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数控系统网络接口技术是实现数控机床实时信息采集的基础,是确保数控系统开放式、网络化及智能化的关键技术.通过对数控系统传统信息采集接口和基于网络的MTConnect标准的对比研究,基于后者在兼容性、跨平台性、可读性方面存在的优势,围绕开放式数控系统体系框架,本文设计一种基于MTConnect标准的开放式数控系统网络采集接口.同时,为兼容传统信息采集接口,提出一种可拓展的通用接口架构,阐述架构间模块的功能及互联方式,并从数控系统数据项抽取、数据项适配器(Adapter)、接口代理(Agent)等方面重点阐述接口的设计.最后,在自主研发的数控系统上实现网络接口,并对相关时间延迟开展了测试与分析,表明了该通用接口的正确性与实用性.
The network interface technology of numerical control system is the basis for real-time information acquisition of CNC machine tools, and is the key technology to ensure the open, networked and intelligent CNC system.Based on the comparative study of traditional information acquisition interface of NC system and MTConnect standard based on network, The latter in the compatibility, cross-platform, readability advantages, around the framework of open CNC system, this paper designs a kind of open CNC system based on MTConnect network acquisition interface.At the same time, for compatibility with traditional information collection interface , An extensible universal interface architecture is proposed, and the functions and interconnections of the inter-architecture modules are expounded. The design of the interface is mainly elaborated from the aspects of data items extraction, data item adapters and agents in the numerical control system. , The network interface is realized on the independently developed numerical control system, and the relevant time delay is tested and analyzed, which shows the correctness and practicability of the common interface.