Investigations of the space vibrations of a woodworking shaper

• Autorzy: Vukov Georgi , Gochev Zhivko

Identyfikatory

DOI

10.12841/wood.1644-3985.282.06

• Języki publikacji: EN

Abstrakty

EN

The proposed study investigates the spatial vibrations of a woodworking shaper. It presents an original mechanic-mathematical model targeted to investigations of the spatial vibrations of woodworking shapers, developed by the authors. The model considers woodworking shapers with lower placement of the spindle. In this model the woodworking shaper, the spindle and the electric motor’s rotor are regarded as rigid bodies, which are connected by elastic and damping elements with each other and with the motionless floor. The model takes into account the needed mass, inertia, elastic and damping properties of the elements of the considered system. It includes all necessary geometric parameters of this system. After that a system of matrix differential equations is compiled and analytical solutions are derived. Numerical calculations are carried out by using the developed model and modern computer programs. The calculations use the parameters of a machine used in practice. As a result of the whole study, the natural frequencies and the mode shapes of the free spatial vibrations of the studied mechanical system are calculated and illustrated. Then the free damped spatial vibrations of this system are obtained and illustrated also.

Słowa kluczowe

EN

woodworking shapers; spatial vibration

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2020
• Tom: vol. 63, nr 206
• Strony: 121--136
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Vukov Georgi

• University of Forestry, Sofia, Bulgaria

autor

Gochev Zhivko

• University of Forestry, Sofia, Bulgaria

Bibliografia

• Amirouche F. [2006]: Fundamentals of multibody dynamics – theory and applications. Birkhauser, Boston
• Angelov I. [2011]: Matrix mechanics. Dynamics, Avangard Prima, Sofia
• Barcik Š., Kvietkova M., Alač P. [2011]: Effect of the chosen parameters on deflection angle between cutting sides during the cutiing of aglomerated materials by water jet. Wood Research 56 [4]: 577-588
• Beljo-Lučić R., Goglia V. [2001]: Some possibilities for reducing circular saw idling noise. Journal of Wood Science 47 [5]: 389–393
• Coutinho M. [2001]: Dynamic simulations of multibody systems. Springer-Verlag, New York
• Filipov G. [1977]: Woodworking machines. Sofia
• Gochev Z., Vukov G. [2017]: Influence of the wearing of the saw unit elements of the wood shaper on the system vibration. Acta Facultatis Xylologiae Zvolen 59 [2]: 147-153
• Gochev Z., Vukov G., Vitchev P., Atanasov V., Kovachev G. [2017]: Influence of the cutting mode on the overall vibrations generated by the woodworking milling machine. Annals of Warsaw University of Life Science – SGGW, Forestry and Wood Technology 98: 33-42
• Kminiak R., Siklienka M., Šustek J. [2016]: Impact of tool wear on the quality of the surface in routing of MDF boards by milling machines with reversible blades. Acta Facultatis Xylologiae Zvolen 58 [2]: 89-100
• Minchev N., Grigorov V. [1998]: Vibrodiagnostics of rotary and piston machines. Technique, Sofia
• Nikravesh P. [1988]: Computer-aided analysis of mechanical systems. Prentice Hall, New Jersey
• Obreshkov P. [1996]: Woodworking machines. Sofia
• Orlowski K., Sandak J., Tanaka C. [2007]: The critical rotational speed of circular saw: simple measurement method and its practical implementations. Journal of Wood Science 53 [5]: 388-393
• Shabana A. [2005]: Dynamics of multibody systems. Cambridge University Press, New York
• Stevens D. [2007]: Machinery vibration diagnostics NGUYEN. Troy
• Veits V., Kochura А., Martinenko А. [1971]: Dynamical investigations of drive machines. Moscow
• Vukov G., Gochev Z., Slavov V. [2016]: Mechanic-mathematical model for investigations of the free damped spatial vibrations of wood shaper and its spindle. Proceedings of the IInd International Furniture Congress, Mugla, Turkey, October 13th-15th: 216-219

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).