GB622938A - Apparatus for forging work pieces with large variations of cross-section - Google Patents

Apparatus for forging work pieces with large variations of cross-section

Info

Publication number
GB622938A
GB622938A GB24747/46A GB2474746A GB622938A GB 622938 A GB622938 A GB 622938A GB 24747/46 A GB24747/46 A GB 24747/46A GB 2474746 A GB2474746 A GB 2474746A GB 622938 A GB622938 A GB 622938A
Authority
GB
United Kingdom
Prior art keywords
dies
pistons
work
ramps
pressure
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
Application number
GB24747/46A
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.)
Compagnie des Forges et Acieries de la Marine et dHomecourt
Original Assignee
Compagnie des Forges et Acieries de la Marine et dHomecourt
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
Application filed by Compagnie des Forges et Acieries de la Marine et dHomecourt filed Critical Compagnie des Forges et Acieries de la Marine et dHomecourt
Publication of GB622938A publication Critical patent/GB622938A/en
Expired legal-status Critical Current

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
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/08—Making machine elements axles or shafts crankshafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

622,938. Forging-machines; dies. COMPAGNIE DES FORGES ET ACIERIES DE LA MARINE & D'HOMECOURT. Aug. 20, 1946, No. 24747. Convention date, Dec. 7, 1944. [Class 83 (iv)] Making crank shafts.-Apparatus for forging articles such as crank shafts comprising enlarged parts separated by constrictions, comprises end dies to receive the extremities of the blank and two central half-dies acting transversely for the lateral displacement of part of the blank, the end dies being moved together during the downward movement of the central die by means of ramps associated with the central die and engaging ramps associated with each of the end dies. The apparatus comprises a bed 1 with guideways along which may move cradles 3 supporting the lower halves. of dies 9 adapted to hold the work at each side of the portion to be forged. The bed also comprises a central cylinder in which operates a piston 4 carrying the lower part 10 of a central die, the upper part 11 of which is carried by a crosshead 2 adapted to be moved downwardly by a ram. Pistons 5 operating in the crosshead serve to force the upper parts of the workholding dies 9 into contact with the work, the pressure in the cylinders being limited by spring-controlled exhaust valvos. In operation, and starting from the position shown in Fig. 1, pressure fluid is admitted to the cylinders of the pistons 5 so that the work is firmly gripped by the dies 9. The cross-head is then moved downwardly so that ramps 17 depending from each side thereof engage corresponding ramps 16 formed on the outer ends of each of the workholding dies. Thus as the portion of the work gripped between the dies 10 and 11 is moved bodily downwards against the pressure of the cushioning piston 4, the dies 9 are moved together. After the forging operation and the withdrawal of the ram pressure from the crosshead, the parts are returned to their original positions by other fluid actuated pistons such as the pistons 8 serving to raise the cross-head.
GB24747/46A 1944-12-07 1946-08-20 Apparatus for forging work pieces with large variations of cross-section Expired GB622938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR622938X 1944-12-07

Publications (1)

Publication Number Publication Date
GB622938A true GB622938A (en) 1949-05-10

Family

ID=8986145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24747/46A Expired GB622938A (en) 1944-12-07 1946-08-20 Apparatus for forging work pieces with large variations of cross-section

Country Status (1)

Country Link
GB (1) GB622938A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042353B (en) * 1957-03-30 1958-10-30 Ernst Vom Bovert Method and device for pressing crank pieces consisting of two cheeks and the crank pin for assembled crankshafts
DE1049201B (en) * 1953-11-23 1959-01-22 Loire Atel Forges Forging press for crankshafts
DE1099320B (en) * 1959-01-02 1961-02-09 Fertigungstechnik U Maschb Ges Method and device for rolling in the journal points of a hollow crankshaft
DE1268480B (en) * 1956-02-23 1968-05-16 Schloemann Ag Press for forging crankshaft necks
WO2017191334A1 (en) * 2016-05-05 2017-11-09 Cie Automotive, S.A. Swaging device and press

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049201B (en) * 1953-11-23 1959-01-22 Loire Atel Forges Forging press for crankshafts
DE1268480B (en) * 1956-02-23 1968-05-16 Schloemann Ag Press for forging crankshaft necks
DE1042353B (en) * 1957-03-30 1958-10-30 Ernst Vom Bovert Method and device for pressing crank pieces consisting of two cheeks and the crank pin for assembled crankshafts
DE1099320B (en) * 1959-01-02 1961-02-09 Fertigungstechnik U Maschb Ges Method and device for rolling in the journal points of a hollow crankshaft
WO2017191334A1 (en) * 2016-05-05 2017-11-09 Cie Automotive, S.A. Swaging device and press
US11103916B2 (en) 2016-05-05 2021-08-31 Cie Automotive, S.A. Swaging device and press

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