GB747572A - A method of press-forming hollow members - Google Patents
A method of press-forming hollow membersInfo
- Publication number
- GB747572A GB747572A GB22825/53A GB2282553A GB747572A GB 747572 A GB747572 A GB 747572A GB 22825/53 A GB22825/53 A GB 22825/53A GB 2282553 A GB2282553 A GB 2282553A GB 747572 A GB747572 A GB 747572A
- Authority
- GB
- United Kingdom
- Prior art keywords
- die
- blank
- ram
- casing
- annealed
- 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
- 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
- B21K21/08—Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/03—Making uncoated products by both direct and backward extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
747,572. Forging; extruding. BOSCH GES., R. Aug. 19, 1953 [Sept. 30, 1952], No. 22825/53. Classes 83 (2) and 83 (4). A hollow member with stepped walls, more particularly a sparking plug casing 17, is produced by pressing a hollow cylindrical blank, having a conical bore, in a die 13, Fig. 4, by means of a ram 15 to cause an enlarged head to be formed at one end by combined backward extrusion and radial spreading without endwise restraint. Simultaneously the forward end of the blank is extruded between an extension 16 of the ram and the die. The enlarged head is of hexagonal shape. An ejector plunger 18 removes the casing from the die. A solid cylindrical blank of 0.1 per cent carbon steel which has been annealed is first inserted in a die 2, Fig. 2, and pierced by a conical ram 3. A recess 6 is formed on the blank by a ram 7 which also ejects the blank from the die. The remaining core 12 of the blank is then removed by a further punch and die to form the blank 11, Fig. 3 (not shown). The casing 17, produced in the die 13, is annealed and is then " sized " in a die 19, Fig. 5. This operation produces end lips 22, 23 which are eventually removed by machining. All of the pressing operations and the shearing of the initial solid blank from a length of rod may be performed in a multipledie press.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE747572X | 1952-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB747572A true GB747572A (en) | 1956-04-11 |
Family
ID=6648661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22825/53A Expired GB747572A (en) | 1952-09-30 | 1953-08-19 | A method of press-forming hollow members |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB747572A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0036050A1 (en) * | 1980-03-19 | 1981-09-23 | Ford Motor Company Limited | Method of forming spark plug bodies |
| GB2141654A (en) * | 1983-06-20 | 1985-01-03 | Champion Spark Plug Co | Method of forming spark plug shells |
| CN113996667A (en) * | 2021-10-29 | 2022-02-01 | 南京航空航天大学 | Superplastic positive-negative bidirectional variable-temperature extrusion forming method and application |
-
1953
- 1953-08-19 GB GB22825/53A patent/GB747572A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0036050A1 (en) * | 1980-03-19 | 1981-09-23 | Ford Motor Company Limited | Method of forming spark plug bodies |
| GB2141654A (en) * | 1983-06-20 | 1985-01-03 | Champion Spark Plug Co | Method of forming spark plug shells |
| CN113996667A (en) * | 2021-10-29 | 2022-02-01 | 南京航空航天大学 | Superplastic positive-negative bidirectional variable-temperature extrusion forming method and application |
| CN113996667B (en) * | 2021-10-29 | 2022-11-29 | 南京航空航天大学 | Superplastic positive-negative bidirectional variable-temperature extrusion forming method and application |
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