Optimisation of a Dual Cylindrical Cam Mechanism for Energy Storage and Torque Efficiency

Authors

  • Matteo Monfrini Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, Brescia, 25123, BS, Italy
  • Roberto Pagani Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, Brescia, 25123, BS, Italy
  • Alberto Borboni Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, Brescia, 25123, BS, Italy

DOI:

https://doi.org/10.31181/rme530

Keywords:

Cam, Cylindrical Cams, Energy Storage, Optimisation, Dual Cam with a Shared Follower

Abstract

This paper presents a novel concentric dual-cylindrical cam mechanism designed to store energy in a spring and deliver a specified torque at precise angular positions. Two coaxial cylindrical cams act on a single spring-loaded follower, enabling energy absorption during one phase of motion and release during another. A kinetostatic theoretical model is developed to describe the system behaviour, providing equations for internal forces and output torque in both compression and release phases. By analysing a dimensionless efficiency metric (released-to-input torque) and exploring the design space, an optimal cam inclination for both cams is identified that maximises torque efficiency. Under the model assumptions, this optimum is independent of friction coefficient and external load. An experimental program on prototype cam pairs validates the model: measured torque–angle characteristics agree strongly with predictions for both tested designs. The findings demonstrate improved torque delivery and broad applicability to compact energy-storage systems that require controlled torque profiles and high energy efficiency, including robotic actuators, prosthetic limbs, and automotive mechanisms.

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Published

2026-03-31

Issue

Vol. 7 No. 1 (2026): Reports in Mechanical Engineering

Section

Articles

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Copyright (c) 2026 Reports in Mechanical Engineering

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How to Cite

Optimisation of a Dual Cylindrical Cam Mechanism for Energy Storage and Torque Efficiency. (2026). Reports in Mechanical Engineering, 7(1), 105-117. https://doi.org/10.31181/rme530