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Journal articles on the topic 'Machinery, Kinematics of – Research'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Timofeev, G. A., I. Z. Kataev, and D. M. Samsonenko. "Research of the Rhombic Mechanism Kinematics." Proceedings of Higher Educational Institutions. Маchine Building, no. 4 (733) (April 2021): 12–17. http://dx.doi.org/10.18698/0536-1044-2021-4-12-17.

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Designing modern mechanisms and machines is a very complex and iterative process. One of its first stages is the kinematic analysis of mechanisms followed by structural, dynamic, kinetostatic, etc. The scheme of an asymmetric rhombic mechanism with a developed drive arm of the working group is investigated. The kinematics of the characteristic links points of this mechanism is considered: their kinematic pairs and centers of mass. The kinematics of points and links of this mechanism is considered. The main dependencies for determining the analogs of the velocities and accelerations of points a

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2

Cong, Hong Bin, Ru Xin Li, and Xin Yue Han. "Application of Kinematics Simulation Technology in Agricultural Machinery Design." Advanced Materials Research 97-101 (March 2010): 3447–50. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3447.

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In this paper, the research status and the significance of the simulation technology were discussed, and the necessity introducing the simulation technology into the agricultural machinery design was analyzed. Through the material kinematics simulation in processing, both the component kinematics simulation and the system dynamic simulation of the agricultural machinery, a specific application of the simulation technology in the agriculture machinery design was displayed. Application of the simulation technology in the agricultural machinery design has a vital significance for enhancing their

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3

Shi, Zhi Hui, Xin Lei Ma, and Bi Hong Lu. "Research on Collision Method for Irregular Mechanism Kinematics Simulation." Advanced Materials Research 97-101 (March 2010): 3418–22. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3418.

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General kinematics simulation is only for regular mechanism about turning in fix axis, shifting on plane as well as their compound motions. However, there is no mature technique supporting kinematic simulation for those mechanisms depending on clearance operation such as lorry couplers. Considering such irregularly mechanism, authors proposed a method based on collision kinematics simulation, and combining structure analysis as well as virtual assembly in Pro/Engineer. According to methods above, authors implemented three postures of coupler operation kinematics simulation, as well as the reli

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4

Cioară, Romeo. "On the Kinematic Structure of Cold Forming Machine-Tools with Several Main Effector Elements." Applied Mechanics and Materials 657 (October 2014): 111–15. http://dx.doi.org/10.4028/www.scientific.net/amm.657.111.

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The evolution of modern industrial society is based on the conceiving of new, high-performance machine-tools, with an emphasis on cold forming ones. Identifying new constructive and/or kinematic solutions is one of the modalities ensuring the desired progress.Machine-tool kinematics is a field allowing for the synthesized representation of the often complex structures of existing machines, thus facilitating their study upon removal of less non-essential details [, as well as for conceiving new machines starting from imposed requirements reflected in adequate kinematic structures together with

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5

Shao, M. K., Z. Wang, Jing Zhang Zhi, Rong Zong Wu, and Run Wang. "Research on Post Processing of 5-Axis Linkage Machines." Applied Mechanics and Materials 141 (November 2011): 438–41. http://dx.doi.org/10.4028/www.scientific.net/amm.141.438.

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This article introduces the main task and trend of post processing of 5-linkage CNC machine. The kinematics model of 5-axis linkage CNC machine with two rotary tables was established by using the theory of mechanism and homogeneous coordinate transformation. The distribution of linear coordinate transformation and the rotate angle of machine tools were deduced by analyzing the kinematics model. Referencing above formulae, the machine’s post processing program was compiled in SOLIDCAM according to specific machine’s structure. The NC code of impeller was generated by it, and simulated it in VER

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Li, Zheng Qiang. "Research on Simulation of Kinematics and Dynamics for Planner Six-Bar Mechanism Based on MATLAB/Simulink." Applied Mechanics and Materials 391 (September 2013): 109–13. http://dx.doi.org/10.4028/www.scientific.net/amm.391.109.

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Planner multi-bar mechanisms are widely used in the machinery industry. In this article, a typical planner six-bar mechanism is researched. The kinematics and dynamics mathematical model is established for this kind of mechanism. On the basis of it, a relevant simulation is carried out through MATLAB/Simulink. Thus, the motion rules and stress state for all parts of the mechanism are described vividly. The simulation results show that this method is much more effective and efficient when the simulation is implemented for a certain machine system. Meanwhile, it provides a theoretical foundation

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Hwang, Yunn Lin, Thi Na Ta, and Cao Sang Tran. "Dynamic Analysis and Control of Hydraulic Machine System and Industrial Robotic Manipulators." Applied Mechanics and Materials 883 (July 2018): 1–7. http://dx.doi.org/10.4028/www.scientific.net/amm.883.1.

