Abrasive flow machining method and article
AssigneeRtx Corporation
InventorsWendell V. Twelves, Joe Ott, Evan Butcher, John P. Rizzo, Jr.
Life of this patent
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Abstract
A method for abrasive flow machining includes moving an abrasive media through a high-aspect passage of a workpiece. Local pressure of the abrasive media is increased at target abrasion surfaces of the high-aspect passage using a passage geometry that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into.
Claims18
A method for abrasive flow machining, the method comprising:
- moving an abrasive media though a high-aspect passage of a workpiece;
- increasing local pressure of the abrasive media at target abrasion surfaces of the high-aspect passage using a passage geometry of the workpiece that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into, wherein the high-aspect passage has a lateral dimension and a passage length from a passage inlet to a passage outlet, and a ratio of the passage length to the lateral dimension is 4:1 or greater;
- and
- pressurizing an exterior of the workpiece.
A method for abrasive flow machining, the method comprising:
- moving an abrasive media though a high-aspect passage of a workpiece;
- and
- increasing local pressure of the abrasive media at target abrasion surfaces of the high-aspect passage using a passage geometry of the workpiece that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into, wherein the passage geometry includes a helical shape of the passage.
A method for abrasive flow machining, the method comprising:
- moving an abrasive media though a high-aspect passage of a workpiece;
- and
- increasing local pressure of the abrasive media at target abrasion surfaces of the high-aspect passage using a passage geometry of the workpiece that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into, further comprising pressurizing an exterior of the workpiece.
Dependencies are inferred from the claim text.