多轴联动电火花加工数控系统实时技术研究

Real-time technology of multi-axis EDM-CNC system

为了解决多轴联动电火花加工数控系统在开发过程中实时技术的处理问题,将RT-Linux技术应用于数控系统开发之中.将数控系统的体系结构宏观上分为实时部分和非实时部分两大部分,微观上分为用户管理模块、实时控制模块和驱动模块3大模块;构建3个模块中所有涉及到实时任务的部分,包括实时控制模块的构建,驱动模块的构建,用户管理模块和实时控制模块间通信方式的构建,实时控制模块和驱动模块间通信方式的构建;开发了五轴联动电火花加工数控系统,并应用于整体式涡轮盘加工实验,实验表明,整个系统实时性强,稳定、高效.

To deal with the real-time technology in developing a multi-axis EDM-CNC system,RT -Linux was adopted.Based on RT-Linux,the system was macroscopically divided into a time-sharing part and a real-time part,and microcosmically into user management module,real-time control module and driving module.All the real-time parts of the three modules were constructed,including the construction of real-time control module,driving module,the communication between user management module and real-time control module,and the communication between real-time control module and driving module.A five-axis EDM-CNC system is developed and then applied to the machining experiment of rimed turbine blisk.It is concluded that the system is real-time,stable and efficient.