ultrasonic drill

ultrasonic drill

[¦əl·trə′sän·ik ′dril]
(mechanical engineering)
A drill in which a magnetostrictive transducer is attached to a tapered cone serving as a velocity transformer; with an appropriate tool at the end of the transformer, practically any shape of hole can be drilled in hard, brittle materials such as tungsten carbide and gems.
References in periodicals archive ?
The cutter makes holes by ultrasonic drill (optional accessory).
Ceramic materials and glasses can be cored with mechanical or ultrasonic drill.