FR2231946A2 - Conical workpiece cold forming machine - speed of rotation or tool advance altered gradually during operation - Google Patents
Conical workpiece cold forming machine - speed of rotation or tool advance altered gradually during operationInfo
- Publication number
- FR2231946A2 FR2231946A2 FR7319486A FR7319486A FR2231946A2 FR 2231946 A2 FR2231946 A2 FR 2231946A2 FR 7319486 A FR7319486 A FR 7319486A FR 7319486 A FR7319486 A FR 7319486A FR 2231946 A2 FR2231946 A2 FR 2231946A2
- Authority
- FR
- France
- Prior art keywords
- speed
- rotation
- during operation
- forming machine
- cold forming
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
- F42B1/036—Manufacturing processes therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A method of forming cone shaped workpieces, particularly nose cones for shells, by plastic cold working of a circular sheet metal blank, as in the main patent, instead of using two fixed speeds between the start and finish of the operation, varies the speed of the spindle according to a suitable law giving a faster speed during shaping of the apex reducing to a lower speed towards the larger diameter base region. Alternatively the speed of advance of the forming tool can be changed gradually producing a spiral action on the cone. Various combinations could also be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7319486A FR2231946A2 (en) | 1960-07-01 | 1973-05-29 | Conical workpiece cold forming machine - speed of rotation or tool advance altered gradually during operation |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR157435A FR95214E (en) | 1960-07-01 | 1960-07-01 | Advanced training in shaped charges. |
FR107197A FR1531530A (en) | 1967-05-22 | 1967-05-22 | Advanced training in shaped charges |
FR7319486A FR2231946A2 (en) | 1960-07-01 | 1973-05-29 | Conical workpiece cold forming machine - speed of rotation or tool advance altered gradually during operation |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2231946A2 true FR2231946A2 (en) | 1974-12-27 |
FR2231946B2 FR2231946B2 (en) | 1978-08-04 |
Family
ID=27244117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7319486A Granted FR2231946A2 (en) | 1960-07-01 | 1973-05-29 | Conical workpiece cold forming machine - speed of rotation or tool advance altered gradually during operation |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2231946A2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB436768A (en) * | 1934-03-14 | 1935-10-17 | Bergedorfer Eisenwerk Ag | Improved method for the manufacture of metal articles having portions of conical or conoidal form |
US2975743A (en) * | 1956-05-18 | 1961-03-21 | Lake Erie Machinery Corp | Metal forming machine |
US3490258A (en) * | 1966-06-03 | 1970-01-20 | Emerson Electric Co | Methods and apparatus for shaping workpieces |
-
1973
- 1973-05-29 FR FR7319486A patent/FR2231946A2/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB436768A (en) * | 1934-03-14 | 1935-10-17 | Bergedorfer Eisenwerk Ag | Improved method for the manufacture of metal articles having portions of conical or conoidal form |
US2975743A (en) * | 1956-05-18 | 1961-03-21 | Lake Erie Machinery Corp | Metal forming machine |
US3490258A (en) * | 1966-06-03 | 1970-01-20 | Emerson Electric Co | Methods and apparatus for shaping workpieces |
Also Published As
Publication number | Publication date |
---|---|
FR2231946B2 (en) | 1978-08-04 |
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