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Dynamic control on hydraulic machine system and kinematic control on industrial robotic manipulators are two studied topics in this research. The main objective of this study is to analyze dynamic, forward kinematic and inverse kinematic on a couple of mechanical systems and hydraulic mechanical systems in order to control these machines. The characteristics of hydraulic and manipulator robot parameters are firstly calculated by using dynamic theories. In the former topic, we perform an example on CNC machine tools which is designing a hydraulic controller to move a cutting tool along a circul

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8

Chen, Yan, Jian Hao Tan, Xiang Jun Zou, Li Juan Chen, Bo Li, and Jing Wang. "Research on the NC Woodworking Curve Band Saw CAM." Key Engineering Materials 621 (August 2014): 101–6. http://dx.doi.org/10.4028/www.scientific.net/kem.621.101.

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To achieve the processing program and simulation verification on NC Woodworking Curve Band Saw (WCBS) that facilitates the industrialization and practicality of the woodworking machinery, the articles proposes the CAM system modules by the analysis of its composition structure and working principle of the machine and the building-up of its kinematics model. The article also explains the basic functions for each module and develops the CAM systems of MJS1325 WCBS with the use of VC++ and OpenGL. Reading and analyzing the CAD work piece graphics files, the CAM systems is able to generate the NC

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9

Yu, Hong Jian, Bing Li, Yang Wang, and Ying Hu. "Kinematics and Dexterity Analysis for a Novel Hybrid Kinematic Machine." Key Engineering Materials 516 (June 2012): 420–25. http://dx.doi.org/10.4028/www.scientific.net/kem.516.420.

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In this paper a novel 4 Degree-of-Freedom (DOF) parallel mechanism with the configuration of 4PUS-1RPU is applied for a 5-axis Hybrid Kinematic Machine (HKM), combined with an additional linear motion. The Parallel Kinematic Mechanism (PKM) is composed of four symmetrical driving chains and one central passive sub-chain. Firstly, the mechanism is described, and the mobility is analyzed. Then the inverse kinematics of the 4-DOF PKM and the direct kinematics for the serial central sub-chain are then presented. The dexterity and the workspace analysis for the mechanism are also carried out. Final

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10

Feng, Zhi You, Zhi Guo Gao, Ting Li Yang, and Ce Zhang. "A New Parallel Kinematic Machine UPS-2RPS and Kinematics Analysis." Materials Science Forum 626-627 (August 2009): 417–22. http://dx.doi.org/10.4028/www.scientific.net/msf.626-627.417.

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A new parallel kinematic machine UPS-2RPS with serial input limb is presented, the topological structure characteristics are described. The mathematic model of inverse position solution is derived. The workspace of the mechanism is analyzed and researched by results of MATLAB and Pro/E simulation, The research will be of great significance to promote its novation, application and spread .

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11

Hu, Bo, Bo Li, and He Cui. "Design and kinematics analysis of a novel serial–parallel kinematic machine." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 18 (2016): 3331–46. http://dx.doi.org/10.1177/0954406215624450.

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A novel serial–parallel kinematic machine based on a serial–parallel manipulator is proposed and its kinematics and statics are studied systematically. First, the concept of serial–parallel kinematic machine formed by the 3-PRS parallel manipulator and the 2-UPR + SPR PM is proposed. Second, the displacement is derived in close form based on the geometrical and dimensional constraints existed in the serial–parallel kinematic machine. Third, the Jacobian, velocity and statics of the serial–parallel kinematic machine are derived in the explicit and compact form. Finally, the formulas for solving

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12

Li, Yan, and You Li Chen. "Research on the Kinematics of Line Heating Robot Based on SVM." Applied Mechanics and Materials 668-669 (October 2014): 361–65. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.361.

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The paper mainly analyzed the robot kinematics of the line heating plate. In order to realize the moving of complex trajectory for the robot, a forward kinematics modeling and the simulation of inverse kinematics are carried out. Firstly, with the D-H modeling method, the line heating plate robot forward kinematics equations and the spatial geometric model of the manipulator are set up, then multi-input multi-output systems based on support vector machines algorithm is used to establish the inverse kinematics model for the robot . At last, the simulations of tracing complex trajectory with the

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13

Kuz'min, A. O., V. V. Popov, and S. M. Stazhkov. "Hydrodynamic processes in the piston and cylinder unit of axial-piston hydraulic machines." Journal of «Almaz – Antey» Air and Space Defence Corporation, no. 4 (December 30, 2017): 86–90. http://dx.doi.org/10.38013/2542-0542-2017-4-86-90.

