Relevant bibliographies by topics / Forging manipulator

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Forging manipulator'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Forging manipulator"

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Wang, J., F. Gao, and Y. Zhang. "Intelligent Control of a Novel Hydraulic Forging Manipulator." Journal of Robotics 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/530247.

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The increased demand for large-size forgings has led to developments and innovations of heavy-duty forging manipulators. Besides the huge carrying capacity, some robot features such as force perception, delicacy and flexibility, forging manipulators should also possess. The aim of the work is to develop a heavy-duty forging manipulator with robot features by means of combination of methods in mechanical, hydraulic, and control field. In this paper, through kinematic analysis of a novel forging manipulator, control strategy of the manipulator is proposed considering the function and motion of forging manipulators. Hybrid pressure/position control of hydraulic actuators in forging manipulator is realized. The feasibility of the control method has been verified by the experiments on a real prototype of the novel hydraulic forging manipulator in our institute. The intelligent control of the forging manipulator is performed with programmable logic controller which is suitable for industrial applications.
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Petrescu, Florian Ion, and Relly Victoria Petrescu. "Presenting a Railbound Forging Manipulator." Applied Mechanics and Materials 762 (May 2015): 219–24. http://dx.doi.org/10.4028/www.scientific.net/amm.762.219.

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Heavy payload forging manipulators are mainly characterized by large load output and large capacitive load input. The relationships between outputs and inputs have greatly influence about the control and the reliability. Forging manipulators have become more prevalent in the industry today. They are used to manipulate objects to be forged. The most common forging manipulators are moving on a railway to have a greater precision and stability. They have been called the railbound forging manipulators. In this paper one presents the general aspects of a railbound forging manipulator, like geometry, structure, general kinematics and forces of the main mechanism from such manipulator. Kinematic scheme shows a typical forging manipulator, with the basic motions in operation process: walking, motion of the tong and buffering. The lifting mechanism consists of several parts including linkages, hydraulic drives and motion pairs. An idea of establishing the incidence relationship between output characteristics and actuator inputs is proposed.
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Liu, De Shi, and Gang Li. "Dynamic Behavior of the Forging Manipulator under the Press Motions." Key Engineering Materials 419-420 (October 2009): 417–20. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.417.

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When designing forging manipulators, the bending moments transmitted to the manipulator through the workpiece due to the press motions should be reduced to avoid damage to the manipulator and the workpiece. A resilient system is designed to this purpose. This paper investigates the dynamic behavior of the forging manipulator due to press motions, which focuses on the bending moment transmitted to the manipulator. The Forging manipulator parameters assume primary importance in design, such as the clamp mass, resilient stiffness, resilient damping. A parametric study is committed to provide some helpful solutions for forging manipulator design.
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Chu, X., F. Gao, W. Guo, and C. Yan. "Complexity of Heavy-Payload Forging Manipulator Based on Input/Output Velocity Relationship." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 11 (May 14, 2010): 2468–76. http://dx.doi.org/10.1243/09544062jmes2268.

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There are different definitions of complexity in many areas. For a heavy-payload manipulator, the kinematic coupling degree problem, which has much influence on its control and reliability, is very important. This paper proposes a definition of complexity to measure the kinematic coupling degree of a manipulator. After the manipulator's desired output motions in the workshop are obtained, the matrix relating the velocities of actuated joints to the velocities of all basic output motions is calculated. Based on the preceding matrix, the definition of complexity is presented. To illustrate the methods introduced in this paper, four types of heavy-payload forging manipulators (FMs) are analysed, and the type of FM with the smallest complexity is chosen as our prototype.
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Ding, Wen Hua, Hua Deng, Yi Zhang, and Yao Qing Ren. "Optimum Design of the Jaw Clamping Mechanism of Forging Manipulators Based on Force Transmissibility." Applied Mechanics and Materials 157-158 (February 2012): 737–42. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.737.

