A Novel Structure Design of 4-DOF Spatial Compliant Parallel Manipulator

2011 ◽  
Vol 474-476 ◽  
pp. 1069-1074
Author(s):  
Da Chang Zhu ◽  
Qi Hua Gu ◽  
Liang Wang ◽  
Fan Xiao
Keyword(s):  
Parallel Manipulator ◽  
Design Method ◽  
Structure Design ◽  
Geometrical Constraint ◽  
Ansys Software ◽  
Traditional Design ◽  
Novel Structure

A novel type of 4-RPUR spatial compliant parallel manipulator which named whole compliant parallel manipulator (WCPM) is presented in this paper. Compared with traditional design method, a novel 4-RPUR type spatial compliant parallel manipulator which satisfy the geometrical constraint conditions in spatial is proposed. By using ANSYS software, the proposed two kinds of compliant parallel manipulator are analyzed. The effectiveness of the proposed method is verified by simulation and experiments.

Finit Element Analysis and Optimum Design of Time-Sharing 4WD Vehicle Main Reducer

2012 ◽  
Vol 246-247 ◽  
pp. 692-696 ◽  
Author(s):  
F. Hu ◽  
L.Q. Chen ◽  
B. Qi ◽  
W.W. Chen
Keyword(s):  
Design Method ◽  
Structure Design ◽  
Time Sharing ◽  
Ansys Software ◽  
Element Analysis ◽  
Traditional Design ◽  
Case System ◽  
Transfer Case ◽  
Bearing Load ◽  
Complicated Model

By carrying on the stress and transform analysis of the box of a kind of main reducer which was self— designed and manufactured for vehicles, by ROMAX modeling get accurate bearing load and conducting ANSYS finite element analysis. it is shown that structure design of the main reducer box is very important for the intension capability of the box, and for the transmission functions of the main reducer. The hidden trouble of the main reducer transmission due to the designers was solved, which couldn’t estimate the transform of main reducer box by traditional design method, and provided the necessary basis for further optimizing and ameliorating the whole transfer case system. By using the UG software we constructed a complicated model of the box, and carried on a series of accurate intension and fatigued analyses for the model by using ANSYS software.

A Novel Structure Design Method Based on Knowledge Template

2012 ◽  
Vol 159 ◽  
pp. 18-22
Author(s):  
Rui Song Jiang ◽  
Xin Fa Chen ◽  
Da Yong Feng ◽  
Feng Jun Wang
Keyword(s):  
Turbine Blade ◽  
Design Process ◽  
Investment Casting ◽  
Design Method ◽  
Structure Design ◽  
Design System ◽  
Construction Methods ◽  
Novel Structure ◽  
Base Design

In this study, a novel structure design method based on knowledge template was prompted. The notion and construction methods of knowledge template were introduced. Moreover, the knowledge template based design process was represented. The knowledge templates of investment casting die bases of turbine blade were established and a design system for die base was developed. The system provides designers with a semi-automated approach for the die base design. Finally, several sample applications for investment casting die base of turbine blade were presented for demonstration.

scholarly journals A structure design method for compliant parallel manipulators with actuation isolation

2016 ◽  
Vol 7 (2) ◽  
pp. 247-253 ◽  
Author(s):  
Guangbo Hao ◽  
Xianwen Kong
Keyword(s):  
Parallel Manipulator ◽  
Design Method ◽  
Parallel Manipulators ◽  
Structure Design ◽  
Transverse Motion ◽  
Linear Actuators ◽  
Design Case ◽  
Manipulator Design ◽  
Cross Axis ◽  
Effective Design

Abstract. Since precise linear actuators of a compliant parallel manipulator suffer from their inability to tolerate the transverse motion/load in the multi-axis motion, actuation isolation should be considered in the compliant manipulator design to eliminate the transverse motion at the point of actuation. This paper presents an effective design method for constructing compliant parallel manipulators with actuation isolation, by adding the same number of actuation legs as the number of the DOF (degree of freedom) of the original mechanism. The method is demonstrated by two design case studies, one of which is quantitatively studied by analytical modelling. The modelling results confirm possible inherent issues of the proposed structure design method such as increased primary stiffness, introduced extra parasitic motions and cross-axis coupling motions.

A New Structure Design Method for Improve Modular Joint Output Performance in Modular Robot

2014 ◽  
Vol 635-637 ◽  
pp. 1299-1302 ◽  
Author(s):  
Xiao Li ◽  
Han Xu Sun ◽  
Ying Wen Tang ◽  
Jing Zhou Song
Keyword(s):  
Design Method ◽  
Structure Design ◽  
Design Parameters ◽  
Modular Robot ◽  
Positioning Accuracy ◽  
Brushless Dc ◽  
Output Performance ◽  
Output Torque ◽  
Novel Structure ◽  
Dc Servomotor

A novel structure design method to improve the output performance in course of modular robot is presented in this paper. The new design parameter of modular joint is defined based on analysis of existing joint. Output torque and Max speed is increased by means of different Brushless DC-Servomotor and harmonic reducer in limited interspace. The repeated positioning accuracy is not reduced when output torque and Max speed are increased. And parts of the process parameters is improved. The new design parameters show that the design method is feasible.

