IDENTIFICATION OF SPINDLE VIBRATION BY RESULTS OF MEASURED SPINDLE UNIT BODY VIBRATION

Ю. М. Данильченко, А. И. Петришин

Abstract


Purpose. Developed a method of spindle vibrations identification by measuring the vibrations of spindle body using estimated  transfer functions.

Design/Methodology/Approach. Research is being performed of spindle unit vibrations under the effect of internal sources of vibroexcitation – spindle bearings. The procedure of transfer functions determining is reviewed using example of modeling of dynamical compliances of the mechanical vibration system, which consists of subsystems: mandrel, spindle on rolling supports, spindle body and frame, elastically mounted on massive foundation. Vibrational excitation, as a unit harmonic force, applied at the location of the first bearing of spindle leading support. Transfer functions are obtained by solving the system of equations of strain compatibility at the points of subsystem disconnection.

Findings. Obtained experimental spectrum of spindle unit body vibrations; performed calculation of transfer functions and modeling of theoretical vibration spectrum of the spindle.

Originality/value. Established, that difference of the same harmonic excitation sustaining by various mechanical systems leads to zones with different intensity of vibration appearing in their vibration spectrums.


Keywords


spindle unit; mechanical vibration system; dynamic compliance

References


Heui Jae Pahk, Hyun Jang Shin A New Method for Characterisation for the 5 DOF Spindle Volumetric Error Motions in Machine Tools / http://www.aspe.net/publications/Annual_1999/POSTERS/METROL/MODEL/PAHK2.PDF

Charles Wang A new laser non-contact method for the measurement of spindle error motion / Technical Article, March 2001 / http://www.optodyne.it/inglese/publications/TA006E-Spindle%20paper.pdf.

Nakkiew, W., Lin, C. W., and Tu, J. F. A New Method to Measure Runout of Motorized End-Milling Spindles at Very High Speed Rotations http://www.aspe.net/publications/Annual_2003/PDF/3metro/5measu/1147.PDF

Danil'chenko Ju.M., Dorozhko A.O., Petrishin A.I. Vestnik MGTU «Stankin» [Vestnik MSTU “STANKIN”] № 1 (28), 2014, pp. 81-91. 5. Biderman V.L. Prikladnaja teorija mehanicheskih kolebanij: Ucheb. posobie dlja vtuzov. [Applied theory of mechanical vibrations: a manual for technical colleges]. Moscow: Mashinostroenie, 1972, 416 p.


GOST Style Citations


1. Heui Jae Pahk, Hyun Jang Shin A New Method for Characterisation for the 5 DOF Spindle Volumetric Error Motions in Machine Tools / http://www.aspe.net/publications/Annual_1999/POSTERS/METROL/MODEL/PAHK2.PDF

 

2. Charles Wang A new laser non-contact method for the measurement of spindle error motion / Technical Article, March 2001 / http://www.optodyne.it/inglese/publications/TA006E-Spindle%20paper.pdf.

 

3. Nakkiew, W., Lin, C. W., and Tu, J. F. A New Method to Measure Runout of Motorized End-Milling Spindles at Very High Speed Rotations http://www.aspe.net/publications/Annual_2003/PDF/3metro/5measu/1147.PDF

 

4. Данильченко Ю.М. Исследование динамических характеристик механической системы «шпиндельный узел» /Данильченко Ю.М., Дорожко А.О., Петришин А.И. // Вестник МГТУ «Станкин» № 1 (28), 2014. – С. 81-91. 5. Бидерман В.Л. Прикладная теория механических колебаний: Учеб. пособие для втузов. - М.: Машиностроение, 1972. – 416





DOI: http://dx.doi.org/10.20535/2305-9001.2014.71.35856

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