The impact based transportation process in a vibratory feeder
01 Jan 1999-pp 49-58
TL;DR: This paper presents a complete mechanical model of part feeding dynamics, based on unilateral constraints with Coulomb friction, that enables a theoretical investigation and consequently an improvement of the transportation process.
Abstract: Vibratory feeders are used in automatic assembly to feed small parts. They are capable to store, transport, orient, and isolate the parts. An oscillating track with frequencies up to 100 Hz excites the transportation process,that is mainly based on impact and friction phenomena between the parts and the track. This paper presents a complete mechanical model of part feeding dynamics, based on unilateral constraints with Coulomb friction. This model enables a theoretical investigation and consequently an improvement of the transportation process. The developed impact model was verified by measurements,that were carried out using a special experimental setup with laser distance measurement.
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21 Aug 1996
TL;DR: Unilateral Contact - Problem Formulation (A. Curnier).- Scalar Force Potentials in Rigid Multibody Systems (Ch. Glocker).
Abstract: THEORY. Multibody Kinematics. Dynamics of Rigid Body Systems. Contact Kinematics. Multiple Contact Configurations. Detachment and Stick-Slip Transitions. Frictionless Impacts by Newton's Law. Impacts with Friction by Poisson's Law. The Corner Law of Contact Dynamics. APPLICATIONS. Applications with Discontinuous Force Laws. Applications with Classical Impact Theory. Applications with Coulomb's Friction Law. Applications with Impacts and Friction. References. Index.
868 citations
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TL;DR: In couplings of machines and mechanisms, backlash and friction phenomena are always occurring as discussed by the authors, and whether stick-slip phenomena take place depends on the structure of such couplings.
Abstract: In couplings of machines and mechanisms, backlash and friction phenomena are always occurring. Whether stick-slip phenomena take place depends on the structure of such couplings. These processes ca...
24 citations