Design and Optimization of a New Compliant Rotary Positioning Stage with Constant Output Torque

Wang, Piyu; Yang, Sijie; Xu, Qingsong

doi:10.1007/s12541-018-0213-x

Cited by 30 publications

(9 citation statements)

References 14 publications

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“…To achieve a constant torque this mechanism uses the fact that bistable beams can have both positive-or negativestiffness behaviour in their post-buckling region [52][53][54]. Usually a bistable beam has a negative stiffness in the postbuckled state, but by manipulating correctly the beam parameters (width, thickness, length and inclination angle) using a finite element software, a region of zero stiffness and hence constant torque can be created.…”

Section: Bistable Beam Mechanismsmentioning

confidence: 99%

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Constant Torque Mechanisms: A Survey

Saerens

Furnémont

Legrand

et al. 2022

Applied Mechanics Reviews

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In this paper an overview is given of all types of constant torque mechanisms (CTMs) based on both function and structure. Based on their architecture they can be divided into five distinct categories which all have their specific behaviour. It is also shown that these CTMs can be divided into two application types, namely power assistance or torque stabilization. Due to the fact that in research mainly constant force mechanisms (CFMs) have been tackled, also some explanation is given on how CFMs can be transformed into CTMs. It is also shown that some of these CTMs have a very high specific energy which can make that they have potential application as energy storage/power provider in novel fields like robotics where they have almost not been used yet.

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Section: Bistable Beam Mechanismsmentioning

confidence: 99%

“…Due to the fact that CFMs [52] are mainly used for linear movements, the only adjustment needed is to transform the linear motion into a rotational one to get a CTM. This conversion should, however, allow a constant speed ratio and a relatively good backdrivability.…”

Section: Constant Force-based Solutionsmentioning

confidence: 99%

Constant Torque Mechanisms: A Survey

Saerens

Furnémont

Legrand

et al. 2022

Applied Mechanics Reviews

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“…is building block tool (as shown in Figure 1) is used in the development of compliant damper in this study for reduction in machine chatter and to improve the surface quality of the product. e 3D printing technology was utilized for developing complex structured mechanism [7] in addition to the simpler designs that are time consuming if traditionally produced. e 3D printing of complaint microholders followed by the finite element analysis using Annoys was carried out [8].…”

Section: Design and Development Of Compliant Dampermentioning

confidence: 99%

“…e prediction of force exerted was within acceptable limits of 4%. A flexure based zero stiffness beam type positioning stage was proposed in order to deliver a constant torque output [7]. Parametric optimization was carried out using Ansys FEA technique and topology optimization with principal structural variables as length, width, thickness, and orientation for constant force shaft.…”

Section: Introductionmentioning

confidence: 99%

Development of Compliant Vibration Isolation Damper and Its Performance Analysis in Turning Operation

Sathyapriya¹,

Natarajan

Kumar

et al. 2022

Advances in Materials Science and Engineering

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The major setback faced by any of the production industry was maintaining the surface quality and dimensional accuracy of parts manufactured. Higher productivity is expected from industrial point of view, but resulting in poor surface texture. This work aims at addressing this problem by developing a suitable damping system for increased production with high precision products. In conventional method, dampers used is assembled of many parts, whereas the innovation in this paper is that the damper structure is monolithic in nature. Hence, manufacture time and cost of new innovative compliant damper is reduced. The work addressed the problem of damping by the use of compliant mechanism developed through building blocks of planar compliant mechanisms synthesis. Finite element analysis (FEA) was carried out in deciding the final form of the damping system. The proposed design was created by following fused deposition modelling (FDM 3D printing technique) using acrylonitrile butadiene styrene (ABS) material. Based on the results obtained from the experiments, the damping system has an impact on the surface quality of the product. The cutting force produced between the cutting edge and work surface could be improved by providing continuous contact (i.e., higher tool stability). The tool stability could be improved by using the compliant damping design and 3D printing technology for developing the complex designs into real products. The major limitation of the proposed work is the complexity in analysing compliant models with all the boundary conditions prevailing in the real time environment. The major influencing boundary conditions could be applied in neglecting insignificant factors. This work is a novel approach for developing a compliant mechanism-based damper that could restrict the effects of chatter in machining operation. The building blocks-based design was produced using 3D printing of the ABS material. Turning of aluminium was analysed for surface improvement by the tool stability improvement. Results revealed the impact of the ABS compliant damper. On an average, surface roughness of the products was reduced by 27.61%.

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“…Scholars have proposed various methods to control the operating force by using force sensors to monitor and control the force in real-time, but this method is complex and difficult [ 5 , 6 , 7 , 8 , 9 ]. In recent years, scholars have developed CFMs to achieve a constant-force output [ 10 , 11 , 12 , 13 ]. Studies have shown that this method does not require complex control devices, has a simpler structure, and is easily operatable.…”

Section: Introductionmentioning

confidence: 99%

Design and Testing of a Novel Nested, Compliant, Constant-Force Mechanism with Millimeter-Scale Strokes

Qin

Liu

et al. 2023

Micromachines

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This paper presents a novel nested, compliant, constant-force mechanism (CFM) that generates millimeter-scale manipulation stroke. The nested structure is utilized to improve the overall compactness of the CFM. A combination strategy of positive and negative stiffness is induced to generate constant force with a millimeter-level range. In particular, bi-stable beams are used as the negative stiffness part, and V-shaped beams are selected as the positive stiffness part, and they are constructed into the nested structures. With this, a design concept of the CFM is first proposed. From this, an analytical model of the CFM was developed based on the pseudo-rigid body method (PRBM) and chain beam constraint model (CBCM), which was verified by conducting a simulation study with nonlinear finite-element analysis (FEA). Meanwhile, a parametric study was conducted to investigate the influence of the dominant design variable on the CFM performance. To demonstrate the performance of the CFM, a prototype was fabricated by wire cutting. The experimental results revealed that the proposed CFM owns a good constant-force property. This configuration of CFM provides new ideas for the design of millimeter-scale, constant-force, micro/nano, and hard-surface manipulation systems.

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Design and Optimization of a New Compliant Rotary Positioning Stage with Constant Output Torque

Cited by 30 publications

References 14 publications

Constant Torque Mechanisms: A Survey

Constant Torque Mechanisms: A Survey

Development of Compliant Vibration Isolation Damper and Its Performance Analysis in Turning Operation

Design and Testing of a Novel Nested, Compliant, Constant-Force Mechanism with Millimeter-Scale Strokes

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