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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 operation

Info

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
Application number
FR7319486A
Other languages
French (fr)
Other versions
FR2231946B2 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALSETEX
Original Assignee
ALSETEX
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from FR157435A external-priority patent/FR95214E/en
Priority claimed from FR107197A external-priority patent/FR1531530A/en
Application filed by ALSETEX filed Critical ALSETEX
Priority to FR7319486A priority Critical patent/FR2231946A2/en
Publication of FR2231946A2 publication Critical patent/FR2231946A2/en
Application granted granted Critical
Publication of FR2231946B2 publication Critical patent/FR2231946B2/fr
Granted legal-status Critical Current

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.
FR7319486A 1960-07-01 1973-05-29 Conical workpiece cold forming machine - speed of rotation or tool advance altered gradually during operation Granted FR2231946A2 (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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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