UNION TOOL recommend drill models based on actual drilling data depending on customer's conditions, to correspond to a great variety of PCB material characteristics and drilling parameters. For example, even the drills of same size, is classified into following 3 types according to the drill design, where drill selection enables to respond to customer's quality target.
The drill is especially designed considering the rigidity. It enables to maintain an excellent hole registration accuracy in the drilling process.
The drill is designed especially considering the chip evacuation. Enables to maintain a good hole wall quality while drilling.
The drill is designed considering the rigidity and the chip evacuation. It offers a good balance with hole registration and inner hole wall quality during the drilling process.
Furthermore, together with geometry and material development, and applying ULF coating which is developed and optimized for PCB drilling, enables to drill holes in PCBs that were difficult to drill with conventional drills.