MANUFACTURING METHOD OF METAL PIPE, AND DEVICE THEREFOR
PROBLEM TO BE SOLVED: To manufacture a metal pipe 1 having a straight part having a fixed pipe diameter, and a cone-shaped part successive thereto, from a metallic plate 5 having a straight part formation part, and a cone-shaped part formation part successive thereto.SOLUTION: A U-shaped metallic pl...
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Format | Patent |
Language | English Japanese |
Published |
24.05.2018
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Abstract | PROBLEM TO BE SOLVED: To manufacture a metal pipe 1 having a straight part having a fixed pipe diameter, and a cone-shaped part successive thereto, from a metallic plate 5 having a straight part formation part, and a cone-shaped part formation part successive thereto.SOLUTION: A U-shaped metallic plate 22 is obtained from a metallic plate 5 by U-bending. An inward falling part 32 in which a prescribed range including a boundary between a straight part formation part and a cone-shaped part formation part is bent inward is formed on each facing side wall 28 of the U-shaped metallic plate 22. Thereafter, the U-shaped metallic plate 22 is O-bent by a pair of split patterns each having an arc-shaped molding surface, to thereby obtain a metal pipe 1.SELECTED DRAWING: Figure 4
【課題】管径が一定のストレート部とこれに続くコーン状部を有する金属管1を、ストレート部形成部とこれに続くコーン状部形成部を有する金属平板5から製造する。【解決手段】金属平板5からU曲げ成形によってU字状金属板22を得る。このU字状金属板22の相対する側壁28各々に、ストレート部形成部とコーン状部形成部との境界部を含む所定範囲が内側に倒れた内倒れ部32を形成する。しかる後、円弧状成形面を有する一対の割型でU字状金属板22をO曲げ成形することによって金属管1を得る。【選択図】図4 |
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AbstractList | PROBLEM TO BE SOLVED: To manufacture a metal pipe 1 having a straight part having a fixed pipe diameter, and a cone-shaped part successive thereto, from a metallic plate 5 having a straight part formation part, and a cone-shaped part formation part successive thereto.SOLUTION: A U-shaped metallic plate 22 is obtained from a metallic plate 5 by U-bending. An inward falling part 32 in which a prescribed range including a boundary between a straight part formation part and a cone-shaped part formation part is bent inward is formed on each facing side wall 28 of the U-shaped metallic plate 22. Thereafter, the U-shaped metallic plate 22 is O-bent by a pair of split patterns each having an arc-shaped molding surface, to thereby obtain a metal pipe 1.SELECTED DRAWING: Figure 4
【課題】管径が一定のストレート部とこれに続くコーン状部を有する金属管1を、ストレート部形成部とこれに続くコーン状部形成部を有する金属平板5から製造する。【解決手段】金属平板5からU曲げ成形によってU字状金属板22を得る。このU字状金属板22の相対する側壁28各々に、ストレート部形成部とコーン状部形成部との境界部を含む所定範囲が内側に倒れた内倒れ部32を形成する。しかる後、円弧状成形面を有する一対の割型でU字状金属板22をO曲げ成形することによって金属管1を得る。【選択図】図4 |
Author | TAKAHASHI HIROYUKI KAWAGUCHI HIDEAKI NAKATSUCHI NOBUYUKI |
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DocumentTitleAlternate | 金属管の製造方法及びその装置 |
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Snippet | PROBLEM TO BE SOLVED: To manufacture a metal pipe 1 having a straight part having a fixed pipe diameter, and a cone-shaped part successive thereto, from a... |
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SubjectTerms | 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 |
Title | MANUFACTURING METHOD OF METAL PIPE, AND DEVICE THEREFOR |
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