Principles of Ultrasonic-assisted Machining
Through the ultrasonic digital generator, the ultrasonic tool holder produces 20kHz-50kHz (ultrasonic frequency) continuous high-intensity vibration impact, driving the tool (turning tool, milling cutter, touch head) to impact the workpiece. The local stress of the workpiece far exceeds the brittle fracture limit of the material, so that the material is partially broken and removed.
Ultrasonic-assisted machining-on the basis of the relative movement of the traditional cutting tool and the workpiece, ultrasonic vibration is applied to the tool or workpiece, and the mechanical and ultrasonic compound action of the tool on the workpiece material is an advanced processing method to obtain better processing performance .
The introduction of ultrasonic vibration changes the time-space relationship, contact state and action mechanism between the tool and the workpiece, thereby changing the processing mechanism.
The introduction of ultrasonic vibration can reduce the friction between the tool and the workpiece and reduce the contact time between the tool and the workpiece, thereby effectively increasing the material removal rate, reducing the cutting force, reducing the cutting heat, reducing tool wear, and improving machining accuracy and quality.