Machining Tools
Mostrando 13-24 de 69 artigos, teses e dissertações.
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13. Fresamento com ar quente: uma proposta para minimizar a formação de trincas térmicas em ferramentas de metal duro
This work presents the results, analyses and conclusions about a study carried out with objective of minimizing the thermal cracks formation on cemented carbide inserts during face milling. The main focus of investigation was based on the observation that milling process is an interrupted machining process, which imposes cyclic thermal loads to the cutting t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2011
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14. Estudo de ciclo de vida de uma planta de motores : Discussão sobre a tomada de decisão de um projeto de uma nova linha de manufatura / Engine plant lifecycle study : Discussions about decision making of a new manufacturing line design
Due to current competitiveness growing of the automotive market and the revision of pollutant emission standards by regulatory authorities, the product development scenario for automotive industry and industrial operations planning at large scale companies have undergone numerous revisions subsequently affecting one way or another every link in the supply ch
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/07/2011
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15. Estudo do desempenho de ferramenta de corte no processo de mandrilamento em ferro fundido vermicular - CGI / Performance of the cutting tools in the boring machining process vermicular cast iron - CGI
Existe hoje uma tendência no mercado de veículos de motor diesel a fabricarem os blocos dos motores em ferro fundido vermicular devido à melhor eficiência de combustão e maior resistência à compressão, permitindo paredes de galerias mais finas com conseqüência na redução do peso do bloco, quando comparado ao bloco usual feito de ferro fundido cin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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16. Estudo comparativo de diferentes geometrias de corte em broca de metal duro com canal reto em ferro fundido cinzento / Comparative study of different geometries cut with carbide drill straight flute in grey cast iron
O objetivo deste trabalho é comparar o desempenho de duas diferentes geometrias de brocas de metal duro sem cobertura, com canal reto e refrigeração interna, na furação de ferro fundido cinzento. As geometrias avaliadas nos experimentos foram a geometria de ponta normalizada (normal) e uma geometria desenvolvida chamada de geometria de ponta esférica.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/06/2011
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17. Desempenho de Ferramentas Reafiadas - Furação
The present work evaluated the performance of step drills, new and after regrinding. The way of regrinding the drills after they reached the end of tool life criterion was also varied. The following variables were also considered: type of coatings (uncoated, TiAlN e AlCrN) and the routine of re-coating them after regrinding (no recoating, recoating over the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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18. Estudo teórico da condução de calor e desenvolvimento de um sistema para a avaliação de fluidos de corte em usinagem / Theoretical study of heat conduction and development of a system for evaluation of cutting fluids in machining
Due to the rapid growth and development of machining processes there has been a demand for environmental sustainability and news cutting fluids have been applied. A reliable assessment of their efficiency in cooling the workpiece, tools and improving productivity is still a requirement. The present thesis presents a theoretical study and a proposal of a syst
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2011
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19. Manufatura flexível: comparativo entre o modelo otimizado e o tradicional. / Flexible manufacture: comparative degree between the optimized model and the traditional one.
This work aims to optimize the machining process by reducing setup time and adjusting the consumption of cutting tools in a flexible manufacturing scenario, adopting an optimized model, which is then confronted with the traditional model, to show the advantages of one over the another. The tests consisted in making the turning operation of thinning on a CNC
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2011
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20. Estudos do nível de utilização de sistemas de gerenciamento de ferramentas de corte em empresas de maquinas e implementos agrícolas. / Study of the level of use of Management System Cutting Tools in Enterprises of Machinery and Agricultural Implements
No atual cenário mundial o Agronegócio vem despontando como um mercado crescente principalmente para o Brasil. No intuito de acompanhar este crescimento as Empresas de Máquinas e Implementos Agrícolas (EMIA) estão aumentando a cada ano sua capacidade de produção metal-mecânica. À medida que as EMIA aumentam sua produção todos os insumos usados no
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2011
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21. Si3N4 ceramic cutting tool sintered with CeO2 and Al2O3 additives with AlCrN coating
Ceramic cutting tools are showing a growing market perspective in terms of application on machining operations due to their high hardness, wear resistance, and machining without a cutting fluid, therefore are good candidates for cast iron and Nickel superalloys machining. The objective of the present paper was the development of Si3N4 based ceramic cutting i
Materials Research. Publicado em: 01/11/2011
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22. An Investigation into the Use of Industrial Robots for Machining Soft and Low Density Materials with HSM Technique
The needs to comply with an increasingly competitive international market lead industries to some innovative solutions, such as the use of robotic arms as machine tools. Although these solutions present some well known drawbacks, there are some advantages and niches of application where success is possible. The present work investigates the use of such piece
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-09
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23. Análise dos deslocamentos térmicos de eixo-árvores de máquinas-ferramenta em altas rotações / ANALYSIS OF MECHANICAL AND THERMAL DISPLACEMENTS IN HIGH SPEED MACHINE TOOL SPINDLES
Machine tools play a key role in modern industrial production; therefore the technological development of machine tool industry has grown over the past decades. High Speed Machining (HSM) is widely used for machining complex and free form surfaces with high geometrical and dimensional accuracy. The spindle is one of the main items of a machine tool. Thus, it
Publicado em: 2011
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24. Tecnologia assistiva : personalização em massa através do design e fabricação de assentos customizados para cadeiras de rodas
The design of customized seats manufactured in polyurethane foams is and alternative to improve comfort and positioning for people with disabilities, as those people spend hours of the day seated in the same position. These support surfaces increase the contact area between the seat and user. This aspect improves weight distribution reducing localized pressu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011