(19)
(11) EP 2 095 905 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.09.2013 Bulletin 2013/39

(43) Date of publication A2:
02.09.2009 Bulletin 2009/36

(21) Application number: 09151927.2

(22) Date of filing: 03.02.2009
(51) International Patent Classification (IPC): 
B24B 3/24(2006.01)
B24B 3/54(2006.01)
 B24B 3/52(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 MK MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 27.02.2008 IT MI20080317

(71) Applicant: Berni, Nicola
42045 Luzzara RE (IT)

(72) Inventor:
  • Berni, Nicola
    42045 Luzzara RE (IT)

(74) Representative: Modiano, Micaela Nadia et al
Modiano & Partners (IT) Via Meravigli, 16
20123 Milano
20123 Milano (IT)

   


(54) Sharpening apparatus, particularly for drilling bits


(57) A sharpening apparatus (1), particularly for drilling bits, comprising, within a containment enclosure (2), a frustum-shaped grinding wheel (10), which is connected to a shaft (11) turned by motor means (12), the apparatus further comprising, on the containment enclosure (2), a registration assembly (20) for the axial positioning of a bit (26) to be sharpened in a supporting mandrel (22); on the containment enclosure (2), a sharpening seat (50) being also provided for accommodating the supporting mandrel (22) with a presettable positioning angle of the sharp edge of the bit (26) to be sharpened with respect to the frustum-shaped grinding wheel (10).







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Search report