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The purpose of the research was to analyze the kinematics of the piston mechanism of an axial-piston hydraulic machine with an adjustable-angle cam plate. The kinematic analysis resulted in establishing various types of relative motion of the piston in the guide bushing, writing and solving Reynolds equation with respect to velocities. A sweep method was used to construct a pressure field in the working fluid layer between the piston and the guide bushing. Pressure fields are constructed for several cases of kinematics of the piston mechanism.

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14

Qiu, Ying, Wei Min Li, and Zhi Wei. "The Kinematics Analysis and Study on Triangular Elbow Servo Press." Applied Mechanics and Materials 121-126 (October 2011): 1636–40. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.1636.

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Servo presses are widely used in high-precision, complicated forming process fields and promoted around the world in recent years. It is the trend of forging machinery for its servo motor-based digital heavy haul driven technology. At present, it becomes the hot research field. The structure characteristics of triangular elbow servo press were firstly introduced in the paper. And then the kinematics mathematical model of triangular elbow transmission mechanism was deduced and given. Based on it, this paper provides the slider kinematics analysis by Matlab. The slider motion law under various p

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15

Guo, Jian Ye, Chao Yu, and Jia Shun Shi. "The Error Modeling on a Kind of Parallel Machine Tool in Considering the Joint Gap." Advanced Materials Research 129-131 (August 2010): 266–70. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.266.

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This paper takes a kind of 3-UPS Parallel Machine Tool (PMT) as the objective of research. First, the kinematic analysis is carried out to the machine and the kinematics equation is obtained. Then, the mathematical model on tool posture error of this machine is established in considering the joint gap based on the kinematics equation. According to the mathematical model expression, the posture error of tool tip point can be calculated when the specific values to the length error of the driving rod and the position error of the joint point are known. The establishment of error model has importa

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16

Hu, Zhan Qi, Ya Fei Xie, and Jin Chao Liu. "The Research of Super-Heavy CNC Machine Accuracy Reliability Based on Multi-Body Kinematics." Advanced Materials Research 211-212 (February 2011): 115–21. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.115.

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In order to solve the key technical problem in maintenance and repairing of heavy CNC machine tools, the concept of precision reliability and its forecasting module are proposed. The method is especially used for researching of reliability of heavy machine tools of which the samples are not enough for statistical methods. Firstly, spatial error module is established for a type of super heavy mill &boring machine tool based on multy-body kinematics. Then, the effect of wearing amount of kinematic pair of machine tools on machining precision is researched. Therefore forecasting modules for m

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17

Chang, T.-H., S.-L. Chen, C.-A. Kang, and I. Inasaki. "Design optimization of the linkage dimension for a hybrid-type parallel kinematic machine tool." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 216, no. 2 (2002): 143–56. http://dx.doi.org/10.1243/14644190260070385.

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The parallel kinematic machine tool has many advantages including excellent loading capacity, high structural stiffness and small accumulated error of linkage. It has become one of the most important research fields for machine tools. In the present research, a principle for the optimization of the dimensional design parameters of a parallel kinematic machine tool is proposed. A five-degree-of-freedom (5DOF) parallel kinematic machine tool with a TRR-XY hybrid mechanism is chosen for investigating the design procedures and the optimization results. The inverse kinematics of the hybrid mechanis

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18

Castiello, Umberto, and Marco Dadda. "A review and consideration on the kinematics of reach-to-grasp movements in macaque monkeys." Journal of Neurophysiology 121, no. 1 (2019): 188–204. http://dx.doi.org/10.1152/jn.00598.2018.

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The bases for understanding the neuronal mechanisms that underlie the control of reach-to-grasp movements among nonhuman primates, particularly macaques, has been widely studied. However, only a few kinematic descriptions of their prehensile actions are available. A thorough understanding of macaques’ prehensile movements is manifestly critical, in light of their role in biomedical research as valuable models for studying neuromotor disorders and brain mechanisms, as well as for developing brain-machine interfaces to facilitate arm control. This article aims to review the current state of know

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19

Zhu, Jin Da, Li Bing Liu, and Ze Qing Yang. "Research of Collaborative Simulation Modeling of High-Speed Machine Tools." Applied Mechanics and Materials 608-609 (October 2014): 31–35. http://dx.doi.org/10.4028/www.scientific.net/amm.608-609.31.

