1 CNC system hardware technology develops rapidly
With the rapid development of integrated circuits and computer technology, the new generation of numerical control hardware technology has been injected with new vitality. Modern numerical control systems generally use VLSI, ASIC and digital signal processing (DSP) technology. Surface mount (SMT) and three dimensional high density technologies are widely used in electrical assembly to greatly improve system reliability. High-speed high-performance storage technologies, such as flash memory and PCMCIA cards, are extremely user-friendly. Thin film transistor liquid crystal display (TFTLCD) technology has made display devices flatter, facilitating mechatronic installation and improving human-machine interfaces. As the core of the CNC system, the processor uses "high-speed RISC CPU above the bit to ensure high-speed, high-precision CNC machining.
2 Architecture is open to development
The discussion of open CNC has been around for a few years, but it should be noted that there is no consistent definition of open architecture. Some users believe that the open representation can accept the communication protocol used locally; while others believe that openness means that all controllers operate exactly the same; for machine tool application engineers, open means tool holder movement, sensors and Logic control has a standard input/output interface; for large companies and university research engineers, openness means that all of these come from building blocks that are used immediately. Due to pressure from end users and integrators (machine tool plants), the development of open architecture is moving forward and will continue. A positive result at present is the PC-based CNC, which is PC-based.
3 real-time operating system enters the CNC
Strictly speaking, the numerical control software contains the idea of ​​real-time operating system, such as task scheduling, memory management, interrupt processing, etc., but this technology is implied, and is used with numerical control applications such as interpolation, servo, and decoding. Mixed. Every CNC system is unique and opaque. This situation is inconvenient for end users and system integrators. Today, with the increasing popularity of open CNC calls, it is logical to study the application of real-time operating systems in CNC software. In particular, the recent development of embedded real-time operating systems is rapidly developing, which will have a revolutionary impact on the development of CNC control software. Select a suitable commercial embedded real-time operating system, and then “hang†the CNC application software such as interpolation, servo, decoding and data processing, and finally transplant it into a hardware environment to form a numerical control system that finally satisfies the user. This is the personalized CNC system, which will be the main direction of open CNC.
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