A New RP1PR Type Coupling for Shafts with Crossed Axes

Stelian Alaci (), Ioan Doroftei, Florina-Carmen Ciornei, Ionut-Cristian Romanu, Ioan-Alexandru Doroftei and Mariana-Catalina Ciornei ()
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Stelian Alaci: Mechanics and Technologies Department, “Stefan cel Mare” University of Suceava, 720229 Suceava, Romania
Ioan Doroftei: Mechanical Engineering, Mechatronics and Robotics Department, “Gheorghe Asachi” Technical University, 700050 Iasi, Romania
Florina-Carmen Ciornei: Mechanics and Technologies Department, “Stefan cel Mare” University of Suceava, 720229 Suceava, Romania
Ionut-Cristian Romanu: Mechanics and Technologies Department, “Stefan cel Mare” University of Suceava, 720229 Suceava, Romania
Ioan-Alexandru Doroftei: Mechanical Engineering, Mechatronics and Robotics Department, “Gheorghe Asachi” Technical University, 700050 Iasi, Romania
Mariana-Catalina Ciornei: Physiology Department, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania

Mathematics, 2023, vol. 11, issue 9, 1-21

Abstract: There are few examples of mechanical coupling solutions for the transmission of high torques between two rotating shafts that have non-coplanar, non-parallel axes. Based on the structural analysis, the paper proposes a solution for an RP1PR-type symmetrical coupling. The Hartenberg–Denavit methodology is not applicable for performing the kinematical analysis, hence the solution starts from the geometrical condition of the creation of planar pairs of the mechanism, expressed in vector form. The absolute motion of all elements of the mechanism’s structure can be expressed after developing the kinematical analysis. The theoretical results are validated via numerical analysis. By comparing the analytical results with the CATIA-modeled results, excellent compatibility is obtained. We also propose a constructive solution for the newly designed coupling mechanism.

Keywords: spatial coupling; crossed axes; kinematic analysis; constructive solutions; numerical validation (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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