6
3.5确定切削用量及基本工时7
第4章铣Φ37圆环面专用夹具设计18
4.1问题的提出18
4.2定位基准的选择18
4.3定位误差分析18
4.4切削力的计算与夹紧力分析19
4.5夹具设计及操作简要说明20
参考文献21
结束语23
心得体会24
夹具装配图—版本2
夹具体——A1
夹具装配图-A1
毛坯图——A2
1摘要
2设计所包含文件
3目录
4夹具设计部分
5过程卡
6工序卡
7字数