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In this paper, the jaw clamping mechanism of a forging manipulator is regarded as a slider-crank mechanism. First, the force Jacobian matrix of the mechanism is obtained according to the dual relationship of velocity Jacobian matrix and force Jacobian matrix. Then, the performance atlases of the global force transmission index and the input space index that represents the motion range of the jaw are drawn with different inputs for the mechanisms of the nondimensional parameters. Furthermore, we research the effect of these structure parameters of the mechanism on the gripping force transmission and input space, and find an optimal range in the force transmission atlas. Finally, we synthesize a detail optimal flowchart of the jaw clamping mechanism of forging manipulators based on force transmissibility. A jaw clamping mechanism of a forging manipulator is studied as an example, and results show that the method presented in this paper is effective for finding an optimal gripper mechanism. The research in this paper can be served as fundamentals of design and optimization of the jaw clamping mechanism of forging manipulators.
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He, Jing Fei, Chao Xu, Hua Deng, and Long Han. "The Research on Characteristics of Movement Coupling in Forging Manipulator." Advanced Materials Research 591-593 (November 2012): 648–52. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.648.

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Heavy-duty forging manipulators play an important role in extreme manufacturing. Based on the kinematic model of DDS forcing manipulator, the input- output relation equations in terms of position are derived. According to the actually movement path of output mechanism, a new decoupling concept is defined as to forcing manipulator. The input-output relation matrices in terms of velocity are established at three major motions, and the coupling characteristics of mechanism are analyzed. At last, the theory analysis is proved correct by experimental verification. The results show that three major motion mechanisms of DDS forcing manipulator are partially decoupled under the new decoupling concept compared with the conventional one, which helps to simplify the control strategy of DDS forcing manipulator.
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Xu, Yundou, Yu Liu, Jiantao Yao, and Yongsheng Zhao. "Analysis of a novel lifting mechanism for forging manipulators." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 3 (May 15, 2014): 528–37. http://dx.doi.org/10.1177/0954406214535924.

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In this paper, a hybrid serial–parallel forging manipulator was put forward, which is composed of a planar five-bar mechanism and a two-limb parallel mechanism in series. Forging manipulator’s DOF properties and motion principle were analyzed by means of screw theory. The position solution of the main motion mechanism of manipulator was derived in the grasping stage, which was used to solve input displacements of lifting and pitching hydraulic cylinders depending on the requirements of forged piece’s lifting height and pitching angle. Dimensional optimization of the manipulator’s main motion mechanism is carried out based on position equations, resulting in that the gripper carrier’s lifting motion was decoupled from the horizontal motion. The analytical expression between driving forces of each hydraulic cylinder and external load was derived by solving the first-order derivative of position equations and using principle of virtual work. The results showed that for the parallel-link manipulator, when gripper carrier is horizontal, driving force of lifting hydraulic cylinder is only related to forged piece’s gravity but not to gravitational moment. The mechanism of this phenomenon was also further studied. Experimental model with ratio 1:20 of forging manipulator’s lifting mechanism was developed, and kinematic and static experiments were conducted on it to verify the dimensional optimization results and the conclusion was obtained by the statics.
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Chu, Xiaobing, and Feng Gao. "Kinematic coupling complexity of heavy-payload forging manipulator." Robotica 30, no. 4 (August 26, 2011): 551–58. http://dx.doi.org/10.1017/s0263574711000968.

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SUMMARYThere exist several kinds of definitions for complexity in different areas. In mechanical engineering area, some formulations capable of measuring the complexity of robotic architectures have been proposed at the conceptual-design stage. This paper presents the definition of Kinematic Coupling Complexity to measure the kinematic coupling degree of a manipulator based on the input/output velocity matrix. In order to distinguish the differences among many matrixes, three factors will be considered including the proportion of nonzero elements in matrix J, the difference of nonzero elements' numbers in every row among many matrixes, and the difference of nonzero elements' positions among many matrixes. To illustrate the methods introduced in this paper, four types of heavy-payload forging manipulators are analyzed and the type of forging manipulator with the smallest Kinematic Coupling Complexity is chosen as our prototype.
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Zhou, Hua, and Jiao Yi Hou. "Vertical Load Analysis of the Lifting Systems for Forging Manipulator during the Forging Process." Advanced Materials Research 317-319 (August 2011): 764–69. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.764.

