Reamers cutting edge preparation for improvement the GGG 40 machining

¹ Technical University of Cluj-Napoca, Faculty of Machine Building, Department of Manufacturing Engineering, Bulevardul Muncii 103-105, Cluj-Napoca, Romania
² Gühring KG, Herderstraße 50-54, Albstadt, Germany

^* Corresponding author: voina_ionut@yahoo.com;

Abstract

The improvement of the microgeometry became a subject of a great interest in cutting tools optimization. This paper approaches the process of cutting edge preparation of solid carbide reamers. It has been analyzed the evolution of cutting edge wear resistance in the material GGG 40 using the scanning electron microscope (SEM). The work also compared the rounded cutting edge reamers realized using wet abrasive jet machining with standard unprepared cutting edge. To obtain different microgeometries were experienced a number of machining strategies, which resulted in four combinations of roundness and forms for the cutting edge. In order to validate the results, the author studied the wear resistance during the reaming tests, the influence of prepared surface of the cutting edge on metallic coating layer adhesion. The final purpose was to determinate the optimal strategy of cutting edge preparation considering the evolution of wear during the reaming process.