GB982808A - Shaping method and apparatus - Google Patents

Shaping method and apparatus

Info

Publication number
GB982808A
GB982808A GB791163A GB791163A GB982808A GB 982808 A GB982808 A GB 982808A GB 791163 A GB791163 A GB 791163A GB 791163 A GB791163 A GB 791163A GB 982808 A GB982808 A GB 982808A
Authority
GB
United Kingdom
Prior art keywords
blank
liquid
cylinder
matrices
axial
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
Application number
GB791163A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metallurgigue de Gerzat
Original Assignee
Metallurgigue de Gerzat
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 Metallurgigue de Gerzat filed Critical Metallurgigue de Gerzat
Publication of GB982808A publication Critical patent/GB982808A/en
Expired legal-status Critical Current

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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/047—Mould construction
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles

Abstract

982,808. Stamping. SOC. METALLURGIQUE DE GERZAT. Feb. 27, 1963 [Feb. 28, 1962], No. 7911/63. Heading B3Q. [Also in Division B5] A method of shaping integral convex hollow bodies comprises preparing a rough blank having a surface the same as the object to be made but with larger axial and smaller lateral dimensions and having an opening at one axial end thereof, filling the blank with liquid and subjecting it to an axial pressurising action between a pair of half matrices shaped to correspond to the upper and lower portions of the object to be made having contacting surfaces coincident with the equator thereof so that an axial compressive action shortens the blank whilst the liquid expands the wall radially without any appreciable change in wall thickness into contact with the internal faces of the matrices when the latter are in contact. A blank 50, of e.g. aluminium or alloys thereof or plastic, having an opening 43 and a lower cylindrical portion is filled with liquid, e.g. oil or water, and located in a lower matrix 102, an upper matrix 104 fixed to a cylinder 107 of an hydraulic press 106 and having a bore 114, seal 115 and a non-return spring valve 118 is lowered to engage and axially compress the blank and the liquid therein to effect expansion of the blank until the matrices are completely closed together. A headed shaft 110 of the press 106 continues to move downwardly within the cylinder 107 to compress the liquid therein until a pressure release valve 121 is operated by which time complete expansion of the blank against the inner faces of the matrices will have been effected. Retraction of the cylinder 107 and shaft 110 causes replacement liquid to be drawn into the cylinder through a supply inlet 119 therein. The blank may be initially formed from a cylindrical tube 41 having a diameter 20% smaller than that of the finally produced sphere 30 and a portion 42, the diameter of which is substantially equal to that of the sphere. A sphere 10 having an opening 11 may be similarly formed. The blank may have a variable wall thickness.
GB791163A 1962-02-28 1963-02-27 Shaping method and apparatus Expired GB982808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR889470A FR1525853A (en) 1962-02-28 1962-02-28 Method for shaping monobloc convex hollow bodies and equipment for implementing this method

Publications (1)

Publication Number Publication Date
GB982808A true GB982808A (en) 1965-02-10

Family

ID=8773684

Family Applications (1)

Application Number Title Priority Date Filing Date
GB791163A Expired GB982808A (en) 1962-02-28 1963-02-27 Shaping method and apparatus

Country Status (4)

Country Link
BE (1) BE628946A (en)
CH (1) CH388887A (en)
FR (1) FR1525853A (en)
GB (1) GB982808A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275033A (en) * 1991-11-19 1994-01-04 Carnaudmetalbox Metal can body shaping installation

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU167979B (en) * 1973-07-13 1976-02-28 Koho Es Gepipari Miniszterium Method and apparatus for producing metal products particularly cartridges
GB2257073B (en) * 1991-07-04 1994-02-23 Cmb Foodcan Plc Apparatus and method for reshaping containers
GB9114444D0 (en) * 1991-07-04 1991-08-21 Cmb Foodcan Plc Apparatus and method for reshaping containers
US5746080A (en) * 1995-10-02 1998-05-05 Crown Cork & Seal Company, Inc. Systems and methods for making decorative shaped metal cans
US5832766A (en) * 1996-07-15 1998-11-10 Crown Cork & Seal Technologies Corporation Systems and methods for making decorative shaped metal cans
US5829290A (en) * 1996-02-14 1998-11-03 Crown Cork & Seal Technologies Corporation Reshaping of containers
US5938389A (en) * 1996-08-02 1999-08-17 Crown Cork & Seal Technologies Corporation Metal can and method of making

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275033A (en) * 1991-11-19 1994-01-04 Carnaudmetalbox Metal can body shaping installation

Also Published As

Publication number Publication date
CH388887A (en) 1965-03-15
FR1525853A (en) 1968-05-24
BE628946A (en)

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