(19)
(11)EP 3 260 236 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
16.05.2018 Bulletin 2018/20

(43)Date of publication A2:
27.12.2017 Bulletin 2017/52

(21)Application number: 17176579.5

(22)Date of filing:  19.06.2017
(51)Int. Cl.: 
B24B 13/04  (2006.01)
B24D 7/10  (2006.01)
B24B 57/02  (2006.01)
(84)Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30)Priority: 22.06.2016 IT UA20164592

(71)Applicant: Biesse S.p.A.
61122 Chiusa di Ginestreto (Pesaro Urbino) (IT)

(72)Inventors:
  • BELLI, Marco
    I-61122 Chiusa di Ginestreto (Pesaro Urbino) (IT)
  • CUCCHI, Andrea
    I-61122 Chiusa di Ginestreto (Pesaro Urbino) (IT)
  • FURLANI, Marco
    I-61122 Chiusa di Ginestreto (Pesaro Urbino) (IT)
  • GERVASONI, Massimiliano
    I-61122 Chiusa di Ginestreto (Pesaro Urbino) (IT)
  • LONGATO, Roberto
    I-61122 Chiusa di Ginestreto (Pesaro Urbino) (IT)

(74)Representative: Notaro, Giancarlo 
Buzzi, Notaro & Antonielli d'Oulx Corso Vittorio Emanuele ll, 6
10123 Torino
10123 Torino (IT)

  


(54)METHOD AND SYSTEM FOR FEEDING A COOLING FLUID DURING MACHINING OF A WORKPIECE BY MEANS OF A CUP GRINDING WHEEL, AND CUP GRINDING WHEEL USED THEREIN


(57) During machining of a workpiece (L) by means of a cup grinding wheel (8) controlled by a rotating spindle (3), coolant is fed into the area of contact between the annular front surface (91) of the cup grinding wheel (8) and the workpiece (L) being machined, by means of passages (81) formed in the body of the cup grinding wheel (8) and leading to said annular front surface (91). These passages (81) receive coolant fed by one or more coolant dispensers (10) arranged in fixed positions on the outside of the spindle (3) and configured to direct jets of coolant inside the cup grinding wheel body and through the aforesaid passageways leading to the annular front surface (91) of the cup grinding wheel (8). In the annular front surface (91) of the cup grinding wheel (8), at least one circumferential continuous groove (T) is formed that follows a wavy path, in order to cover a predominant portion of the radial extension of the aforesaid annular front surface (91) of the cup grinding wheel (8).