六轴联动电火花加工数控系统及机床  

Six-axis Electro-discharge Machining CNC System and Machine Tool

作　　者：陈昊[1] 陈默[1] 奚学程[1] 赵万生[1] 

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

出　　处：《电加工与模具》2013年第6期70-73,共4页Electromachining & Mould

基　　金：机械系统与振动国家重点实验室项目(MSVZD201305)

摘　　要：针对闭式整体涡轮叶盘的特殊加工要求,充分利用六轴联动所能提供的空间可达性,提出并实现了一些专门用于加工闭式涡轮叶盘的特殊功能,旨在大幅提高系统的加工效率与精度,降低加工成本。基于开源操作系统与可编程运动控制器,开发了六轴联动电火花加工数控系统,用于控制3个移动轴和3个回转轴的同时插补。该系统包括连续平滑的空间曲线路径及电极空间姿态角的六轴联动单位弧长增量法直接插补技术、曲线路径的六轴联动伺服进给与回退技术、曲线路径的六轴联动抬刀技术等。六轴联动极大地提高了加工柔性与自由度,使该系统可用于更多类型、更复杂曲面的加工。To meet the requirements for the manufacture of integrated shrouded blisks,a six-axis electro-discharge machining （EDM） CNC system has been developed spatial reaehability provided by system （OS） and a programmable the six axis structure. Built upon the to take the advantage of the open Ubuntu Linux operation motion control card,this EDM CNC system can achieve a coordinated interpolation for three linear axes as well three rotary axes. This CNC system has implemented several critical techniques for a better control of an EDM process,which includes Generalized Unit Arc Length Increment （GUALI） method six-axis simultaneous interpolation algorithm,six-axis simultaneous servo control for the forward/backward movement of the electrode along a spatial curve,six-axis coordinated jump along a curve,etc. The six-axis system greatly improved flexibility and freedom in a manufacturing process in the sense that this type of CNC system can be used for the manufacture of a large range of workpieces whose surfaces are complex.

关 键 词：六轴联动数控 电火花成形加工 闭式叶盘 运动控制器 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]