(19)
(11) EP 1 166 916 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.02.2003 Bulletin 2003/07

(43) Date of publication A2:
02.01.2002 Bulletin 2002/01

(21) Application number: 01114156.1

(22) Date of filing: 11.06.2001
(51) International Patent Classification (IPC)7: B21H 3/06
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 13.06.2000 JP 1766372000

(71) Applicants:
  • AOYAMA SEISAKUSHO CO., LTD.
    Nagoya-shi, Aichi-ken (JP)
  • Sanmei Works, Co., Ltd.
    Kasugai-shi, Aichi (JP)

(72) Inventors:
  • Kato, Keigo, c/o Ohguchi Plant
    Niwa-gun, Aichi (JP)
  • Mizuno, Masataka, c/o Ohguchi Plant
    Niwa-gun, Aichi (JP)
  • Kato, Atsushi, c/o Ohguchi Plant
    Niwa-gun, Aichi (JP)
  • Taniguchi, Naoshige, c/o Sanmei Works Co., Ltd.
    Kasugai-shi, Aichi (JP)

(74) Representative: Betten & Resch 
Patentanwälte, Theatinerstrasse 8
80333 München
80333 München (DE)

   


(54) Reciprocating type thread rolling apparatus


(57) The present invention relates to a reciprocating type thread rolling apparatus and comprises a ram (7) reciprocated by a crank shaft and fixing to one side thereof at least two moving dies (10a,10b), the other side of the ram (7) being disposed along a single thread rolling pressure bearing block (11), and stationary dies (9a,9b) adapted to pair with the moving dies for thread rolling, the stationary dies being the same in number as that of the moving dies and disposed to be opposite to the moving dies.






Search report