Mechanics of self-rotating double-disc grinding process
Artikel i vetenskaplig tidskrift, 2022

Unlike most double-disc grinding processes, which use forced workpiece rotation, some double-disc processes rely on workpiece self-rotation driven by non-uniform shear forces resulting from partial wheel-workpiece coverage. This self-rotation is poorly understood, with workpiece angular frequency remaining unknown despite its importance. This paper investigates the kinematics of self-rotation via analytical modelling of the moment-equilibrium conditions, derived from experimentally determined specific-energy values. The model showed that workpiece coverage ratio is the dominant factor governing workpiece angular frequency, allowing for the choice of optimal workpiece coverage ratios that avoid (i) workpiece-stoppage and (ii) excessive frictional heat generation. The predicted velocity was validated with acoustic-emission measurements.

Grinding

Bearing

Double disc

Författare

R. Drazumeric

International Grinding Institute

Univerza V Ljubljani

J. Badger

Grinding Doc Consulting

International Grinding Institute

Tomas Gustavsson

SKF Group

Peter Krajnik

Chalmers, Industri- och materialvetenskap, Material och tillverkning

CIRP Annals - Manufacturing Technology

0007-8506 (ISSN)

Vol. In Press

Ämneskategorier

Teknisk mekanik

Farkostteknik

Strömningsmekanik och akustik

DOI

10.1016/j.cirp.2022.03.033

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Senast uppdaterat

2022-05-05