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Pub. No.:    WO/2011/061678    International Application No.:    PCT/IB2010/055191
Publication Date: Fri May 27 01:59:59 CEST 2011 International Filing Date: Wed Nov 17 00:59:59 CET 2010
IPC: B23Q 5/32
B23B 47/34
Applicants: MITIS
PEIGNE, Grégoire
Inventors: PEIGNE, Grégoire
The present invention relates to an axial machining device (1), which comprises a tool-holder spindle (3) rotating inside a frame (2), the latter housing a transmission system (5) causing the automatic advance of the spindle relative to the frame (2) during the rotation of the tool-holder spindle, said transmission system (5) comprising an advance pinion (15) screwed onto the spindle (3), said device being characterised in that it includes an elastic return member (40) biasing the advance pinion (15) in a first axial direction, preferably opposite the advance direction (A) of the spindle (3), and in that said device comprises a first bearing (50) comprising bearing members (51) rolling on a corrugated bearing surface having an axial component, such as to periodically bias the advance pinion (15) to move in a second direction opposite the first direction, such that the rotation of the spindle (3) is accompanied by an axial vibration movement.