US 12,145,204 B2
Broaching tool, broaching machine comprising such a tool and method for machining a workpiece using such a machine
Vincent Chomienne, Moissy-Cramayel (FR); and Mickael Rancic, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/600,326
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Apr. 2, 2020, PCT No. PCT/FR2020/000081
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2020/201641, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 1903571 (FR), filed on Apr. 3, 2019.
Prior Publication US 2022/0168827 A1, Jun. 2, 2022
Int. Cl. B23D 43/02 (2006.01); B23D 37/06 (2006.01); B23D 39/00 (2006.01)
CPC B23D 37/06 (2013.01) [B23D 39/00 (2013.01); B23D 43/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A broaching tool, comprising:
at least one cutting area comprising a cutting face configured to come into contact with a workpiece to remove material, in the shape of at least one chip, from said workpiece,
at least one cavity corresponding to said cutting area, said cavity being arranged to receive said at least one chip,
at least three lubrication channels associated with the or each cavity and configured to be supplied with lubricant, each lubrication channel having an inlet orifice arranged to receive the lubricant and at least one outlet orifice opening into said cavity, wherein a distance between the outlet orifices of two consecutive lubrication channels of the at least three lubrication channels increases by moving away from the cutting face.