Closed main shaft eccentric movement monitoring device and method

Abstract

The invention provides a closed main shaft eccentric movement monitoring device. The closed main shaft eccentric movement monitoring device comprises a sensor assembly, a reflector assembly and a data acquisition instrument, the sensor assembly comprises a horizontal laser sensor and a vertical laser sensor, the reflector assembly comprises a horizontal reflector and a vertical reflector, and the workbench and the closed main shaft are coaxially and fixedly connected. The invention further provides a closed spindle eccentric movement monitoring method, and according to the method, whether the closed spindle coaxially and fixedly connected with the workbench is eccentric and moves or not is judged by obtaining the horizontal displacement data reflecting whether the workbench is eccentric or not and the vertical displacement data reflecting whether the workbench is moved or not. The system has the advantages that the running state of the closed main shaft is obtained through data acquisition and real-time monitoring, real-time monitoring, fault diagnosis and intelligent early warning of the running state of equipment are achieved, and meanwhile the influence on the monitoring precision of the laser sensor due to the fact that the precision of the outer ring of the workbench and the upper surface of the workbench is not high can be avoided.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to a closed-type spindle eccentric movement monitoring device and method. Background technique [0002] With the continuous increase of large-scale infrastructure investment, the annual sales of machine tools in my country have shown a trend of gradual increase, and the industrial upgrading of the manufacturing industry has also further increased the demand for machine tools. For CNC machine tools, if the spindle of the worktable has abnormal eccentricity and movement during work, it will not only affect the normal operation of the machine tool, but also reduce the processing quality of the manufacturing object, and even cause serious consequences such as machine tool damage and production accidents. However, in order to avoid damage and erosion in the exposed environment, the spindle of the worktable of the CNC machine tool is sealed in the large metal machine tool shell, and the eccen...

AI Technical Summary

Problems solved by technology

For CNC machine tools, if the spindle of the worktable produces abnormal eccentricity and movement during work, it will not only affect the normal operation of the machine tool, but also reduce the processing quality of the manufacturing object, and even cause serious consequences such as machine tool damage and production accidents.

However, in order to avoid damage and erosion in the exposed environment, causing production safety accidents and equipment failures, the spindle of the workbench of the CNC machine tool is sealed in a large metal machine tool shell, and it is impossible to directly monitor the eccentricity and movement of the closed spindle. monitor

[0003] In the prior art, although there are spindle monitoring methods for CNC machine tools, such methods generally monitor the eccentricity and movement of the spindle of the machine tool by arranging contact sensors or laser displacement sensors after destroying the shell structure of the machine tool, without involving Monitor the eccentricity and movement of the enclosed spindle

Destroying the shell of the machine tool not only increases the risk of damage to the equipment and affects the normal use of the equipment, but also leads to the inability to effectively identify the relevant faults of the spindle, reducing the function of machine tool fault diagnosis and predictive maintenance

At the same time, the monitoring in the prior art cannot provide effective data for subsequent fault diagnosis, and cannot eliminate the error of equipment processing

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