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COBEM 2021
26th International Congress of Mechanical Engineering
Development of a passive damper for milling tools based on smart materials
Submission Author:
João Henrique Schiavon Mota , SP , Brazil
Co-Authors:
João Henrique Schiavon Mota, João Vitor de Carvalho Fontes, Sidney Bruce Shiki, Armando Ítalo Sette Antonialli
Presenter: João Henrique Schiavon Mota
doi://10.26678/ABCM.COBEM2021.COB2021-0447
Abstract
Poor quality of machined surfaces is mainly caused by chatter vibration. This kind of vibration is usuallynominated as self-excited because forces related to the machining process end up promoting vibrations on the naturalfrequencies of the milling system (or on some of their harmonics). So, it is typically different from natural or forcedvibrations. In order to avoid this effect, this project intends to develop a dynamic model regarding a tool holder formilling based on shape memory alloys (SMA) to act as a passive vibration damper. To predict the effectiveness of thisidea, a numerical simulation was developed in order to do a comparison between models regarding a tool holder filledwith SMA and a hollow tool holder. Results show significant difference on the behavior of these models when it comesto high spindle rotations. So, it is expected that a SMA-based tool holder may be useful on vibration damping for highercutting speeds.
Keywords
machining, chatter vibration, Shape Memory Alloys, modeling
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