Abstract
In this study, the machining rate characteristics of the hydrodynamic polishing process (abbreviated as the HDP process) under various lubrication conditions are examined. It is proposed that for the non-contact case the machining rate of the HDP process is related to the shear stress of slurry flow between tool and work surface. A large shear stress will result in a large machining rate. The elastohydrodynamic lubrication theory is applied to analyze the shear stress and machining rate of this process under various lubrication conditions. It is shown that the tool angular velocity or slurry viscosity has a positive effect on the machining rate when the lubrication is in the IE regime. On the other hand, the velocity or viscosity become a negative factor of machining rate if the lubrication is in the IR regime. The applied load is a positive factor of machining rate, irrespective of the lubrication regime. The experimental study shows that the qualitative machining rate behaviors of the HDP process can be well predicted by the elastohydrodynamic lubrication theory. It is concluded that the key factor dominating the machining rate is the shear stress of slurry flow.
Published Version
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