GB914200A - Improvements in or relating to extrusion apparatus - Google Patents
Improvements in or relating to extrusion apparatusInfo
- Publication number
- GB914200A GB914200A GB355560A GB355560A GB914200A GB 914200 A GB914200 A GB 914200A GB 355560 A GB355560 A GB 355560A GB 355560 A GB355560 A GB 355560A GB 914200 A GB914200 A GB 914200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- extrusion
- punch
- tapered
- discard
- 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
- 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
- B21C25/00—Profiling tools for metal extruding
- B21C25/04—Mandrels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
914,200. Extruding. FIELDING & PLATT Ltd., and ROWLES, D. V. March 16, 1961 [Feb. 1, 1960], No. 3555/60. Class 83 (4). An extrusion tool assembly for forming open-ended metal tubes 8, Fig. 3, comprises a die 1 having a flared entry face 3 and a co-operating punch and mandrel 4 formed with tapered surfaces shaped to produce a flared discard 7, Fig. 3, of tapering thickness towards its periphery. An enlarged portion 6 of the mandrel produces an enlarged bore in the extruded tube towards the end of extrusion, thereby facilitating withdrawal of the mandrel. In the extrusion of tubes a pre-drilled machined billet coated with lubricant is used; after extrusion another billet is placed in the container in contact with the discard and extrusion re-commences. In other embodiments, Figs. 4, 5 (not shown), the mandrel has a tapered nose and a tapered portion 6. In another embodiment, Fig. 6 (not shown), the mandrel is separate from the punch and in a further embodiment, Fig. 7 (not shown), the mandrel is integral with a punch nose detachably secured to the punch body by a spring- loaded bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB355560A GB914200A (en) | 1960-02-01 | 1960-02-01 | Improvements in or relating to extrusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB355560A GB914200A (en) | 1960-02-01 | 1960-02-01 | Improvements in or relating to extrusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB914200A true GB914200A (en) | 1962-12-28 |
Family
ID=9760556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB355560A Expired GB914200A (en) | 1960-02-01 | 1960-02-01 | Improvements in or relating to extrusion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB914200A (en) |
-
1960
- 1960-02-01 GB GB355560A patent/GB914200A/en not_active Expired
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