Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Design, analysis and manufacturing of a special cutting tool for titanium milling
Submission Author:
Edson Bruno Lara Rosa , SP
Co-Authors:
Edson Bruno Lara Rosa, Carlos Eiji Hirata Ventura, Armando Ítalo Sette Antonialli
Presenter: Edson Bruno Lara Rosa
doi://10.26678/ABCM.COBEM2021.COB2021-1171
Abstract
Titanium machining presents lots of difficulties because of the outstanding properties of these alloys. Besides the wear mechanisms that severely impair tool life, it is also common to face problems for obtaining a good surface finishing. In terms of machining parameters, feed rate is strongly related to surface roughness; in terms of tool geometry, nose radius does the same role. This work presents a study on design, analysis and manufacturing of special cutting tools for titanium milling, whose only variable was the nose radius, tested on three levels: 0.8 mm, 1.2 mm and 1.6 mm. The insert carbides were ground on a 4-axis grinding machine and characterized by a 3D image analysing system. Results showed that it was possible to manufacture inserts keeping a small error between actual nose radius and the nominal ones. Also surface roughness measurements on the clearance face of the cutting tools provided a good repeatability, as confirmed by the analysis of variance. Anyway, it seems that grinding lower nose radii may hinder the control of both dimensional and surface finishing, because of the error tendency that was observed here.
Keywords
machining, Grinding, Carbide, Nose radius, surface roughness
