Surface quality and cylindricity of ultrasonic elliptical vibration–assisted centerless grinding of micro-rod YAG single crystals

Micro-rod YAG single crystals are the preferred laser for gain mediums with a high power. However, brittle fracture and crack damages easy to occur in grinding process of micro-rod due their large length-to-diameter ratio, brittleness, hardness. In this work, modal, frequency, harmonic response transducer under ultrasonic elliptical vibration analyzed by using finite element simulation. Then, mechanical structure system was designed optimized based on theory To verify reliability transducer, experiments were carried out measure resonance amplitude, impedance characteristics transducer. The synthesis different phase differences voltages performed rationality structural design system. An experimental platform vibration–assisted centerless (UEVCG) developed, UEVCG tests performed. influences voltage, difference, pallet inclined angle surface roughness, peak-to-valley value, cylindricity systematically analyzed. parameters range analysis results orthogonal test. indicated that effectively improved quality compared traditional grinding. This work will not only enhance understanding principle, but also provide technical support precision high-efficiency machining materials.