【作者】 高照学；

【导师】 丁国富；

【作者基本信息】 西南交通大学 ， 机械制造及其自动化， 2006， 硕士

【摘要】 基于运动控制器的开放式数控系统具有灵活的软硬件结构,它是一种新型的模块化、可重构、可扩充的控制系统,能够快速而经济地响应新的加工需求,已成为当前数控技术发展的必然趋势,代表了数控技术的发展方向。 结合运动控制器及PC机,对开放式数控铣床系统的相关内容进行了研究,主要包括如下几部分: (1) 探讨了开放式数控铣系统的体系结构,包括开放式数控铣床系统的硬件结构和软件结构; (2) 对数控铣床的运动控制进行了研究,包括铣床的三轴联动控制和主轴的运动控制。铣床的三轴联动控制通过调用运动控制器提供的插补运动功能实现的,主轴的运动控制包括主轴的起停与分段调速控制,它们都是利用通用I/O接口实现的; (3) 研究了数控代码的编译和处理方法,主要针对刀具半径补偿问题进行了处理,最终将数控程序转化成为直接用来控制铣床运动的各种数据; (4) 对数控铣削加工仿真的相关内容进行了研究,包括刀具运动轨迹仿真和工件材料去除仿真,在工件材料去除仿真中,详细设计了工件的材料去除算法; 在上述研究的基础上,开发了组成数控铣床控制系统的各个模块,并将各模块进行集成,最终形成了功能较为完善的开放式数控铣床控制系统。更多还原

【Abstract】 The opening NC(numerical control) system based on motion controller has flexible hardware architecture, it is a new control system with modularized, reconstructed and extensional features and can respond the cutting command rapidly. It has became inevitable trend of NC technology development and has represented the direction of NC technology development.Combining with the motion controller and PC machine, A series of research related to opening NC system are carried out as follows:(1) Hardware and software architecture of opening NC milling machine system are explored;(2) Motion control of milling machine is studied. The motion control includes three axies control which is carried out by use of motion controller and spindle motion control, The spindle motion control includes spindle’s starting and stoping control and segmented speed regulation, they are both carried out by use of I/O interface.(3) NC program compiling and processing methods are studied, the problem of Cutter radius compensation is mainly discussed, in the end, the NC program is converted to the data which can be used directly to control milling machine motion.(4) Research on processing simulation including tool motion track simulation and workpiece material removal simulation of milling machine is carried out. Int this part, the algorithm of workpiece material removal simulation is designed.Based on these researches above, related modules of opening numerical control milling system are developed and the modules are integrated, at last, an opening NC milling system with complete function is built.更多还原