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Dynamic effects of machining processing could not be ignored with the increasing speed of CNC machine tools, the analysis of kinematic behavior related to the kinematics, dynamics and control system etc, and there were a lot of coupling relationship of these systems. A simulation of single discipline could not reflect the overall performance with having to the simplification of the other discipline. It proposed a collaborative simulation modeling method based HLA for CNC machine tools. The development process of HLA-based simulation mainly involved system design, high level modeling, domain mo

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20

Yao, Ying Xue, Shun Zhou Yu, and Da Gang Xie. "Research on Kinematic Analysis and Post Processing Arithmetic for NC Machine Tool for Bonnet Tool Polishing." Key Engineering Materials 364-366 (December 2007): 707–12. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.707.

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Bonnet tool polishing, combined traditional optical polishing technique with modern NC technology, is an novel optical polishing technique. As the motion control and material removal process is different from metal cutting NC machine tool, the NC programming for bonnet tool polishing NC machine tools cannot be carried out with commercial CAM software. This paper analyses the kinematics of feed mechanism and precession mechanism using coordinate transformation method and sets up the feed and precession kinematics equations. The arithmetic of post processing applied to NC automatic programming s

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21

Tian, Guo Fu, Ke Wen Wang, and Yu Zhang. "Research on the Sprocket Tooth Shape of Sintering Machine." Applied Mechanics and Materials 307 (February 2013): 200–205. http://dx.doi.org/10.4028/www.scientific.net/amm.307.200.

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The principle and characteristic of odd-tooth sprocket and even-tooth sprocket of sintering machine were discussed from kinematics and dynamics. The advantages of the two types tooth shapes are given. The odd tooth can receive uniform force. The design of the odd tooth shape is determined by experience, it can’t accurately meet the movement needs. Even tooth sprocket tooth curve is derived from the analytical formula, but it receives non-uniform force. Both of the two types tooth shapes affect the sintering machine’s motion performance and thus affect the productivity and economy. The work hel

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22

Mitrache, Paul-Marius, Radu Ciupercă, and Ioan Sărăcin. "Kinematics of the seedling plant with vertical distributor and buckets." E3S Web of Conferences 286 (2021): 03012. http://dx.doi.org/10.1051/e3sconf/202128603012.

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In this paper are presented some theoretical and experimental research on the kinematics of planting seedlings of vertical disc type and buckets, the variant of planting directly in the cultivated soil, the kinematics that must ensure the correlation between the working speed of the planting equipment and the speed periphery of the bucket, so that the seedling is planted in an upright position. After a brief presentation of the research carried out worldwide in the field, the kinematic scheme of the planting apparatus and the condition that must be fulfilled by the construction and operation o

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23

Wei, Yong Geng, Zhong Xian Wang, Qiang Li, and Yong Shi. "Research on CNC of FSW with Serial-Parallel Structure Based on 3-PRS Mechanism." Key Engineering Materials 667 (October 2015): 568–74. http://dx.doi.org/10.4028/www.scientific.net/kem.667.568.

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With the increase of welding thickness, Friction stir welding equipment (FSW) with traditional milling machine structure could not meet the requirements of stiffness which to support the huge axis load. Therefore, a FSW with serial-parallel mechanism based on 3-PRS platform was proposed. In order to complete real-time control and the actual and virtual axis control of the equipment, the positive solution and inverse solution (based on Newton-Euler method) of the FSW are analyzed. Then, based on the PA system, the open CNC of the equipment is designed, and the inverse kinematics and the numeric

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24

Gao, Meng. "CALIBRATION EXPERIMENT RESEARCH OF PARALLEL KINEMATICS MACHINE WITH A FEW DEGREES." Chinese Journal of Mechanical Engineering 39, no. 09 (2003): 118. http://dx.doi.org/10.3901/jme.2003.09.118.

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25

Платонова, Marina Platonova, Платонов, Aleksey Platonov, Драпалюк, and Mikhail Drapalyuk. "Basic results of research of kinematics and dynamics little links of the mechanism of forest machines." Forestry Engineering Journal 5, no. 4 (2015): 208–14. http://dx.doi.org/10.12737/17424.

