GB1349238A - Swaging machine for the internal profiling of tubular workpieces - Google Patents

Swaging machine for the internal profiling of tubular workpieces

Info

Publication number
GB1349238A
GB1349238A GB1825272A GB1825272A GB1349238A GB 1349238 A GB1349238 A GB 1349238A GB 1825272 A GB1825272 A GB 1825272A GB 1825272 A GB1825272 A GB 1825272A GB 1349238 A GB1349238 A GB 1349238A
Authority
GB
United Kingdom
Prior art keywords
tube
pressure
piston
mandrel
swaging
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
GB1825272A
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.)
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Original Assignee
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau 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 GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG filed Critical GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Publication of GB1349238A publication Critical patent/GB1349238A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • 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
    • B21C37/152—Making rifle and gunbarrels
    • B21C37/153—Making tubes with inner- and/or outer guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact

Abstract

1349238 Swaging GFM GES FUR FERTIGUNGSTECHNIK UND MASCHINENBAU AG 19 April 1972 [6 May 1971] 18252/72 Heading B3H In a swaging machine for the internal profiling of a tube 13, e.g. a firearm barrel, wherein the tube 13 is positioned on a stepped mandrel 28 between a holder 24 subjected to a constant hydraulic back pressure and a gripping head 4 which rotate and feed the tube 13 to swaging dies 1, the gripping head 4 contains a cushion of liquid 14 under pressure for supporting the tube 13 through the intermediary of a hollow piston 12, the liquid pressure being reduced when a shoulder 2811 on the mandrel 28 reaches the dies 1. The piston 12 is slidably mounted in a sleeve 10 to form a chamber 14 which is supplied with liquid by a pump 15, the pressure being initially controlled by a valve 18. The sleeve 10 is rotated by a motor 11 whilst the head 14 is moved by piston and cylinder devices 5, 6, 7, towards the swaging dies 1 which co-operate with a mandrel portion 28<SP>1</SP> to form grooves in the inner surface of the tube 13. The other tube holder 24 is connected to a piston 23 of a cylinder 22 the pressure in which is controlled by a valve 26 during movement of the holder 24 away from the dies 1. When the sleeve 10 engages the end of the mandrel 28, the latter is moved by the head 4 against the action of hydraulic pressure in a cylinder 29. As soon as the mandrel shoulder 28<SP>11</SP> reaches the swaging dies 1, a limit switch is actuated to operate a solenoid valve 19 which connects a low set pressure valve 20 to the chamber 14 causing the pressure therein to be reduced allowing the piston 12 to be forced back by the flow of material of the tube 13.
GB1825272A 1971-05-06 1972-04-19 Swaging machine for the internal profiling of tubular workpieces Expired GB1349238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT394071A AT305734B (en) 1971-05-06 1971-05-06 Forging machine for internal profiling of tubular workpieces

Publications (1)

Publication Number Publication Date
GB1349238A true GB1349238A (en) 1974-04-03

Family

ID=3557484

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1825272A Expired GB1349238A (en) 1971-05-06 1972-04-19 Swaging machine for the internal profiling of tubular workpieces

Country Status (7)

Country Link
US (1) US3753365A (en)
JP (1) JPS5146510B1 (en)
AT (1) AT305734B (en)
DD (1) DD96866A5 (en)
DE (1) DE2218667C3 (en)
FR (1) FR2135189B1 (en)
GB (1) GB1349238A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT322329B (en) * 1973-12-04 1975-05-12 Gfm Fertigungstechnik FORGING MACHINES FOR PRODUCING IN PARTICULAR SCRAP BARRELS
AT346156B (en) * 1977-04-01 1978-10-25 Gfm Fertigungstechnik FORGING MACHINE FOR FORGING LARGE PIPES OVER A LONG THORN
US4321813A (en) * 1980-01-07 1982-03-30 Caterpillar Tractor Co. Pusher block for rotary forging machines and method of using same
WO1982003579A1 (en) * 1980-01-07 1982-10-28 Bruce N Hershock Pusher block for rotary forging machines and method of using same
US4359810A (en) * 1980-01-16 1982-11-23 The Marlin Firearms Company Method of forming cartridge chambers in firearm barrels
US4722216A (en) * 1982-02-08 1988-02-02 Grotnes Metalforming Systems, Inc. Radial forging method
DE3300175C2 (en) * 1983-01-05 1986-06-05 Wolfgang Th. Dipl.-Ing. 7238 Oberndorf Wegwerth Process for the manufacture of gun barrels
DE3515759C2 (en) * 1985-05-02 1994-10-06 Mueller Heinrich Masch Precision forge for internal profiling of tubular workpieces
DE3517719C2 (en) * 1985-05-17 1994-09-15 Mueller Heinrich Masch Workpiece holder for a feed device in metal forming machines
CH670970A5 (en) * 1986-09-18 1989-07-31 Grob Ernst Fa
JPS63149034A (en) * 1986-12-15 1988-06-21 Hitachi Ltd Manufacture of helical internal gear
DE10118032B4 (en) * 2001-04-11 2006-08-10 Gkn Driveline International Gmbh Method for drawing a pipe by means of a drawing ring
US6807837B1 (en) * 2003-03-26 2004-10-26 Randall L. Alexoff Method and apparatus for producing variable wall thickness tubes and hollow shafts
AT501152B8 (en) * 2003-12-30 2007-02-15 Gfm Beteiligungs & Man Gmbh METHOD AND DEVICE FOR PRODUCING A CYLINDRICAL HOLLOW BODY FROM A BOARD
DE102009052482A1 (en) * 2009-02-11 2010-08-19 Sms Meer Gmbh Method and device for producing tubular workpieces from a pre-punched hollow block
DE102010014583A1 (en) 2010-04-09 2011-10-13 Felss Gmbh Establishment of a rotary swaging machine with a workpiece holder and a mandrel bar holder
AT514894B1 (en) * 2013-09-25 2016-04-15 Gfm Gmbh Apparatus for forging a hollow body from a pre-punched hollow block
CN104475479B (en) * 2014-09-25 2016-08-24 北京科技大学 A kind of technique utilizing swaging techniques to prepare small-diameter thick-walled metal tube
TR201603523A2 (en) * 2016-03-17 2017-10-23 Repkon Makina Ve Kalip Sanayi Ve Ticaret Anonim Sirketi Namlu üretmek i̇çi̇n yöntem ve bu yöntemi̇ gerçekleşti̇rmek i̇çi̇n aparat

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1617890A (en) * 1922-03-10 1927-02-15 Etna Machine Company Swaging machine
US3120137A (en) * 1961-01-03 1964-02-04 Ingersoll Rand Canada Apparatus for forming varying shaped bores in hollow members
AT221909B (en) * 1961-06-06 1962-06-25 Ges Fertigungstechnik & Maschb Forging machine for internal profiling of tubular workpieces, especially gun barrels

Also Published As

Publication number Publication date
DE2218667C3 (en) 1975-08-07
FR2135189A1 (en) 1972-12-15
JPS5146510B1 (en) 1976-12-09
DE2218667B2 (en) 1974-12-19
AT305734B (en) 1973-03-12
FR2135189B1 (en) 1974-07-26
US3753365A (en) 1973-08-21
DD96866A5 (en) 1973-04-12
DE2218667A1 (en) 1973-04-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee