(19)
(11) EP 0 864 384 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.05.2001 Bulletin 2001/22

(43) Date of publication A2:
16.09.1998 Bulletin 1998/38

(21) Application number: 98200758.5

(22) Date of filing: 10.03.1998
(51) International Patent Classification (IPC)7: B21D 28/16
(84) Designated Contracting States:
AT BE CH 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: 12.03.1997 IT MI970538

(71) Applicant: Donatiello, Gaetano
20035 Lissone (Milano) (IT)

(72) Inventor:
  • Donatiello, Gaetano
    20035 Lissone (Milano) (IT)

(74) Representative: Martegani, Franco et al
Franco Martegani S.r.l. Via Carlo Alberto, 41
20052 Monza (Milano)
20052 Monza (Milano) (IT)

   


(54) Process for cutting metallic pieces with a high degree of finishing


(57) A process for cutting metallic pieces with a high degree of precision and surface finishing from a continuous material or cut-down sizes inserted into a die between a matrix (12) and a punch (13) interacting between each other, comprising:
  • a first cutting phase in which a piece (10) is separated from a scrap or other piece (11) opposite a surface having a mixed profile;
  • a second cutting phase of said piece (10) opposite said surface having a mixed profile (15, 16, 17), so as to achieve a smooth finished surface (21).






Search report