The Creative Design of Injector Clamping Mechanism

2011 ◽  
Vol 418-420 ◽  
pp. 2166-2169
Author(s):  
Wan Chun Zhou ◽  
Dong Min Liu
Keyword(s):  
Topological Structure ◽  
Kinematic Chain ◽  
Kinematics And Dynamics ◽  
Dynamics Analysis ◽  
Connecting Rod ◽  
Design Constraints ◽  
Kinematic Chains ◽  
Structure Characteristics ◽  
Comprehensive Theory ◽  
Design Requirements

Abstract. Analysis of a certain topological structure characteristics of clamping mechanism of injection machine, according to general principles, converts it into only containing Deputy General of the connecting rod and rotating chain. Bodies comprehensive theory of numbers after distribution combined with rod classes are general Atlas of kinematic chain. After identifying design constraints, on the redistribute members and turn the pair, you can get all man foot design requirements of viable specific Atlas of kinematic chains. Then every possible specific kinematic chain materialized to the schematic diagram of mechanism. Designers are on this basis through the kinematics and dynamics analysis to determine the best new clamping mechanism of injection machine.

Innovative Design Based on Prototypes of the Main Mechanism of Table Lamp

2012 ◽  
Vol 198-199 ◽  
pp. 189-192
Author(s):  
Wan Chun Zhou ◽  
Jian Jun Lu
Keyword(s):  
Topological Structure ◽  
Kinematic Chain ◽  
Main Mechanism ◽  
Schematic Diagram ◽  
Design Constraints ◽  
Innovative Design ◽  
Kinematic Chains ◽  
Structure Characteristics ◽  
Practical Design ◽  
Number Synthesis

On the basis of analyzing the topological structure of an original mechanism, it leads to the generalized kinematic chain meeting the same topological structure characteristics of the original mechanism in accordance with the generalized principle of mechanism, number synthesis of kinematic chain and compound hings. Allocation of ground links and performing links in the kinematic chain can get all feasible specialized kinematic chains while considering practical design constraints. In the final step, concrete schematic diagram of mechanism being restored from specialized kinematic chains leads to a series of new mechanism different from the original one. Designers ascertain appropriate new mechanism after selection and analysis.

A decoupled 2-DOF flexure-based micropositioning stage with large travel ranges

Robotica ◽  
2013 ◽  
Vol 32 (5) ◽  
pp. 677-694 ◽  
Author(s):  
Xiantao Sun ◽  
Weihai Chen ◽  
Rui Zhou ◽  
Wenjie Chen ◽  
Jianbin Zhang
Keyword(s):  
Topological Structure ◽  
Natural Frequencies ◽  
Mechanical Performance ◽  
Theoretical Models ◽  
Kinematics And Dynamics ◽  
Dynamics Analysis ◽  
Kinematic Chains ◽  
Element Simulation ◽  
Prismatic Joints ◽  
Coupling Error

SUMMARYIn this paper, a new flexure-based micropositioning stage (FMPS) is proposed to achieve decoupled XY translational motions and large travel ranges. The stage consists of four independent kinematic chains, each comprising two flexure-beam prismatic joints. The mechanism with such a special topological structure enables the motions of the platform strictly along XY axes and minimizes the parasitic rotation in theta axis. The kinematics and dynamics analysis of the mechanism are conducted to evaluate the performance of the mechanism in terms of travel range, parasitic motions, linearity, as well as natural frequency. According to the developed models, a parameter optimization of the mechanism is performed under the condition of the maximum travel range. The finite element simulation is carried out to examine the mechanical performance and the theoretical models. The experimental results show that the proposed FMPS possesses a workspace of 600 × 600 μm2, a relative coupling error of 0.6%, and the natural frequencies of 209.7 Hz and 212.4 Hz for the first two modes.

