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Micromachining of medical devices can require fabrication of multiple features on multiple surfaces of a single component. To present the work piece to an ablating laser beam, the part must be rotated and translated several times with high precision. Even for small parts, this typically results in a cumbersome tooling design and a complicated motion system, adding to the mass needed to be moved.
The U.S. Patent Office granted Resonetics Patent No. 9,132,585, “Laser Machining System and Method for Machining Three-Dimensional Objects from a Plurality of Directions,” addressing the challenge of switching quickly from one location on the work piece to another by moving the laser beam instead of rotating the work piece. This beam movement can be enhanced by using small galvo-driven mirrors in the path of the beam.
This method replaces the costly scan lens with an inexpensive set of simple lenses. Tooling only needs to hold the part steady in one position, making it simpler, lighter and more economical.
The new patent builds on Resonetics’ 2014 patent addressing Precision Laser Ablation.
Source: Resonetics
