High Speed Turning
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. AVALIAÇÃO DA EFICIÊNCIA OPERACIONAL NA OPERAÇÃO DE COLHEITA MECANIZADA EM LAVOURAS DE ARROZ IRRIGADO / EVALUATION OF OPERATING EFFICIENCIES IN HARVESTING RICE FIELDS
The objective of this thesis was evaluate the efficiencies of the harvesting operation in rice fields, located in the region of Depressão Central do Rio Grande do Sul. As specific objectives, this study sought to determine and evaluate the following efficiencies: field, time, field pattern and cutter bar; to verify if there is difference between the areas w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/03/2011
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2. PROJETO E CONTROLE ROBUSTO DE UM TRANSPORTADOR PESSOAL ROBÓTICO AUTO EQUILIBRANTE / DESIGN AND ROBUST CONTROL OF A SELF-BALANCING PERSONAL ROBOTIC TRANSPORTER VEHICLE
A Self Balancing Personal Transporter (SBPT) is a robotic platform with two wheels that functions from the balance of the individual who uses it, resembling the operation of classic inverted pendulum. In this thesis, a SBPT is designed, built and controlled. Among the features from the developed SBPT, it can be mentioned: relatively high speeds, agility, com
Publicado em: 2010
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3. Evaluation through the mgnetic inspection of the superficial condition of steel bearing rings DIN 100Cr6 after hard and dry turning. / Avaliação através da inspeção magnética da condição superficial de anéis de rolamento de aço DIN 100Cr6 após torneamento duro a seco.
The present work presents information for the manufacturing of ball bearings components with higher limits of resistance to fatigue, enabling a longer useful life and also the optimization of the production of the pieces, making the usual and final process of grinding unnecessary, which would result in a costs reduction. The motivations of this study are the
Publicado em: 2008
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4. Experimental inquiry on chip formation in the machining of ABNT 1045 steel and nodular casting iron / Investigação experimental da formação do cavaco na usinagem do aço ABNT 1045 e do ferro fundido nodular
The chip formation is influenced by several cut parameters which also affect the forces, tensions, powers and temperatures generated during the machining process. Although they have been studied for more than 100 years, still today, the involved mechanisms of deformation are not totally know, due to the fact that the chip formation involves high temperatures
Publicado em: 2008
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5. N. Machinability of low carbon free-machining leaded steel ABNT 12L14 with different levels of residual elements (chromium, nickel and cooper) / Usinabilidade do aço de corte-fácil baixo carbono ao chumbo ABNT 12L14 com diferentes níveis de elementos químicos residuais (cromo, níquel e cobre)
The purpose of this thesis was to study the machinability of low carbon free-machining leaded steel (ABNT/AISI 12L14) with different levels of residual (tramp) elements such as chromium, nickel and copper. Nine batches of steel were produced with controlled chemical composition, and with alterations in the mentioned residual levels so as to apply two levels
Publicado em: 2007
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6. Obtaining a fluorescent and resistant hybrid yeast to the nystatin / Obtenção de levedura híbrida fluorescente e resistente a nistatina
Vats contamination by wild yeasts can harm the efficiency and the productivity of ethanol industrial production and there are not efficient methods to control this type of contamination. Easiness, speed and the low cost would be desirable characteristics for the control of yeasts that eventually contaminate the fermentation process. With this aim, TAVARES (1
Publicado em: 2007
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7. Wear behavior of uncoated carbide inserts under dry, wet and cryogenic cooling conditions in turning C-60 steel
Environmental pollution, inconveniences and health hazards due to conventional application of cutting fluids essentially required for cooling and lubrication have been a great concern of the industries and the modern societies. Further they are also ineffective in controlling the high cutting temperature and rapid tool wear. One of the possible and potential
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-06
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8. The use of aerial videography in the detection of areas with nutricional deficiency in eucalyptus plantation. / Utilização da videografia aérea na detecção de áreas com deficiências nutricionais em plantios de eucalipto.
The aerial videography is a technique that has been used in the USA to evaluate, detect and prevent agricultural problems, as well as in the handling of natural areas. One of the reasons for the employment of this technique is its low cost for obtaining the images and the speed with that they can be captured, processed and analyzed. The aim of this work was
Publicado em: 2002
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9. Oxigenadores de fibra oca de polipropileno : efeito da sorção de polieteres perfluorados
Polypropylene microporous hollow fibers were introduced in the sixties in extracorporeal oxygenator apparatus, highly increasing the efficiency of these systems. However, life-time and assembly problems are still unresolved, resulting in high cost. In this work we tried to speed up the O2 permeation velocity, to reduce the quantity of fibers per oxygenator,
Publicado em: 1997