Ultrasonic Lapping of Conical Surfaces

This paper deals with the process of lapping of the conical surfaces which is carried out with longitudinal ultrasonic vibration. The influences of the ultrasonic vibration on the metal removal, on the friction force and on the roughness of the machined surfaces were studied. The main results are as follows: Application of the ultrasonic vibration in the lapping process of the conical surfaces gives the possibilities considerably to increase the metal removal. Besides, the effect of the influence of ultrasonic vibration on this parameter depends on the ratio between velocities of vibration and of rotation, with increasing of which the metal removal becomes more. The friction force can be reduced in comparison with the conventional lapping process and the effect of reduction also depends on the ratio between velocities of vibration and of rotation. There are optimum conditions where the application of ultrasonic vibration gives the possibilities to improve the roughness of machined surfaces comparing with conventional lapping process.