The Innovative Design of Airliner Front Landing Gear Mechanism

2012 ◽  
Vol 433-440 ◽  
pp. 1519-1522 ◽  
Author(s):  
Wan Chun Zhou ◽  
Jing Wang
Keyword(s):  
Topological Structure ◽  
Mechanical Device ◽  
Special Design ◽  
Design Constraints ◽  
Innovative Design ◽  
Kinematic Chains ◽  
Original Product ◽  
Gear Mechanism ◽  
Number Synthesis ◽  
Synthesis Of Mechanism

On the basis of the existing mechanism, we can induce the topological structure of the original mechanism. By using the number synthesis of mechanism, we can find the link assortment which can satisfy topological structure of the original mechanism. By using permutation, we can obtain the generalized kinematic chains. According to the special design constraints, after appointing each link and kinematic pair, we can gain all the suitable feasible specialized chains. Then making a converse reasoning based on the generalized principle, we will finally integrate the schematic diagram of mechanism suitable for our design purpose. Therefore, if we make a kinematic and a dynamic analysis on mechanism based on this, after structural designing, we can find a new mechanical device whose performance is up to or even superior to that of the original product.

Structural Analysis of Mechanism with Compound Hinges in Ordinal Single Opened Chain Theory

2011 ◽  
Vol 418-420 ◽  
pp. 2050-2054
Author(s):  
Hong Bing Xin ◽  
Qiang Huang ◽  
Yue Qing Yu
Keyword(s):  
Structural Analysis ◽  
Structure Factor ◽  
Kinematic Chain ◽  
Kinematics And Dynamics ◽  
Kinematic Chains ◽  
Dual Color ◽  
Chain Theory ◽  
Topology Graph

The coupling degree and structure factor of mechanism are the important parameters for the research of principle of mechanism structure, kinematics and dynamics in the ordinal single opened chain method, This article presents the algorithm of coupling degree for the kinematic chain with compound hinges on the basis of that for the kinematic chain without compound hinges and the dual-color topology graph, through which the mechanism with compound hinges can be decomposed into basic kinematic chains, the correctness of the algorithm has been verified by the practical example.

Coupling Degree of Mechanism and Its Application

2006 ◽  
Author(s):  
Jing Xiong ◽  
Ting-Li Yang ◽  
Xiangdong Yang ◽  
Dongchao Yang ◽  
Ken Chen
Keyword(s):  
Dynamic Analysis ◽  
Topological Structure ◽  
Parallel Mechanism ◽  
Kinematics And Dynamics ◽  
Parallel Mechanisms ◽  
Kinematic Chains ◽  
Unified Modeling

The kinematic and dynamic analysis of an spatial multi-loop mechanism especially parallel mechanism is significant but always complex. Based on the topological structure of mechanisms, this paper proposes the concept of coupling degree of mechanism systematically, and applies it to the criterion of basic kinematic chains(BKCs) and other problems. The relation between topology, kinematics and dynamics of parallel mechanisms is established, and then it is achieved to quantitatively describe the analysis complexity of a parallel mechanism and to obtain its simplest solving path, according to its topological structure. The preliminary method for unified modeling of the topology, kinematics and dynamics of parallel mechanisms is proposed, using BKC as the basic analysis unit. Some suggestions for optimization and selective preference of parallel mechanisms are also presented.

Innovative Design Based on Topological Analysis of Rope-Type Long-Link Grippers

2010 ◽  
Vol 29-32 ◽  
pp. 1274-1278
Author(s):  
Wan Chun Zhou ◽  
Tong Zhou
Keyword(s):  
Topological Analysis ◽  
Kinematic Chain ◽  
Structural Type ◽  
Similar Function ◽  
Specific Design ◽  
Topological Map ◽  
Design Constraints ◽  
Innovative Design ◽  
Kinematic Chains ◽  
Chain Maps

In this thesis, the author first analyzed the topological structure of the original mechanism. On this basis, the topological map and a series of kinematic chain maps which meet the requirements have been constructed with graph theory. Then the types of various components were designated based on specific design constraints, and generalized kinematic chains were turned into the new mechanism having the same or similar function with the original mechanism. Designers can value them comprehensively and screen out the good structural type. The method is regarded as a workable and efficient method for development and design of new products.

