Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Grinding customized carbides for thread turning of titanium alloys
Submission Author:
Felipe Dias Monteiro , MG , Brazil
Co-Authors:
Felipe Dias Monteiro, Carlos Eiji Hirata Ventura, Armando Ítalo Sette Antonialli, Edson Bruno Lara Rosa
Presenter: Felipe Dias Monteiro
doi://10.26678/ABCM.COBEM2021.COB2021-1692
Abstract
Several titanium alloys have been used for machining orthopedic and orthodontic devices, like bone screws, because of their interesting behavior in terms of corrosion resistance and biological response. Of course, this behavior is strongly affected by the surface integrity of the manufactured components. The present study aims to manufacture and evaluate customized carbide inserts for thread turning titanium alloys. Clearance angle and chamfering were chosen as input variables regarding the tool geometry. Results showed that grinding cemented carbides with a bigger clearance angle provided lower surface roughness, with a strongly symmetric profile in terms of widths of valleys and peaks and also considerably good repeatability. In terms of cutting edge irregularities, grinding a chamfer may help to reduce them, especially for a bigger clearance angle. These conditions may improve both tool life and the machined surface integrity for titanium screws.
Keywords
machining, Tool geometry, cutting edge, Clearance angle, Chamfer
