GB785654A - Improvements in or relating to the manufacture of metal tubes or metal sheaths of electric cables - Google Patents

Improvements in or relating to the manufacture of metal tubes or metal sheaths of electric cables

Info

Publication number
GB785654A
GB785654A GB1657755A GB1657755A GB785654A GB 785654 A GB785654 A GB 785654A GB 1657755 A GB1657755 A GB 1657755A GB 1657755 A GB1657755 A GB 1657755A GB 785654 A GB785654 A GB 785654A
Authority
GB
United Kingdom
Prior art keywords
tube
tool
axis
head
supports
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
GB1657755A
Inventor
James Ronald Penrose
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.)
Pirelli General Cable Works Ltd
Pirelli General Cable Works
Original Assignee
Pirelli General Cable Works Ltd
Pirelli General Cable Works
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 Pirelli General Cable Works Ltd, Pirelli General Cable Works filed Critical Pirelli General Cable Works Ltd
Priority to GB1657755A priority Critical patent/GB785654A/en
Publication of GB785654A publication Critical patent/GB785654A/en
Expired 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
    • 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
    • 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
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/12—Die holders; Rotating dies

Landscapes

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

Abstract

785,654. Spinning tubes. PIRELLI-GENERAL CABLE WORKS, Ltd. April 20, 1956 [June 9, 1955], No. 16577/55. Class 83 (4). A method of reducing the diameter of a metal tube consists in subjecting the external surface of the tube to the action of a tool having an operative surface which is concave toward the tube and is formed by a generatrix parallel or slightly inclined to the axis of the tool, the nearest point on the said operative surface to the axis of the tube being at a.less distance from the tube axis than the external radius of the tube as unreduced, moving the tube in the direction of its axis and simultaneously producing relative rotation between the tool and the tube, whereby deformation of the tube along a helical path is effected. A tube reducing machine comprises a head 1 rotatably mounted on a fixed frame 2 and driven by a gear 5. A bush 6 in the head supports the unreduced portion of the tube 7 and a bush 8 supports the reduced portion 7a, these bushes 6 and 8 being fitted respectively within rings 9 and 10 by means of roller bearings 11 and 12. A further ring 13 located between and secured to the rings 9 and 10 encloses a diametrically adjustable tool holder 14 which carries the tubereducing tool 15. A micrometer head 21 assists in setting the desired eccentricity to the tool 15. The lead-in portion of the tool is flared and the exit edge slightly rounded. A plug 25 carried on a stem 26 supports the tube just before the points of application of the tool which may be rotatably mounted on the head 14 by means of a ball bearing 16 to impart a rolling action on the tube instead of a rubbing action. The machine may be used for reducing a cable sheath on to the cable core, a hollow plug being used in place of the plug 25. The tool may be inclined to the tube axis and reduction may be effected in stages by arranging two or more tools to operate on tandem. Alternatively, the tool may remain stationary and the tube rotated about an axis parallel, but eccentric to its own axis.
GB1657755A 1955-06-09 1955-06-09 Improvements in or relating to the manufacture of metal tubes or metal sheaths of electric cables Expired GB785654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1657755A GB785654A (en) 1955-06-09 1955-06-09 Improvements in or relating to the manufacture of metal tubes or metal sheaths of electric cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1657755A GB785654A (en) 1955-06-09 1955-06-09 Improvements in or relating to the manufacture of metal tubes or metal sheaths of electric cables

Publications (1)

Publication Number Publication Date
GB785654A true GB785654A (en) 1957-10-30

Family

ID=10079821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1657755A Expired GB785654A (en) 1955-06-09 1955-06-09 Improvements in or relating to the manufacture of metal tubes or metal sheaths of electric cables

Country Status (1)

Country Link
GB (1) GB785654A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217521A (en) * 1961-12-22 1965-11-16 Titanium Metals Corp Tube reducing apparatus and method
EP1635136A2 (en) * 2004-09-10 2006-03-15 MI.TE.A. S.p.A. Device for verifying the dimension of a cylindrical element
CN102248021A (en) * 2011-06-24 2011-11-23 浙江伦宝金属管业有限公司 Cold-drawing steel tube mould base
NO338572B1 (en) * 2013-08-28 2016-09-05 Nexans Apparatus and method for enclosing a cable with a sheath

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217521A (en) * 1961-12-22 1965-11-16 Titanium Metals Corp Tube reducing apparatus and method
EP1635136A2 (en) * 2004-09-10 2006-03-15 MI.TE.A. S.p.A. Device for verifying the dimension of a cylindrical element
EP1635136A3 (en) * 2004-09-10 2012-01-04 MI.TE.A. S.p.A. Device for verifying the dimension of a cylindrical element
CN102248021A (en) * 2011-06-24 2011-11-23 浙江伦宝金属管业有限公司 Cold-drawing steel tube mould base
NO338572B1 (en) * 2013-08-28 2016-09-05 Nexans Apparatus and method for enclosing a cable with a sheath

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