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Holding the work piece for the forging press is the main task of the forging manipulator, and it is recognized as one of industry’s most arduous tasks. To ensure the safety of the manipulator mechanism, the resistance force exerted on the clamp must be minimized [1]. This paper focuses on the vertical load analysis of lifting systems for the forging manipulator when it works in cooperation with the forging press. First the equivalent stiffness model of the work piece is presented and the loads of the lifting systems are derived. Then the hydraulic circuits of the front and the rear lifting systems are investigated. Finally, the whole forging process is analyzed to study the relationship between the tracking error of the lifting systems and the resistance force on them. Simulation of one typical forging process shows that the cause of resistance force on the lifting system is the displacement tracking error.
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Hou, Jiaoyi, Zengmeng Zhang, Hua Zhou, Dayong Ning, and Yongjun Gong. "Hydraulic systems control based on the characteristics of major-motion mechanism for an open-die forging manipulator." Advances in Mechanical Engineering 9, no. 2 (February 2017): 168781401769095. http://dx.doi.org/10.1177/1687814017690959.

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In the open-die forging process, the forging manipulator must cooperate closely with the forging press. Terrible working conditions of open-die forging have resulted in significant demand on the hydraulic control systems of the forging manipulator. This article analyzes the characteristics of major-motion hydraulic systems with the aim of proposing a novel hybrid serial–parallel heavy-duty forging manipulator. Kinematic and dynamic models of the major-motion mechanism are developed to investigate the control and comply with performance of hydraulic lifting, pitching, and buffering systems. Simulation shows that the three hydraulic systems are coupled in the position and posture control of the clamp. A separate posture control method based on the characteristic of the major-motion mechanism is designed for the hydraulic systems, and the position tracking performance of the hydraulic systems is studied in a stretching process of a plat-tool.
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Dissertations / Theses on the topic "Forging manipulator"

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Pokorný, Pavel. "Pohon sériovým zapojením rotačních hydromotorů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318699.

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The thesis deals with the problem of large-capacity manipulation of large forgings with forging manipulator. It describes current techniques, their characteristics, advantages and disadvantages. Based on the analysis of these techniques, the thesis introduces design of the connection of the hydraulic circuit for the drive of the traveling traction wheels of the forging manipulator QKK 100 by ŽĎAS a.s. focusing on simplicity, trouble-free operation, efficiency, economy, change of speed and torque, and possibility of modification according to the current load.
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Books on the topic "Forging manipulator"

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Vernick, Leslie. Forging a strong mother-daughter bond: Beyond manipulation and control. Greensboro, NC: New Growth Press, 2013.

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Foundation, Voltaire, ed. Forging Rousseau: Print, commerce and cultural manipulation in the late Enlightenment. Oxford: Voltaire Foundation, 2001.

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Winter, Stefan. Survey and Punish. Princeton University Press, 2018. http://dx.doi.org/10.23943/princeton/9780691167787.003.0004.

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This chapter examines the Ottoman cadastres in detail, both to demonstrate the extent of the Ottoman state's control over the region in the sixteenth century and to show that the Ottomans did not attempt to annihilate the ʻAlawi population (as is claimed in local folklore) but rather to maximize their tax revenues, maintaining ʻAlawi-specific dues but also emending or even forgiving taxes in areas in need of economic revival. The second part of the chapter draws mainly on Ottoman executive orders to show that the imperial government perceived of brigandage in the coastal mountains committed by ʻAlawis as a social and not a religious problem, repeatedly casting “uneducated” ʻAlawi subjects as the victims of manipulation by more powerful figures, and not discriminating against them on the basis of their religion.
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Book chapters on the topic "Forging manipulator"

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Liu, Deshi, Gang Li, Xinglin Guo, Yonggang Shang, and Dehao Liu. "Performance Optimization of Forging Manipulator during the Whole Forging Stroke." In Intelligent Robotics and Applications, 305–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16587-0_28.

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Ding, Wenhua, Hua Deng, and Jianming Hu. "Kinematic Modeling of a Heavy-Duty Forging Manipulator." In Intelligent Robotics and Applications, 299–310. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33503-7_30.

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Yan, Changya, and Feng Gao. "Dynamic Stability Analysis of a Novel Forging Manipulator." In Intelligent Robotics and Applications, 449–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88518-4_48.

