GB867878A - Improvements in the production of fins or ribs on elongate metal articles - Google Patents

Improvements in the production of fins or ribs on elongate metal articles

Info

Publication number
GB867878A
GB867878A GB74358A GB74358A GB867878A GB 867878 A GB867878 A GB 867878A GB 74358 A GB74358 A GB 74358A GB 74358 A GB74358 A GB 74358A GB 867878 A GB867878 A GB 867878A
Authority
GB
United Kingdom
Prior art keywords
forming
die
ribs
dies
fins
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
GB74358A
Inventor
Fred Howarth
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB74358A priority Critical patent/GB867878A/en
Publication of GB867878A publication Critical patent/GB867878A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/187—Rolling helical or rectilinear grooves
    • 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
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/202—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with guides parallel to the tube axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Metal Extraction Processes (AREA)

Abstract

867,878. Making ribbed tubes; rolling; drawing. IMPERIAL CHEMICAL INDUSTRIES Ltd. March 4, 1959 [Jan. 8, 1958], No. 743/58. Classes 83 (2) and 83 (4). In a method of forming longitudinal fins or ribs on an elongate metal article, the article is drawn through a series of spaced-forming dies, each comprising rotatable forming tools to form the fins progressively. Fins or ribs are formed on a metal tube by a series of dies 1, 2 . . . 10, each having 24 forming discs 13 mounted to rotate freely in a disc holder comprising three parts, e.g. the inner annulus 15 having tongues 18, Fig. 2, not shown, and outer annuli 16, 17 which parts are located by screws 21. The series of dies are integrally assembled by the screws 21, the sets of forming discs increasing progressively in diameter and the forming edges being successively modified from die to die. Openpitch helical ribs may be formed by slight rotation of the work during its advance discs in successive dies being slightly circumferentially offset from those in the preceding die. In a modification each die comprises grooved rolls 20 for forming ribs on a tube. The rolls are staggered from die to die to eliminate flash, while the grooves 22 remain in the same relative positions in space.
GB74358A 1958-01-08 1958-01-08 Improvements in the production of fins or ribs on elongate metal articles Expired GB867878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB74358A GB867878A (en) 1958-01-08 1958-01-08 Improvements in the production of fins or ribs on elongate metal articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB74358A GB867878A (en) 1958-01-08 1958-01-08 Improvements in the production of fins or ribs on elongate metal articles

Publications (1)

Publication Number Publication Date
GB867878A true GB867878A (en) 1961-05-10

Family

ID=9709750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB74358A Expired GB867878A (en) 1958-01-08 1958-01-08 Improvements in the production of fins or ribs on elongate metal articles

Country Status (1)

Country Link
GB (1) GB867878A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528148A (en) * 1981-06-26 1985-07-09 Societa' Cavi Pirelli S.P.A. Method and apparatus for forming grooves in an optical fiber support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528148A (en) * 1981-06-26 1985-07-09 Societa' Cavi Pirelli S.P.A. Method and apparatus for forming grooves in an optical fiber support

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