基于PMAC的商用五轴联动电火花加工数控系统  

Five-axis Commercial Electro-discharge Machining CNC System based on PMAC

作　　者：梁速[1] 徐辉[1] 陈默[1] 康小明[1] 赵万生[1] 卢智良 万符荣 吴强[2] 吴国兴[2] 朱宁[2] 

机构地区：[1]上海交通大学机械与动力工程学院机械系统与振动国家重点实验室,上海200240 [2]苏州电加工机床研究所有限公司,江苏苏州215011

出　　处：《电加工与模具》2012年第A01期27-31,共5页Electromachining & Mould

基　　金：国家科技重大专项(2009ZX04003-021)

摘　　要：研制了一种基于可编程运动控制器PMAC的五轴联动电火花加工数控系统。其采用全闭环速度模式的控制体系,具备实现电火花成形加工控制中包括间隙电压检测、伺服进给回退运动、多轴联动、主轴高速抬刀运动及各类摇动等的多项关键技术。该数控系统已应用于商用五轴联动电火花成形加工机床,通过大量的样件加工实验,验证了其良好的控制与加工性能。同时按商业化标准完善了数控系统,推动了其产业化进程。A 5-axis commercial Electro-discharge Machining （EDM） CNC system based on PMAC is introduced. The proposed CNC system adopts a full-closed loop motion control architecture in which servo drivers receive velocity signals from PMAC. The system achieves several critical tech- niques in controlling EDM process such as the gap discharge status detection, servo control for elec- trode＇s forward/backward moving, multi-axis simultaneous control, main axis＇ high-speed jump mo- tion and various orbiting motions, etc. The system validated its performance by performing a series ex- periments such as narrow slot processing and shrouded turbine blisk machining on a commercial EDM machine. Besides, the proposed system was further improved according to the commercial EDM CNC criteria.

关 键 词：电火花加工 五轴联动 PMAC 数控系统 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]