GB669163A - Improvements in method and apparatus for reshaping metal tubes - Google Patents
Improvements in method and apparatus for reshaping metal tubesInfo
- Publication number
- GB669163A GB669163A GB31226/49A GB3122649A GB669163A GB 669163 A GB669163 A GB 669163A GB 31226/49 A GB31226/49 A GB 31226/49A GB 3122649 A GB3122649 A GB 3122649A GB 669163 A GB669163 A GB 669163A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- filler
- plungers
- die
- cavity
- 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
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
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
669,163. Stamping. SEEBER, R. R. Dec. 6, 1949 [Dec. 8, 1948], No. 31226/49. Class 83 (iv). In a method of re-shaping a metal tube by applying pressure to the end of the tube and to a plastic filler therein, one portion of the tube being closely embraced by a corresponding portion of a die and the other portion of the tube being open to a shaping cavity in the die, the pressures are separately applied to the tube end and to the filler in such a manner that the end of the tube and the end of the filler move at different rates. The rates of movement of the tube and of the end of the filler may be such that the change of surface area of that portion of the tube within the die cavity corresponds with the rate of feed of the filler thereinto. One of the pressures may be applied both to the tube end and to a portion of the end of the filler at such a rate of movement of the tube end as to correspond with the increasing surface area of that portion of the tube within the cavity of the die. A metal tube 1 filled with a plastic filler 2 such as lead, Woods metal or a similar alloy is placed in a die formed with a spherical cavity 4 and pressure is applied axially to both ends of the tube 1 and of the filler 2 by plungers 7, 8 and 9, 10. The two members of a pair of plungers approach each other at the same speed but the speeds of the different pairs depend upon the increase in surface area of the expanding part of the tube 1 and the volume of filler 2 required as the tube 1 takes up the shape of cavity 4. Arrangements operating with opposed plungers and with a single set of plungers arranged at one end of the tube are described for producing T-shaped and sphericallyended articles. In the arrangement for producing T-shaped articles shown in Fig. 10 plungers 24, 25 are hydraulically operated by passing a fluid through pipes 37, 36 to exert a pressure on pistons 34, 31. Valves in pipes 36, 37 control the rate of fluid flow into cylinders 30, 33 and hence the rate and amount of forward movement of plungers 25, 24. Springs 32, 35 return the pistons 31, 34 to their normal inoperative position when the valves in pipes 36, 37 are closed and valves in the fluid return pipes 38, 39 are open. Specifications 440,601 and 457,370 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US669163XA | 1948-12-08 | 1948-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB669163A true GB669163A (en) | 1952-03-26 |
Family
ID=22072541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31226/49A Expired GB669163A (en) | 1948-12-08 | 1949-12-06 | Improvements in method and apparatus for reshaping metal tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB669163A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001087510A1 (en) * | 2000-05-13 | 2001-11-22 | Interforge Klee Gmbh | High-pressure shaping method and device |
-
1949
- 1949-12-06 GB GB31226/49A patent/GB669163A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001087510A1 (en) * | 2000-05-13 | 2001-11-22 | Interforge Klee Gmbh | High-pressure shaping method and device |
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