Specificity of Cutting Tool Wear in Processing of Polymer Composite Materials

The article presents the characteristics of polymer composites processing, in particular, the wear process of the cutting tools. It is revealed that composite materials are difficult for machine cutting and require to apply a high-strength tool material and selection of optimal cutting mode. The important task is to reduce the cutting tool wear speed. To solve the problem, the experiment with a variation of the cutting mode was conducted, and the results showed that the tool wears faster at the high cutting speed and cutting depth. With the cutting speed increase, the intensity of the growth of the wear chamfer increases significantly, and therefore, when setting the cutting conditions, one should be guided by a rational combination of the operability of the cutting tool, the quality of the machined surface, and the processing capacity. These studies have also allowed to establish that the uneven wear process is uneven throughout the length of the cutting edge due to the layer structure of the composite.