FR2326997A1 - Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet - Google Patents

Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet

Info

Publication number
FR2326997A1
FR2326997A1 FR7530684A FR7530684A FR2326997A1 FR 2326997 A1 FR2326997 A1 FR 2326997A1 FR 7530684 A FR7530684 A FR 7530684A FR 7530684 A FR7530684 A FR 7530684A FR 2326997 A1 FR2326997 A1 FR 2326997A1
Authority
FR
France
Prior art keywords
developable surfaces
sheet
fluid pressure
desired shape
developable
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.)
Withdrawn
Application number
FR7530684A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7530684A priority Critical patent/FR2326997A1/en
Publication of FR2326997A1 publication Critical patent/FR2326997A1/en
Withdrawn legal-status Critical Current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
    • B21D26/053—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 characterised by the material of the blanks
    • B21D26/057—Tailored blanks
    • 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
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor

Abstract

A non-developable surface is formed from a fabricated approximation of the required shape, by injecting fluid under press. until the required deformation is obtained; heat may be applied at the same time, partic. with thermoplastic materials. Metal may need annealing before and/or after the pressure is applied. A torus of circular section can thus be formed from one of square section: the latter can be fabricated from two coaxial cylindrical sleeves joined top and bottom by circular rings. A sphere can be formed from a surface of revolution whose cross section is an octagon; this surface is composed of a cylinder, two conical frusta and two circular discs. If a sheet of uniform thickness is used, a sphere results when press. is applied; if the circular discs are thicker than the rest, the surface becomes ellipsoidal.
FR7530684A 1975-10-07 1975-10-07 Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet Withdrawn FR2326997A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7530684A FR2326997A1 (en) 1975-10-07 1975-10-07 Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7530684A FR2326997A1 (en) 1975-10-07 1975-10-07 Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet

Publications (1)

Publication Number Publication Date
FR2326997A1 true FR2326997A1 (en) 1977-05-06

Family

ID=9160901

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7530684A Withdrawn FR2326997A1 (en) 1975-10-07 1975-10-07 Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet

Country Status (1)

Country Link
FR (1) FR2326997A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041979A1 (en) * 1996-05-06 1997-11-13 Lincoln Raikes Process for manufacturing metal bodies
FR2809033A1 (en) * 2000-05-22 2001-11-23 Aerospatiale Matra Lanceurs St ALUMINUM ALLOY DOME, ESPECIALLY FOR FORMING A TANK BOTTOM, AND METHOD FOR MANUFACTURING THE SAME
CN1099332C (en) * 1998-09-28 2003-01-22 高志芳 Method for manufacturing cap of container
CN103586323A (en) * 2013-12-02 2014-02-19 哈尔滨工业大学 Hydraulic forming method of ellipsoid container with double axis length ratios
CN110743956A (en) * 2019-11-04 2020-02-04 哈尔滨工业大学 Ellipsoid shell shaft length size control method and system based on liquid volume loading

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041979A1 (en) * 1996-05-06 1997-11-13 Lincoln Raikes Process for manufacturing metal bodies
AU726355B2 (en) * 1996-05-06 2000-11-02 Metal Bodies Inventions Limited Process for manufacturing metal bodies
CN1099332C (en) * 1998-09-28 2003-01-22 高志芳 Method for manufacturing cap of container
FR2809033A1 (en) * 2000-05-22 2001-11-23 Aerospatiale Matra Lanceurs St ALUMINUM ALLOY DOME, ESPECIALLY FOR FORMING A TANK BOTTOM, AND METHOD FOR MANUFACTURING THE SAME
EP1157762A1 (en) * 2000-05-22 2001-11-28 Eads Launch Vehicles Dome made of aluminium alloy, especially to form a bottom of a tank and method to produce the same
WO2001089733A1 (en) * 2000-05-22 2001-11-29 Eads Launch Vehicles Aluminium alloy dome, in particular for forming a reservoir base, and method for making same
US6629353B2 (en) 2000-05-22 2003-10-07 Eads Launch Vehicles Dome made of aluminum alloy; particularly intended to form the bottom of a tank; and method of manufacturing it
CN103586323A (en) * 2013-12-02 2014-02-19 哈尔滨工业大学 Hydraulic forming method of ellipsoid container with double axis length ratios
CN103586323B (en) * 2013-12-02 2015-06-24 哈尔滨工业大学 Hydraulic forming method of ellipsoid container with double axis length ratios
CN110743956A (en) * 2019-11-04 2020-02-04 哈尔滨工业大学 Ellipsoid shell shaft length size control method and system based on liquid volume loading

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Legal Events

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ST Notification of lapse