Patent ID: 7671296
Filing Date: 2010-03-02
Classification: B23K

Abstract:
1. A nose-piece for the laser-beam drilling head of a drilling machine, the nose-piece comprising: a laser beam entry opening for receiving an entering pulsed laser beam and a laser beam exit opening for emitting an emitted pulsed laser beam, a focusing means for focusing said entering pulsed laser beam, said focusing means being arranged upstream of the laser beam exit opening, a mirror positioned in an optical path of the entering pulsed laser beam downstream of said focusing means wherein said mirror is configured to reflect the entering pulsed laser beam into the direction of said emitted pulsed laser beam such that said emitted laser beam forms an angle of less than 180° with the entering pulsed laser beam, and a laser-beam fluid assisting feed configured to emit a fluid via the laser beam exit opening in the direction of the emitted pulsed laser beam, and a blade configured to protect said mirror against projection of waste material, wherein said blade is positioned between said mirror and said laser beam exit opening.