Application of the Software Design Method in Development of the Human-Machine Interface for CNC

With the development of open CNC,the human-machine interface for CNC needs to be more open and credible.In this paper,the software design method of observer and bridge patterns was(introduced),and the framework and implementation was described.A human-machine for open CNC was(designed). It's proved that with such design patterns compact structure,high reliability and extendibility(of the) system can be realized.