GB694472A - Improved machine for swaging metal tubes - Google Patents

Improved machine for swaging metal tubes

Info

Publication number
GB694472A
GB694472A GB17710/51A GB1771051A GB694472A GB 694472 A GB694472 A GB 694472A GB 17710/51 A GB17710/51 A GB 17710/51A GB 1771051 A GB1771051 A GB 1771051A GB 694472 A GB694472 A GB 694472A
Authority
GB
United Kingdom
Prior art keywords
tube
dies
zones
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
GB17710/51A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB694472A publication Critical patent/GB694472A/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
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B21J7/16—Forging machines working with several hammers in rotary arrangements

Abstract

694,472. Making tubes. GENERAL MOTORS CORPORATION. July 26, 1951 [July 28, 1950], No. 17710/51. Classes 83 (ii) and 83 (iv). Swaging.- A tube swaging machine comprises a mandrel and oppositely disposed dies which fit around the tube and means for recurrently striking the dies to produce a swaging or hammering action on the tube as it is drawn over the mandrel, the mandrel having its working surface relieved over alternate short zones along the length thereof. The machine has a hollow carrier 20 j journalled in a housing 21 and rotated by means of pulleys 22 and 23 driven by a motor 25 and belts 24. The housing has a tubular hub 27 which supports a circular row of rolls 26. The portion of the carrier 20 extending coaxially in the circular space defined by the rolls 26 has a diametral recess in which a pair of dies 31, 32 and die hammers 35 and 37 are slidably supported. The outer end of each hammer has a roller 36, 38 which is successively engaged by the rolls 26 as they are carried round by the rotating hub 27. The dies pound the external surface of the tube 33 as it is fed through the machine by two sets of rollers 50, 51. The rollers 50 are idle and the rollers 51 driven through bevel gears from the motor 25. A mandrel 40 is held in the pass between the dies by a rod 41. The input end of each die has a tapered lead 43 and the mandrel has a tapered outer end 42. The working surface of the mandrel has alternate full diameter zones A, C, E and G, and intermediate smaller diameter zones B, D and F. The zones A, C, E and G are 0.011 inches smaller in diameter than the inside of the tube and the zones B, D and F are 0.004 inches smaller in diameter than the zones A, C, E and G. In operation, the tube is inserted into the pass between the dies 31 and 32 and as the carrier 20 rotates the hammers 35 and 37 repeatedly pound the dies 31 and 32 against the tube wall. As the tube passes over the larger zones metal is displaced by the dies towards the relieved zones, resulting in a bur. nishing which provides a mirror-like internal surface to the tube.
GB17710/51A 1950-07-28 1951-07-26 Improved machine for swaging metal tubes Expired GB694472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US694472XA 1950-07-28 1950-07-28

Publications (1)

Publication Number Publication Date
GB694472A true GB694472A (en) 1953-07-22

Family

ID=22089031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17710/51A Expired GB694472A (en) 1950-07-28 1951-07-26 Improved machine for swaging metal tubes

Country Status (1)

Country Link
GB (1) GB694472A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047582B (en) * 1955-11-18 1958-12-24 Benteler Werke Ag Method and device for the production of pipes of the same wall thickness
DE1098333B (en) * 1956-01-12 1961-01-26 Appel Process Ltd Hammering machine for straightening and relaxing elongated workpieces
GB2424848B (en) * 2003-12-22 2007-12-12 Honda Motor Co Ltd Method of forming member, valve guide and method of forming the valve guide, and method of forming tubular member

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047582B (en) * 1955-11-18 1958-12-24 Benteler Werke Ag Method and device for the production of pipes of the same wall thickness
DE1098333B (en) * 1956-01-12 1961-01-26 Appel Process Ltd Hammering machine for straightening and relaxing elongated workpieces
GB2424848B (en) * 2003-12-22 2007-12-12 Honda Motor Co Ltd Method of forming member, valve guide and method of forming the valve guide, and method of forming tubular member

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