基于FANUC系统的PC机与数控机床多机通信

分析数控机床远程通信和多机通信的必要性,基于FANUC数控系统,以I-7520和I-7527智能通信模块为例,详细介绍远程多机通信总体设计方案、主要硬件模块功能、上位机软件设计思路、数控系统通信参数设置。该系统已在实际应用中验证通过,效果良好,具有推广应用价值。     

采用PC机的数控系统研究与开发

详述采用以PC 运动控制器组成上、下位机的形式自行研制开发的四轴数控系统.上位机采用通用PC机,以Windows操作系统为开发平台、Visual C 为开发工具对上位机的管理系统进行开发,实现数控加工过程的人机交互界面.下位机采用以P89C668单片机为控制核心自行研制的四轴运动控制器,完成与上位机的通信及整个运动控制细节.     

数控系统中混合型网络化通信系统研究

提出了一种由有线通信与无线通信相结合的并应用于数控系统的混合型网络通信系统.利用上位机与下位机结合的操作方式来实现组网,上下位机以基于TCP/IP协议的工业以太网平台连接;另外,数控系统通过虚拟串口技术与外围设备PDA组建蓝牙微微网,PDA可实现数控系统无报警信号的故障诊断功能.上下位机网络通信程序利用Winsock控件在C++Builder6环境中设计;在evb3.0环境中编写了PDA接收数据程序.通过上述方法下位机在正常运行时,CAD、CAM、刀具轨迹、NC代码等信息可以发送给上位机.当数控系统正常运行时,下位机可将加工信息发送给PDA.数控系统中混合型网络通信系统的应用扩大了数控系统的功能同时提高了加工效率.     

可编程多轴控制器的开放式数控系统

采用开放式运动控制器作为下位机、PC平台和Win9x/NT操作系统作为上位机的结构，组建双CPU开放式数控系统。在开放式软件设计中，采用了类的封装和继承技术，不同功能模块间以及功能模块和系统内核间采用基于客户机和服务器模型的通信技术。利用旋转缓冲区技术，实现了上位机和下位机之间任意大小的数据文件下载。将该数控系统应用于工程实际中，验证了系统的开放性和实用性。     

PC机与FANUC数控系统远程通信软件的开发

针对PC机与数控系统RS-232串口直接通信距离短、可靠性不高的缺点,介绍了基于智能通信模块(RS-485)的FANUC数控系统远程通信软件开发的硬件平台结构。以VB语言为软件开发工具,给出了上位机软件设计思路,应用远程智能通信模块指令,介绍了FANUC系统串口通信协议,阐述了通信数据包的软件处理过程,以及调试和通信参数设置。该系统已在实际应用中得到验证,效果良好,具有推广应用价值。     

开源IgH EtherCAT主站在LinuxCNC开放式数控系统中的应用研究

为了实现成本低廉,设计便捷、灵活、易扩展的数控系统,搭建基于EtherCAT通信总线与PC机的纯软件数控系统,并对该系统的实时性能进行了试验测试。以低成本工控机作为上位机,并集成好开源数控系统LinuxCNC软件的Linux RTAI(Real-Time Application Interface)实时操作系统,下载搭建EtherCAT主从站通讯框架,实现了PC上位机即EtherCAT主站与伺服驱动器即EtherCAT从站之间的通信,完成多轴数控系统测试平台的搭建。运用WireShark软件进行数控系统的实时性测试。实验结果表明,该数控系统的平均传输时间为47.7μs,最大值为779μs,最小值为0.2μs。很好地满足了数控系统要求响应时间在1 ms及以下的实时性要求,因此该方案集成EtherCAT的LinuxCNC可以用于工业机器人与通用数控机床等自动运动控制系统。     

ARM在嵌入式数控系统中的应用

本文介绍了基于ARM的嵌入式数控系统。该系统为主从式结构,上位机以ARM9为核心,实现人机交互,下位机以ARM7为核心,结合FPGA实现机床的运动控制,上下位机通过CAN总线进行通信。     

PC机与FANUC数控系统远程通信软件的开发

针对PC机与数控系统RS-232串口直接通信距离短、可靠性不高的缺点，介绍了基于智能通信模块（RS-485）的FANUC数控系统远程通信软件开发的硬件乎台结构。以VB语言为软件开发工具，给出了上位机软件设计思路，应用远程智能通信模块指令，介绍了FANUC系统串口通信协议，阐述了通信数据包的软件处理过程，以及调试和通信参数设置。该系统已在实际应用中得到验证，效果良好，具有推广应用价值。     

CAN总线在高功率激光切割生产线上的应用研究

针对激光切割生产线I/O点数多、数据传输信息量大、实时性和可靠性要求高等特点,对CAN总线在高功率激光切割生产线上的应用进行了研究。上位机采用PLC1131-3和VC++进行软件的开发,下位机各通信模块以STM32处理器为主控芯片进行软、硬件的设计,通过CAN总线实现上位机和下位机各通信模块的互相通信。在某高功率光纤激光切割数控系统中的运行表明,通讯稳定可靠,具有较强的实时性和抗干扰能力,在工业过程自动化领域具有良好的拓展性。     

开放式数控系统在机检测模块实现方法

为了实现数控系统在机检测功能,提出了一种基于开放式数控系统在机检测模块实现方法。开放式数控系统采用Windows操作系统,以工控机为上位机,以运动控制器为下位机的结构形式。在机检测系统由开放式数控系统、在机测头、机械系统、驱动系统等硬件组成;采用Visual C++软件基于面向对象思想开发了模块化在机检测系统软件。对测量误差进行了分析并介绍了相应误差补偿方法。实际应用表明,该在机检测模块能够完成复杂曲面的检测,实现了数控系统在机检测功能,有利于节约生产成本、提高生产效率。     

基于USB的激光热处理数控系统研究与开发

结合数控系统典型功能开发了基于USB的激光热处理数控系统，根据USB通信特点提出了一种其在数控系统应用中的通信方法提出了一种简单易用的网格生成方法，并根据激光热处理机床的工况，将S曲线加减速形式应用于控制系统，解决了机床冲击振动问题。系统具有可靠性高，功能全，人机界面友好的特点，在实际应用中取得良好效果。     

RS422在数控机床联网中的应用

阐述RS422在数控机床通讯中的应用方法,提供一种简单、可靠、实用的数控机床联网方法。     

网络数控制造系统中常用DNC通讯接口模式

讨论在网络数控制造系统中常用的基于串口服务器的DNC通讯接口模式,分析各个集成DNC系统接口模式的含义及其特点,提出了基于串口服务器的异构数控系统的DNC集成方法,讨论了网络数控制造系统中基于串口服务器的集成DNC系统的发展方向。     

Ubiquitous-based mobile control and monitoring of CNC machines for development of u-machine

This study was an attempt to control and monitor Computerized Numerical Controller (CNC) machines anywhere and anytime for the development of a ubiquitous machine (u-machine). With a Personal Digital Assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented in this study for the purpose of u-manufacturing and u-machines. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by Object linking and embedding for Process Control (OPC) and shared CNC memory. For communication, the design of a server contents module within the target CNC was based on a TCP/IP. Furthermore, the client contents module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the Numerical Control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.     

USB通讯在数控系统中的应用

介绍了一种基于USB通讯的PCNC数控系统体系结构。主要阐述了数控系统体系结构及工作原理、USB固件编程以及USB通讯和驱动程序的开发等内容。该技术方案具有开发简单、易于实现的特点，可适用于高速数控系统的开发。     

Mobile and remote operation for M2M application in upcoming u-manufacturing

This study tried to control and monitor computerized numerical controller (CNC) machines anywhere and anytime for machine (mobile) to machine (M2M) application in wired and wireless environment of upcoming ubiquitous manufacturing systems (u-Manufacturing). With a personal digital assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented for u-Manufacturing in this study. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by object linking and embedding for process control (OPC) and shared CNC memory. For communication, the design of a server content module within the target CNC was based on a TCP/IP. Furthermore, the client content module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the numerical control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.     

基于PROFIBUS总线的数控系统建模与仿真

针对现场总线控制系统的特点,建立了基于现场总线数控系统的基本模型.由于现场总线的通信环节的时间延时的大小决定了基于现场总线的控制系统实时性能,本文利用Matlab/Simulink工具建立基于PROFIBUS-DP的数控系统通信系统模型,通过仿真,对现场总线数的传输延时对数控系统的性能影响进行评估,为基于现场总线的CNC系统的研究与开发提供了理论依据.     

PLC与PC机的串行通讯在数控管切割机中的应用

针对串行通讯技术在数控管切割系统中的运用,介绍了五轴联动数控管切割机床的一般系统构成和控制策略,对数控系统的核心控制单元横河PLC的通讯协议进行了详解,列出发送帧、接收帧的结构图,同时介绍了基于VB6.0的上位机串行通讯程序开发控件,给出开发串行通讯程序的流程图,写出的关键性代码经过简单修改,即可运用于新的串口通讯程序开发中,具有一定的实用性.研究成果已通过实际测试,并应用于五轴联动数控管切割机床的开发中.     

数控动梁龙门机床横梁水平自动调整装置

提出电子水平仪与数控系统之间的通讯连接用于监测动梁式数控机床的横梁水平,通过横梁受力变形理论分析与总结,提出电子水平仪与数控系统串口通讯,尝试对横梁进行实时连续的变形监测,数控系统根据采集的数据进行数据处理。     

WEB-BASED VIRTUAL CNC MACHINE MODELING AND OPERATION

A CNC simulation system based on internet for operation training of manufacturing facility and manufacturing process simulation is proposed. Firstly, the system framework and a rapid modeling method of CNC machine tool are studied under the virtual environment based on PolyTrans and CAD software. Then, a new method is proposed to enhance and expand the interactive ability of virtual reality modeling language(VRML) by attaining communication among VRML, JavaApplet, JavaScript and Html so as to realize the virtual operation for CNC machine tool. Moreover, the algorithm of material removed simulation based on VRML Z-map is presented. The advantages of this algorithm include less memory requirement and much higher computation. Lastly, the CNC milling machine is taken as an illustrative example for the prototype development in order to validate the feasibility of the proposed approach.