Abstract
The theorem that any subset of translations is normal or invariant by conjugation in the group of a spatial 3-DoF translation is applied to the synthesis of a novel type of parallel manipulators, which generate 2-DoF translation along a ruled helicoid. A parallel manipulator generating 2-DoF translation along a revolute hyperboloid of one sheet is a special case. The revolute onesheet hyperboloid is a doubly ruled surface. The double geometric generation of that hyperboloid by the rotation of a straight line is further exploited and leads to more architectural types of parallel manipulators, which produce 2-DoF translation of the end-effector.
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Lee, CC., Hervé, J.M. (2010). Mechanical Generators of 2-DoF Translation along a Ruled Surface. In: Lenarcic, J., Stanisic, M. (eds) Advances in Robot Kinematics: Motion in Man and Machine. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-9262-5_8
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DOI: https://doi.org/10.1007/978-90-481-9262-5_8
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