Drill with cooling-lubricant channel

Details Drill with cooling-lubricant channel Drill with cooling-lubricant channel

B - Operations, Transporting

23

B

B23B 51/06 (2006.01)

Patent

CA 2226754

The invention concerns a drill with a least one central channel for cooling- lubricant oil feed. The drill has a shaft with at least one flute (4) running in a spiral round the shaft axis. Whereas in conventional drills of this kind the oil channels end in outlet apertures in the flanks of the main cutting edges, this is not the case with the drill proposed. Instead, the oil is fed to the point of application of the drill through lateral outlet apertures which are joined to the at least one oil channel (18) by connecting channels.

L'invention concerne un foret comportant au moins un canal central destiné à acheminer un réfrigérant lubrifiant. Le foret comporte au moins une rainure d'enlèvement de copeaux (4) qui s'étend en spirale autour de l'axe dudit foret et une tige. Dans les forets classiques de ce type, les canaux à fluide débouchent par l'intermédiaire d'orifices de sortie dans les faces de dépouille des tranchants principaux. Ce n'est pas le cas dans le présent foret. L'acheminement du fluide au point d'action du foret s'effectue davantage par l'intermédiaire d'orifices de sortie latéraux, reliés au(x) canal(aux) à fluide (18) par l'intermédiaire de canaux de jonction.

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