(19)
(11) EP 0 870 559 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.06.1999 Bulletin 1999/23

(43) Date of publication A2:
14.10.1998 Bulletin 1998/42

(21) Application number: 98106366.2

(22) Date of filing: 07.04.1998
(51) International Patent Classification (IPC)6: B21K 1/76
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 08.04.1997 IT BO970209

(71) Applicant: CHIAVETTE UNIFICATE S.p.A.
I-40069 Zola Predosa (IT)

(72) Inventors:
  • Triolo, Innocenzo
    40033 Casalecchio Di Reno (IT)
  • Salerno, Claudio
    40133 Bologna (IT)

(74) Representative: Franzolin, Luigi et al
STUDIO TORTA S.r.l., Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Apparatus for producing a spherical element for the head of a ball joint


(57) Apparatus (1) for producing a ball element (2) for a ball joint head, the said ball element (2) being provided with a central through hole (24), the apparatus (1) being characterised in that it comprises:
  • a cutting station for producing substantially cylindrical metal workpiece blanks;
  • at least one cold forming station (30, 40, 50, 60) for cold forming the said metal blanks;
  • a shearing station (70) in which a central part (23) of the workpiece is sheared;
  • means for displacing the workpiece to and from the cutting station, the cold forming stations (30, 40, 50, 60) and the shearing station (70); and
  • a control unit (10) for controlling the operations.






Search report