Articles | Volume 7, issue 2
https://doi.org/10.5194/ms-7-247-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/ms-7-247-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
30 Nov 2016
Research article |
| 30 Nov 2016
A structure design method for compliant parallel manipulators with actuation isolation
School of Engineering, University College Cork, Cork, Ireland
Xianwen Kong
School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
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A miniaturized statically balanced compliant mechanism is proposed as a structural solution to effectively lower the working frequencies of vibrational energy harvesters to ultralow levels across a wide bandwidth for practical applications. This mechanism exhibits zero stiffness and zero force within a specific displacement range and stiffness nonlinearity in the overall range. It overcomes the working frequency limit imposed by the size effect, showing great potential application value.
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The Beam Constraint Model (BCM) may yield large predicting errors (> 5 %) when the applied axial force goes beyond a certain boundary. We mathematically determine the nondimensional boundary of the axial force by the conditions of the positive definite quadratic form of the strain energy expression and the buckling load expressions. If the axial force is beyond the boundary, the Chained Beam Constraint Model (CBCM) can be used instead.
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G. Hao
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In this paper, a novel and effective constraint handling method called the individual repairing method is introduced. This method transforms every infeasible point in the search space into a unique
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Based on the freedom and constraint topology approach and atlas approach, a new method for the synthesis of a redundant actuated compliant parallel mechanism is proposed, the synthesis conditions are given, and the synthesis process is formulated. With this proposed method, two new translation redundant actuated compliant parallel mechanisms are synthesized, and some new mechanisms have been synthesized. The degree of freedom analysis verifies the correctness and effectiveness of the method.
Zeng-Hui Hwang, Tsung-Yi Lin, and Hong-Sen Yan
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Song Lin, Yu Zhang, Hanchao Wang, Jingyu Jiang, and Niels Modler
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This paper proposes a novel geometrical approach to compliant mechanism synthesis based on similarity transformation of pole maps. The study demonstrates the feasibility of applying the geometric similarity transformation to the compliant mechanism and then proposes the procedure of synthesis method. In addition, this work illustrates the synthesis method with two examples.
Lei Guo, Zeyu Wang, Yuan Song, Xianjie Shan, and Dongming Gan
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In industrial production, the reducer often determines the accuracy of the machine. Designing a reducer with high strength and good accuracy plays an important role in industrial development. In this paper, combined with previous studies, a new type of reducer based on the lever structure is designed, and the performance of the reducer is optimized. Finally, the most appropriate geometric parameters are obtained to ensure the high efficiency of the reducer. It is effective and stable.
Zheng-Hui Hwang, Hong-Sen Yan, and Tsung-Yi Lin
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Kan Shi, Shuai Lin, and Yan'an Yao
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Amandyk Tuleshov, Recep Halicioglu, Azhar Shadymanova, and Moldir Kuatova
Mech. Sci., 12, 1–8, https://doi.org/10.5194/ms-12-1-2021, https://doi.org/10.5194/ms-12-1-2021, 2021
Xiaoming Wang, Qiaoling Meng, Zhewen Zhang, Jinyue Sun, Jie Yang, and Hongliu Yu
Mech. Sci., 11, 425–436, https://doi.org/10.5194/ms-11-425-2020, https://doi.org/10.5194/ms-11-425-2020, 2020
David W. Andrews, Spencer P. Magleby, and Larry L. Howell
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Thickness-utilizing deployable hard stops (ThUDS) block the motion of a mechanism at a desired position. Designed to reside within the thickness of a design, they can be planar or spatial in nature. Various analyses and design techniques were developed and demonstrated using physical prototypes. ThUDS are able to successfully constrain motion, are able to carry loads, and are useable in various folding applications, including origami-based engineering.
Zhanfeng Zhou, Yongzhuo Gao, Lining Sun, Wei Dong, and Zhijiang Du
Mech. Sci., 11, 75–89, https://doi.org/10.5194/ms-11-75-2020, https://doi.org/10.5194/ms-11-75-2020, 2020
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This paper proposes a novel type of bistable mechanism with linear negative stiffness and large in-plane lateral stiffness. Then, by connecting the negative-stiffness mechanism in parallel with a positive-stiffness mechanism, a novel quasi-zero stiffness compliant mechanism is developed. It has better axial guidance capability and in-plane lateral anti-interference capability compare to the conventional mechanism. Such mechanism can be used as constant-force mechanism and vibration isolator.
