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Intelligent compensation system for geometrical and heating position errors of numerical control machine

A technology of CNC machine tools and compensation systems, applied in general control systems, control/regulation systems, program control, etc., can solve the problems of inability to compensate for the real-time update of the model, weak robustness, etc., and achieve improved positioning accuracy and repeatable positioning accuracy. , improve the robustness, and solve the effect of precision compensation problems

Active Publication Date: 2012-08-08
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, these studies only propose static compensation measures for the pitch error of CNC machine tools, and use a preset constant compensation model to determine the compensation value, which cannot be adjusted in actual use as the ambient temperature and cutting conditions change. Real-time update, not robust

Method used

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  • Intelligent compensation system for geometrical and heating position errors of numerical control machine
  • Intelligent compensation system for geometrical and heating position errors of numerical control machine
  • Intelligent compensation system for geometrical and heating position errors of numerical control machine

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0034]The present invention is developed based on the Labview platform, embedded industrial computer, and Advantech multifunctional data acquisition card. Based on the external origin offset function of the machine tool and the PMC window reading function of the numerical control system, it integrates a temperature monitoring unit, an I / O data interaction unit, An intelligent control platform integrating real-time compensation module, online automatic modeling module, dynamic adjustment module, machine tool performance analysis module and remote monitoring module.

[0035] The intelligent compensation system for geometric and thermal composite position errors of CNC machine tools can monitor changes in external ambient temperature and processing conditions ba...

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Abstract

The invention discloses an intelligent compensation system for geometrical and heating position errors of numerical control machine, which comprises a numerical control machine, a temperature real-time monitoring unit, an I / O data interaction unit and a center control unit, wherein the center control unit comprises a real-time compensation module, a temperature signal processing module, an online automatic modeling module, a dynamic regulation module, a machine performance analysis module and a remote monitor module. The system is capable of monitoring the temperature of external environment and the change of processing condition in real-time, and thereby updating the compensation model in real-time to further accomplish bidirectional compensation for the geometrical and heating position errors of the motion shaft of numerical control machine. The intelligent compensation system disclosed by the invention improves the location precision and repeating location precision in machine processing, and solves the problems of precision compensation in numerical control machine better.

Description

technical field [0001] The invention relates to a machine tool position error compensation device, in particular to an intelligent compensation system for the geometric and thermal composite position error of a numerical control machine tool, belonging to the technical field of precision numerical control equipment. Background technique [0002] Modern CNC machine tools mainly adopt the screw nut pair transmission mode of rotary servo motor + ball screw. The screw adopts the "double push and support" assembly method, that is, one end is fixed, and the other end can float axially in a small amount, so that the screw is subjected to thermal stress. It can be freely extended to one end. Due to the manufacturing error, assembly error and transmission gap of the screw nut pair, there are inevitably machining errors in the CNC machine tool during work, thus forming a pitch error in the transmission process of the CNC machine tool. When the worktable moves in the reverse direction,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/404
Inventor 杨建国李自汉杨漪冯文龙
Owner SHANGHAI JIAO TONG UNIV
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