Ultrasonic cutter and ultrasonic cutter cooling and chip diversion system

An ultrasonic cutter, mounted to a spindle of a machine tool, comprising:

• a tool holder, furnished with a circular air-out aisle at a lower portion thereof, the circular air-out aisle being formed by an inner ring and an outer ring sleeving the inner ring, the inner ring having a first surface and a second surface opposite to the first surface, the outer ring having a third surface and a fourth surface opposite to the third surface, the first surface being spaced from the third surface by a gap, the gap having an upper air inlet and a lower air outlet, the second surface having an inner inclined surface at a lower portion thereof, a first angle being formed between the inner inclined surface and the first surface, the fourth surface having an outer inclined surface, a second angle being formed between the outer inclined surface and the third surface;
• and
• an ultrasonic oscillator, disposed in a chamber of the tool holder, used for providing ultrasonic oscillation to a cutter, the chamber and the gap being spatially connected.