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 wall

Info

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
Application number
IE653/69A
Other versions
IE33454L (en
Original Assignee
Leer Ltd Van
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 Leer Ltd Van filed Critical Leer Ltd Van
Publication of IE33454L publication Critical patent/IE33454L/en
Publication of IE33454B1 publication Critical patent/IE33454B1/en

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)
  • Making Paper Articles (AREA)
  • Forging (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]
IE653/69A 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 IE33454B1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
US3581546A (en) 1971-06-01
DE1924716C3 (en) 1979-08-09
DE1924716B2 (en) 1978-11-30
NL7305621A (en) 1973-07-25
NO130754C (en) 1975-02-05
AT298954B (en) 1972-05-25
DE1924716A1 (en) 1969-11-27
BR6908825D0 (en) 1973-01-02
GB1204736A (en) 1970-09-09
NO130754B (en) 1974-10-28
ES368571A1 (en) 1971-05-01
ES367178A1 (en) 1971-04-01
IE33454L (en) 1969-11-14
CH490904A (en) 1970-05-31
SE391464B (en) 1977-02-21
FR2008472A1 (en) 1970-01-23
BE733079A (en) 1969-11-14

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