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Currently, the traffic safety on the railways remains a topical problem of removing unwanted trees and shrubs in the right of way of railways. To improve the efficiency removal of unwanted shoots and branches and stumps, reducing the share of manual labor and facilitation of staff by the authors in 2015 were investigated little links resources saving compact means of mechanization, allowing their use in hard to reach places. These means of mechanization considered in combination with modern the vehicles, which can provide them with the necessary energy, both on the railroad track, and away fro

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26

Chen, Jian Xiong, and Shu Wen Lin. "Research on Geometric Error Model for Multi-Axis CNC Machines Based on Differential Transform." Key Engineering Materials 522 (August 2012): 359–63. http://dx.doi.org/10.4028/www.scientific.net/kem.522.359.

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The geometric error of machine axis can be equivalent to the differential movement, regarded as a differential operator based on its ideal position. Thus, a new modeling method for multi-axis CNC machines based on differential transform theory is proposed in this paper. Firstly, the workpiece coordinate system is selected to observe the error of tools cutter location and orientation. Then, the kinematics chain of the machine will be consolidated into one, and the closed chain can be changed to open series type. The transform matrix is adopted to convert the differential operator between the di

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27

Li, Gang, Li Da Zhu, Jian Yu Yang, and Wan Shan Wang. "Research of Kinematics Simulation of TBM Segment Erector Based on Virtual Prototype." Applied Mechanics and Materials 236-237 (November 2012): 418–21. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.418.

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In order to solve the problems such as more restriction conditions, complicated interference and longer design periods in the design process of segment erector for Tunnel Boring Machine, it is necessary to study on the kinematics simulation of TBM segment erector. First of all, the kinematics characteristics of segment erector are analyzed; the 3-D model is designed in Pro/E environment; the model is imported into ADAMS and the dynamic simulation is finished finally. After the analysis of simulation of this mechanism, the curves of the speed for the driving parts are obtained and the maximum s

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28

Xiong, Teng Fei, and Chun Zhang. "Design and Research of Cam for Paper-Separation Mechanism." Applied Mechanics and Materials 246-247 (December 2012): 999–1002. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.999.

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A kind of paper-separation mechanism of packing machine for medicine was introduced in this paper. A new parametric equation of cam profile is designed on the basis of the kinematics rules of suction nozzle. Model building of cams are accomplished by using software SolidWorks.

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Simpson, M., and I. A. Gorlach. "A Kinematic Model for Volumetric Error Estimation of a Special Purpose CNC Machine." Applied Mechanics and Materials 232 (November 2012): 367–71. http://dx.doi.org/10.4028/www.scientific.net/amm.232.367.

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This research reports on error identification and compensation of a special purpose CNC machine. The kinematic model of the machine was developed using rigid body kinematics and small angle approximation of the axes of the machine through homogenous transform matrices, and the equations describing the volumetric errors. The machine was calibrated to measure the axes errors, which were used in the kinematic model in order to determine compensation values. The model was evaluated by means of direct measurements of axis movements using a laser interferometer, as well as in cutting tests, where a

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Fleischer, Jürgen, and Jan Philipp Schmidt-Ewig. "Design and Optimization of an Innovative Machine Kinematics for Combined Handling and Machining." Advanced Materials Research 10 (February 2006): 163–0. http://dx.doi.org/10.4028/www.scientific.net/amr.10.163.

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The importance of rigid and self supporting space frame structures for the automotive and aerospace industry continually increases. To meet the market requirements for a flexible and competitive small batch production, innovative machine concepts must be investigated. By integrating handling and machining capabilities into one machine structure, redundant degrees of freedom can be reduced and a former idle economic potential can be made use of. This paper introduces a systematic approach to reveal synergetic potentials that emerge by integrating two different fields of function, the handling a

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31

Guo, Jian Ye, Jia Shun Shi, and Liang Zhao. "Research on Error Compensation by Semi-Closed Loop Control for a 3-UPS Parallel Machine Tool." Advanced Materials Research 461 (February 2012): 272–76. http://dx.doi.org/10.4028/www.scientific.net/amr.461.272.

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This paper took a 3-UPS Parallel Machine Tool (PMT) as the object of research; it mainly introduced the process of establishing the compensation strategy for this PMT. Firstly the kinematics equations on driving chain and constraint chain was established on the basis of kinematics analysis. Then according to the structural characteristics and the results of kinematics analysis, the error compensation strategy of feedback correction type with the semi-closed loop control mode was used in the error compensation for this PMT by the method of installing respectively the encoders on the each joint

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Li, Yong Qiao, Yong Xiang Chen, and Qiang Chen. "Research on Nonlinear Error Analysis and Overproof Processing Method in Five-Axis NC Machining with Dual Turntable." Applied Mechanics and Materials 121-126 (October 2011): 3662–66. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3662.