Çağıl Merve Tanık, Engin Tanık, Yiğit Yazıcıoğlu, and Volkan Parlaktaş
Mech. Sci., 11, 29–38, https://doi.org/10.5194/ms-11-29-2020, https://doi.org/10.5194/ms-11-29-2020, 2020
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A novel fully compliant slider-crank mechanism with no backlash property is presented. Analysis and design approaches for the fully compliant slider-crank mechanism are proposed. A design table displaying stroke, axis drift of the output segment, and critical stresses of compliant segments are presented. Approaches are verified with FEA simulations and experiment.
Sinh Nguyen Phu, Terence Essomba, Irwansyah Idram, and Jiing-Yi Lai
Mech. Sci., 10, 589–604, https://doi.org/10.5194/ms-10-589-2019, https://doi.org/10.5194/ms-10-589-2019, 2019
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In order to allow healing from severe fractures cases, a new mechanism is proposed for bone reduction surgery. This hybrid architecture is made of a double triangular planar mechanism and a tripod mechanism. Its kinematic and velocity model are computed while considering the compensation of parasitic motions. Kinematic data obtained from medical image of real case are used for simulations. When compared with the standard Steward mechanism, the present mechanism shows larger workspace.
Lairong Yin, Long Huang, Juan Huang, Peng Xu, Xuejun Peng, and Peng Zhang
Mech. Sci., 10, 545–552, https://doi.org/10.5194/ms-10-545-2019, https://doi.org/10.5194/ms-10-545-2019, 2019
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The optimum design mentioned in the paper was to choose optimum mechanism from the infinite number of mechanism solutions. By imposing constraints, the optimum mechanism solution was straightforwardly identified by the designers. The design data have been obtained and converted into a series of design graphs by the computer program which can be used to synthesize easily four-bar linkages yielding desired straight-line outputs of predetermined position.
Emre Arabaci
Mech. Sci., 10, 497–503, https://doi.org/10.5194/ms-10-497-2019, https://doi.org/10.5194/ms-10-497-2019, 2019
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Valve mechanisms are needed to control the intake and exhaust processes of today's engines. The valves in this valve mechanism are actuated by machine parts called camshafts. The cams on the camshaft have specially designed profiles for the movement of the valves. Different cam profiles must be created for each engine size and characteristic. In this study, the camshaft design parameters were dimensioned and thus a new design approach that can be used in all cam designs was presented.
Guangming Wang, Hao Zhang, Xiaoyu Li, Jiabo Wang, Xiaohui Zhang, and Guoqiang Fan
Mech. Sci., 10, 309–320, https://doi.org/10.5194/ms-10-309-2019, https://doi.org/10.5194/ms-10-309-2019, 2019
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We sometimes meet the problem of linkage synthesis for 4 specified orientations. For example, we need to design an automobile seat based on spherical 4R linkage to move the driver to the ground. According to the traditional Burmester theory, most of the linkage solutions have motion defects, which lead to low computational efficiency. In this paper, a program package was developed under Matlab, which can quickly locate the feasible linkage solution under the guidance of solutions map.
Lingtao Yu, Xiaoyan Yu, Xiao Chen, and Fengfeng Zhang
Mech. Sci., 10, 119–131, https://doi.org/10.5194/ms-10-119-2019, https://doi.org/10.5194/ms-10-119-2019, 2019
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In this paper, the preoperative planning algorithm is proposed, which makes the laparoscope provide a reasonable initial visual field. The algorithm offers significant improvements in planning time and quality for robot-assisted laparoscopic surgery. The improved method which combines the preoperative planning algorithm with deep reinforcement learning algorithm is applied to laparoscope arm automatic positioning. The algorithm provides a basis for the robot-assisted laparoscopic surgery.
Alex Avila, Spencer P. Magleby, Robert J. Lang, and Larry L. Howell
Mech. Sci., 10, 91–105, https://doi.org/10.5194/ms-10-91-2019, https://doi.org/10.5194/ms-10-91-2019, 2019
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Origami is a powerful and elegant tool that can be used by engineers to overcome challenges. The shape of the origami is essential to this. We categorize the shapes (fold states) of origami into seven classifications. This categorization method is supported by analyzing 69 origami-based devices for correlations between the classification and the types of functions they perform. These correlations can be used to design and select origami fold states.
Lairong Yin, Long Huang, Juan Huang, Lei Tian, and Fangyi Li
Mech. Sci., 10, 25–33, https://doi.org/10.5194/ms-10-25-2019, https://doi.org/10.5194/ms-10-25-2019, 2019
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We present a solution-region-based synthesis approach for selecting optimal four-bar linkages with a Ball-Burmester point. We discuss both general and special cases of the Burmester point that coincide with the Ball point at the pole of the inflection circle. We generate different mechanism property charts by developing mechanism software that enables users to intuitively identify relevant linkage information and select the optimal linkage.
