Investigation of Machined Surface Roughness and Cutting Tool Wear from Prepared Tool Geometry

Abstract

AbstractThe article deals with cutting edge preparation and its influence on the tool wear of cemented carbide cutting inserts and surface roughness of the workpiece. The effect of the cutting edge radius sizes on the tool life will be examined. The paper describes the influence of cutting edge preparation on the turning process, the surface roughness of the workpiece, and on the tool life. The cutting inserts were manufactured by Dormer Pramet and they also prepared them for the experiment. The preparation method used for cutting inserts was drag finishing. For the maintaining of the same conditions in each step, the cutting parameters did not change. These were determined based on numerous tests for a semi-finishing turning operation. The final cutting parameters, such as cutting speed, feed, and depth of cut were determined in consultation with the cutting inserts manufacturer to achieve a controlled development of tool wear with a tool life of 25 to 30 min. The material used for the workpiece was the Inconel 718 nickel alloy.KeywordsCutting edge preparationTurningTool wear