GB1075548A - Process for the manufacture of conical and cylindroconical tubes and apparatus for carrying the process into effect - Google Patents

Process for the manufacture of conical and cylindroconical tubes and apparatus for carrying the process into effect

Info

Publication number
GB1075548A
GB1075548A GB45530/64A GB4553064A GB1075548A GB 1075548 A GB1075548 A GB 1075548A GB 45530/64 A GB45530/64 A GB 45530/64A GB 4553064 A GB4553064 A GB 4553064A GB 1075548 A GB1075548 A GB 1075548A
Authority
GB
United Kingdom
Prior art keywords
circle
strip
trapezium
conical
point
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
GB45530/64A
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.)
ALUMINIUM FRANCAIS
Original Assignee
ALUMINIUM FRANCAIS
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
Priority claimed from FR953120A external-priority patent/FR1382331A/en
Priority claimed from FR970082A external-priority patent/FR85959E/en
Application filed by ALUMINIUM FRANCAIS filed Critical ALUMINIUM FRANCAIS
Publication of GB1075548A publication Critical patent/GB1075548A/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
    • 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • 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
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
    • B21C37/185—Making tubes with varying diameter in longitudinal direction conical tubes starting from sheet material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulding By Coating Moulds (AREA)
  • Materials For Medical Uses (AREA)

Abstract

1,075,548. Making tubes. L'ALUMINIUM FRANCAIS. Nov. 19, 1964 [Nov. 8, 1963; April 8, 1964], No. 45530/64. Heading B3A. [Also in Division F2] In a process for the manufacture of conical and cylindro-conical tubes the developed surface ABDC of a frustum of a cone having an apex angle a which it is desired to reproduce is traced on a rectangular sheet of the desired material, e.g. metal or a plastics material, and the rectilinear sides AC and BD of the curvilinear trapezium are prolonged as far as their point of intersection S. A circle T 1 described about the triangle constituted by the point S and one of the bases of the trapezium ABDC and a circle T 2 of centre S extending through the two apices of the other base of the trapezium are plotted, and a point # is taken on the circle T 1 which point is joined to the two trapezium apices through which the circle T 1 passes. The two straight lines thus obtained intersect the circle T 2 at the points P, Q respectively, and a strip is cut along the curvilinear trapezium limited by the straight lines #P and #Q and the circles T 1 , T 2 . The strip is wound into the form of a pseudo-helix of continuously varying diameter, the strip forming with the axis of the helix an angle equal to radians, and the adjacent edges are joined together by means such as welding, brazing or clamping. The process is repeated until the whole of the rectangular sheet is used up. The strip 2 is fed between direction imparting rolls 24 having parallel axes and from a drum 3 mounted in a movable carriage so that the drum is displaced through an arc of a circle 30 and on a path inclined relatively to the axis 10. The device (1), Figs. 9 and 10 (not shown), for forming successive turns of the strip comprises a fixed cylinder (11) having a slot (12) for entry of the strip and provided with guiding means constituted by rods (13) extending through the cylinder into a housing (15) and guided by cams (16). The formed tubes (60), Fig. 11 (not shown), comprising two conical frusta are guided on a conveyer (40) by carriages (52)-(54) and cut along the lines (61), (62).
GB45530/64A 1963-11-08 1964-11-09 Process for the manufacture of conical and cylindroconical tubes and apparatus for carrying the process into effect Expired GB1075548A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR953120A FR1382331A (en) 1963-11-08 1963-11-08 Process for the manufacture of conical tubes and tubes manufactured by this process
FR970082A FR85959E (en) 1964-04-08 1964-04-08 Process for the manufacture of conical tubes and tubes manufactured by this process

Publications (1)

Publication Number Publication Date
GB1075548A true GB1075548A (en) 1967-07-12

Family

ID=26204239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45530/64A Expired GB1075548A (en) 1963-11-08 1964-11-09 Process for the manufacture of conical and cylindroconical tubes and apparatus for carrying the process into effect

Country Status (7)

Country Link
BE (1) BE655373A (en)
CH (1) CH447991A (en)
DE (2) DE1452196A1 (en)
ES (1) ES305719A1 (en)
GB (1) GB1075548A (en)
LU (1) LU47290A1 (en)
NL (1) NL6412978A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10060149B2 (en) 2010-01-25 2018-08-28 Keystone Tower Systems, Inc. Tapered spiral welded structure
US10189064B2 (en) 2010-01-25 2019-01-29 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US10195653B2 (en) 2011-09-20 2019-02-05 Keystone Tower Systems, Inc. Tapered structure construction

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815477A1 (en) * 1978-04-10 1979-10-18 Vulkan Werk Gmbh TUBE FROM SCREW-SHAPED TAPE MATERIAL
EP0201729A3 (en) * 1985-04-12 1987-04-29 Horst Hano Device for the production of wrapped tube as well as a wrapped tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH396A (en) * 1889-01-30 1889-09-11 Wilhelm Lorenz Tool disk with a central cavity and with tools arranged in a circle, which can be moved back and forth towards the cavity
FR1294632A (en) * 1961-07-11 1962-05-26 Machine for the manufacture of tubes of different diameters from a spiral wound strip

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10060149B2 (en) 2010-01-25 2018-08-28 Keystone Tower Systems, Inc. Tapered spiral welded structure
US10189064B2 (en) 2010-01-25 2019-01-29 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US10895088B2 (en) 2010-01-25 2021-01-19 Keystone Tower Systems, Inc. Tapered spiral welded structure
US11364527B2 (en) 2010-01-25 2022-06-21 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US11834856B2 (en) 2010-01-25 2023-12-05 Keystone Tower Systems, Inc. Tapered spiral welded structure
US10195653B2 (en) 2011-09-20 2019-02-05 Keystone Tower Systems, Inc. Tapered structure construction
US10974298B2 (en) 2011-09-20 2021-04-13 Keystone Tower Systems, Inc. Tapered structure construction
US11571727B2 (en) 2011-09-20 2023-02-07 Keystone Tower Systems, Inc. Tapered structure construction

Also Published As

Publication number Publication date
ES305719A1 (en) 1965-05-01
LU47290A1 (en) 1965-05-05
DE1777330B1 (en) 1972-03-16
BE655373A (en) 1965-05-06
CH447991A (en) 1967-12-15
DE1452196A1 (en) 1969-03-27
NL6412978A (en) 1965-05-10

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