论文总字数：19679字

摘 要

2015年5月国务院总理李克强签批了中国实施制造强国战略的第一个十年的行动纲领，即《中国制造2025》。 [^[1]]在“中国制造2025”的战略指导下，制造业的重要性是显而易见的，它是国民经济的主体，是立国之本、强国之基、兴国之器。十八世纪中叶英国首先开启了工业文明时代，世界列强的兴衰史和中华民族的奋斗史无以不在向我们证明，一个国家与民族的强盛与否，就是依靠强大的制造业作为载体。创造一个拥有国际竞争力的制造业，是我国提升综合国力水平、保障国家安全、完成中华民族伟大复兴的必经之路。随着时代的进步与发展，社会生产力的发展，二十世纪八十年代末，我国开始引进世界先进的CAD/CAM软件，为我国的制造业的迅速崛起贡献了不可磨灭的力量。这里要说的软件之一就是MasterCAM，MasterCAM拥有非常稳健强大的造型及建模功能，还可以绘出并设计复杂的曲线，螺旋线，零件的曲面。在模拟仿真加工功能方面，MasterCAM具有准确的曲面粗加工及灵活的曲面精加工功能。其可靠的刀具路径效验功能使MasterCAM在模拟还原零件加工的整个过程，模拟中不仅能显示刀具和机床，还能检查出刀具和夹具与被加工零件是否发生碰撞或干涉，真实反映加工过程中会出现的情况，并生成报告，MasterCAM不愧为一款优秀的CAD/CAM软件。

本论文主要研究三菱四轴数控系统的后置处理。主要通过介绍数控系统的历史，数控系统的发展以及研究现状，后置处理的定义以及意义，MasterCAM软件的介绍和其强大的功能，三菱数控系统的编译，以及后置系统的具体程序。

为了提高生产效率，降低生产残次品出现的概率是需要对自动编程软件进行深入学习的，更需要对后置处理系统有一定的研究和探讨。

关键词：MasterCAM；数控系统；三菱数控系统；后置处理

Research and development of post processing of Mitsubishi four axis CNC system based on MasterCAM

Abstract

In May 2015, Premier Li Keqiang of the State Council signed and approved "made in China 2025", which is the first ten-year action program for China to implement the strategy of manufacturing power. Under the strategic guidance of "made in China 2025", the importance of manufacturing industry is obvious. It is the main body of the national economy, the foundation of building a country, the foundation of strengthening the country and the tool of rejuvenating the country. In the middle of the 18th century, Britain first opened the era of industrial civilization. The rise and fall of the world powers and the struggle of the Chinese nation have proved to us that the prosperity of a country and a nation depends on the powerful manufacturing industry as the carrier. To create a manufacturing industry with international competitiveness is the only way for China to enhance its comprehensive national strength, ensure national security and complete the great rejuvenation of the Chinese nation. With the progress and development of the times and the development of social productivity, China has introduced this famous CAD / CAM software since the end of 1980s, which has made great contributions to the rapid rise of China's manufacturing industry.One of the software is MasterCAM. MasterCAM has very robust and powerful modeling and modeling functions. It can also draw and design complex curves, helices and surfaces of parts. In the aspect of simulation machining function, Mastercam has accurate surface rough machining and flexible surface finishing function. Its reliable tool path validation function enables MasterCAM to simulate and restore the whole process of parts processing. In the simulation, it can not only display the tools and machine tools, but also check whether the tools and fixtures collide or interfere with the parts to be processed, truly reflect the situation in the process of processing, and generate reports. MasterCAM is worthy of being an excellent CAD / CAM software.

This paper mainly studies the post-processing of Mitsubishi four axis CNC system. This paper mainly introduces the history of CNC system, the development and research status of CNC system, the definition and significance of post-processing, the introduction of MasterCAM software and its powerful functions, the compilation of Mitsubishi CNC system, and the specific program of post-processing system.

In order to improve the production efficiency and reduce the probability of defective products, it is necessary to study the automatic programming software deeply, and also need to study and discuss the post-processing system.

目录

摘要 I

Abstract II

第一章 绪论 1

1.1数控系统概述 1

1.1.1数控技术的发展历史 1

1.1.2我国数控系统的研究现状 2

1.2后置处理 2

1.2.1后置处理系统的概念 2

1.2.2 后置处理的研究现状 4

1.3选题背景与意义 4

第二章 MasterCAM模块的后置处理 6

2.1 MasterCAM的简介 6

2.1.1MasterCAM的功能介绍 6

2.1.2 MasterCAM的后置处理文件简介   6

2.2三菱数控系统的编译 9

2.3MasterCAM的后置处理文件修改 9

第三章 MasterCAM后置处理的验证 12

3.1 MasterCAM 四轴加工说明 12

总结 16

致谢 17

参考文献 18

第一章 绪论

1.1数控系统概述

1.1.1数控技术的发展历史

数控技术是本世纪中叶发展起来的一种自动控制技术。当年,约翰·帕森(John Pawson)提出了被电子装置控制的镗车坐标来制作直升飞机零件的方案,后来在美国空军军方的支持下在1952年成功研制了世界上第一台数控机床。两千多个电子管组成了控制装置，其占地面积约有一个普通实验室大小。伺服机构的液动机速度则被一台伺服马达改变液压马达斜盘角度控制。其采用脉冲乘法器来满足插足装置。这是一台使用电子管作为控制核心的机床,功耗过高,难以大规模应用,但为数控技术的发展迈出了第一步。

1959年,数控系统中的电子计算机核心部件改为晶体管,相比电子管而言,晶体管的体积更小,消耗的能量更少,处理任务效率更高,同时也更加可靠。数控系统的发展进入了第二阶段。

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