Influência do tratamento de gume por arraste sobre a vida da ferramenta e a qualidade superficial no fresamento do aço P20

Abstract

This work analyzed the influence of cutting edge preparation through the drag finishing method on tool wear and surface finish of the workpiece. Treatments of this nature are commonly applied aiming at high productivity and efficiency in the control of machining processes. With them, it's possible achieve tool life gains as well as process reliability. With these benefits, and using the know-how acquired in previous work, the work presented an inprovement proposal for an alternative abrasive media, material responsible for the generation of rounding on the edge and for the improvement of surface. The media was produced with a controlled grain size range for the peanut shell and, after some pre-testing, the endmills were treated. The tools were evaluated before and after the drag finishing process, and roughness and texture measurements were performed at the end of the tests. The obtained results were analyzed and compared with previous works. The tools had a machined length above what was found in tools dealing with the same abrasive media in its first version. The main advantage was the low and stable values for roughness (sic).