【摘要】 本文介绍了人机界面的理论模型，在此基础上引入了面向对象设计方法的基本原理，探讨了ＣＮＣ系统人机界面设计中通用的对象、类及其层次结构，并给出了相关部分的具体实现．最后简要介绍了利用上述方法实现的折弯机ＣＮＣ系统的人机界面。更多还原

【Abstract】 In this paper, the concept model of Human-Computer Interface(HCI) is intrduced. Basing on it the object oriented technologhy is led into. Then the usual hierarchical smictUre of the objects and classes in the HCI of CNC system are discussed. as well as th implement of relative components. Simultaneously a practical CNC system for Press Brake is given, of which the HCI is developed by Object Oriented Programming.更多还原