FR2408406A1 - METHOD AND APPARATUS FOR FORMING ELONGATED SHELLS WITH A TAPERED WALL - Google Patents

METHOD AND APPARATUS FOR FORMING ELONGATED SHELLS WITH A TAPERED WALL

Info

Publication number
FR2408406A1
FR2408406A1 FR7831694A FR7831694A FR2408406A1 FR 2408406 A1 FR2408406 A1 FR 2408406A1 FR 7831694 A FR7831694 A FR 7831694A FR 7831694 A FR7831694 A FR 7831694A FR 2408406 A1 FR2408406 A1 FR 2408406A1
Authority
FR
France
Prior art keywords
opening
circle
hull
blank
sector
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Withdrawn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
FR7831694A
Other languages
French (fr)
Inventor
Charles Henry Deveney
Ronald Lee Kolakowski
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.)
Howmet Aerospace Inc
Original Assignee
Aluminum Company of America
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
Priority claimed from US05/849,996 external-priority patent/US4129024A/en
Priority claimed from US05/852,319 external-priority patent/US4142396A/en
Application filed by Aluminum Company of America filed Critical Aluminum Company of America
Publication of FR2408406A1 publication Critical patent/FR2408406A1/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Withdrawn legal-status Critical Current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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/54—Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/21—Deep-drawing without fixing the border of the blank
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Wire Processing (AREA)
  • Metal Extraction Processes (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

LA COQUE A UNE PAROI LATERALE MINCE ET UNE EXTREMITE RELATIVEMENT EPAISSE FAISANT CORPS AVEC ELLE ET EST FORMEE A PARTIR D'UNE EBAUCHE CIRCULAIRE DECOUPEE DANS UNE TOLE. LE PROCEDE CONSISTE A FORMER UNE EBAUCHE30 DANS UN PORTE-EBAUCHE SUR UNE MATRICE10, 20 DE FORMATION DE COQUE AYANT UNE OUVERTURE D'ENTREE 21 ET UNE OUVERTURE DE SORTIE22 QUI A SENSIBLEMENT LES MEMES DIMENSIONS QUE L'EBAUCHE A ETIRER, LA MATRICE AYANT UNE CAVITE DONT LES PAROIS CONVERGENT VERS L'INTERIEUR DE L'OUVERTURE D'ENTREE A L'OUVERTURE DE SORTIE ET EST DELIMITEE PAR UN ARC D'UN SECTEUR DE CERCLE, QUI VA DE L'OUVERTURE D'ENTREE A L'OUVERTURE DE SORTIE, LE SECTEUR DE CERCLE AYANT UN ANGLEA COMPRIS ENTRE 12 ET 34 ET LE CENTRE DU CERCLE SE TROUVANT DANS LE MEME PLAN QUE L'OUVERTURE DE SORTIE, ET A DEPLACER L'EBAUCHE A TRAVERS LA MATRICE A L'AIDE D'UN POINCON50 POUR FORMER LA COQUE . FABRICATION DES ETUIS DE CARTOUCHES.THE HULL HAS A THIN SIDE WALL AND A RELATIVELY THICK END THAT IS BODY WITH IT AND IS SHAPED FROM A CIRCULAR BLANK CUT FROM A SHEET. THE PROCESS CONSISTS OF FORMING A BLANK30 IN A BLANK HOLDER ON A DIE10, 20 OF SHELL FORMING HAVING AN INLET OPENING 21 AND AN OUTLET OPENING 22 WHICH HAS SENSITIVELY THE SAME DIMENSIONS AS THE BLANK TO BE STRETCHED, THE DIE HAVING A CAVITY OF WHICH THE WALLS CONVERG INTO THE INTERIOR FROM THE ENTRY OPENING TO THE EXIT OPENING AND IS BOUNDED BY AN ARC OF A CIRCLE SECTOR, WHICH GOES FROM THE ENTRY OPENING TO THE EXIT OPENING , THE SECTOR OF THE CIRCLE HAVING AN ANGLEA INCLUDED BETWEEN 12 AND 34 AND THE CENTER OF THE CIRCLE IS IN THE SAME PLANE AS THE OUTPUT OPENING, AND TO MOVE THE ROUGH THROUGH THE MATRIX USING A PUNCH50 FOR FORM THE HULL. MANUFACTURE OF CARTRIDGE CASES.

FR7831694A 1977-11-09 1978-11-09 METHOD AND APPARATUS FOR FORMING ELONGATED SHELLS WITH A TAPERED WALL Withdrawn FR2408406A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/849,996 US4129024A (en) 1977-11-09 1977-11-09 Method and apparatus for forming elongated, tapered wall shells
US05/852,319 US4142396A (en) 1977-11-17 1977-11-17 Blanking and forming tapered wall articles

Publications (1)

Publication Number Publication Date
FR2408406A1 true FR2408406A1 (en) 1979-06-08

Family

ID=27126889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7831694A Withdrawn FR2408406A1 (en) 1977-11-09 1978-11-09 METHOD AND APPARATUS FOR FORMING ELONGATED SHELLS WITH A TAPERED WALL

Country Status (11)

Country Link
JP (1) JPS5499070A (en)
CA (1) CA1081549A (en)
CH (1) CH632427A5 (en)
DE (1) DE2847812A1 (en)
FR (1) FR2408406A1 (en)
GB (1) GB2007570B (en)
IL (1) IL55784A (en)
IT (1) IT1106787B (en)
NL (1) NL7810626A (en)
NO (1) NO783613L (en)
SE (1) SE7810891L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2508504B2 (en) * 1986-03-28 1996-06-19 三菱マテリアル株式会社 Method for manufacturing thick cylindrical hollow body made of copper-based memory alloy
CN113102532B (en) * 2021-04-14 2022-03-25 中北大学 Labor-saving forming method suitable for large-size thin-wall conical shell

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345863A (en) * 1939-03-04 1944-04-04 Remington Arms Co Inc Projectile
US2379450A (en) * 1942-06-16 1945-07-03 Musser Clarence Walton Primer manufacture
US2415940A (en) * 1944-10-05 1947-02-18 Remington Arms Co Inc Metal cupping process
US2490926A (en) * 1945-06-01 1949-12-13 Remington Arms Co Inc Blanking and cupping die unit
US3977225A (en) * 1975-03-27 1976-08-31 Aluminum Company Of America Forging method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345863A (en) * 1939-03-04 1944-04-04 Remington Arms Co Inc Projectile
US2379450A (en) * 1942-06-16 1945-07-03 Musser Clarence Walton Primer manufacture
US2415940A (en) * 1944-10-05 1947-02-18 Remington Arms Co Inc Metal cupping process
US2490926A (en) * 1945-06-01 1949-12-13 Remington Arms Co Inc Blanking and cupping die unit
US3977225A (en) * 1975-03-27 1976-08-31 Aluminum Company Of America Forging method

Also Published As

Publication number Publication date
GB2007570B (en) 1982-06-30
NL7810626A (en) 1979-05-11
IL55784A (en) 1981-07-31
CA1081549A (en) 1980-07-15
IT7851794A0 (en) 1978-11-07
GB2007570A (en) 1979-05-23
SE7810891L (en) 1979-05-10
CH632427A5 (en) 1982-10-15
JPS5499070A (en) 1979-08-04
DE2847812A1 (en) 1979-05-10
IT1106787B (en) 1985-11-18
NO783613L (en) 1979-05-10

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Legal Events

Date Code Title Description
ST Notification of lapse