Abstract
This paper presents a method to improve the performance of glass fiber processing by cutting of the fiber reinforced polymeric materials based on the application of ultrasonic vibrations on the cutting tool. General conditions of the process are established and, based on the analysis of the processing mechanism, the authors provided the fundamental condition for the selection of the cutting speed values in the case of ultrasonically assisted cutting of glass fiber reinforced polymeric materials. The paper also presents the theoretical foundations of rising the macrogeometric accuracy of ultrasonically assisted cutting in the case example of the universal grip turning. Keywords: polymeric materials, ultrasonic cutting, glass fiber