At a glance:
Better surface finish
50 % reduced axial forces compared with conventional countersinks
Less vibration at the tool
Time savings thanks to higher cutting speeds
No settling with bolted and riveted joints
Countersinks are standard products. They are produced in large quantities and are used in practically every machining process, because as the saying goes: No bore without a countersink. The design of countersinks, however, has barely changed over the past decades, if at all. Equipped with three blades, the tools have an equal pitch between the cutting edges. Large axial forces cause vibrations of the tool and result in a poor surface finish. Furthermore, the tools do not achieve long tool lives.