Author, institution: Edvardas Sadauskas, Kaunas University of Technology
Science area, field: Technological Sciences, Mechanical Engineering
The Doctoral Dissertation is available at the library of Kaunas University of Technology (K. Donelaičio St. 20, Kaunas).
Scientific Supervisor:
Prof. Dr. Habil. Bronius BAKŠYS (Kaunas University of Technology, Technological Sciences, Mechanical Engineering – 09T).
Dissertation Defense Board of Mechanical Engineering Science Field:
Dr. Habil. Algimantas BUBULIS (Kaunas University of Technology, Technological Sciences, Mechanical Engineering – 09T) – chairman;
Assoc. Prof. Dr. Giedrius JANUŠAS (Kaunas University of Technology, Technological Sciences, Mechanical Engineering – 09T);
Prof. Dr. Habil. Genadijus KULVIETIS (Vilnius Gediminas Technical University, Technological Sciences, Mechanical Engineering – 09T);
Prof. Dr. Juozas PADGURSKAS (Aleksandras Stulginskis University, Technological Sciences, Mechanical Engineering – 09T);
Prof. Dr. Habil. Arvydas PALEVIČIUS (Kaunas University of Technology, Technological Sciences, Mechanical Engineering – 09T).
Annotation:
Alignment is the most important stage in automated assembly process, which compensates position offset between mating parts. Only automated assembly lines could reduce manufacture cost of the products, ensure high quality of the goods, facilitate working conditions and eliminate exhausting and monotonic manual assembly tasks.
In this work presented new approach of mutual part alignment when peg’s elastic vibrations are used. This is technologically simpler way of part alignment comparing to other active and passive alignment methods. The peg fixed in a gripper and elastic vibrations excited in longitudinal direction by mean of the pressed piezoelectric vibrator. Friction forces between bush and vibrating peg’s tip ensures directional linear and rotational motion of the bush.
It was approved that it is possible to do part alignment using elastic vibrations when peg is excited in axial direction by mean of piezoelectric vibrator. Position offset of few millimetres could be compensated for the parts with circular and rectangular cross-section as well as for the chamfered and chamferless parts. Obtained investigation results allow setting proper excitation and mechanical system parameters for the alignment process to be stable, reliable and time efficient.
