Drilling 170 Micron Diameter Holes

To achieve the required accuracy, precision and production rate we propose to apply our specialized experience in lasers and Electrical Discharge Machining(EDM)for drilling precise 170¿m diameter holes. The proposed technique combines the advantages ofeach of these technologies. Using a DPSS Laser to pre-drill the holes, rapidly removing 90% of the material, and EDM to finish the drilling process, ensures the desired hole geometry and internal surface quality, while having the goal of achieving anoperational rate of one BHP injector head every two hours. We will demostrate the drilling process to confirm the soundness of our approach and provide a number of holes in the specified metal stock. A combined process drilling machine will beconceptualized and described for BHP injector production. There is a strong need in the industry for rapid drilling of smalldiameter precision holes in a variety of materials, a problem that as yet has not been adequately solved. Examples of applications are automotive fuel injection systems, ink jet printers, near-field optical scanning microscopes, Laval nozzles for gasdynamic lasers and many others. We believe that our approach will provide a good solution.