CHIP BEHAVIOR ON ORTOGONAL MACHINING WITH APPLICATION OF HIGH PRESSURE CUTTING FLUID JET BY FINITE ELEMENTS METHOD

Leonardo Araújo Bezerra¹; Prof. Dr. Luiz Eduardo de Ângelo Sanchez¹

¹ Universidade Estadual Paulista Júlio de Mesquita Filho - campus Bauru (UNESP)

doi:10.20906/CPS/COB-2015-1156

Resumo

As machining operations we understand the ones those give shape to a piece of work or grant dimensions or else a combination of these features and as a result, produce chip. Chip can be defined as a portion of the material, removed by the tool, and it is characterized for having an irregular geometric form. Many improvements have been made in recent decades relative to cutting tools and machining strategies, granting better performances and greater life to the tools. In processing materials considered as hard to cut like Titanium or Nickel alloys an acceptable performance has not been reached yet. One of the processes of improvement in machining that deserves attention is the Machining with High Pressure Jet Assistance(HPJA) which will be studied in this work. Until now, many experimental works were done to understand the phenomena caused by the jet, phenomena like increase of tool life and reduction of efforts. The problem is how to know the better machining conditions to use on each kind of material, what pressure of jet is the better one and what more we can expect from the jet assistance. The experimental work have limitations and consume a lot of time to research many materials. So in this work a dynamic analysis of the machining process with Jet Assistance will be made through a finite elements method(FEM) simulation to detect changes on mechanic and thermal parameters caused by changing the positon of the jet. All the Jets will be aplied on chip-tool interface, the nozzle position and the impact position will vary.

Palavras-chave: Chip; High Pressure Jet Assistance (HPJA); Finite Elements Method(FEM)