Comprehensive monitoring system and method for temperature and thermal deformation of high-speed numerically-controlled lathe

Abstract

The invention discloses a comprehensive monitoring system for temperature and thermal deformation of a high-speed numerically-controlled lathe, which comprises a data acquisition module, a data processing module and sensors, wherein the sensors are arranged on a motorized spindle and a cutting tool for monitoring the temperature or the thermal deformation of the motorized spindle and the cutting tool; temperature or thermal deformation signals acquired by the sensors are transmitted to the data acquisition module through a signal conditioning circuit, and then provided for the data processingmodule to be processed after analog-to-digital conversion. The comprehensive monitoring system for temperature and thermal deformation of the high-speed numerically-controlled lathe is characterized in that the sensors comprise infrared temperature sensors, platinum-rhodium wire temperature sensor groups, Pt100 temperature sensor groups and laser displacement sensor groups; the platinum-rhodium wire temperature sensor group are arranged on at least three faces of the blade of the cutting tool of the high-speed numerically-controlled lathe; the Pt100 temperature sensor groups are arranged on at least three faces of the handle of the cutting tool of the high-speed numerically-controlled lathe; the infrared temperature sensors are arranged on the side faces of the motorized spindle of the high-speed numerically-controlled lathe; and the laser displacement sensors are positioned on the axial extension line of the motorized spindle of the high-speed numerically-controlled lathe for monitoring axial thermal deformation of the motorized spindle and thermal deformation of the tip of the cutting tool.

Description

technical field [0001] The invention belongs to the technical field of dynamic testing and research of high-speed numerical control lathes, and in particular relates to a temperature and thermal deformation comprehensive monitoring system and monitoring method during the processing of high-speed numerical control lathes. Background technique [0002] High-speed CNC lathe is a high-speed motion high-precision, high-automation, high-flexibility manufacturing equipment. However, with the continuous development of manufacturing technology, people have put forward higher and higher requirements for the precision and reliability of CNC lathes, and the precision and high speed of lathes have become an irresistible development trend. In precision machining, the manufacturing error caused by the thermal deformation of the lathe accounts for 40% to 70% of the total error. In high-speed CNC lathes, the main factors affecting the thermal deformation of the lathe are the thermal deforma...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a temperature and thermal deformation monitoring and analysis method for high-speed numerical control lathes, which solves the problems that the current monitoring method is single, it is difficult to achieve high-precision measurement and real-time measurement

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