laser precision drilling - blazingly fast with minimal wastage

As the name suggests, in the single-pulse process the laser creates a through-hole or blind hole with only a single laser pulse. The walls of the resulting hole are usually characterized by a conical geometry.

Since this process requires high pulse energy, it is primarily used when drilling a large number of holes in thin materials.

Typical products whose holes are drilled using this method are filter or vent elements.

The percussion process does not create a hole with a single laser pulse. Instead, several laser pulses hit one and the same position of the component in succession. The high pulse rate melts and vaporizes the material layer by layer.

The percussion process allows higher aspect ratios, i.e. very deep holes with very small diameters. In addition, the conicity can be defined very precisely and significantly harder materials can also be machined. However, the process is associated with longer processing times. Percussion drilling is used, for example, to drill nozzle holes.  

Trepanning drilling is actually a combination of drilling and cutting. Depending on the material and material thickness, a single drill hole is first created using the single pulse or percussion method. The target diameter is then achieved by laser cutting. Depending on the relative movement between the laser beam and the workpiece, a wide variety of drilling geometries are possible. Furthermore, trepanning drilling allows different conicities up to parallel drill walls.

Thanks to the process gas used, the melted material is blown out via the outlet side of the bore.