Patent ID: 9694446
Date: 2017-07-04
CPC Classifications: B23K

Claim:
1. A method for drilling precise orifices in a wall of non-uniform thickness, the method comprising: creating a thickness profile of at least a portion of the wall; irradiating the wall with at least one laser beam to ablate a portion of the wall to thereby form an orifice in the wall, wherein during the irradiation one or more parameters of the at least one laser beam are adjusted one or more times in accordance with the thickness profile to compensate for the non-uniform thickness of the wall; and the orifice fully penetrating the wall and having an entrance opening in a first surface of the wall, an exit opening in a second surface of the wall opposite the first surface, and a tapered sidewall, wherein the one or more parameters of the at least one laser beam are adjusted to produce a desired diameter of the exit opening.