Raşit Karakuş and Engin Tanık
Mech. Sci., 9, 327–336, https://doi.org/10.5194/ms-9-327-2018, https://doi.org/10.5194/ms-9-327-2018, 2018
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In this study, a compliant wiper mechanism is presented which can be used in land, air, and sea vehicles, particularly the automotive industry. The wiper mechanism is essentially a partially compliant four-bar mechanism. To the best of our knowledge, this is the first compliant wiper mechanism in the literature. After the theoretical calculations, a prototype is manufactured and an experiment is set up. The data obtained from the experimental setup are compared with the theoretical results.
Jianyou Han and Yang Cao
Mech. Sci., 9, 297–305, https://doi.org/10.5194/ms-9-297-2018, https://doi.org/10.5194/ms-9-297-2018, 2018
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The paper presents a solution region synthesis methodology for RCCC linkages. First, we couple the RC and CC dyads for obtaining all synthesis equations. Then using the solution region theory and Bertini software, all solutions for RCCC linkages can be obtained. The key contribution of this paper is that all solutions of RCCC linkages for four specific poses are obtained. Only one RCCC linkage can be synthesized by the methods published before;
Izzat Al-Darraji, Ali Kılıç, and Sadettin Kapucu
Mech. Sci., 9, 277–296, https://doi.org/10.5194/ms-9-277-2018, https://doi.org/10.5194/ms-9-277-2018, 2018
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The aim of this study is to integrate suggested control algorithms with a mechatronic design of underactuated adjustable stiffness finger for improving grasping operation. The designed robot finger system has the following main features: (1) preventing damage of objects during contact with phalanges, (2) having firm grasping, (3) adjusting grasped-forces on phalanges by stiffness of joints, and (4) implementing job independently without external control unit.
Shixun Fan, Hua Liu, and Dapeng Fan
Mech. Sci., 9, 161–176, https://doi.org/10.5194/ms-9-161-2018, https://doi.org/10.5194/ms-9-161-2018, 2018
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This article proposes a novel monolithic compliant spatial parallel XY stage (SPXYS). An important feature of the SPXYS lies in that it can deliver centimeter travel range and sustain large out-of-plane payload while possessing a compact structure, which makes the SPXYS suitable for some special applications such as Ultra-Violet Nanoimprint Lithography and soft-contact lithography.
Zirong Luo, Jianzhong Shang, Guowu Wei, and Lei Ren
Mech. Sci., 9, 103–121, https://doi.org/10.5194/ms-9-103-2018, https://doi.org/10.5194/ms-9-103-2018, 2018
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A systematic method was proposed for the synthesis and creative design of novel structures that can be used to build wheeled mobile robot. The proposed method has led to 236 new design schemes. Mathematical models and a software platform were developed to provide appropriate and intuitive tools for simulating and evaluating performance of the wheeled robots. Physical prototypes of sample wheeled robots were developed and tested, proving and validating the principle and methodology presented.
Zhiqing Liu, Zhen Zhang, and Peng Yan
Mech. Sci., 9, 41–50, https://doi.org/10.5194/ms-9-41-2018, https://doi.org/10.5194/ms-9-41-2018, 2018
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It is proposed a novel design method for large stroke XY compliant mechanisms. An important feature of the design lies in it restricts the parasitic rotation by reducing the moment of force instead of increasing the rotational stiffness widely utilized in the literature. It is presented a millimeter stroke XY nanomanipulator with the proposed design based redundant constraint in a case study. The proposed design provides an alternative to reduce the parasitic rotation of XY compliant mechanism.
Yueling Lyu, Yangzhi Chen, and Yifan Lin
Mech. Sci., 8, 369–383, https://doi.org/10.5194/ms-8-369-2017, https://doi.org/10.5194/ms-8-369-2017, 2017
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In this paper, oriented to the additive manufacturing technology, a skew line gear pair, whose number of the line tooth of the driving line gear is 1, is designed to improve its strength and overall stiffness, to reduce its volume and manufacturing cost.This paper provides a basic theory for the skew line gear pair applied in conventional powered transmission field.
Cited articles
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Short summary
This paper proposes a general method for the design of compliant parallel robots that can be actively controlled by linear actuators. This method firstly designs an original robot with desired mobility and then adds actuation legs in an appropriate way. Analytical modelling has been carried out to discuss the advantages and disadvantages of the method.
This paper proposes a general method for the design of compliant parallel robots that can be...
