| CNC technology is the basis for modern equipment manufacturing industry, relating to national strategies and reflecting the status of a nation's comprehensive scientific and technological level, also is the national medium and long-term science and technology projects in 16 major projects in key technologies. High-grade CNC system with high-speed,high-precision control,five-axis interpolation,multi-channel control and turn-milling control technology is increased to a high degree of strategic materials, and becomes the developed country limit the product which China imports, domestic have not had the corresponding product now. It becomes a very important high-end CNC work that planning a complete functions of high-grade CNC system and studying the various functions of technology and computer software's plan.This paper has depth researched a high-grade CNC system structure,programming standards,high-grade CNC function technology and algorithm features refering to a large number of famous overseas high-grade CNC system of the control function,the programming system and technology features, and mainly completed following work:First, a overall system function of high-grade CNC system was planned, proposed the development of high-grade CNC system need to realize five important composition technologies: CNC system software structure,high-level programming function,composite cycle function,complex movement control and multi-channel control function.Second, a overall planning of CNC system software structure was analyzed,and also gave CNC control system,CNC system software functional requirements and software features based on PC and the general operating system.Third, high-level language(macro programs)features of CNC system were analyed, and described the development of macro programs computer software processes through analysising SIEMENS840D @ sentence and control structure, and also provided the basis for the realization of high-level programming function of CNC system.Fourth, composite cycle function of CNC system was analyed, and described the development flow of composite cycle software through analysising technology realization of SIEMENS840D instructions such as drilling & milling & turning & threading.Fifth, we researched high-grade CNC system motion control functions such as five-axis processing,composite processing and oblique-axis machining, and also gave the mathematics model of the multi-coordinate transformation and the rectangular coordinate transformation to solve these complex movement control.Sixth, we researched the multi-channel control realization method in CNC system, and also put forward a method to control multi-channel logic level interference, and carried on the process description through the example, provided useful reference for the multi-channel control function's development.Through carring out the above research work, it has laid the good foundation for the independent high-grade CNC system's development and industrialization.
|
PDF Full Text Request