GB2007570A - Forming Elongated Shells - Google Patents

Forming Elongated Shells

Info

Publication number
GB2007570A
GB2007570A GB7841430A GB7841430A GB2007570A GB 2007570 A GB2007570 A GB 2007570A GB 7841430 A GB7841430 A GB 7841430A GB 7841430 A GB7841430 A GB 7841430A GB 2007570 A GB2007570 A GB 2007570A
Authority
GB
United Kingdom
Prior art keywords
blank
blanks
die
blank holder
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.)
Granted
Application number
GB7841430A
Other versions
GB2007570B (en
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 GB2007570A publication Critical patent/GB2007570A/en
Application granted granted Critical
Publication of GB2007570B publication Critical patent/GB2007570B/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
    • 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)
  • Wire Processing (AREA)
  • Press Drives And Press Lines (AREA)
  • Metal Extraction Processes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

Elongated, thin wall cartridge cases or other shells are formed from substantially circular blanks 32 cut from sheet material 30 by steps including providing a blank in a blank holder 20 on a shell forming die 100 having an effective entrance and exit aperture. The wall connecting the entrance and exit apertures is defined by an arc 108 of a sector of a circle, the sector having an angle in the range of 12 to 34 DEG . The thin wall shell is formed by displacing the blank through the die by action of a punch 50. Blanks 32 may be provided in said blank holder 20 by punching blanks from sheet material 30 using a blanking punch 10 axially aligned with a blanking die 20 serving as the blank holder.
GB7841430A 1977-11-09 1978-10-20 Method and apparatus for forming elongated tapered wall shells Expired GB2007570B (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 (2)

Publication Number Publication Date
GB2007570A true GB2007570A (en) 1979-05-23
GB2007570B GB2007570B (en) 1982-06-30

Family

ID=27126889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7841430A Expired GB2007570B (en) 1977-11-09 1978-10-20 Method and apparatus for forming elongated tapered wall shells

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113102532A (en) * 2021-04-14 2021-07-13 中北大学 Labor-saving forming method suitable for large-size thin-wall conical shell

Families Citing this family (1)

* 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

Family Cites Families (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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113102532A (en) * 2021-04-14 2021-07-13 中北大学 Labor-saving forming method suitable for large-size thin-wall conical shell
CN113102532B (en) * 2021-04-14 2022-03-25 中北大学 Labor-saving forming method suitable for large-size thin-wall conical shell

Also Published As

Publication number Publication date
NL7810626A (en) 1979-05-11
DE2847812A1 (en) 1979-05-10
IL55784A (en) 1981-07-31
JPS5499070A (en) 1979-08-04
IT7851794A0 (en) 1978-11-07
GB2007570B (en) 1982-06-30
CH632427A5 (en) 1982-10-15
NO783613L (en) 1979-05-10
IT1106787B (en) 1985-11-18
FR2408406A1 (en) 1979-06-08
SE7810891L (en) 1979-05-10
CA1081549A (en) 1980-07-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee