IE33454B1 - Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container or a portion of such a side wall - Google Patents
Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container or a portion of such a side wallInfo
- Publication number
- IE33454B1 IE33454B1 IE653/69A IE65369A IE33454B1 IE 33454 B1 IE33454 B1 IE 33454B1 IE 653/69 A IE653/69 A IE 653/69A IE 65369 A IE65369 A IE 65369A IE 33454 B1 IE33454 B1 IE 33454B1
- Authority
- IE
- Ireland
- Prior art keywords
- dies
- container
- side wall
- sheet metal
- head
- Prior art date
Links
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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/06—Removing local distortions
- B21D1/08—Removing local distortions of hollow bodies made from sheet metal
-
- 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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F5/00—Means for displaying samples
- G09F5/02—Portable sample cases
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Forging (AREA)
- Making Paper Articles (AREA)
Abstract
1,204,736. Restoring shape of articles; altering physical properties. VAN LEER (U.K.) Ltd. 6 May, 1969 [14 May, 1968], No. 22931/68. Headings B3Q and B3V. A method of reducing asymmetrical stresses in a cylindrical sheet metal container and restoring its shape by removing any dents comprises expanding the container by radially expanding and retracting inner dies past the yield point of the metal and compressing or shrinking the container by radially movable outer dies while supporting the container interiorly by said inner dies until the yield point is exceeded and the diameter of the cylinder is less than its original diameter and then collapsing the dies to allow the container to return to its original diameter. Apparatus for carrying out the method comprises a base 1, a head 2 and a casing 3 the base and head being connected by tension rods 4. An hydraulic cylinder 7 carried by tension rods 6 operates a conical member 9 which actuates spring-loaded segmental inner dies 10. Hydraulic cylinders 12 mounted in the head 2 reciprocate a conical member 15 which actuates segmental outer dies 17 which extend through slots in the casing 3. In order to prevent thin sheet metal from buckling the axial edges of the dies are serrated to provide zig-zag gaps between the dies.
[GB1204736A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB22931/68A GB1204736A (en) | 1968-05-14 | 1968-05-14 | Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container of such a side wall |
Publications (2)
Publication Number | Publication Date |
---|---|
IE33454L IE33454L (en) | 1969-11-14 |
IE33454B1 true IE33454B1 (en) | 1974-07-10 |
Family
ID=10187376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE653/69A IE33454B1 (en) | 1968-05-14 | 1969-05-08 | Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container or a portion of such a side wall |
Country Status (13)
Country | Link |
---|---|
US (1) | US3581546A (en) |
AT (1) | AT298954B (en) |
BE (1) | BE733079A (en) |
BR (1) | BR6908825D0 (en) |
CH (1) | CH490904A (en) |
DE (1) | DE1924716C3 (en) |
ES (2) | ES367178A1 (en) |
FR (1) | FR2008472A1 (en) |
GB (1) | GB1204736A (en) |
IE (1) | IE33454B1 (en) |
NL (1) | NL7305621A (en) |
NO (1) | NO130754C (en) |
SE (1) | SE391464B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6045013B2 (en) * | 1978-08-07 | 1985-10-07 | 株式会社日立製作所 | How to straighten the tube end into a perfect circle |
BR8804178A (en) * | 1988-08-09 | 1990-01-02 | Antonio Henrique Kramer | PROCESS AND DEVICE FOR THE MANUFACTURE OF CAN BODIES BY STRETCHING, WITH EXPANSION OF THE DIAMETER AND REDUCING THE PLATE THICKNESS, FROM A CYLINDRICAL TIN BODY, SMALLER DIAMETER, MADE IN HIGHER THICKNESS PLATE |
US5595086A (en) * | 1994-08-02 | 1997-01-21 | Aluminum Company Of America | Apparatus for calibrating hollow nonsymmetrical multiplane extrusions and associated method |
US5826457A (en) * | 1997-07-11 | 1998-10-27 | Eagles; Allen S. | Wheel for mandrel of pipe straightening presses |
US6338189B1 (en) | 1999-10-07 | 2002-01-15 | Allison Engine Company, Inc. | Method and apparatus for expansion forming a workpiece using an external deformable supporting fixture |
US7475583B2 (en) * | 2006-02-01 | 2009-01-13 | State Pipe & Supply, Inc. | Method for repairing metal pipe |
CN114011964B (en) * | 2021-10-08 | 2024-06-18 | 江苏新天宝机械有限公司 | Automatic core-expanding flanging die |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2461839A (en) * | 1949-02-15 | Device for eestoking to shape the | ||
US373743A (en) * | 1887-11-22 | William kent | ||
US2931416A (en) * | 1958-05-20 | 1960-04-05 | Krise Otis | Milk case straightener |
-
1968
- 1968-05-14 GB GB22931/68A patent/GB1204736A/en not_active Expired
-
1969
- 1969-05-06 SE SE6906402A patent/SE391464B/en unknown
- 1969-05-07 US US822614A patent/US3581546A/en not_active Expired - Lifetime
- 1969-05-08 IE IE653/69A patent/IE33454B1/en unknown
- 1969-05-09 NO NO1918/69A patent/NO130754C/no unknown
- 1969-05-12 FR FR6915242A patent/FR2008472A1/fr not_active Withdrawn
- 1969-05-13 ES ES367178A patent/ES367178A1/en not_active Expired
- 1969-05-14 BR BR208825/69A patent/BR6908825D0/en unknown
- 1969-05-14 BE BE733079D patent/BE733079A/xx unknown
- 1969-05-14 DE DE1924716A patent/DE1924716C3/en not_active Expired
- 1969-05-14 AT AT464669A patent/AT298954B/en not_active IP Right Cessation
- 1969-05-14 CH CH737169A patent/CH490904A/en not_active IP Right Cessation
- 1969-06-19 ES ES368571A patent/ES368571A1/en not_active Expired
-
1973
- 1973-04-19 NL NL7305621A patent/NL7305621A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
ES368571A1 (en) | 1971-05-01 |
US3581546A (en) | 1971-06-01 |
FR2008472A1 (en) | 1970-01-23 |
ES367178A1 (en) | 1971-04-01 |
CH490904A (en) | 1970-05-31 |
SE391464B (en) | 1977-02-21 |
NO130754B (en) | 1974-10-28 |
GB1204736A (en) | 1970-09-09 |
BE733079A (en) | 1969-11-14 |
DE1924716C3 (en) | 1979-08-09 |
NO130754C (en) | 1975-02-05 |
AT298954B (en) | 1972-05-25 |
DE1924716A1 (en) | 1969-11-27 |
IE33454L (en) | 1969-11-14 |
NL7305621A (en) | 1973-07-25 |
DE1924716B2 (en) | 1978-11-30 |
BR6908825D0 (en) | 1973-01-02 |
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