Laser drilling is becoming more and more popular. It's an excellent alternative to mechanical punching, drilling, broaching and wire EDM. It's ideal for drilling small holes with a large depth-to-diameter ratio. Laser drilling also creates a precise hole that can be reproduced exactly elsewhere. This technology is ideal for all types of manufacturing and production industries.
There are two methods of laser drilling. The first is called percussion drilling. It is done by repeatedly pulsing focused laser energy at the material surface, which vaporizes layer by layer until the desired hole is drilled. For different cylindrical parts, such as aerospace combustor liners, a method known as DOF "drilling on the fly" is adopted and percussion holes are drilled while the part is moving.
The part's speed and rotational position are synchronized with the laser's pulse, and a partial hole is drilled after each rotational pass. The method is continued till you get the desired hole. The standard hole for laser percussion drilling varies from 0.005" and 0.035".
If larger holes are needed, consider trepanned Laser Drilling. This method removes a circular disc or cylindrical core from substrate. Unlike the percussion laser drilling, the position of substrate or the beam is moved in combination with the predetermined size of hole.
Laser drilling offers consistency to industries that have precise manufacturing specifications and need tight tolerance for high depth-to-diameter ratios. This process also offers dynamic, "on-the-fly" changes to edge quality, hole diameter and hole depth.