When a workpiece is directly hammered, the workpiece will only cause damage to the surface, but in fact, the material is not removed. One method of material removal is to rely on shear stress and apply tangential stress. Usually, a tool head that uses grinding material and ultrasonic longitudinal vibration is used for ultrasonic testing. During use, the abrasive disperses the stress on the surface of the workpiece to all four sides. Their tangent composition is the main factor that affects the removal of workpiece material. In addition, the acoustic cavitation effect of the abrasive suspension also has a certain impact on the processing, which is the principle of ultrasonic processing.

For some hard and brittle solid materials (such as glass, ruby, diamond, ceramics, quartz, jade, silicon wafers, etc.), it is difficult to use mechanical processing methods. Ultrasonic can be used to process these materials. Holes of any shape. The ultrasonic transducer is welded to the magnetostrictive ultrasonic transducer, so that the ultrasonic energy is concentrated to the end of the processing tool, so that very little energy can be used to achieve the requirement of destroying the material.

There is a tool head on the top of the energy gathering device. The shape of the tool head is a model processed on the material. When working, a mixture of water and abrasive is added to the surface of the material (abrasives generally have harder emery, boron carbide, silicon carbide, etc.) , The ultrasonic vibration is carried out under the action of the ultrasonic generator, and the high-speed ultrasonic vibration of the tool head is pushed by the concentrator. The violent ultrasonic vibration applies tangential stress to the wetted abrasive (embroid), so that the abrasive transfers the stress on the surface of the workpiece to Disperse on all sides, resulting in cavitation. This phenomenon generates huge pressure and quickly destroys the surface of the material. In this case, the surface of the material will leave the desired shape.