Reconfigurable computer numerical control system, numerical control method thereof and reconstruction method thereof

Abstract

The invention discloses a standardized reconfigurable computer numerical control system, a numerical control method thereof and a reconstruction method thereof, wherein the computer numerical control system is based on PC and is opened all around. A processing process model, which faces to the process and is open, is provided. Control resources are configured according to a control flow including generation, distribution, sending and execution of numerical control information. And the system has nothing to do with software and hardware platform performces like a digit number and a speed of a processor as well as an operating system performance and the like; and the system also has nothing to do with a programming interface; therefore, the system has good reconfigurability. According to the invention, real-time control of a tool path curve is converted into simplest real-time sending of a linkage instruction; and the system has a simple and reliable multiaxis synchronization capability with high speed and high precision, so that significant transformation of a numerical control method is brought about.

Description

technical field [0001] The invention belongs to the field of advanced control and advanced manufacturing, and specifically relates to a PC-based, all-round open, standardized reconfigurable computer digital control system and its digital control method and reconfiguration method, so as to adapt to the requirements of the reconfigurable manufacturing system. Requirements for digital control systems. technical background [0002] Reconfigurable manufacturing system is the research frontier of advanced manufacturing and the development direction of future manufacturing system. In 1998, the National Research Council of the United States published a research report on "Challenges Facing Manufacturing in 2020", listing reconfigurable manufacturing systems as the first of the 10 key technologies. Reconfigurable machine tool RMT (Reconfigurable Machine Tools) is decisive for reconfigurable manufacturing system. For more than ten years, digital information technology has advanced b...

AI Technical Summary

Problems solved by technology

[0027] Since the existing open CNC system based on the IEEE definition has a strong platform dependency, it essentially loses the basis for reconstruction

[0028] Second, the real-time control process is not reconfigurable

The IEEE definition completely ignores the process essence of digital control, and regards the digital control process as an object, which leads to the iteration of digital control information and the iteration of control process. It is impossible to involve the openness of digital control information, the openness of digital control process and the digital control process. Openness of the interface between processes

[0062] 2) The IEEE definition centers on the CNC system. The openness defined is the openness that the computer system itself should have. The architecture of the so-called open CNC system is transplanted from the computer system and is an object-oriented to realize control The software modular architecture cannot reflect the technical characteristics of the CNC system in the entire control process

[0063] 3) The IEEE definition fails to examine the architecture of the open CNC system from the macro perspective of the manufacturing system, and adopts the architecture of a general-purpose computer system, resulting in ambiguity in the concept of openness, which has not yet been unified

Descriptive words such as interoperability, portability, scalability, and interchangeability have become open so-called technical specifications, hindering the standardization process of CNC systems

[0064] 4), IEEE defines object-oriented rather than process-oriented, ignoring the essence of computer numerical control, the numerical control system is "computerized", and the development of digital control technology is led to the so-called "advanced control algorithm" (Japanese OSEC plan), namely The accuracy and speed of the interpolation iterative control algorithm, thus misleading the development direction of digital control technology

[0065] 5) The core issue of the CNC system is the openness and reconfigurability of the real-time control process

[0067] 7), The IEEE definition is not centered on the working machine, but centered on the CNC system, resulting in a large amount of redundant information such as interpolation cycle, contour step size, etc., which violates the principle of simplicity

This fundamentally denies the openness and reconfigurability of the CNC system, artificially complicates the existing digital control technology and the existing open CNC system, and sets insurmountable obstacles for the reconstruction of the CNC system. It will inevitably lead to the inability of the existing open CNC system to evolve into the control machine expected by the third industrial revolution.

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