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GB1189135A - Method and apparatus for producing Tapered Metal Tubing - Google Patents

Method and apparatus for producing Tapered Metal Tubing

Info

Publication number
GB1189135A
GB1189135A GB2322167A GB2322167A GB1189135A GB 1189135 A GB1189135 A GB 1189135A GB 2322167 A GB2322167 A GB 2322167A GB 2322167 A GB2322167 A GB 2322167A GB 1189135 A GB1189135 A GB 1189135A
Authority
GB
United Kingdom
Prior art keywords
die
tube
mandrel
tapered
over
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
GB2322167A
Inventor
John Wesley Hinshaw
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.)
Battelle Development Corp
Original Assignee
Battelle Development Corp
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 Battelle Development Corp filed Critical Battelle Development Corp
Priority to GB2322167A priority Critical patent/GB1189135A/en
Publication of GB1189135A publication Critical patent/GB1189135A/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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/18—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes from stock of limited length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing

Landscapes

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

Abstract

1,189,135. Drawing. BATTELLE DEVELOPMENT CORP. 18 May, 1967, No. 23221/67. Heading B3P. A metal tube is tapered by forcing a tube and tapered mandrel through a deformable drawing die or forcing the die over the tube and mandrel so as to cause the die to deform and the tube to be drawn on to the mandrel. In one embodiment, Fig. 3, one of two plate members 24, 26 is moved relative to the stationary other to draw the tubing 20 through a brass die 34 containing 80-90% Cu against-a tapered mandrel 10 without any reduction in the wall thickness. The die 34 and mandrel 10 may be rotated relative to each other. The die 34 is held between a pair of semi-circular segments 36, 38 resiliently biased together by a spring loop 40, and may be notched at its trailing end (Fig. 7, not shown) to reduce the amount of die material when a tube having a large amount of taper is to be produced. A tube also having a tapering wall thickness may be formed by first drawing a tube over a slightly tapered mandrel through a conventional die of fixed internal dimensions to apply a taper to the wall thickness, after which the tube is tapered without any further change in the wall thickness using the apparatus of Fig. 3. At least a portion of the mandrel 10 may be non- circular, e.g. square, hexagonal or the mandrel 10 may have stepped, tapered portions. Two tubes may be laminated together. In a further embodiment, Fig. 11, a tube tapered inwardly and then outwardly is formed by positioning a die 80 between a back-up plate 72 and a split die 84. The latter is moved towards the former to cause the front end of the die 80 to be cammed inwardly so that the tube 20 is drawn over the mandrel portion 68. When the tube 20 has been drawn completely over the mandrel portion 68, the die halves 86, 88 of the split die 84 are separated and the drawing of the tube 20 over the mandrel portion 70 is carried out using the die 80 only. The mandrel section 68 may be omitted and the sequence of the two tapering operations repeated along a length of tubing. The tubing may be of copper, brass, aluminium, nickel or stainless steel.
GB2322167A 1967-05-18 1967-05-18 Method and apparatus for producing Tapered Metal Tubing Expired GB1189135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2322167A GB1189135A (en) 1967-05-18 1967-05-18 Method and apparatus for producing Tapered Metal Tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2322167A GB1189135A (en) 1967-05-18 1967-05-18 Method and apparatus for producing Tapered Metal Tubing

Publications (1)

Publication Number Publication Date
GB1189135A true GB1189135A (en) 1970-04-22

Family

ID=10192125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2322167A Expired GB1189135A (en) 1967-05-18 1967-05-18 Method and apparatus for producing Tapered Metal Tubing

Country Status (1)

Country Link
GB (1) GB1189135A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243789A3 (en) * 1986-05-02 1989-07-12 Km-Kabelmetal Aktiengesellschaft Method for manufacturing moulds for continuous-casting machines
GB2245677A (en) * 1990-07-02 1992-01-08 British Gas Plc Splittable die
RU2126731C1 (en) * 1998-04-27 1999-02-27 Пермский государственный технический университет Article drawing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243789A3 (en) * 1986-05-02 1989-07-12 Km-Kabelmetal Aktiengesellschaft Method for manufacturing moulds for continuous-casting machines
GB2245677A (en) * 1990-07-02 1992-01-08 British Gas Plc Splittable die
GB2245677B (en) * 1990-07-02 1993-09-01 British Gas Plc Splittable die
US5263843A (en) * 1990-07-02 1993-11-23 British Gas Plc Splittable die used in pipe lining
RU2126731C1 (en) * 1998-04-27 1999-02-27 Пермский государственный технический университет Article drawing method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees