Análise do desgaste de insertos de metal-duro na usinagem de ferro fundido nodular

Abstract

This Mechanical Engineering course conclusion work approached the tool wear on cutting tools used in nodular cast iron brackets milling. As a way of measuring, the tool wear of the cutting tools was evaluated, based on the number of machined parts. The machining tests were carried out on a horizontal machining center, evaluating three different cutting tools. The machining process kept the same cutting parameters and always using lubrication fluid, in order to have a comparison between the different tools. The tool wear was evaluated using a stereo trinocular microscope, and it was possible to observe that the tool wear mechanism of flank surface abrasion was predominant. In order to increase the amount of produced parts for each cutting edge, and to know the tool wear mechanisms, this study presents a literature review and contributions from other works for the subject. After the end of the tests, it was identified that the SNMU tool increase the average number of machined parts per cutting edge twice as high as the initial process, a cost reduction approximately ten times smaller than the inicial process, and even less flank wear. [resumo fornecido pelo autor]