This application relates to the field of
machining technology, and discloses an ultrasonic
tool holder,
ultrasonic machining equipment, and
machine tool. The ultrasonic
tool holder includes: a tool body and a connecting sleeve. The tool body has a second end and a first end arranged opposite to each other in a front-rear direction. The first end is adapted to be connected and fitted with a spindle, and the second end has a mounting cavity for accommodating a
transducer. A
wireless receiving unit is provided on the outer periphery of the tool body. The connecting sleeve is connected to the second end and arranged coaxially with the tool body. An outer shell is fitted onto the outer periphery of the connecting sleeve through a bearing, wherein the inner
diameter of the bearing is less than or equal to the outer
diameter of the second end. Therefore, by placing the bearing between the connecting sleeve and the outer shell, the bearing does not occupy the outer periphery space of the tool body, which reduces the axial dimension of the tool body, thereby improving the rigidity of the tool body and reducing the overall axial dimension of the ultrasonic
tool holder. It also increases the structural dimensions of the
transducer and reduces the radial dimension of the bearing, thereby improving
ultrasonic machining performance.