An adjustable gravity-balancing mechanism using planar extension and compression springs

Zong Wei Yang, Chao Chieh Lan

研究成果: Article同行評審

23 引文 斯高帕斯(Scopus)


Passively compensating a payload weight requires a mechanism that can generate a nonlinear torque curve. Existing gravity-balancing mechanisms (GBMs) rely on linear or torsional springs with various principles to generate the required torque profile. This paper presents the design of a novel GBM whose balancing capability can be adjusted. The idea is to employ two linear springs, one extension spring and one compression spring, to synthesize the required nonlinear torque curve. The springs are concentrated on the base joint to reduce the overall size. An optimization formulation is given to maximize the weight compensation capability. The effects of various parameters on the achievable weight are discussed. Low-volume planar springs are specifically designed to serve as the linear springs so that large stiffness can be generated in a limited space. By preloading the springs, the GBM can easily adjust its torque curve to match different payloads. An illustrative prototype is given with experiment verifications to demonstrate the claimed merits of the proposed GBM.

頁(從 - 到)314-329
期刊Mechanism and Machine Theory
出版狀態Published - 2015 六月 22

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications

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