Cutting Edge Geometry
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Efeito da mesogeometria da broca e das condições de lubrirrefrigeração sobre o acabamento do furo em aço ARBL DIN S700MC
RESUMO O trabalho apresenta um estudo sobre os efeitos decorrentes da modificação da mesogeometria de uma broca helicoidal de metal-duro com revestimento de TiAlN sobre o acabamento superficial do aço de alta resistência e baixa liga DIN S700MC utilizando diferentes condições de aplicação de fluidos lubrirrefrigerantes (em abundância, em mínima qua
Matéria (Rio J.). Publicado em: 20/05/2019
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2. The Influence of Twist Drill Main Cutting Edge Preparation in Drilling Process
In order to improve the performance of a twist drill, one must understand some aspects involved in drilling process that are not commonly addressed, such as the micro geometry employed in the tool’s tip sharpening and the protection of the main cutting edge. The edge of the twist drill can be protected by rounding, chamfering or the combination of both. Th
Mat. Res.. Publicado em: 17/11/2015
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3. 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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4. Performance evaluation of carbide tools on automotive valve guides reaming / Avaliação do desempenho de ferramentas de metal duro no alargamento de guias de válvulas automotivas
Reaming is a machining process with relatively low cost and suitable when high quality holes are required. The purpose of this work is to evaluate the quality of the holes made in automotive valve guides, fabricated with sintered steel. This study was based on parameters of surface roughness, roundness and cylindricity deviations, obtained with uncoated carb
Publicado em: 2009
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5. Uma contribuição a melhoria do processo de fresamento de ferro fundido vermicular - CGI / A contribution to the improvement of the milling process machining compacted graphite iron - CGI
Since the beginning of this century, researches about the development of diesel engines have been intensified, aiming to increase its energy efficiency and to reduce the levels of emission of pollutants. One the way to increase this efficiency is to increase the peaks of pressure of fuel explosion in the combustion chamber. The grey casting iron material is
Publicado em: 2009
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6. Influence of the tool edge geometry on specific cutting energy at high-speed cutting
This paper presents specific cutting energy measurements as a function of the cutting speed and tool cutting edge geometry. The experimental work was carried out on a vertical CNC machining center with 7,500 rpm spindle rotation and 7.5 kW power. Hardened steels ASTM H13 (50 HRC) were machined at conventional cutting speed and high-speed cutting (HSC). TiN c
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-09
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7. Effect of cutting speed and cutting fluid on the BUE geometry of a SAE 12L14 free machining steel
A well known phenomenon, the "built-up edge - BUE", occurs at the chip/tool interface when multiphase materials are machined at low cutting speeds. Under high compressive stresses, seizure prevents the material from sliding over the tool’s rake face. Although many reports have been published on the subject, studies of the BUE phenomenon have been marked by
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-06
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8. Estudo sobre a furação de compósito de resina epóxi reforçado com fibras de vidro
The technological development has allowed the manufacture of sophisticated goods, leading to the pursuit of materials able to satisfactorily fulfill these requirements. Materials such as traditional metals, polymers and ceramics are still widely employed; however, they have been increasingly replaced by composite materials, which must be processed to the fin
Publicado em: 2007
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9. Influence of the machining parameters on the broaching of a casting iron block / Influência dos parâmetros de usinagem no brochamento de um bloco em ferro fundido
The objective of the present paperwork is to analyze the influence of some machining parameters on the geometrical and surface qualities of the work piece. The broaching is an old machining operation, which was developed with the automobile industry, but which nowadays can be found in diverse industrial segments. The process consists on a progressive removal
Publicado em: 2007
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10. Estudo da geometria de arestas de corte aplicadas em usinagem com altas velocidades de corte / Study of cutting edge geometry applied in high speed machining
This thesis presents an experimental study about the specific cutting energy and its relation with cutting parameters, geometrical and tribological characteristics of tools, and workpiece material. Depth of cut, cutting speed, tool nose radius, chip-breaker geometry, tool coating, hardness, microstructure and chemical composition of the workpiece material ar
Publicado em: 2005
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11. Force prediction in thread milling
A mechanistic approach for modeling the thread milling process is presented. The mechanics of cutting for thread milling is analyzed as an end milling process with modified cutting edge. The geometry of threads is added to the geometry of the end milling tool to calculate the chip load area. The linear path is simulated and values of the specific energy from
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-03
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12. Influência do ângulo de posição secundário da ferramenta, raio de ponta e lubrificação na usinagem em presença de aresta postiça de corte / Influence of tool end cutting edge angle, Tool nose radius and lubrication in machining under built-up edge conditions
This work investigates the influence of tool end cutting edge angle and tool nose radius on surface finish of AISI 1045 steel machined under built-up edge conditions. Surface roughness was evaluated measuring the Ra parameter and analysis of the geometry of the machined surface was carried out in the scanning electron microscope. To assist this work, the thr
Publicado em: 2000