EP0334295A3 - Method and apparatus for shaping tubular bodies - Google Patents

Method and apparatus for shaping tubular bodies Download PDF

Info

Publication number
EP0334295A3
EP0334295A3 EP19890105047 EP89105047A EP0334295A3 EP 0334295 A3 EP0334295 A3 EP 0334295A3 EP 19890105047 EP19890105047 EP 19890105047 EP 89105047 A EP89105047 A EP 89105047A EP 0334295 A3 EP0334295 A3 EP 0334295A3
Authority
EP
European Patent Office
Prior art keywords
tubular body
mandrel
blank
tubular
partly
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.)
Withdrawn
Application number
EP19890105047
Other languages
German (de)
French (fr)
Other versions
EP0334295A2 (en
Inventor
Egon Evertz
Rolf Prof. Dr. Ing. Seybold
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0334295A2 publication Critical patent/EP0334295A2/en
Publication of EP0334295A3 publication Critical patent/EP0334295A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally
    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • 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
    • B21C37/155—Making tubes with non circular section

Abstract

Die Erfindung bezieht sich auf ein Verfahren zum Ziehen von mit rechteckigem Querschnitt ausgeführten Rohrkörpern 7 aus rohrförmi­ gen, runden Rohlingen 4. Während bekannte Verfahren dieser Art die Aufbringung des Rohlings 4 auf einen das Innenmaß des Rohrkörpers 7 vorgebenden Dorn durch Kaltumformung vorsehen, wobei der Dorn von mindestens gleicher Länge wie der Rohrkörper 7 sein muß und ab­ schließend durch einen zusätzlichen Arbeitsvorgang aus dem Rohr­ körper 7 herausgedrückt werden muß, sieht die Erfindung insofern eine Vereinfachung vor, als der Umfang des Rohlinges 4 und des späteren Rohrkörpers 7 gleich gehalten werden, und die Umformung im Stopfenzugverfahren teils durch Aufweitung und teils durch Stau­ chung des Rohlings 4 durchgeführt wird, so daß man mit einem ein­ zigen Umformvorgang zum fertigen Rohrkörper 7 kommt, der dann ohne einen erst noch von ihm zu lösenden Dorn erzeugt wird. The invention relates to a method for pulling with rectangular cross-section of tubular bodies 7 made of tubular round blanks 4. While known processes of this type the Application of the blank 4 to the inside dimension of the tubular body 7 Provide the mandrel by cold working, the mandrel from must be at least the same length as the tubular body 7 and from closing by an additional process from the pipe body 7 must be pushed out, sees the invention in this respect a simplification before than the size of the blank 4 and the later tubular body 7 are kept the same, and the deformation in Stopper pulling process partly by widening and partly by traffic jam chung of the blank 4 is performed so that one with a umigen forming process for the finished tubular body 7, which then without a mandrel that has yet to be released is generated.

EP19890105047 1988-03-25 1989-03-21 Method and apparatus for shaping tubular bodies Withdrawn EP0334295A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3810033 1988-03-25
DE19883810033 DE3810033A1 (en) 1988-03-25 1988-03-25 METHOD AND TOOL FOR DRAWING TUBE BODIES

Publications (2)

Publication Number Publication Date
EP0334295A2 EP0334295A2 (en) 1989-09-27
EP0334295A3 true EP0334295A3 (en) 1990-10-17

Family

ID=6350625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890105047 Withdrawn EP0334295A3 (en) 1988-03-25 1989-03-21 Method and apparatus for shaping tubular bodies

Country Status (2)

Country Link
EP (1) EP0334295A3 (en)
DE (1) DE3810033A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685636A (en) * 1928-01-20 1928-09-25 Kemp Joseph Tube-drawing plug
CH495799A (en) * 1968-11-19 1970-09-15 Kabel Metallwerke Ghh Process for the production of a permanent mold made of a metallic tube for continuous casting machines
DE2806368A1 (en) * 1978-02-10 1979-08-16 Mannesmann Ag Tube cold drawing tool - uses consecutive hollow-, plug-, hollow-, and rod drawing elements
GB2151162A (en) * 1983-12-14 1985-07-17 Tubi Italia Spa Method for preparing tubular chills for continuous steel casting plants

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE843834C (en) * 1944-04-19 1952-07-14 Deutsche Edelstahlwerke Ag Method and device for drawing hollow bodies

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685636A (en) * 1928-01-20 1928-09-25 Kemp Joseph Tube-drawing plug
CH495799A (en) * 1968-11-19 1970-09-15 Kabel Metallwerke Ghh Process for the production of a permanent mold made of a metallic tube for continuous casting machines
DE2806368A1 (en) * 1978-02-10 1979-08-16 Mannesmann Ag Tube cold drawing tool - uses consecutive hollow-, plug-, hollow-, and rod drawing elements
GB2151162A (en) * 1983-12-14 1985-07-17 Tubi Italia Spa Method for preparing tubular chills for continuous steel casting plants

Also Published As

Publication number Publication date
EP0334295A2 (en) 1989-09-27
DE3810033A1 (en) 1989-10-05

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