EP0432485A2 - Procédé et appareil de fabrication de tubes à alliages légers de grand diamètre à partir de tubes de petit diamètre - Google Patents
Procédé et appareil de fabrication de tubes à alliages légers de grand diamètre à partir de tubes de petit diamètre Download PDFInfo
- Publication number
- EP0432485A2 EP0432485A2 EP90121705A EP90121705A EP0432485A2 EP 0432485 A2 EP0432485 A2 EP 0432485A2 EP 90121705 A EP90121705 A EP 90121705A EP 90121705 A EP90121705 A EP 90121705A EP 0432485 A2 EP0432485 A2 EP 0432485A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubing
- mandrel
- pressing roller
- tube
- diameter
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
Definitions
- Said apparatus comprises a mandrel (1) which is rotated by the motor (6) and a pressing roller (2) whose rotating motion is idling and which begins to rotate when between it and the mandrel (1) there is placed the tube to be processed (12) and the mandrel (1) begins to rotate.
- the tube decreases in thickness and increases in diameter and length and there can be produced tubing having a diameter from 300mm to 1000mm starting from tubing having a diameter from 100mm to 400mm.
- the apparatus consists basically of a mandrel (1) and a pressing roller (2).
- the mandrel (1) is mounted on ball bearings and rotated by a pair of gears (4) integral with the pulley shaft (5) which is integral in turn with the motor (6) through a clutch.
- the pressing roller (2) is mounted on large ball bearings and its motion is idling. It begins to rotate when it rests on the tube (12) to be processed and said tube rests in turn on the rotating mandrel.
- the thrust of the pressing roller (2) against the tube (12) is exerted by rotating the pair of gears (7).
- the pressing roller (2) is mounted on a misaligned axle and hence the rotation results in approach to and in withdrawal from the roller of the tube to be processed.
- a lever system (10) with its fulcrum (11) on the supporting structure and driven by the cylinder (3) makes the pressing roller unit (2) more rigid and eliminates bending almost entirely.
- the process for production of tubing in accordance with the present invention is accomplished by means of the following operations.
- the cylinder (3) holds the lever (10) in an oblique position as shown in FIG. 4 in broken lines while in the mandrel (1) is introduced the tube (12) to be processed.
- the lever (10) is thrust by the cylinder (3) and moves to a vertical position engaging the terminal part of the shaft of the pressing roller (2).
- the mandrel (1) is made to begin rotating and the shaft (14) of the pressing roller (2) is also made to begin operating and the misaligned rotation thereof permits approach of the pressing roller to the internal wall of the mandrel.
- tubing with a diameter from 100mm to 400mm and thickness from 5mm to 40mm can be processed to produce tubing having a diameter from 300mm to 1000mm and thickness from 1mm to 20mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Heat Treatment Of Articles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT02238689A IT1236712B (it) | 1989-11-15 | 1989-11-15 | Procedimento e apparecchiatura per la produzione di tubi in lega leggera a diametro maggiorato a partire da tubi a diametro inferiore. |
IT2238689 | 1989-11-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0432485A2 true EP0432485A2 (fr) | 1991-06-19 |
EP0432485A3 EP0432485A3 (fr) | 1991-07-03 |
EP0432485B1 EP0432485B1 (fr) | 1994-06-22 |
Family
ID=11195577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90121705A Expired - Lifetime EP0432485B1 (fr) | 1989-11-15 | 1990-11-13 | Procédé et appareil de fabrication de tubes à alliages légers de grand diamètre à partir de tubes de petit diamètre |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0432485B1 (fr) |
AT (1) | ATE107550T1 (fr) |
DE (1) | DE69010163T2 (fr) |
DK (1) | DK0432485T3 (fr) |
ES (1) | ES2055851T3 (fr) |
IT (1) | IT1236712B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9010164B2 (en) | 2010-12-02 | 2015-04-21 | Victaulic Company | Methods for manufacture of pipe element having shoulder, groove and bead |
US9038428B2 (en) | 2011-09-02 | 2015-05-26 | Victaulic Company | Spin forming method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1570221A (fr) * | 1967-06-29 | 1969-06-06 | ||
FR2195491A1 (fr) * | 1972-08-09 | 1974-03-08 | Roulements Soc Nouvelle | |
GB2007134A (en) * | 1977-11-04 | 1979-05-16 | Honda Motor Co Ltd | Apparatus for roll-forming seamless annular products |
GB2025818A (en) * | 1978-07-19 | 1980-01-30 | Doncaster & Sons Ltd D | Method of Producing Rings from Aluminium-based Alloys |
DE3237295A1 (de) * | 1982-10-08 | 1984-04-12 | Stahlwerke Plate GmbH & Co KG, 5880 Lüdenscheid | Ringwalzwerk |
EP0286587A2 (fr) * | 1987-04-07 | 1988-10-12 | ROHRKALIBRIER- UND BOGENAUTOMATEN RoKaBo AG | Procédé de profilage d'objets annulaires et dispositif pour la mise en oeuvre dudit procédé |
-
1989
- 1989-11-15 IT IT02238689A patent/IT1236712B/it active IP Right Grant
-
1990
- 1990-11-13 DK DK90121705.9T patent/DK0432485T3/da active
- 1990-11-13 AT AT90121705T patent/ATE107550T1/de not_active IP Right Cessation
- 1990-11-13 ES ES90121705T patent/ES2055851T3/es not_active Expired - Lifetime
- 1990-11-13 DE DE69010163T patent/DE69010163T2/de not_active Expired - Fee Related
- 1990-11-13 EP EP90121705A patent/EP0432485B1/fr not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1570221A (fr) * | 1967-06-29 | 1969-06-06 | ||
FR2195491A1 (fr) * | 1972-08-09 | 1974-03-08 | Roulements Soc Nouvelle | |
GB2007134A (en) * | 1977-11-04 | 1979-05-16 | Honda Motor Co Ltd | Apparatus for roll-forming seamless annular products |
GB2025818A (en) * | 1978-07-19 | 1980-01-30 | Doncaster & Sons Ltd D | Method of Producing Rings from Aluminium-based Alloys |
DE3237295A1 (de) * | 1982-10-08 | 1984-04-12 | Stahlwerke Plate GmbH & Co KG, 5880 Lüdenscheid | Ringwalzwerk |
EP0286587A2 (fr) * | 1987-04-07 | 1988-10-12 | ROHRKALIBRIER- UND BOGENAUTOMATEN RoKaBo AG | Procédé de profilage d'objets annulaires et dispositif pour la mise en oeuvre dudit procédé |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9010164B2 (en) | 2010-12-02 | 2015-04-21 | Victaulic Company | Methods for manufacture of pipe element having shoulder, groove and bead |
US9333543B2 (en) | 2010-12-02 | 2016-05-10 | Victaulic Company | Pipe element having shoulder, groove and bead |
US9038428B2 (en) | 2011-09-02 | 2015-05-26 | Victaulic Company | Spin forming method |
Also Published As
Publication number | Publication date |
---|---|
DE69010163D1 (de) | 1994-07-28 |
EP0432485B1 (fr) | 1994-06-22 |
DE69010163T2 (de) | 1994-10-06 |
IT1236712B (it) | 1993-03-26 |
ES2055851T3 (es) | 1994-09-01 |
IT8922386A1 (it) | 1991-05-15 |
IT8922386A0 (it) | 1989-11-15 |
DK0432485T3 (da) | 1994-07-25 |
ATE107550T1 (de) | 1994-07-15 |
EP0432485A3 (fr) | 1991-07-03 |
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