GB2007570A - Forming Elongated Shells - Google Patents
Forming Elongated ShellsInfo
- 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
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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Metal Extraction Processes (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.
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)
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)
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)
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 |
-
1978
- 1978-10-19 SE SE7810891A patent/SE7810891L/en unknown
- 1978-10-20 GB GB7841430A patent/GB2007570B/en not_active Expired
- 1978-10-24 IL IL55784A patent/IL55784A/en unknown
- 1978-10-25 NO NO783613A patent/NO783613L/en unknown
- 1978-10-25 NL NL7810626A patent/NL7810626A/en not_active Application Discontinuation
- 1978-11-02 DE DE19782847812 patent/DE2847812A1/en not_active Withdrawn
- 1978-11-07 IT IT51794/78A patent/IT1106787B/en active
- 1978-11-08 CH CH1150878A patent/CH632427A5/en not_active IP Right Cessation
- 1978-11-08 JP JP13776578A patent/JPS5499070A/en active Pending
- 1978-11-09 FR FR7831694A patent/FR2408406A1/en not_active Withdrawn
- 1978-11-09 CA CA316,023A patent/CA1081549A/en not_active Expired
Cited By (2)
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 |
---|---|
FR2408406A1 (en) | 1979-06-08 |
IT1106787B (en) | 1985-11-18 |
NO783613L (en) | 1979-05-10 |
GB2007570B (en) | 1982-06-30 |
IL55784A (en) | 1981-07-31 |
DE2847812A1 (en) | 1979-05-10 |
SE7810891L (en) | 1979-05-10 |
JPS5499070A (en) | 1979-08-04 |
CH632427A5 (en) | 1982-10-15 |
NL7810626A (en) | 1979-05-11 |
CA1081549A (en) | 1980-07-15 |
IT7851794A0 (en) | 1978-11-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |