GB801470A - Method of bending metal tubes - Google Patents
Method of bending metal tubesInfo
- Publication number
- GB801470A GB801470A GB11371/56A GB1137156A GB801470A GB 801470 A GB801470 A GB 801470A GB 11371/56 A GB11371/56 A GB 11371/56A GB 1137156 A GB1137156 A GB 1137156A GB 801470 A GB801470 A GB 801470A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- bending
- bend
- bent
- thickened
- 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
- B21C37/283—Making U-pieces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
801,470. Bending tubes. GRESSE, A., April 13, 1956 [April 19, 1955], No. 11371/56 Classes 83 (2) and 83 (4). A method of bending a tube comprises, first, bending the tube in a direction opposite that of the final bend, then bending the thus bent tube back in a direction opposite the first bend and then applying pressure to the inside of the thus partly-formed bend to move the tube between two spaced members to cause the limbs of the tube to move towards one another to form the final bend. A tube 1, preferably heated over the zone 5 to form the inside of the first bend, is bent over a former 2 so that the inside wall 3 becomes thickened. The thus bent tube is then bent back in the opposite direction, over a bending sheave 6 to form an angle of about 110 to 120 degrees. The inner wall 7 is thus thickened. An internal tube support 8 may be used. The bending sheave 6 has a semi-oval groove 6<SP>1</SP> to allow the thickened part 7 of the tube to move into the base thereof. After applying rapid heat to the inner region o, x, y, the legs of the bend are closed parallel to one another by movement of pivoted guide blocks 14, 15 together, and then by a suitably shaped member 18 which pushes the tube between the pivoted guide blocks 14, 15 and rollers 11, 12. Cooling liquid is supplied to the outer part of the elbow during this latter operation. The bent tube may then be formed in a die.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR801470X | 1955-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB801470A true GB801470A (en) | 1958-09-17 |
Family
ID=9243754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11371/56A Expired GB801470A (en) | 1955-04-19 | 1956-04-13 | Method of bending metal tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB801470A (en) |
-
1956
- 1956-04-13 GB GB11371/56A patent/GB801470A/en not_active Expired
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