METHOD AND APPARATUS FOR MEASURING FLOW RATE THROUGH AND POLISHING A WORKPIECE ORIFICE

Title:

METHOD AND APPARATUS FOR MEASURING FLOW RATE THROUGH AND POLISHING A WORKPIECE ORIFICE

Document Type and Number:

WIPO Patent Application WO2005031276

Kind Code:

A3

Abstract:

A method and apparatus for comparing the flow rate through an orifice within a master part with the orifice within a workpiece by subjecting each orifice to an identical fluid at an identical temperature, under an identical pressure, and comparing the downstream pressures of the fluid exiting these orifices when the upstream pressure is constant or comparing the upstream pressure when the downstream pressure is constant. For purely measurement purposes, the fluid may be a non-abrasive media, however, in the event the workpiece orifice must be machined, it is possible to introduce a flowable abrasive media, and pass this media through the orifices until the desired pressure difference is achieved. With additional flow characteristics of the master part, it is also possible to calculate the flow rate through the workpiece orifice using only the pressure differential at the exits of the workpiece and the master part.

Inventors:

GREENSLET JOHN M (US)
RHOADES LAWRENCE J (US)

Application Number:

PCT/US2004/031113

Publication Date:

June 02, 2005

Filing Date:

September 23, 2004

Export Citation:

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Assignee:

EXTRUDE HONE CORP (US)
GREENSLET JOHN M (US)
RHOADES LAWRENCE J (US)

International Classes:

B24B1/00; B24B7/19; B24B7/30; B24B15/00; B24B19/00; G01F7/00; G01F; (IPC1-7): B24B1/00; B24B7/19; B24B7/30; B24B15/00; B24B19/00; G01F7/00

Foreign References:

US5054247A	1991-10-08
US5076027A	1991-12-31
US5807163A	1998-09-15
US6306011B1	2001-10-23
US6500050B2	2002-12-31

Other References: