数控特征单元定义、实现及其应用研究

The Definition and Implementation of NC Feature Unit and Its Application

从产品信息集成和分布式计算的角度提出了数控特征单元( NCFU )的概念。通过利用 NCFU技术 ,可以实现基于特征的 NCP/CNC集成与刀具轨迹的动态产生和实时控制。分析了 NCFU的功能和信息需求及其定义方法 ,讨论了适合于 2 .5轴数控加工的行切特征单元和环切特征单元 ,以及适合于 3轴曲面加工的网格曲面特征单元 ,并提出了相应的 NCFU自动分解算法。对基于 NCFU的 NCP/CNC集成系统体系结构进行了研究。

This paper provides a new idea in the area of Numerical Control Machining——Numerical Control Feature Unit(NCFU), which can be applied to integrate NCP and CNC system,to generate and control tool path in a dynamic and real-time way.The function and information requirement of NCFU are analyzed in detail, the methods to define NCFU are given, three types of NCFU adapt to 2 5D^3D NC machining are defined and the algorithms for generating these NCFU are described. In the end, the architecture of integration of NCP/CNC system based on NCFU is studied.