Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
VIBRATION ANALYSIS OF FINISHING BALL-END MILLING INCLINED SURFACE OF HARDENED STEEL
Submission Author:
Fábio Fernandes da Silva , Procurando endereço...
Co-Authors:
Fábio Fernandes da Silva, Milton Polli, Marcio Avelar
Presenter: Milton Polli
doi://10.26678/ABCM.COBEM2019.COB2019-1288
Abstract
Molds and dies are commonly employed in the industry in order to obtain a wide variety of products. The materials used are difficult to machine due to the characteristics they present to resist to the environment they are exposed. Ball-end mill is widely used in the process of milling complex surfaces of molds and dies. There are variations in the contact of the cutting edge and the machining surface during the tool paths. This paper presents an analysis of the dynamic stability of the ball-end milling process of inclined surfaces of 45o. A ball-end milling, diameter of 12 mm was used to finish an inclined surface of AISI D6 hardened steel. A horizontal downward down milling tool path orientation was employed with depth of cut of 0.3 mm at different cutting speeds. The evaluation of the stability of the process was performed analyzing the surface texture parameters, with the aid of a 3D surface roughness tester, and vibration signals captured by microphone and accelerometer. The results showed that the condition, which the tooth-passing frequency reaches one third of the prevailing vibration mode of the system is detrimental to the quality of the machined surface due to high amplitude forced vibrations.
Keywords
Vibration Analysis, inclined surface, Ball-end milling
