Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/319483
Type: Artigo de periódico
Title: Tool Vibration In Internal Turning Of Hardened Steel Using Cbn Tool
Abstract: The machining of hardened materials with hardness over 45 HRC has been an alternative to grinding since the 1970s, with the commercial availability of cubic boron nitride (cBN) and ceramic tools. However, the low toughness of these types of tool materials makes them very sensitive to damages caused by vibrations, which are critical for operations like internal turning, where the tool resembles a cantilever beam and therefore is susceptible to large deflections. This work aims to contribute to the study of tool performance in internal turning of long holes in hardened AISI 4340 steel in finishing conditions. Different machining conditions, two different tool holders (steel and carbide), and several tool overhangs were tested. The surface finish, acceleration (vibration) signals, and tool wear of cBN inserts were evaluated. The results show that vibration and the material of the tool holder may play a secondary role in the surface finish for stable turning, but the use of carbide tool holders makes the process stable for longer tool overhangs. Moreover, when the cutting becomes unstable, surface roughness is increased severely. © 2016 Springer-Verlag London
Editor: Springer-Verlag London Ltd
Citation: International Journal Of Advanced Manufacturing Technology. Springer-verlag London Ltd, p. 1 - 11, 2016.
Rights: fechado
Identifier DOI: 10.1007/s00170-016-8964-y
Address: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973130756&partnerID=40&md5=51b80b2439057463bf938bebcd99ddc6
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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