Abstract
Starting from geometry, the equivalent mechanisms that trace ellipses, hyperbolas, or parabolas are built. These mechanisms are studied structurally, and their kinematic analysis is developed, resulting in relations, successive positions, diagrams, tables, and curves traced. Curves are traced either as trajectories of points or by enveloping. On the basis of projective geometry problems, a new mechanism that traces parabolas by enveloping is presented. Starting from an analytical geometry problem, synthesis of a new equivalent mechanism, which traces parabolas by enveloping, is also created. Next, we study a new mechanism, created on a locus problem, reaching the hyperbolas obtained by enveloping. Another problem in geometry allows the synthesis of the mechanism that traces a hyperbola as a trajectory of a point. A locus problem in 1896 allowed the synthesis of a new mechanism that traces ellipses, parabolas, and hyperbolas.
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Popescu, I., Luca, L., Cherciu, M., Marghitu, D.B. (2020). Mechanisms for Generating Conical Curves. In: Mechanisms for Generating Mathematical Curves. Springer Tracts in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-42168-7_4
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DOI: https://doi.org/10.1007/978-3-030-42168-7_4
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