CNC system hardware design

High-speed CNC engraving and milling machine system based on Windows CE hardware structure is shown in figure 1. Servo drive system using digital ac servo motor drive screw nut mechanism motion, three-axis linkage. Spindle motor and servo motor using PWM frequency control of motor speed technology, make the ac motor speed control performance has greatly improved. Management platform by the pentium processor; Work with the DSP as the core movement. Industrial PC using PCl04 / P Ⅲ 800 type embedded controller, the motherboard is equipped with a 104 bus interface. Movement control CARDS in U. S. DeltaTau company PMAC2 / PC104 control card, can be directly connected to a 104 bus interface of industrial control. With PMAC is based on DSP and special gate array chips, follow the open architecture standard development of programmable multi-axis motion controller, mainly provides the CNC carving and milling machine robot performance characteristics, testing and general automation of timing performance, can realize the motion control, logic control, resource management, and host interaction. With PMAC is the core of the MOTOROLA DSP56001/56002 digital signal processor, can control 1 ~ 8 axis at the same time, can be executed independently stored in its internal procedures, and executable program and PLC program, updating and to a serial port, bus and servo loop two ways to communicate with PC. With PMAC can also automatically to discriminant of task priority, thus the real-time multitasking. Because with PMAC card is a powerful digital computing capacity to complete the NC interpolation, the PLC program is running, such as real-time tasks, simplifies the implementation of NC system real-time task of development efforts, just according to the requirements development PC interface, NC program editing, CNC carving and milling machine tool state read non-real-time tasks, etc. By 104 bus communication between industrial PC and with PMAC, simply by invoking the dynamic link library PComm32 can achieve real-time communication between them.
engraving machine price information in the numerical control network.