Research and Development on Full Distribution CNC System

摘要

The CNC architecture by expanding different motion cards is popular now, but it still lacks good configurable performance, the most functions of the motion card are redundant, and the control requirements cannot be met on the complex and high-precision situations. In this paper, a new full distribution CNC (FDCNC) system is presented. In this structure, the former two-grade interpolation is replaced with offline interpolation method; the motion control card in IPC is displaced with several intelligent nodes embedded in servo controllers. Communication between IPC and servo controllers is through CAN, which can transmit a lot of data in two directions and its communication protocol is public and standard. Thus, it gets much easier to repair, reconfigure, and replace some components. Additionally, enough information does great good to watching and diagnosing. Due to the use of Windows NT+RTX, not only developers are able to take advantage of the abundant Windows resources, but also CNC system possesses friendly graphic user interface (GUI), excellent open performance and good real-time performance. At last a running case is given