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)
- 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.
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 JP JP13776578A patent/JPS5499070A/en active Pending
- 1978-11-08 CH CH1150878A patent/CH632427A5/en not_active IP Right Cessation
- 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 |
---|---|
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 |