Journal
JOURNAL OF MANUFACTURING PROCESSES
Volume 49, Issue -, Pages 126-134Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jmapro.2019.11.025
Keywords
Hard turning; Finite element modelling; Edge preparation; Discretized edge rounding
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Funding
- CAPES (Brazilian Federal Agency for the Support and Evaluation of Graduate Education) [BEX4202/10-4]
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The application of customized edge geometries in hard turning prepared by the discretization of edge rounding in several chamfers is expected to contribute to the increase of tool life and induction of compressive residual stresses, confirmed by experimental observations. Additionally, this paper presents numerical simulations of hard turning using finite element analysis in order to provide a better understanding of the mechanical and thermal loads involved in cuffing, considering the variation of the number of chamfers used to discretize the edge. It is demonstrated that the higher number of chamfers, the higher the mechanical load on the edge, although the thermal load is not affected (as a result of the increase in contact area, which contributes to a better distribution of the thermal energy). Thus, in the investigated process, mechanical load is the main responsible phenomenon for alterations in tool life.
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