Kinematic Study on a New Coil Winder of RSPC Type

2010 ◽  
Vol 156-157 ◽  
pp. 1488-1491 ◽  
Author(s):  
Wen Hsiang Hsieh ◽  
Chia Heng Tsai
Keyword(s):  
Design Constraints ◽  
Kinematic Simulation ◽  
Kinematic Chains ◽  
Kinematic Study ◽  
Adams Software ◽  
Design Requirements ◽  
Number Synthesis

The objective of this paper aims at investigating the feasibility of new coil winders with a spatial RSPC mechanism by conducting kinematic simulation. First, the design requirements and design constraints are specified based on the kinematics characteristic of coil winders. Then, the (4, 4) kinematic chains are obtained by number synthesis, and the atlas of feasible chains is generated. After that, the atlas of specialized feasible chains is found. Finally, new designs are obtained through the particularization process. In addition, an illustrated example of the RSPC mechanismselected from the new designs is given, and its feasibility is verified by performing kinematic simulation using ADAMS software. The result shows that it can meet the motion requirement of coil winders.

Research on Engineering Materials with New Method of Type Configuration of Metamorphic Mechanism

2014 ◽  
Vol 540 ◽  
pp. 143-150
Author(s):  
Jia Li ◽  
Jiang Yi Kong ◽  
Han Yuan Liao ◽  
Yu Hou ◽  
Liang Bo Sun
Keyword(s):  
Numerical Calculation ◽  
Kinematic Chain ◽  
Degree Of Freedom ◽  
New Method ◽  
Connecting Rod ◽  
Topological Graph ◽  
Kinematic Chains ◽  
Metamorphic Mechanism ◽  
Engineering Materials

The fomula between the numbers of link of kinematic chain,the numbers of prismatic pair,the numbers of connecting rod for each unit,ring numbers of kinematic chain,and degree of freedom of mechanism with 3 degree of freedom has been introduced in this paper by means of method of numerical calculation,the configuration of kinematic chain with F=2 also has been introduced,and an example of systhesis of metamorphic mechanism for this kinematic chain have been listed the kinematic chain and its isomers for these mechanism with 3 degree of freedom have been studied by using the method of topological graph,the kinematic chains and its isomers and have been obtained for 28 types of mechanism which have 3 degree of freedom and its numbers of link is less than 10,this method is usful for type systhesis of metamorphic mechanism. The study will greatly promote the mechanism used in engineering materials.

Structural Synthesis of Spatial 4-Link Mechanisms for Coil Winding

2013 ◽  
Vol 423-426 ◽  
pp. 1809-1812 ◽  
Author(s):  
Wen Hsiang Hsieh ◽  
Chih Yang Tseng
Keyword(s):  
Structural Synthesis ◽  
Design Constraints ◽  
Kinematic Chains ◽  
Link Type ◽  
Design Requirements ◽  
Number Synthesis ◽  
Coil Winding

The purpose of this paper aims at performing the structural synthesis for coil winders of the spatial 4-link type, therefore the atlas of new designs can be obtained. First, the design requirements and design constraints are specified based on the kinematics characteristic of coil winders. Then, the (4, 4) kinematic chains are obtained by number synthesis, and the atlas of feasible chains is generated. After that, the atlas of specialized feasible chains is found. Finally, all new designs are obtained through the particularization process, and two new design are found in this study.

scholarly journals Kinematics and Dynamics Analysis of a 3-DOF Upper-Limb Exoskeleton with an Internally Rotated Elbow Joint

2018 ◽  
Vol 8 (3) ◽  
pp. 464 ◽  
Author(s):  
Xin Wang ◽  
Qiuzhi Song ◽  
Xiaoguang Wang ◽  
Pengzhan Liu
Keyword(s):  
Upper Limb ◽  
Elbow Joint ◽  
Kinematics And Dynamics ◽  
Dynamics Analysis ◽  
Upper Limb Exoskeleton
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