Monitoring system for thermal error of machine tool spindle

Abstract

The invention discloses a monitoring system for a thermal error of a machine tool spindle. The monitoring system for the thermal error of the machine tool spindle comprises temperature sensing tags, an RFID reader, a laser displacement sensor testing system and an upper computer control system, wherein the RFID reader and the laser displacement sensor testing system receive measuring instructions of the upper computer control system, the measuring instructions received by the RFID reader are output to the temperature sensing tags, information of the temperature measured by the temperature sensing tags is output to the RFID reader, and is transmitted to the upper computer control system, a laser displacement sensor control system outputs thermal deformation signals at the moment corresponding to the moment of obtaining of the information of the temperature to the upper computer control system, and the upper computer control system processes information of thermal deformation and the information of the temperature to obtain information of the thermal error. The monitoring system for the thermal error of the machine tool spindle is easy to operate, high in anti-interference capacity and high in response speed, online monitoring is carried out on the thermal error of the machine tool spindle, wireless transmission and processing of the information of the temperature and the information of thermal deformation are achieved, and monitoring efficiency of the thermal error of a machine tool is improved.

Description

technical field [0001] The invention relates to the field of dynamic measurement of the thermal error of the main shaft of a machine tool, in particular to a monitoring system for the thermal error of the main shaft of a machine tool. Background technique [0002] The thermal error of the machine tool spindle is mainly manifested in two aspects of temperature and thermal deformation. The error caused by the temperature rise and thermal deformation of the spindle is an important factor affecting the machining accuracy of the machine tool. At present, the temperature monitoring of machine tool spindles mostly adopts wiring to install temperature sensors to obtain temperature signals, which makes wiring difficult for some important temperature measurement points under complex working conditions of machine tools, and also affects fault detection. On the other hand, the thermal deformation monitoring of the machine tool spindle mostly uses eddy current displacement sensors to col...

AI Technical Summary

Problems solved by technology

At present, the temperature monitoring of machine tool spindles mostly uses wiring to install temperature sensors to obtain temperature signals, which makes it difficult to wire some important temperature measurement points under complex working conditions of machine tools, and also affects fault detection.

On the other hand, the thermal deformation monitoring of machine tool spindles mostly uses eddy current displacement sensors to collect displacement signals, which cannot meet the high-precision and real-time measurement requirements for thermal deformation measurement of machine tool spindles.

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