Rotary Ultrasonic Assisted Machining of Ceramic Billet

Ceramic billet was milling by means of high speed rotation of diamond tool head and ultrasonic assisted axial vibration. Four important technological parameters in the processing process(whether there is ultrasonic machining, spindle speed, feed speed and ceramic billet with different primary firing temperature)were taken as experimental factors, while the axial cutting force was taken as evaluation index. The equal level orthogonal test scheme was adopted. The influence law of each machining parameter on the machining quality of ceramic billet was studied, in order to obtain the optimal combination of rotating ultrasonic machining parameters of ceramic billet. It is found that the feed speed and ultrasonic machining have the greatest influence on the axial cutting force, while the firing temperature of ceramic blank and spindle speed have only very weak influence on the axial cutting force. Under the rotating ultrasonic machining conditions of spindle speed of 1600 r·min^-1, feed speed of 40 mm·min^-1 and primary burning temperature of 600 ℃, the axial cutting force is minimum, the surface is finest and the machining effect is highest.