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AssigneeQED Technologies, Inc.
InventorsWilliam I. Kordonski, Donald Golini, Stephen Hogan, Paul R. Dumas
Estimating the term…
An improved system for increasing the effectiveness of magnetorheological finishing of a substrate. An inline flowmeter is close-loop linked to the rotational speed of a pressurizing pump to assure that the flow of magnetorheological fluid (MRF) to the work zone is constant. A simplified capillary viscometer is disposed in the fluid delivery system at the exit thereof onto the wheel surface. Output signals from the flowmeter and the viscometer pressure sensor are sent to a computer which calculates the viscosity of MRF being delivered to the work zone and causes replenishment of carrier fluid to the work-concentrated MRF to return the viscosity to aim to assure that a constant concentration of magnetic solids is being provided to the work zone. Asymmetric pole pieces for the field magnet at the work zone extend the magnetic field along the wheel surface upstream of the work zone to permit full magnetic stiffening of the MRF before it engages the work piece, while minimizing fringing field in the vicinity of the viscometer, and to shorten the magnetic field along the wheel surface downstream of the work zone.
A system for magnetorheological finishing of substrates wherein a fluid delivery system provides a substantially constant flowrate of magnetorheological fluid having a substantially constant viscosity to a work zone at the rim of a carrier wheel, said fluid delivery system having a fluid exit onto said carrier wheel and a fluid entrance from said carrier wheel, comprising:
A fluid delivery system for providing a substantially uniform flow of magnetorheological fluid having a substantially constant viscosity to a work zone for magnetorheological finishing of substrates, comprising:
Dependencies are inferred from the claim text.