Spatial compliant constant-force mechanism

Parlaktaş, Volkan

doi:10.1016/j.mechmachtheory.2013.04.007

Cited by 14 publications

(5 citation statements)

References 19 publications

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“…20 designed a constant-force bistable micromechanism and its constant-force property was validated experimentally. Parlaktaş 21 developed a novel constant-force mechanism by employing the compliant spatial slider–crank mechanism, and the experimental results have been proved consistent with the design theory. Hao et al.…”

Section: Introductionsupporting

confidence: 52%

Design and experimental validation of a cam-based constant-force compression mechanism with friction considered

Cheng

Xie

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Due to the quasi-zero-stiffness and overload protection characteristics, constant-force mechanisms can be widely used in nonlinear vibration control, high-efficiency shock isolation, and other engineering fields. As a preparatory work for the further applications, this paper presents a cam-based constant-force compression mechanism and validates the quasi-static characteristics experimentally. By employing the friction considered profile identification method to design the cam and through the interaction between the cam and spring-sliders, the constant-force compression mechanism can passively output the desired constant force over a sufficiently large displacement. The design theory is firstly introduced in detail. Through establishing and solving the differential relationship between the lateral elastic force and vertical constant force, the constant-force compression mechanism under various frictional conditions can be designed. Then, constant-force compression mechanism prototypes corresponding to sliding and rolling friction are designed, fabricated and tested respectively. The results show that both the prototypes have the satisfactory characteristics as with the design requirements. Moreover, the relative generality and stronger engineering applicability of the proposed friction considered profile identification method are proved since it can not only cover the frictionless (micro-friction) cases, but keep the constant-force behavior of the constant-force compression mechanism under the nonignorable friction conditions. Therefore, compared with the existing cam-roller constant-force mechanisms that must ensure the ignoring micro-friction demand, the presented constant-force compression mechanism taking friction into consideration has important engineering significance since it can reduce this machining requirement.

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Section: Introductionsupporting

confidence: 52%

Design and experimental validation of a cam-based constant-force compression mechanism with friction considered

Cheng

Xie

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Constant force mechanism (CFM) also known as quasi-zero stiffness mechanism, which can perform output a constant force in a certain range of input displacement [1][2][3]. The CFM that can maintain the output force in a specific value has been widely adopted in application of ultraprecision polishing, micromanipulation, and vibration isolation [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Configuration design and experimental verification of a variable constant-force compliant mechanism

Ding

2022

Robotica

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The realizing of variable output constant force has received wide attention. To achieve a force regulation in an economic way, a configuration of the constant force mechanism (CFM) referring to positive and negative stiffness combination method is proposed in this paper. By adjusting preloading displacement applied on positive-stiffness structure of the CFM, the variable constant force output can be realized. The force–displacement expression of the CFM in the non-preloaded condition is deduced by the established analytical models. Furthermore, parametric sensitivity analysis with several architectural parameters are conducted for optimizing physical structures. Finally, the correctness of the proposed principle is verified by experimental studies. The observed experimental results show that the CFM under different preloading displacements can provide required output constant force, which is consistent with proposed hypothesis.

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“…The first compliant spatial four-bar mechanism that possesses out of plane motions was studied by Tanık and Parlaktaş [18]. Studies about spatial compliant mechanisms are limited in the literature [19][20][21][22][23]. Trease, et al [24] and Rubbert et al [25] proposed designs for compliant universal joint.…”

Section: Introductionmentioning

confidence: 99%