An improved normal sawing force model with spherical abrasive particles for ultrasonic assisted inner diameter sawing

Abstract

Abstract Ultrasonic assisted inner diameter machining is a common slicing method for hard and brittle materials, and the sawing force is the main factor affecting the quality of workpiece surface and tool life, so to explore the sawing force is to research the sawing process. An improved model of normal sawing force is proposed in this paper with spherical abrasive particles. A series of sawing experiments were carried out with alumina ceramics (99%) as typical hard and brittle materials to verify the correctness of the theoretical model and discuss the influence of machining parameters on the normal sawing force. In the experiment, the results show that the average error and the variance of the improved normal sawing force model are decreased obviously compared with the average error and the variance of the regular tetrahedral abrasive normal sawing force model. So, the model proposed in this paper is more accurate. The establishment of this model has guiding significance for the selection of process parameters, the improvement of processing efficiency and quality in subsequent actual production and processing.