Heavy numerical control machine tool thermal error compensation control system based on CPS (Cyber-Physical Systems) and thermal error compensation method

Abstract

The invention discloses a heavy numerical control machine tool thermal error compensation control system based on CPS (Cyber-Physical Systems) and a thermal error compensation method. The thermal error compensation control system comprises an embedded acquiring card, an operation controller and a numerical control connector, wherein the embedded acquiring card is used for acquiring the temperatureinformation of measuring points of a machine tool and the displacement thermal errors of a main shaft tool tip of the machine tool and sending data to the operation controller after preprocessing; the operation controller is used for substituting the received temperature data into a prediction mathematical model to calculate thermal error prediction values, processing the thermal error predictionvalues into real-time compensation values according to formulated compensation strategies and uploading the thermal error prediction values and the real-time compensation values to a cloud server through a wireless network, wherein the prediction mathematical model and the compensation strategies are remotely updated through the wireless network; and the numerical control connector is used for inputting the received real-time compensation values to a machine tool numerical control system through a NCUC bus, and the machine tool numerical control system reads the real-time compensation valuesin operation and processing of G codes, and controls of the machine tool to move in the X axis, the Y axis and the Z axis.

Description

technical field [0001] The invention relates to the technical field of thermal error compensation of numerical control machine tools, in particular to a thermal error compensation control system and thermal error compensation method of heavy numerical control machine tools based on CPS. Background technique [0002] Heavy-duty CNC machine tools are an important part of today's high-end equipment manufacturing industry, and are the cornerstone of national defense industry and machinery manufacturing. The machining accuracy of heavy-duty CNC machine tools represents the industrial development level of a country. With the proposal of the "Made in China 2025" strategy, the requirement to improve the machining accuracy of CNC machine tools is becoming more and more urgent. Due to its large size and large stroke, heavy-duty machine tools are susceptible to thermal errors due to the influence of internal and external heat sources. A large number of studies have shown that among al...

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Problems solved by technology

[0006] Aiming at the disadvantages of the existing CNC machine tool thermal error compensation control system, such as poor independence and versatility, insufficient network communication capabilities, and low intelligence, the present invention proposes a heavy-duty CNC machine tool thermal error compensation control system and thermal error compensation control system based on CPS architecture. compensation method

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