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Zhang, Kai, Gang Li, and Zhan Kang. "Structural Optimization for Wall Frame Design of a Forging Manipulator." In Intelligent Robotics and Applications, 317–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16587-0_29.

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Chen, Wen, Xiaoxun Zhang, and Zhenshan Cui. "Numerical Simulations of Open-Die Forging Process for Manipulator Design." In Intelligent Robotics and Applications, 650–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88518-4_70.

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Hou, Jiaoyi, Hua Zhou, Jun Zou, and Xin Fu. "Velocity Control of the Horizontal Buffer System for Heavy Load Forging Manipulator." In Intelligent Robotics and Applications, 296–304. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16587-0_27.

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Chen, Genliang, Hao Wang, Zhongqin Lin, and Guimin Liu. "Performance Analysis of a Forging Manipulator Based on the Composite Modeling Method." In Intelligent Robotics and Applications, 152–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88513-9_17.

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Yang, Lixin, Hua Deng, and Zhen Xu. "Gripping Force Model and Influence Factors of Gripping Device for Heavy Forging Manipulators." In Intelligent Robotics and Applications, 329–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16587-0_30.

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Marrone, Daniel. "Forging Histories: Ghost Worlds and Invented Communities." In Forging the Past. University Press of Mississippi, 2016. http://dx.doi.org/10.14325/mississippi/9781496807311.003.0008.

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This chapter explores Seth’s invented worlds and interior landscapes, making particular use of Linda Hutcheon’s concepts of the heterocosm and historiographic metafiction, as well as certain frameworks from Hayden White’s landmark work Metahistory (specifically, the conception of three kinds of historiography: fabulous, true, and satirical). Seth ambivalently situates himself in relation to the past by remaking it in fictional form – and in the process encourages the reader to take up a similarly ambivalent position. Seth takes advantage of the credibility often attributed to historicizing discourses, using them to fortify his invented Canadian realities. His work accommodates the double meaning of the word “forge” and in doing so points to the deliberate manipulation of material that even the most apparently neutral history entails. Seth’s work engages readers in the process of making their own historical knowledge. Moreover he prompts readers to make historical knowledge that is ironic, nostalgic, or otherwise ambivalent.
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Mehra, Jayanti, and Ramjeevan Singh Thakur. "A Model for Extracting Most Desired Web Pages." In Transforming Businesses With Bitcoin Mining and Blockchain Applications, 119–45. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0186-3.ch007.

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Weblog analysis takes raw data from access logs and performs study on this data for extracting statistical information. This info incorporates a variety of data for the website activity such as average no. of hits, total no. of user visits, failed and successful cached hits, average time of view, average path length over a website; analytical information such as page was not found errors and server errors; server information, which includes exit and entry pages, single access pages, and top visited pages; requester information like which type of search engines is used, keywords and top referring sites, and so on. In general, the website administrator uses this kind of knowledge to make the system act better, helping in the manipulation process of site, then also forgiving marketing decisions support. Most of the advanced web mining systems practice this kind of information to take out more difficult or complex interpretations using data mining procedures like association rules, clustering, and classification.
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Conference papers on the topic "Forging manipulator"

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Li, Yanwen, Xiaofei Shi, Pengfei Mao, Yubo Cai, and Maoling Wang. "Design and Analysis of a New Type Forging Manipulator." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67302.

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Large-scale forging manipulator is the indispensable equipment in the operations of automated forging. Because of the increasing demand of forging manipulator, large and medium-sized enterprises pay more and more attention to the forging operation in production. Lower freedom parallel mechanism is obtained by using the constraint-synthesis method based on the screw theory, then a mechanism of forging manipulator is designed including raising and lowering, pitching, lateral swing, lateral movement, forth or back and clamp rotation. The new type forging manipulator is a hybrid serial-parallel mechanism. The degree of freedom of the parallel mechanism is calculated by using the modified Grübler-Kutzbach criterion, and then the degree of freedom of the machine is determined. Through closed geometric method, the kinematic position analysis is performed, and the correctness of the theoretical analysis results is verified.
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Li, Qunming, Dan Gao, and Hua Deng. "Analysis of Contact forces for Forging Manipulator Grippers." In 2008 IEEE Conference on Robotics, Automation and Mechatronics (RAM). IEEE, 2008. http://dx.doi.org/10.1109/ramech.2008.4681456.

