多边形深孔类零件数控铣床程序及工装设计

江苏交通技师学院本科毕业论文

多边形深孔类零件数控铣床程序及工装设计

学生姓名：学生学号：院 （系）：专业班级：指导教师： 王 志 东 机械工程学院 0826 孙 福 庆

二〇一一年八月

多边形深孔类零件数控铣床程序及工装设

计

摘 要

大力发展以数控技术为核心的先进制造技术已成为世界各发达国家加速经济发展提高综合国力和国家地位的重要途径。数控加工工艺设计的主要任务是制定加工工艺规程，也是数控机床加工前的准备工作。工艺规程是规定零件、走到路线、刀具尺寸以及机床的运动过程。因此，是编程人员对数控机床的性能、制造工艺过程和操作方法具有指导性的工艺文件。数控机床加工的程序是数控机床的指令性文件。数控机床加工程序不仅要包括零件的工艺过程，而且还要包括求学用量的选择、运动方式、刀具系统、切削规范以及工件的装夹方法。工艺规程定的合理与否，对程序编制、机床的加工效率和零件的加工精度都有重要影响。因此，应遵循一般的工艺原则并结合数控机床的特点认真而详细地制定数控加工工艺。

关键词：数控技术，数控机床，数控加工

Polygon hole-type parts and CNC milling

machine tool design procedure

ABSTRACT

Developing advanced manufacture technology of numerical control technology as the core has become the world's developed countries to accelerate economic development important way to enhance overall national strength and national status. Main task is the development of process design for NC machining process of order, is getting ready for an NC machine. Processes requires parts, routes, tool dimensions and moving process of machine tools on. Therefore, is the programmer on the

performance of CNC machine tools, manufacturing process and how to process files with the guidance. Program is a CNC machine tool of numerical control machine tool command file. NC machining program to include not only part of the process, but also including school choice, exercises, tools, systems, cutting specifications, as well as workpiece clamping method. Process planning is reasonable or not, programming, processing efficiency and parts machining accuracy of machine tool has a significant impact. Therefore, should follow the General principles and technology of combining the character of CNC machine tool out a serious and detailed numerical control processing technology.

Keyword: CNC Technology ;Computer Numerical Control;CNC machined

目 录

摘 要 ............................................................. II ABSTRACT .......................................................... III 第一章 引 言 ................................................... - 1 -

1.1数控铣床的组成 ....................................................................................................................... - 1 - 1.2数控铣床的分类 ....................................................................................................................... - 4 - 1.2.1按主轴布置形式分类 ...................................................................................................... - 4 - 1.2.2按数控系统的功能分类 .................................................................................................. - 5 - 1.3数控铣床加工的优势和特点 ................................................................................................... - 6 - 1.4数控铣床的发展趋势 ............................................................................................................... - 7 -

第二章 配合零件的加工工艺研究 ................................... - 9 -

2.1加工工艺规程的设计原则 ....................................................................................................... - 9 - 2.2零件的工艺分析 ....................................................................................................................... - 9 - 2.3毛坯选择 ................................................................................................................................. - 10 - 2.4定位基准选择 ......................................................................................................................... - 10 - 2.5工艺路线的拟定 ..................................................................................................................... - 11 - 2.6加工余量、工艺尺寸的确定 ................................................................................................. - 13 - 2.7切削余量的确定 ..................................................................................................................... - 15 - 2.8数控铣床编程概述 ................................................................................................................. - 19 - 2.9数控铣床常用指令 ................................................................................................................. - 20 -

第三章 加工前的准备 ............................................ - 24 -

3.1工序划分的主要原则 ............................................................................................................. - 24 - 3.2装夹方式和夹具的选择 ......................................................................................................... - 25 - 3.3刀具的选择 ............................................................................................................................. - 28 -

第四章 零件的数控编程 .......................................... - 30 -

4.1加工分析 ................................................................................................................................. - 30 - 4.1.1形状结构分析 ..................................................................................................................... - 30 - 4.1.2尺寸分析 ............................................................................................................................. - 30 - 4.1.3技术要求分析 ..................................................................................................................... - 30 - 4.2确定装夹方案 .... …… 此处隐藏：12463字，全部文档内容请下载后查看。喜欢就下载吧 ……