JPS57199527A - Collar forming method on a part of pipe wall - Google Patents

Collar forming method on a part of pipe wall

Info

Publication number
JPS57199527A
JPS57199527A JP8435281A JP8435281A JPS57199527A JP S57199527 A JPS57199527 A JP S57199527A JP 8435281 A JP8435281 A JP 8435281A JP 8435281 A JP8435281 A JP 8435281A JP S57199527 A JPS57199527 A JP S57199527A
Authority
JP
Japan
Prior art keywords
collar
collar part
hole
inside diameter
jig
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8435281A
Other languages
Japanese (ja)
Inventor
Osamu Yamada
Teruo Matsumoto
Hideo Yonemura
Kazumi Kikuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8435281A priority Critical patent/JPS57199527A/en
Publication of JPS57199527A publication Critical patent/JPS57199527A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE:To mold a collar part having a prescribed inside diameter, by making a beforehand hole on a pipe wall, forming a collar part having a small diameter, and subsequently making a prescribed jig pass through the hole. CONSTITUTION:As the first process, a jig 2 having an almost conical side or a semispherical side is passed through a hole, and a primary working collar part 4 having a ratio d/D<1 of a collar inside diameter (d) and a base pipe inside diameter D is formed. Subsequently, as the second process, a secondary working collar part 4 is worked by a rotary jig 3, and a collar part 5 of d/D=1 is formed. According to said constitution, the height of the collar is increased, a welding work is elevated, the thickness reduction ratio is decreased, and mechanical strength of a branch pipe joint part is elevated remarkably.
JP8435281A 1981-06-03 1981-06-03 Collar forming method on a part of pipe wall Pending JPS57199527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8435281A JPS57199527A (en) 1981-06-03 1981-06-03 Collar forming method on a part of pipe wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8435281A JPS57199527A (en) 1981-06-03 1981-06-03 Collar forming method on a part of pipe wall

Publications (1)

Publication Number Publication Date
JPS57199527A true JPS57199527A (en) 1982-12-07

Family

ID=13828118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8435281A Pending JPS57199527A (en) 1981-06-03 1981-06-03 Collar forming method on a part of pipe wall

Country Status (1)

Country Link
JP (1) JPS57199527A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6084517U (en) * 1983-11-17 1985-06-11 三甲株式会社 collapsible container
EP0752289A2 (en) * 1995-06-05 1997-01-08 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
US6000263A (en) * 1995-06-05 1999-12-14 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
CN102350468A (en) * 2011-08-10 2012-02-15 中山市奥美森工业技术有限公司 Draw-hole device
CN104942041A (en) * 2015-06-19 2015-09-30 沧州隆泰迪管道科技有限公司 T-shaped large-diameter composite tee joint technology
CN109175902A (en) * 2018-09-21 2019-01-11 北京长城华冠汽车科技股份有限公司 The manufacturing process of beam upper installing hole

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6084517U (en) * 1983-11-17 1985-06-11 三甲株式会社 collapsible container
EP0752289A2 (en) * 1995-06-05 1997-01-08 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
EP0752289A3 (en) * 1995-06-05 1997-11-26 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
US5943773A (en) * 1995-06-05 1999-08-31 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
US6000263A (en) * 1995-06-05 1999-12-14 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
CN102350468A (en) * 2011-08-10 2012-02-15 中山市奥美森工业技术有限公司 Draw-hole device
CN104942041A (en) * 2015-06-19 2015-09-30 沧州隆泰迪管道科技有限公司 T-shaped large-diameter composite tee joint technology
CN109175902A (en) * 2018-09-21 2019-01-11 北京长城华冠汽车科技股份有限公司 The manufacturing process of beam upper installing hole

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