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Open AccessArticle

Design, Analysis and Testing of a New Compliant Compound Constant-Force Mechanism

Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Avenida da Universidade, Taipa, Macau, China
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Actuators 2018, 7(4), 65; https://doi.org/10.3390/act7040065
Received: 31 August 2018 / Revised: 21 September 2018 / Accepted: 26 September 2018 / Published: 27 September 2018
(This article belongs to the Special Issue Design and Control of Compliant Manipulators)
This paper presents the design and testing of a novel flexure-based compliant compound constant-force mechanism (CCFM). One uniqueness of the proposed mechanism lies in that it achieves both constant-force input and constant-force output, which is enabled by integrating two types of sub-mechanisms termed active and passive constant-force structures, respectively. Unlike conventional structures, the active constant-force structure allows the reduction on input force requirement and thus the enlargement of motion stroke provided that the maximum stress of the material is within allowable value. While the passive one offers a safe environmental interaction during the contact process. Analytical model of the proposed CCFM is derived which is verified by simulation study with finite element analysis (FEA). A prototype mechanism is fabricated by a 3D printer to demonstrate the performance of the proposed CCFM design. Experimental results reveal the effectiveness of the reported CCFM. View Full-Text
Keywords: flexure mechanism; compliant mechanism; constant-force mechanism; mechanism design flexure mechanism; compliant mechanism; constant-force mechanism; mechanism design
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MDPI and ACS Style

Zhang, X.; Wang, G.; Xu, Q. Design, Analysis and Testing of a New Compliant Compound Constant-Force Mechanism. Actuators 2018, 7, 65.

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