(19)
(11) EP 1 992 463 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.10.2009 Bulletin 2009/43

(43) Date of publication A2:
19.11.2008 Bulletin 2008/47

(21) Application number: 08008615.0

(22) Date of filing: 07.05.2008
(51) International Patent Classification (IPC): 
B27G 13/00(2006.01)
 B27G 13/04(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 18.05.2007 JP 2007132389

(71) Applicant: KANEFUSA KABUSHIKI KAISHA
Niwa-gun, Aichi 480-0192 (JP)

(72) Inventor:
  • Ogasawara, Makoto
    Niwa-gun, Aichi, 480-0192 (JP)

(74) Representative: Kuhnen & Wacker 
Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A
85354 Freising
85354 Freising (DE)

   


(54) Rotational cutting tool


(57) A rotational cutting tool 10 includes a plurality of unit cutting tools 11A to 11C including rotational bodies 12A to 12C each in a cylindrical shape and formed with attachment grooves 25 twisted relative to an axial direction and extending between opposite ends at plural locations in a circumferential direction on an outer peripheral surface of the rotational body, and flat plate-like replaceable blades 31 slidably mounted to the attachment grooves 25, the unit cutting tools 11A to 11C coaxially overlapped to one another in such a manner that the attachment grooves 25 of the unit cutting tools adjacent to each other are not overlapped to each other in the direction along which the attachment grooves 25 are extending. Between opposite ends in an axial direction on an outer peripheral surface of at least one of a pair of the unit cutting tools adjacent to each other, replacement grooves 51 that are capable of receiving the replaceable blades 31 are formed as extensions from the attachment grooves 25 of the other unit cutting tool.







Search report