毕业设计
数控零件加工工艺与编程
CNC Parts Machining Technology and Programming
班    级：            
学生姓名：        学 号：    
指导教师：      职 称：      
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论文提交日期：                               
摘  要
    数控加工因为其高柔性、高精度、高度自动化与高效率的特点，在机械制造业中的应用越来越广泛，在当今社会的位置越来越重要。本次设计我使用手动编程。
本次毕业设计是关于某个零件的加工工艺与程序进行分析与编制，在本次设计中,通过对零件的图形分析,材料分析,选好了加工毛坯尺寸,另外还对加工的工序.工艺进行分析,从而手工将加工零件的全部工艺过程、工艺参数、位移数据等以规定的代码、程序格式写出,编制出了适合所选铣床的程序。完成这次设计我做了以下工作：
1.零件图进行分析。本零件是对称图形，尺寸要求不高，但是有圆角、曲面和二次曲线较复杂的结构，对加工的程序要求高。根据零件图，合理的构思出加工顺序，并数字化建模，用UG软件画出零件的立体图，并选择毛坯材料和尺寸。
2.零件工艺性分析。加工的零件是对称的图形，一零件的几何中心为进刀点，也作为程序的原点。非加工的边缘四周区域是正方形，所以方便装夹，对夹具的要求不高。台虎钳足以满足零件装夹的要求。加工零件选择合理道具，粗铣毛坯量大，用面铣刀进行加工，其余的用φ6的立铣刀加工。球面用φ6球面铣刀加工。根据刀具和零件的要求算出切削用量，制定工艺卡片。
3.数控铣床零件加工程序的编制。手动编写出零件的加工程序，零件的程序中应用到了倒圆角的宏程序，球面的宏程序，二次曲线的宏程序。使用了G68旋转固定循环。零件加工的是内部结构，所以由上之下，由中间到四周进行加工。根据工艺卡片的要求分先后分别进行粗精加工。
关键词: 零件的分析 装夹 工艺 编程 宏程序
Abstract
Because the numerical control processing its high flexibility, the high accuracy, highly automated and the high efficiency's characteristic, is getting more and more widespread in machine-building industry's application, is now getting more and more important in society's position.
This graduation project is carries on the analysis and the establishment about some components processing craft and the procedure, in this design, through to the components graph analysis, the material analysis, chose the processing blank dimension, in addition to
processing working procedure. The craft carries on the analysis, thus the handwork will process the code which, the program format the components the complete technological process, the technological parameter, the displacement data and so on stipulated to write, established has suited chooses milling machine's procedure. Completes this design to obtain from the following several steps:
1.the pair gives the detail drawing carries on the analysis. This components are the symmetric figure, the size request are not high, but has the fillet, the surface and the conic section complex structure, requests high to the processing procedure. According to the detail drawing, the reasonable idea processing sequence, and the digitized modelling, draws the components with the UG software the block diagram, and chooses the semifinished materials material and the size.
2.the components carry on the technological analysis. The processing components are the symmetrical graph, a components' geometric center is the feed spot, also as procedure zero point. The non-processing's edge all around region is a square, therefore the convenie
nt attire clamps, is not high to jig's request. The bench vise satisfies the request which sufficiently the components attire clamps. The processing components choice reasonable stage prop, the rough milling semifinished materials quantity is big, carries on the processing with the face milling cutter, other uses φ6 end mill processing. The spherical surface processes with φ6 the spherical cutter. Figures out the cutting specifications according to the cutting tool and the components request, the formulation process chart.
3.the numerical control milling machine components add the project the foreword establishment. Manual compiled the components the processing program, in the components procedure applies the round angle great procedure, the spherical surface great procedure, the conic section great procedure. Used G68 to revolve the fixed cycle. What components processing is the internal structure, therefore from, to all around carries on the processing from among. Carries on the thick precision work separatelysuccessively according to process chart's request minute.
key word: Components analysis Clamping Process Programming 机械加工工艺系统Macro programs