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A monitoring and real-time thermal error compensation system of machine tool temperature field based on wsn

A compensation system and thermal error technology, applied in the field of machine tool temperature field monitoring and real-time thermal error compensation system based on WSN, can solve the problems of difficult implementation of online monitoring of the temperature field of the whole machine tool, inconvenient data transmission, etc., and achieve a compact node structure. , The layout is flexible and convenient, and the effect of overcoming the inconvenience of wiring

Inactive Publication Date: 2019-01-25
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to propose a WSN-based machine tool temperature field monitoring and real-time thermal error compensation system to solve the problems of difficulty in implementing online monitoring of the machine tool temperature field and inconvenient data transmission in the prior art

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  • A monitoring and real-time thermal error compensation system of machine tool temperature field based on wsn
  • A monitoring and real-time thermal error compensation system of machine tool temperature field based on wsn
  • A monitoring and real-time thermal error compensation system of machine tool temperature field based on wsn

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Embodiment Construction

[0030] The present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0031] The machine tool temperature field monitoring and real-time thermal error compensation system proposed by the present invention is realized based on the developed WSN application platform, and its wireless network topology diagram is as follows figure 1 shown.

[0032] The present invention proposes a WSN-based machine tool temperature field monitoring and real-time thermal error compensation system, including a machine tool numerical control system, and also includes a WSN application platform. The WSN application platform includes sequentially connected wireless temperature sensor nodes, convergence nodes, control centers, Compensation signal receiving device.

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Abstract

The invention discloses a wireless sensor network (WSN)-based machine tool temperature field monitoring and real-time thermal error compensation system, including wireless temperature sensor nodes, a sink node, a control center, a compensation signal reception device and a machine tool numerical control system which are connected in sequence. The WSN-based machine tool temperature field monitoring and real-time thermal error compensation system measures the machine tool temperature by a temperature sensor installed on a machine tool, and obtains real-time state parameters by an analog-to-digital converter and a micro-control unit; data are sent to the sink node via a wireless network; the sink node collects real-time data of the plurality of temperature sensor nodes, and sends the collected data to the control center; the control center calculates a thermal error compensation value using a thermal error compensation model, and sends the thermal error compensation value to the machine tool numerical control system; and the machine tool numerical control system adjusts the position of a corresponding motion axis of the machine tool using the coordinate origin offset principle based on the thermal error compensation value.

Description

technical field [0001] The invention relates to a WSN-based temperature field monitoring and real-time thermal error compensation system of a machine tool. Background technique [0002] CNC machine tools are an important basis and key technology for the modernization of mechanical processing, and the machining accuracy of machine tools is one of the key technologies of machine tools. In the process of CNC machine tool processing, the thermal error caused by the uneven temperature rise of various parts of the machine tool changes the relative correct position between the tool and the workpiece, resulting in machining errors of the parts. According to statistics, the thermal error of CNC machine tools accounts for about 50% to 70% of the total error. Effective real-time thermal error compensation for machining systems can yield enormous socio-economic benefits. [0003] Thermal error compensation technology is to study the structural thermal characteristics of CNC machine to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/404
CPCG05B19/404
Inventor 许超冯平法黄双刚叶健
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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