JIG FOR CORRECTING DISTORTION IN SPECIAL SHAPED PIPE

PURPOSE:To rationalize the correction of the distortion (roundness) in an insert hole, etc., of a special shaped pipe. CONSTITUTION:A rotary shaft 2, fixed crossing perpendicular to a hydraulic jack 1 provided with pressing surfaces 11, 12 for pressing the pipe wall at both ends, is supported rotata...

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Bibliographische Detailangaben
Hauptverfasser:	UEMATSU YASUO, SUWA KENJI, KO NOBUMOTO
Format:	Patent
Sprache:	eng
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To rationalize the correction of the distortion (roundness) in an insert hole, etc., of a special shaped pipe. CONSTITUTION:A rotary shaft 2, fixed crossing perpendicular to a hydraulic jack 1 provided with pressing surfaces 11, 12 for pressing the pipe wall at both ends, is supported rotatably in a bearing 3. The direction of the working shaft of the hydraulic jack 1 is adjusted by loosening a handles 5 and fixed by fastening the hydraulic jack. The bearing is fixed to an arm 41 and the tip part of the arm is supported in air with a hanging means 4. The hydraulic jack 1 is charged in the object special shaped pipe by driving the hanging means 4 and the working shaft is matched with the mirror diameter direction of the insert hole deformed to the elliptical shape to fix the position. The mirror diameter part is pushed outside by a prescribed quantity to correct the elliptical shape into the circular shape. The distortion of the special shaped pipe having a shape unstable for a work of single worker can perfectly be corrected and this jig is extremely effective to improve the working efficiency and the safety in the workshop.