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Li, Qunming, Qinghua Qin, and Hua Deng. "Analysis of Dynamic Contact Forces for Forging Manipulator Grippers." In 2010 International Conference on Manufacturing Automation (ICMA). IEEE, 2010. http://dx.doi.org/10.1109/icma.2010.19.

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Xu Yundou and Zhao Yongsheng. "Comparative analysis of two typical mechanisms of forging manipulator." In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5535467.

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Ren, Yunpeng, Chongshao Lu, Qingkai Han, Tianxia Zhang, and Bangchun Wen. "Simulated comparison on kinematics properties of two typical mechanisms of forging manipulator." In International Workshop and Conference on Photonics and Nanotechnology 2007, edited by Minoru Sasaki, Gisang Choi Sang, Zushu Li, Ryojun Ikeura, Hyungki Kim, and Fangzheng Xue. SPIE, 2007. http://dx.doi.org/10.1117/12.784509.

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Fugang, Zhai, Kong Xiangdong, Wu Qilei, and Zhu Hanyin. "Study on factors of control characteristics of forging manipulator continuous complex movement based on virtual prototyping." In 2015 International Conference on Fluid Power and Mechatronics (FPM). IEEE, 2015. http://dx.doi.org/10.1109/fpm.2015.7337293.

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Zhao, Kai, Hao Wang, and Guanlong Chen. "Dynamic Simulation of Topology-Varying Mechanisms by Replacing Local Modeling Units." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49579.

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Global simulation of mechanisms with time-varying topology is a tough task because the kinematic and kinetic equations of the whole system should be reformulated at each different topological stage, which increases the difficulty and decreases the efficiency. This paper proposes a new dynamics simulation approach of topology-varying mechanisms by replacing local modeling units. The interchangeability of unit models makes it possible to switch among different topologies automatically without rebuilding the system model. The topology-varying part of the system can be modeled as changeable modeling units, which leaves the other part as a settled one. Local replacement of changeable units will realize the reconfiguration of system model from one topological stage to another. This method has been used to analysis two typical kinds of mechanisms with time-varying topology: mechanism with “lock-unlock” process and with “opening-closing” loop. The simulation of the buffering motion in a forging manipulator is presented here as a case study, which proves the feasibility and efficiency of this new approach.
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Yu Faguo, Gao Feng, Shi Qiaoshuo, Ge Hao, and Zhang Yong. "Structure synthesis for forging manipulators." In 2008 7th World Congress on Intelligent Control and Automation. IEEE, 2008. http://dx.doi.org/10.1109/wcica.2008.4592957.

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SLÁČALA, Jaroslav, Hana ŠPAČKOVÁ, Martin MENŠÍK, Petra SVOBODOVÁ, and Tomáš BARČÁK. "Use of robotic manipulation systems in automation of FORGING processes." In METAL 2020. TANGER Ltd., 2020. http://dx.doi.org/10.37904/metal.2020.3662.

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Liu, Wensheng, and T. J. Nye. "Adaptive Control for Intelligent Open Die Forging." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61789.

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Open die forging is a manufacturing process with a number of advantages; in particular it is an inherently flexible manufacturing process that makes efficient use of raw material. A fundamental drawback of this process, however, is the difficulty found in creating forging programs to control part manipulation and forming steps. A-priori approaches to creating these programs, such as by using FEM simulations or using modeling materials, are slow and have a strong tendency for errors to accumulate when predicting the results of consecutive forming steps. In this paper we present a new approach in which process feedback is used between forming steps to update a part geometry model that allows the forming sequence to be adjusted adaptively. This approach has been implemented in a simulated forging cell that uses non-linear FEM analyses to predict the effects of each forming step. A fully adaptive control scheme has been implemented that efficiently forges bars of one cross sectional shape into another shape, such as square to round or hexagonal. Programming the forging system with this scheme has proved particularly simple; the shape of the raw material is measured, and a desired shape is specified. Physical experiments have confirmed the simulation results.
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