Numerical control system based on high-speed timing/interruption interpolation processing

Abstract

The invention discloses a numerical control system based on high-speed timing / interruption interpolation processing, and the system comprises a main unit, a high-speed interpolation device, a communication interface module, an interpolation controller, a servo drive system, a numerical control machine tool, and a detection device. One end of the main unit is connected with the high-speed interpolation device, and the high-speed interpolation device comprises a man-machine interface module, a machining module and a timing / interruption interpolation processing module, wherein the man-machine interface module, the machining module and the timing / interruption interpolation processing module are respectively connected with the communication interface module. The high-speed interpolation device also comprises a position control module which serves as a feedback receiving detection device of the position detection module. The system achieves the high-speed timing / interruption interpolation control. The system achieves a purpose of high-speed interpolation, and meets the requirements of the high-speed timing / interruption interpolation processing of a numerical control system.

Description

technical field [0001] The invention belongs to a numerical control system for motion control of mechanical equipment such as metal cutting machine tools, and relates to the fields of machinery, electricity, automatic control, computer technology and communication technology, and more specifically relates to a numerical control system based on high-speed timing / interruption interpolation processing. system. Background technique [0002] Interpolation technology is the core of the CNC system. Among the various functions to be realized by the CNC system, the real-time requirement is the highest, and the speed of interpolation directly affects the realization of the control functions of the entire CNC system. [0003] In recent years, the NC interpolation system has been greatly improved, but affected by its own software and hardware, there are some disadvantages as follows: [0004] 1. The previous NC interpolation system was aimed at the local realization and replacement of ...

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Problems solved by technology

[0004] 1. The previous NC interpolation system was aimed at the local realization and replacement of a certain function within the NC system. It did not stand in the perspective of the entire NC system and designed a standardized NC smart chip according to certain standards and specifications, such as NC interpolation processing system and internal timing / interruption system, it cannot achieve true plug and play

[0005] 2. The entire CNC interpolation processing system does not adopt a modular structure, the system development cost is high, the maintenance efficiency is inconvenient, and the universal type is not strong

[0006] 3. In terms of man-machine dialogue, traditional dialogue modes such as mouse, keyboard and monitor are used for dialogue, which is inefficient and cannot be dialogued without mouse, keyboard and other devices

[0007] 4. There is no self-developed user software, and the software provided by the CNC manufacturer is used. The user-oriented operability is not strong, and there is no real purpose of realizing high-speed and high-precision interpolation

[0008] In addition, in the existing technology, the use of cache registers to store data and the data processing methods in cache registers have become increasingly mature. Please refer to the Japanese patent application of patent ZL02827931.X for an invention patent in China. The invention name is: numerical control method and numerical control system , the patent discloses in detail the manner in which numerical values ​​are processed in cache registers, relies on optimized data processing, and performs numerical control based on optimized processed control data within the memory, and does not give timing / interrupts CNC system for high-speed interpolation

[0009] In addition, in the existing technology, please refer to the article "Research on NURBS Curve Timing / Interrupt Interpolation Algorithm" published by Zhang Wanjun in the fourth issue of the Chinese journal "Manufacturing Technology and Machine Tools" in April 2015. This article analyzes The characteristics of the NURBS curve interpolation algorithm commonly used in CNC system processing, a NURBS curve timing / interruption interpolation algorithm is proposed, which can shorten the interpolation time, and does not provide a high-speed timing / interruption interpolation processing Numerical control system, this document uses the clock timer and drive shaft timing register to perform timing / interrupt response, and complete high-speed timing / interrupt interpolation processing of complex curves and curved surfaces

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