Research And Development Of Open Style Numerical Control System Based On PC

With the rapid development of modern manufacturing, the weakness of traditional CNC system becomes apparent increasingly, such as poor compatibility, not function expansion and inflexible human-machine interface and so on. The research of open CNC systems is becoming one of the most important directions of CNC technology. The purpose of studying Open CNC system is to build a modular, reconfigurable and expandable control system. So the flexibility of functional of the CNC system can be improved, and some new demands of the producing can also be responded quickly.Combining with the motion controller and PC machine, a series of research related to opening NC system are carried out as follows:①Hardware and software architecture of opening NC milling machine system are explored;②Test Platform about Multi-functional CNC Milling Machine, which has four freedoms, is founded by the rebuilding of an ordinary milling machine. An Open CNC System is also designed for the test platform in the thesis. IPC+ Motion Controller is selected for the system's hardware structure and modularization is the idea of the software's project. The function modules can be added or deleted if some adjustments want be done to the system, which shows the opening and flexibility of the system. Some experiments about the Open CNC System and expandable function-modules have been done on the test platform.③The whole control system realizes the unified management under windows environment through using c++ programming treatment. The structure of the procedure is rational,the man-machine interface is good, controls and realize to the speed of the servo electrical machinery, adjustment of the acceleration and servo parameter through the parameter, Easy to use.④Finally, has conducted the research to the present commonly used minimum deviation interpolation method, has given the minimum deviation law straight line and circular arc interpolation algorithm some rules, has given the concrete algorithm design flow chart, and has carried on the comparison point by point with the System is composed of the main body of zhe article having introduced architectural reforming of machinery , numerical control system , controls software platform design and minimal deviation runin method research etc.