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Novas
Tecnologias - NTF 10 |
| Title
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DIDACTIC PROTOTYPE OF A MACHINE TOOL BASED ON A PARALLEL KINEMATIC MECHANISM |
| Abstract
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In the past recent years
Parallel Kinematic Mechanisms (PKM) have attracted a lot of attention from
academic and industrial communities due to their potential applications not
only as robot manipulators but also as machine tools. Traditionally, these
systems are employed as flight simulators for pilot training or even people
entertaining. From the analysis of their typical topologies, it can be
observed that they are composed by two or more closed kinematic chain
mechanisms. In general, they demonstrate a higher performance than serial
kinematic mechanisms, once the last ones present deficiencies related to
structural stiffness, load capacity and positioning accuracy. On the other
hand, parallel kinematic mechanisms are much more rigid, accurate and have
higher load capacity and, therefore, can be lighter. Besides, when these
mechanisms are used as machine tools, they are able to produce workpieces
with very complex geometries, giving shapes and surfaces which would be
difficult to obtain from conventional or even NC machine tools. This article
deals with a type of parallel kinematic mechanism with four degrees of
mobility that allows positioning and orientation of the platform (table)
that supports a piece to be machined. This article also presents the
mechanism mathematical model, describes the prototype built, shows technical
specifications of its subsystems and comments its future applications.
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| Autores
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Batalha, Gilmar F.
Coelho, Tarcisio A. H.
Moraes, Daniel T. B.
Boczko, Marcelo
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| Trabalho
Completo : |
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1o.
Cobef | Comissão Organizadora |
Palestras | Sessões Técnicas |
Autor | Revisores |
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