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As for the widely used five-axis NC machine with dual turntable, this paper constructs the kinematics mathematic model and finishes solving the machine kinematics formula on the basis of workpiece coordinates system. On the basis of detailed discussion on the effective method for calculating nonlinear error, this paper provides the analysis and calculation and processing procedure for overproof. By processing cutter location (CL) data, the validity and feasibility of the method is tested correct by simulation. Accordingly, this paper provides an inerrable basis for the overproof processing met

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Xie, Chun, and Wei Min Zhang. "Structural Kinematics and Error Law Research of 5-Axis Turning-Milling Complex Centers." Advanced Materials Research 148-149 (October 2010): 649–52. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.649.

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A 5-axis turning-milling complex center (TMC) is regarded as the combination of a turning center (TC) and a machining center (MC). However, in structural kinematic chains and kinematic properties, TMCs are pretty different from TCs and MCs, which causes that TMC error generations has inherent properties. This paper researched kinematic chain, controllable axis, simultaneous moving axis, processable part face and error component, from the view of machine structures. A simple calculation formula of error component numbers on CNC machine tools is pointed out according to controllable axis numbers

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Zhang, Haiqiang, Hairong Fang, Dan Zhang, Xueling Luo, and Qi Zou. "Forward Kinematics and Workspace Determination of a Novel Redundantly Actuated Parallel Manipulator." International Journal of Aerospace Engineering 2019 (May 12, 2019): 1–14. http://dx.doi.org/10.1155/2019/4769174.

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This paper presents a novel redundantly actuated 2RPU-2SPR parallel manipulator that can be employed to form a five-axis hybrid kinematic machine tool for large heterogeneous complex structural component machining in aerospace field. On the contrary to series manipulators, the parallel manipulator has the potential merits of high stiffness, high speed, excellent dynamic performance, and complicated surface processing capability. First, by resorting to the screw theory, the degree of freedom of the proposed parallel manipulator is briefly addressed with general configuration and verified by Grü

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Chen, Yue Peng, Hong Wei Fu, and Biao Wang. "Research on Accuracy Analysis and Simulation for Typical Parts with PRS-XY NC Hybrid PMT." Advanced Materials Research 148-149 (October 2010): 299–303. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.299.

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The paper presented a set of PRS-XY hybrid PMT, made up of a set of 3-PRS parallel mechanism and an X-Y table. For advancing the motion accuracy of the PRS-XY type hybrid CNC machine tool, the forward kinematics model and inverse kinematics model have been made, and main error sources affect to machine tool’s precision was established. The relative position of workpiece and the tool of PRS-XY PMT wad discussed, and the coordinate of tool surface was calculated in various process models. The chamfer shape with variation of main error sources was drawn in simulation software, and the processing

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Puerta-Morales, Francisco Javier, Jorge Salguero Gomez, and Severo Raul Fernandez-Vidal. "Study of the Influence of Helical Milling Parameters on the Quality of Holes in the UNS R56400 Alloy." Applied Sciences 10, no. 3 (2020): 845. http://dx.doi.org/10.3390/app10030845.

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Helical milling has been positioned as an alternative to conventional drilling, where the advantages it offers make it very attractive for use on difficult-to-machine alloys such as the titanium alloy UNS R56400. However, the correlation between the indicator of hole quality and the kinematic parameters has rarely been studied. The kinematics are what bring most advantages and that is why it is necessary to know their influence. In this aspect, there are different focuses of problems associated with the complexity of the process kinematics, which makes it necessary to undertake a deeper analys

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Chen, Tzu-Hsia, and Long-Chang Hsieh. "The Design of Mold Clamping Mechanisms with Two Dead-Position Configurations." Advances in Technology Innovation 5, no. 1 (2020): 33–44. http://dx.doi.org/10.46604/aiti.2020.4164.

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Blow-molding machines are divided into two types: (1) rotary type blow-molding machine, and (2) linear type blow-molding machine. Good kinematic characteristics of mold clamping mechanism is the goal pursued by manufacturers of blow-molding machine. Traditionally, the mold clamping mechanism has only one dead-position configuration for the mold in the closed position. When the mold is in the open position, the mold clamping mechanism does not have dead-position configuration. This study focuses on the design of mold clamping mechanisms with two dead-position configurations when the mold is in

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Zhao, Qi Ping, Li Sun, Zi Gang Zhu, and Guang Chen Chen. "Research on Kinematics and Trajectory Planning for 6-DOF Industrial Robot." Advanced Materials Research 823 (October 2013): 345–48. http://dx.doi.org/10.4028/www.scientific.net/amr.823.345.

