Multi-machine tool temperature difference analysis-based machine tool motion compensation system

Abstract

The present invention discloses a multi-machine tool temperature difference analysis-based machine tool motion compensation system. The system includes a model setting module, a temperature acquisition module, a deformation determining module and an error compensation module, wherein the model setting module is used for establishing a temperature difference deformation model, the temperature acquisition module is used for acquiring the temperature of the motion shaft of an n-th machine tool in a moving state at a time point t1 and a time point t2 and calculating the temperature difference of the motion shaft of the n-th machine tool at the time point t1 and the time point t2, the deformation determining module is used for calculating average temperature difference T0, and comparing T1, T2, T3 ... , and Tn with T0 separately so as to calculate current deformation L, and the error compensation module is used for performing error compensation on a target motion shaft according to the current deformation L. The temperature analysis method in the invention effectively avoids the problem of the susceptibility of temperature to the interference of factors in single-time point temperature acquisition and improves the validity of temperature analysis, and therefore, the accuracy of the system of the invention in machine tool motion shaft error compensation can be ensured, and therefore, the machining accuracy of the machine tools and the quality of processed products can be ensured.

Description

technical field [0001] The invention relates to the technical field of machine tool motion compensation systems, in particular to a machine tool motion compensation system based on temperature difference analysis of multiple machine tools. Background technique [0002] CNC machine tools are one of the technical foundations and development directions of the equipment manufacturing industry, especially when facing the mold processing market. The core component of the CNC machine tool is the motion axis, and its performance determines the machining accuracy and production efficiency of the entire machine tool to a large extent. The motion axis has the advantages of compact structure, light weight, small inertia, low vibration, low noise, and fast response. It not only has high speed and high power, but also has a series of functions to control the temperature rise and vibration of the motion axis, etc. Reliability and safety of high-speed operation. However, after the motor i...

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Problems solved by technology

However, after the motor is built into the main shaft part, it will inevitably cause heating problems, and the temperature rise caused by the heating will affect the temperature of the movement axis of the machine tool. If the error compensation is not performed in time, it will affect the machining accuracy of the machine tool. Thus affecting the effect and precision of the products processed by the machine tool

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