公开(公告)号：US09649699B2

公开(公告)日：2017-05-16

申请号：US14716868

申请日：2015-05-19

Applicant: AIRBUS GROUP SAS

Inventor： Fernand Vinhas ,  Daniel Aliaga ,  Guillaume Abrivard ,  Dominique Schuster

IPC: B23B1/00 ,  B23B41/00 ,  B23B35/00 ,  B23B51/00

CPC classification number: B23B41/00 ,  B23B35/00 ,  B23B51/00 ,  B23B2222/28 ,  B23B2222/88 ,  B23B2226/275 ,  B23B2226/31 ,  B23B2228/36 ,  B23B2251/14 ,  B23B2251/202 ,  B23B2251/204 ,  B23B2265/12

Abstract: A method for drilling through an assembly forming a stack of at least two different materials uses a drill bit having at least a first cutting edge and a second cutting edge inclined in an axial plane of the drill bit so that the end of the drill bit has a projecting conical shape. The first cutting edge is configured to drill a first material. The second cutting edge is made differently from the first cutting edge, to drill a second material. A first rotational drive axis of the drill bit is laterally offset during the drilling by an offset distance D relative to the axis of the drill bit in a direction opposite the first cutting edge when the drill bit is drilling through the first material, and alternately, in a direction opposite the second cutting edge when the drill bit is drilling through the second material.