SPINDLE UNIT DIAGNOSTICS METHOD Russian patent published in 2015 - IPC B23Q17/00 G01M13/00 

FIELD: measurement equipment.

SUBSTANCE: method includes a fixing on a bed of a spindle head with a spindle unit, registatrtion of signals from oscillation sensors and their sending through the amplifying and converting equipment into the computer. For improvement of accuracy of diagnostics a cylindrical work-piece with longitudinal groove is fixed in the spindle, then cutting is performed, the oscillations are measured by dynamometers mounted on the measurement unit, and the sensor installed on the spindle head sends their signals to the computer by means of which the response of the spindle head to the input effect is registered and analyzed and the ratio of effective amplitudes taken from the response signal on the spindle head is determined on the sections of record of the vibrations corresponding to the beginning of cutting after passing of the groove and the section of record of the vibrations corresponding to the end of cutting before exiting to the groove, and the moments of the beginning and the end of cutting are determined by change of the oscillation signal from the instrument unit.

EFFECT: improvement of accuracy of diagnostics.

6 dwg