SMOOTHING ROUND INTERNAL PASSAGES OF ADDITIVELY MANUFACTURED PARTS USING METALLIC SPHERES

A method for smoothing surface roughness within an internal passageway is disclosed. In various embodiments, the method comprises developing a first sphere progression through a length of the internal passageway, each sphere within the first sphere progression having a first sphere diameter greater...

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Bibliographische Detailangaben
Hauptverfasser:	Twelves, Wendell V, Thayer, Henry H
Format:	Patent
Sprache:	eng
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING BLASTING DRESSING OR CONDITIONING OF ABRADING SURFACES ENGINE PLANTS IN GENERAL FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POLISHING STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A method for smoothing surface roughness within an internal passageway is disclosed. In various embodiments, the method comprises developing a first sphere progression through a length of the internal passageway, each sphere within the first sphere progression having a first sphere diameter greater than or equal to a diameter of the internal passageway; and developing a second sphere progression through the length of the internal passageway, each sphere within the second sphere progression having a second sphere diameter greater than the first sphere diameter, whereby the inner surface of the internal passageway is smoothed, first by the first sphere progression and then by the second sphere progression.