【作者】 王瑞凤；

【导师】 郑敏利；

【作者基本信息】 哈尔滨理工大学 ， 精密仪器及机械， 2003， 硕士

【摘要】 随着科学技术的不断发展，机械制造业对产品的质量提出了更高的要求。由于数控机床具有自动化程度高、加工的零件误差小、产品质量稳定、生产效率高、便于产品的研制开发以及便于实现计算机辅助制造等特点而获得了迅速的发展和广泛的应用。但是纵观国内数控机床的使用情况，相当一部分数控机床的利用率还不是很高，效率还没有充分发挥。造成这种现象的原因主要是早期数控设备都不具有网络功能，甚至没有通讯接口，一般也不拥有大容量存储设备，而随着各种计算机辅助设计/制造（CAD/CAM）系统的完善与发展，这些CAD/CAM系统越来越快的进入实际加工系统，然而数控程序、控制参数、刀具补偿量等尚需在线手工录入，不利于CAD/CAM的一体化的实现。因此，采用自动编程系统或CAD/CAM系统离线生成数控程序和相应的控制参数与补偿量，通过仿真预先验证生成程序的正确性，优化NC加工程序，然后再利用数控机床与计算机之间的通讯软件进行数据传输，实现并行作业，是提高数控机床使用效率的有效方法。本文以数控加工与模具开发研究所现有的数控设备FANUC-0系列立式数控铣床为研究对象，利用该机床配有的RS-232C串行接口作为通讯口，以VC++6.0作为开发工具，进行了以下几方面的研究：（1） 在服务微机与FANUC-0数控铣床的通讯方面做了以下研究：通过数控机床上配有的RS-232C串行接口作为通信的突破口，深入研究RS-232C的引脚定义、数控系统的结构、CNC与PC机之间的接线方式、数控程序的格式、通讯参数的设定、通信方式、流传输协议设定，并模拟光电阅读机和纸带穿孔机，实现数控机床与本地服务机的通讯。（2） 在计算机网络的建立、实现本地服务PC微机与远程CAD/CAM设计微机的通信方面做了以下研究：进行网络拓扑、连接方式、通讯协议的选择，将由远程CAD/CAM软件直接生成的数控程序、控制参数等传输到服务机PC上，从服务微机将数控加工程序以文本文件的形式传输到数控加工机床上的存储器内；实现数控程序的传输、控制参数等的远程调用和网络传输。（3） 对由CAD/CAM软件生成的加工程序进行机床加工过程的模拟仿真，验证这些程序的正确性，并提供机床参数、加工时间的查询，进行了加工刀具路径仿真，从而使设计者能更好的根据数控设备的参数设置来更好地优化数控加工程序。<WP=7>（4） 采用基于可视化界面的VC++6.0作为开发平台，进行仿真的功能设计和用户界面设计及数学建模，开发了“数控加工程序的仿真软件”。更多还原

【Abstract】 With the development of technology and science, Machine manufacturing gives a higher request to the quality of product. Numerical control tools are developing quickly and are used widely because they are more roboticized, less errors of machined parts, products’ quality are steady, easy to product exploder and easy to realize computer aid manufacture. But if you give a vertical look to the use of domestic numerical control tools, you can know that quite a number of numerical control tools making less use of, and their efficiency are not bring into full play. These phenomena are caused by many factors. Firstly, most of CNC don’t have network function and big capability of store facility in the early. Secondly, Numerical control program/control parameter/tools compensation must be inputted by hand on-line. With the development of CAD/CAM system, this software goes into practical machining. It is a effectual way to improve numerical controls’ efficiency by use auto-program system or CAD/CAM soft to make numerical control programs, controls parameter and tools compensation off-line, after NC programs are validated by imitated, they are transferred from local server computer to CNC by a data transfer protocol.This paper gives a detail research to FANUC-0 upright numeral control milling machine of numerical control and mould develop graduate school. It uses RS-232C series interface as a communication interface. We use VC++6.0 as a empolder tool, give some research as fellows:(1) The communication of local server computer and FANUC-0 CNC is researched: RS-232C series interface is used as communication breakthrough, RS-232C’s pins definition, numerical control system configuration, the connection mode between CNC and PC, format of numerical control program, communication parameter definition, communication mode, stream transfer protocol definition are lucubrated. Photoelectricity reader and tape puncher were simulated and the<WP=9>communication between CNC and local server PC is made true. (2) The research of building Computer net, realizing the net communication between local server PC and CAD/CAM design computer is done. Include: Web analysissite, juncture mode and communication protocol are chose. NC programs and control parameters made by long-distance CAD/CAM software are transferred to local server computer, then are transferred to CNC’s memory in the form of text file. NC program and control parameters are loaded through long-distance and are transferred by internet/intranet.(3) NC programs made by CAD/CAM software are imitated as machine tool machining in order to validate the correctness of the program. CNC’s setting parameters and machining time can be inquired about. Machining tool’s route is imitated to make designer to optimize NC programs better based on CNC’s setting parameters.(4) Microsoft Visual C++ 6.0 based on Windows is used as exploder tool. Imitate function and user interface are designed, and the mathematics modeling is made. Numerical control program imitation software is developed, too.更多还原