Investigation on Surface Finishing of Components Ground with Lapping Kinematics: Lapgrinding Process
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Data
2011-01-01
Autores
Fiocchi, Arthur Alves [UNESP]
de Angelo Sanchez, Luiz Eduardo [UNESP]
Gomes de Oliveira, Joao Fernando
Marinescu, Ioan
Título da Revista
ISSN da Revista
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Editor
Trans Tech Publications Ltd
Resumo
Over the last three decades, researchers have responded to the demands of industry to manufacture mechanical components with geometrical tolerance, dimensional tolerance, and surface finishing in nanometer levels. The new lapgrinding process developed in Brazil utilizes lapping kinematics and a flat grinding wheel dressed with a single-point diamond dresser in agreement with overlap factor (U(d)) theory. In the present work, the influences of different U(d) values on dressing (U(d) = 1, 3 e 5) and grain size of the grinding wheel made of silicon carbide (SiC = 800, 600 e 300 mesh) are analyzed on surface finishing of stainless steel AISI 420 flat workpieces submitted to the lapgrinding process. The best results, obtained after 10 minutes of machining, were: average surface roughness (Ra) 1.92 nm; 1.19 mu m flatness deviation of 25.4 mm diameter workpieces and mirrored surface finishing. Given the surface quality achieved, the lapgrinding process can be included among the ultra-precision finishing processes and, depending on the application, the steps of lapping followed by polishing can be replaced by the proposed abrasive process.
Descrição
Palavras-chave
Lapgrinding, Ultra Precision, Surface Finishing, Nanotechnology
Como citar
Modelling of Machining Operations. Stafa-zurich: Trans Tech Publications Ltd, v. 223, p. 879-887, 2011.