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The industrial robot is a typical electromechanical integration equipment constituted by operating machine, controller, servo drive system and the detection of sensing device. It is one of the most common industrial robots in the industrial field, which makes it work in almost any track or angle. This paper mainly presents the research on kinematics and trajectory planning for 6-DOF industrial robot. This study has finished the linear interpolation and arc interpolation in the Cartesian space. According to the advantages and disadvantages, this paper proposes the method of quadratic interpolat

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Wang, Gui He, Tian Biao Yu, and Wan Shan Wang. "Dynamics Simulation of Automatic Capsule Filling Machine with ADAMS." Advanced Materials Research 403-408 (November 2011): 5126–30. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.5126.

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Automatic capsule filling machine is the key filling equipment for pharmaceutical capsule preparations. Taking NJP3400 type of capsule filling machine as an example, we built its geometric model with Pro/E, with the interface module called mechpro of PRO-ADAMS, the model can be imported into ADAMS software and then research into the kinematics simulation of the machine based on its motion parameters and structure. The machine’s strength, displacement, acceleration and the association of these parameters is also analyzed. The results show that the ADAMS software can optimize the machine’s motio

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Толстошеев, Андрей, Andrey Tolstosheev, Вячеслав Татаринцев, and Vyacheslav Tatarincev. "STRUCTURAL ANALYSIS OF ROBOT MACHINE MECHANISMS WITH PARALLEL KINEMATICS." Bulletin of Bryansk state technical university 2017, no. 1 (2017): 33–43. http://dx.doi.org/10.12737/24889.

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Robot machines with parallel kinematics belong to a new generation of machine-tools. The properties of these mechatronic machines are defined to a greater extent by a structure of their actuating lever mechanisms of a parallel structure (MPS). The purpose of this work is a development of the procedure for a structural analysis of MPS and the assessment of its efficiency. The following problems are under solution: a critical analysis of a problem state; a procedure development and check of its operational capability; a procedure application for certain structures of robot machines. By means of

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Fan, Jin Wei, Xiao Feng Wang, and Yun Li. "Research on Analytical Method of CNC Machine Tool Precision Recession." Applied Mechanics and Materials 159 (March 2012): 213–17. http://dx.doi.org/10.4028/www.scientific.net/amm.159.213.

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The focus of this paper is to find a new method analyzing the reasons of CNC machine tool precision recession. The modeling of the movement error of CNC machine tool is one of the most important problem for kinematics designing and accuracy analysis. In this dissertation, this study analyzes the six movement error parameters of guide and the model of the guide which including foundation deformation, material’s natural ageing and way rub has been established. A detailed example is given for the modeling precision recession of 3-axis CNC machine tool.

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Guo, Jian Ye, Zhong Qi Sheng, and Liang Zhao. "The Error Compensation Strategy of 3-TPT Parallel Machine Tool Based on Semi-Closed Loop Control." Advanced Materials Research 321 (August 2011): 176–79. http://dx.doi.org/10.4028/www.scientific.net/amr.321.176.

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This paper took a kind of 3-TPT Parallel Machine Tool (PMT) as the object of research; it mainly introduced the process of establishing the compensation strategy for this PMT. Firstly the kinematics equation of this PMT was established on the basis of kinematics analysis, the results showed that the kinematics equation of this PMT have characteristics that are simple calculation, explicit expression and unique solution. Then according to the structural characteristics and the results of kinematics analysis, the error compensation strategy of feedback correction type with the semi-closed loop c

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Kazerounian, Kazem. "From Mechanisms and Robotics to Protein Conformation and Drug Design." Journal of Mechanical Design 126, no. 1 (2004): 40–45. http://dx.doi.org/10.1115/1.1644554.

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The systematic study of kinematics can be traced to the writings of the ancient Greeks, Egyptians, Romans and Persians as far back as 500 B.C. For many centuries kinematics (along with geometry) was regarded as one of the basic sciences that explained observed physical phenomena and was used to engineer machines. Though it may seem unlikely, kinematics (in particular, robot kinematics) can significantly contribute to our understanding of biological systems and their functions at the microscopic level and to the engineering of new diagnostic tools, treatments, and drugs for a variety of disease

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Zhao, Xiao Xu, Ya Dong Gong, and Qiang Yao. "Research on Hard Rock Tunnel Boring Machine Based on Digital Mockup." Applied Mechanics and Materials 668-669 (October 2014): 240–43. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.240.

