1. Moldagem por injeção de microcomponentes ópticos poliméricos gerados em insertos usinados por torneamento de ultraprecisão / Injection molding of polymer micro-optical components generated in inserts by ultra-precision turning

Este trabalho analisou o processo de moldagem por injeção de micro elementos ópticos difrativos usinados em insertos de cobre eletrolítico com ferramenta de diamante com ponta única. Quatro tipos de microestruturas características foram selecionados neste estudo, a saber: lente anesférica, lente de Fresnel, grade de difração (blaze grating) e sensor

Publicado em: 2010

2. Single point diamond turning of the tungsten carbide / Usinabilidade do carbeto de tungstênio no torneamento com ferramenta de diamante

The single point diamond turning of the Tungsten Carbide is presented. The motivation for this study is the material´s high hardness and potential application for micromolds. A Tungsten Carbide sample was subjected to tests for determination of cutting parameters to achieve the ductile regime of material removal. Based on experimental results it was conclud

Publicado em: 2009

3. In-situ raman spectroscopy analysis of re-crystallization annealing of diamond turned silicon crystal

Mechanical material removal during ultraprecision machining of semiconductors crystals normally induces surface damage. In this article, Raman micro-spectroscopy has been used to probe structural alteration as well as residual stresses in the machined surface generated by single point diamond turning. The damage found is characterized by an amorphous phase i

Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-03

4. Micromachinability study of Ti (CP) and Ti-6Al-4V alloy by means of single point diamond turning / Estudo da microusinabilidade do Ti (CP) e da liga Ti-6Al-4V no torneamento com ferramenta de diamante

Among the various applications where titanium and its alloys are employed, the aeronautic industry is one of the most important, because of their excellent properties such as fracture strength, corrosion resistance and high strength to weight ratio, which is maintained at high temperatures. However, the machinability of titanium and its alloys is generally c

Publicado em: 2005