Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
VIBRATIONS ANALYSIS IN THE BALL-END MILLING PROCESS
Submission Author:
Fábio Fernandes da Silva , Procurando endereço...
Co-Authors:
Fábio Fernandes da Silva, Milton Polli, Marcio Avelar
Presenter: Fábio Fernandes da Silva
doi://10.26678/ABCM.COBEM2017.COB17-0742
Abstract
Molds and dies are employed to impart a desired shape to an product to manufactured. In finishing milling the tool geometry and cutting parameters are chosen in such way to attempt the project requirements related to surface finish and dimensional precision. Ball-end mills are recommended for finishing of tapered and free form surfaces. This process is characterized by high interruptions during the cut. The time the tool spend cutting is just a fraction of one tool rotation period. The phenomena related to the process dynamic are different from those found in roughing operations. This paper presents the analysis of the vibrations in ball-end milling of a tapered surface considering different cutting paths. The evaluation of the stability is based on the surface roughness and audio signals captured by a microphone. The horizontal downward down milling strategies presented better results. In all vertical cuts, there was a strong influence of the amplitude of the tooth passing frequency. It was verified proportionality between this amplitude and the surface roughness values.
Keywords
Ball-end milling, Vibration, tool path, cutting strategy