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A digital mockup of hard rock tunnel boring machine was built in order to study the design method of these large equipments. Technology of digital mockup is introduced and the application background and practical requirement of tunnel boring machine has been discussed in this paper. The kinematics model and FEM model were built based on this digital mockup. The results of simulation experiment can be used to provide pre-feasibility validation and optimization of the equipment.

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Yao, Zhuang, Dong Yu, Jun Feng Tian, Liao Mo Zheng, and Yi Hu. "Research on the Programming Method Based Process Planning and Kinematics for Mill-Turn Machine." Advanced Materials Research 472-475 (February 2012): 2100–2106. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.2100.

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With manufacturing industry tending to high-mix low-volume production, the turn-mill machining technology has recently received much attention. This research proposes the programming method using process planning and kinematic based on the existing problems during the course of the programming for the mill-turn machine. Firstly, through computing the volume of removal shape on the cylindrical blank shape, dividing the machining process for the spindles. Then recognizing the turning and milling process and computing their removal shape for obtaining tool path. According to complex configuration

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Wang, Hui Liang, Yu Quan Xiong, Jian Jun Yang, and Kai Xu. "Research on Evaluation Method of CNC Gear Form Grinding Processing Performance." Applied Mechanics and Materials 635-637 (September 2014): 1944–47. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.1944.

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To analyze the machining performance of grinding machine and improve the quality of tooth surface, this paper proposes an integrated model of processing performance evaluation of computer numerical control gear grinding machine. Based on the gear profile grinding machine kinematics principles, the topology modification formulas of tooth surface were deduced. Calculated the process capability index according to experimental data and found that the tooth surface errors were followed normal distribution. The main reason of formation errors was analyzed by cause and effect diagram. Finally, the va

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Liu, Hong Jun, Jing Yu Cao, and Ji Bin Zhao. "Research of the Tool Orientation Optimization with Kinematical Constraints." Advanced Materials Research 712-715 (June 2013): 2143–48. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.2143.

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Drastic change of the tool axis vector for five-axis CNC machining due to avoid global interference, proposed gentle forward, over-backward correction method to optimize the tool axis vector. Established a machine tool axis of rotation angular velocity constraints, and feed coordinate system, through the feed coordinate system adjust the inclination angle and swing angle of the existing tool axis vector to make the tool axis vector change between each adjacent cutter contact points satisfy the machine axis of rotation kinematics constraints and to ensure the continuity of feed rate during proc

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Yong, Jiang. "Research on the Kinematics Simulation of Out-Moving Jaw Crusher Based on Nastran." Applied Mechanics and Materials 433-435 (October 2013): 63–66. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.63.

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In this paper, out-moving jaw crusher machine is regarded as the research object and we established the simulation model of virtual prototype based on Nastran. Through the simulation analysis of the movement process, trajectories of moving jaw side plate and a movable jaw toggle plate and related parameters were obtained and compared and verify the simulation model and theory model. The results show that: the simulation model reflects the motion characteristics of the theoretical model well. So it provides theoretical reference for improvement of dynamic performance analysis and structure desi

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Li, Chuan Jun, Qiang Liu, and Huan Liu. "Research and Implementation of Tool Space Compensation Technology of Five Axis CNC Machine." Advanced Materials Research 945-949 (June 2014): 1651–56. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.1651.

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This paper analyzes the structure and classification of five-axis CNC machine, According to the nonlinear error analysis, tool center point and put heart point location model is established and derived the space of five-axis CNC machine tool cutting tool length compensation algorithm formula;Combined with two-dimensional CNC machine tool compensation principle and Kinematics Transform Algorithm (KTA) formula the same radius compensation algorithm formula is deduced, and within the scope of linear error analysis verified the result of the algorithm.Cutter compensation technology provides a meth

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Wu, Xiao Wei, and Chuan Guang Leng. "The Inverse Kinematics Analysis and Simulation of the Special Five Bar Cutting Mechanism for the Ellipse Section Shield." Advanced Materials Research 562-564 (August 2012): 568–72. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.568.

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The hybrid driven special five bar mechanism is applied to cutting mechanism for the novel ellipse section shield machine. Based on the rod-group method, inverse kinematics of the special five-bar mechanism are analyzed and mathematics models of inverse kinematics are set up in order to obtain the equations and relations of position, velocity and acceleration between output motions and input motions. Some characteristic curves ofθP andθ4 are obtained through inverse kinematics analysis and the computer emulation, meanwhile the results of simulation proves the accuracy of the ideas in this pape

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