CAJ | 학술논문

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。
침대폐식정체와륜협반적특수가공요구，충분이용륙축련동소능제공적공간가체성，제출병실현료일사전문용우가공폐식와륜협반적특수공능，지재대폭제고계통적가공효솔여정도，강저가공성본。기우개원조작계통여가편정운동공제기，개발료륙축련동전화화가공수공계통，용우공제3개이동축화3개회전축적동시삽보。해계통포괄련속평활적공간곡선로경급전겁공간자태각적륙축련동단위호장증량법직접삽보기술、곡선로경적륙축련동사복진급여회퇴기술、곡선로경적륙축련동태도기술등。륙축련동겁대지제고료가공유성여자유도，사해계통가용우경다류형、경복잡곡면적가공。
To meet the requirements for the manufacture of integrated shrouded blisks,a six-axis electro-discharge machining (EDM) CNC system has been developed to take the advantage of the spatial reachability provided by the six axis structure. Built upon the open Ubuntu Linux operation system (OS) and a programmable 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.