GB509188A - Process and apparatus for expanding tubes - Google Patents

Process and apparatus for expanding tubes

Info

Publication number
GB509188A
GB509188A GB15303/38A GB1530338A GB509188A GB 509188 A GB509188 A GB 509188A GB 15303/38 A GB15303/38 A GB 15303/38A GB 1530338 A GB1530338 A GB 1530338A GB 509188 A GB509188 A GB 509188A
Authority
GB
United Kingdom
Prior art keywords
tube
mandrel
stroke
expanding
clamp
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.)
Expired
Application number
GB15303/38A
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.)
Vodafone GmbH
Original Assignee
Mannesmannroehren Werke AG
Mannesmann AG
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 Mannesmannroehren Werke AG, Mannesmann AG filed Critical Mannesmannroehren Werke AG
Publication of GB509188A publication Critical patent/GB509188A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00Application of procedures in order to alter the diameter of tube ends
    • B21D41/02Enlarging

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

509,188. Making tubes. MANNES MANNROHREN-WERKE. May 23, 1938, No. 15303. Convention date, May 28, 1937. [Classes 83 (ii) and 83 (iv)] Drawing; tube expanders.- In apparatus for expanding tubes by a mandrel, the tube is clamped at a part which has already been expanded and the mandrel is given a relatively short -stroke reciprocating movement, the tube being held fixed during the expanding stroke and moved with the mandrel during the idle stroke. In one form of machine, Fig. 2, the mandrel a is reciprocated by a driving crank b and the tube d issuing from a furnace c is held by a clamp f during the expanding stroke. On the idle stroke the mandrel carries the tube backwards. If desired, any irregularities due to the clamp may be removed by a die ring o and in order to move the tube through the ring an auxiliary clamping device p is provided and is moved backwards by rods r on the idle stroke of the mandrel. In order to avoid preliminary expanding of the end of the tube before placing it in the machine, the machine may be provided, as shown in Fig. 4, with a secondary clamp f<1> in front of the mandrel and operative only until the expanded end of the tube engages with the main clamp f. Both clamping devices f and f are operated hydraulically, the plungers u<1> and u<2> being pressed against the tube on the expanding stroke of the mandrel and released on the idle stroke by means of a piston t operated from the crank b. A die ring o also driven from the crank b may be provided.
GB15303/38A 1937-05-28 1938-05-23 Process and apparatus for expanding tubes Expired GB509188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE509188X 1937-05-28

Publications (1)

Publication Number Publication Date
GB509188A true GB509188A (en) 1939-07-12

Family

ID=6547147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15303/38A Expired GB509188A (en) 1937-05-28 1938-05-23 Process and apparatus for expanding tubes

Country Status (1)

Country Link
GB (1) GB509188A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536632A1 (en) * 1991-10-09 1993-04-14 C.B.C. S.p.A. Pipe bending machine with an auxiliary mechanism for performing supplementary operations
EP2111935A1 (en) * 2008-04-22 2009-10-28 Impress Group B.V. Method and apparatus for radially expanding a container body, such radially expanded container body and a container comprising such container body

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536632A1 (en) * 1991-10-09 1993-04-14 C.B.C. S.p.A. Pipe bending machine with an auxiliary mechanism for performing supplementary operations
EP2111935A1 (en) * 2008-04-22 2009-10-28 Impress Group B.V. Method and apparatus for radially expanding a container body, such radially expanded container body and a container comprising such container body
WO2009130034A1 (en) * 2008-04-22 2009-10-29 Impress Group B.V. Method and apparatus for radially expanding a container body, such radially expanded container body and a container comprising such container body
US9409224B2 (en) 2008-04-22 2016-08-09 Impress Group B.V. Method and apparatus for radially expanding a container body, such radially expanded container body and a container comprising such container body

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