GB899438A - Manufacture from sheet metal of hollow objects - Google Patents
Manufacture from sheet metal of hollow objectsInfo
- Publication number
- GB899438A GB899438A GB3898259A GB3898259A GB899438A GB 899438 A GB899438 A GB 899438A GB 3898259 A GB3898259 A GB 3898259A GB 3898259 A GB3898259 A GB 3898259A GB 899438 A GB899438 A GB 899438A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cup
- drawn
- sheet metal
- nov
- wall thickness
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
- B21K21/06—Shaping thick-walled hollow articles, e.g. projectiles
Abstract
899,438. Making projectile shells; forging; cupping. SVENSKA METALLVERKEN A.B. Nov. 17, 1959 [Nov. 17, 1958], No. 38982/59. Classes 83 (2) and 83 (4). A hollow metal article, particularly a projectile, having a closed end of increased wall thickness, is made by forming a sheet metal disc into a cup 26, Fig. 3, and then upsetting the closed end, Figs. 5, 6, to give it the required profile and increase its wall thickness. A disc of copper-plated iron sheet is deep drawn into a preliminary cup 9, Fig. 1 (not shown), further drawn into an intermediate cup 17 and then drawn through a die 24 into the shape 26. The irregular open end is then removed, preferably on a lathe, Fig. 4 (not shown), and the cup is upset in two stages, Figs. 5, 6, in successive dies 33, 39, by respective punches 30, 40. The dies have air vents 35 and the punches have sharpedged grooves into which the metal is pressed to facilitate withdrawal of the workpiece with the punch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1065358 | 1958-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB899438A true GB899438A (en) | 1962-06-20 |
Family
ID=20292651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3898259A Expired GB899438A (en) | 1958-11-17 | 1959-11-17 | Manufacture from sheet metal of hollow objects |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE584733A (en) |
| CH (1) | CH383304A (en) |
| GB (1) | GB899438A (en) |
-
1959
- 1959-11-17 GB GB3898259A patent/GB899438A/en not_active Expired
- 1959-11-17 BE BE584733A patent/BE584733A/en unknown
- 1959-11-17 CH CH8068359A patent/CH383304A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH383304A (en) | 1964-10-31 |
| BE584733A (en) | 1960-03-16 |
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