Dynamic real-time compensation system for positioning errors of numerical-control machine tool

Abstract

The invention discloses a dynamic real-time compensation system for positioning errors of a numerical-control machine tool. The system comprises an error compensation hardware system and a compensation software platform based on network data interaction. The hardware system serves as a carrier and an executing part of compensation software and is used for achieving connection, communication, data storage and human-computer interaction between all functional modules. A programming mode oriented to objects is adopted for the software system, the software system has data interaction with CNC through an Ethernet, and therefore temperature signals can be collected and preprocessed, a positioning error mathematical model can be automatically established, and real-time calculation of the positioning errors, the intelligent model adjusting function, and training and optimizing on a self-learning model can be achieved. Due to cooperative work of the software system and the hardware system, the dynamic real-time compensation for the positioning errors of the numerical-control machine tool is achieved. The compensation system for the positioning errors is easy to operate, wide in application range and capable of meeting positioning error compensation requirements of various numerical-control machine tools and has great practical and commercialized application significance in improving machining accuracy of the numerical-control machine tools.

Description

technical field [0001] The invention relates to a compensation system in the technical field of error compensation of a numerical control machine tool, specifically, a dynamic real-time compensation system for positioning errors of a numerical control machine tool. Background technique [0002] After years of continuous development, my country's machine tool industry has made great leaps. In terms of the overall production scale, my country's annual machine tool production has reached the same level as the major machine tool producing countries. But as far as the technical level of CNC machine tools is concerned, it is only ranked in the second echelon in the world. At present, the CNC machine tools produced in my country account for about 35% of the domestic CNC machine tool market share, and the rest need to be imported from abroad, especially in the high-end CNC machine tool market, most of which can only be imported from foreign machine tool production powerhouses. The ...

AI Technical Summary

Problems solved by technology

According to the structure and principle of the real-time compensation device provided by the invention, a machine tool positioning error compensation device integrating a calculation processing module, a temperature sensor acquisition and transmission module, and a numerical control interface control module is mainly discussed. The data interaction between PMCs is used to realize the compensation of positioning errors. However, this invention also uses the preset mathematical model to calculate the compensation value, and it is impossible to intelligently judge and adjust the model in actual use. Therefore, the invention The compensation device provided is also not applicable to the actual production conditions of the machine tool

In addition, the compensation device uses the communication method with the PMC of the machine tool to realize data interaction, so it needs to occupy more I / O port resources. When there is a lot of data to be interacted with, it is necessary to expand the I / O module to achieve. Increased application cost

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