Design of Origami Sheets for Foldable Object Fabrication

2012 ◽  
Author(s):  
Dongping Deng ◽  
Yong Chen
Keyword(s):  
Design Method ◽  
Soft Materials ◽  
Structure Design ◽  
Test Cases ◽  
Future Design ◽  
Novel Structure ◽  
Scale Levels ◽  
Multiple Materials ◽  
Reconfigurable Structures ◽  
Silicon Molding

Reconfigurable structures that are enabled through the integration of multiple materials are important for future design and manufacturing practice. We investigate one of such reconfigurable structures — an origami sheet, which can be designed based on a 3D object and unfolded into a 2D sheet with complex creases. A fabrication approach based on a hybrid manufacturing process by integrating layer-based additive manufacturing and silicon molding techniques is developed. Related challenges on designing creases for given folding requirements and the related material properties are discussed. A novel structure design is presented to ensure the fabricated creases that are in soft materials can be folded and unfolded without failures. The design method can be applied to different scale levels. The origami sheets for test cases in different complexity have been tested. The experimental results illustrate that the designed and fabricated origami sheets can be folded and used for product components with reconfigurable shapes.

Finit Element Analysis of Time-Sharing 4WD Vehicle Transfer Case Based on Romax

2011 ◽  
Vol 80-81 ◽  
pp. 832-836
Author(s):  
Yu Ming Wang ◽  
Min Feng Huang ◽  
Quan Zheng ◽  
Lei Lu ◽  
Yu Chen
Keyword(s):  
Design Method ◽  
Structure Design ◽  
Time Sharing ◽  
Element Analysis ◽  
Traditional Design ◽  
Transfer Case ◽  
Bearing Load ◽  
Complicated Model ◽  
Case Transmission ◽  
Case Based

By carrying on the stress and transform analysis of the box of a kind of transfer case which was self-designed and manufactured for vehicles,by ROMAX modeling get accurate bearing load and conducting ANSYS finite element analysis. it is shown that structure design of the transfer case box is very important for the intension capability of the box,and for the transmission functions of the transfer case.The hidden trouble of the transfer case transmission due to the designers was solved,which couldn’t estimate the transform of transfer case box by traditional design method,and provided the necessary basis for further optimizing and ameliorating the whole transfer case system.We constructed a complicated model of the box by using the UG software,and carried on a series of accurate intension and fatigued analyses for the model by using AN SYS software.

Integration of Topological and Functional Optimization in Design for Additive Manufacturing

2014 ◽  
Author(s):  
Yunlong Tang ◽  
Jean-Yves Hascoet ◽  
Yaoyao Fiona Zhao
Keyword(s):  
Additive Manufacturing ◽  
Design Method ◽  
Complex Structure ◽  
Structure Design ◽  
Design Methods ◽  
Topological Optimization ◽  
Future Research ◽  
Focused Attention ◽  
Traditional Design ◽  
Gradient Density

Additive manufacturing (AM) technologies has brought unprecedented freedom to the fabrication of functional parts with high complex, multi-material and gradient density structure. However, currently only traditional design methods are available for AM design process, which do not take full advantage of AM capabilities. Therefore, a new design method with the consideration of all aspects of AM advantages is urgently in need. A detailed literature review on traditional design methods is presented with focused attention on the potential of using these methods to design functional parts for additive manufacturing processes. Based on thorough understanding and comparison of current structure design methods, a new design approach that integrates topological and functional optimizations for AM products is presented. With this method, an essential link is established between topological optimization result and various functional parameters of complex structure. Parts can be designed in multi levels for multi functions simultaneously. This design method provides an important foundation for future research on designing AM products with improved multiple functions and optimized topology.

scholarly journals Multi-Branch Cable Harness Layout Design Based on Genetic Algorithm with Probabilistic Roadmap Method

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Yingfeng Zhao ◽  
Jianhua Liu ◽  
Jiangtao Ma ◽  
Linlin Wu
Keyword(s):  
Genetic Algorithm ◽  
Topological Structure ◽  
Design Method ◽  
Route Planning ◽  
Layout Design ◽  
Structure Design ◽  
Prototype System ◽  
Cable Harness ◽  
Probabilistic Roadmap ◽  
Probabilistic Roadmap Method

AbstractCurrent studies on cable harness layouts have mainly focused on cable harness route planning. However, the topological structure of a cable harness is also extremely complex, and the branch structure of the cable harness can affect the route of the cable harness layout. The topological structure design of the cable harness is a key to such a layout. In this paper, a novel multi-branch cable harness layout design method is presented, which unites the probabilistic roadmap method (PRM) and the genetic algorithm. First, the engineering constraints of the cable harness layout are presented. An obstacle-based PRM used to construct non-interference and near to the surface roadmap is then described. In addition, a new genetic algorithm is proposed, and the algorithm structure of which is redesigned. In addition, the operation probability formula related to fitness is proposed to promote the efficiency of the branch structure design of the cable harness. A prototype system of a cable harness layout design was developed based on the method described in this study, and the method is applied to two scenarios to verify that a quality cable harness layout can be efficiently obtained using the proposed method. In summary, the cable harness layout design method described in this study can be used to quickly design a reasonable topological structure of a cable harness and to search for the corresponding routes of such a harness.

The Analysis on Manufacture Cost of Fire Robot Based on Modular Design

2014 ◽  
Vol 716-717 ◽  
pp. 1518-1521
Author(s):  
Shu Fang ◽  
Yan Xu ◽  
Fei Dong
Keyword(s):  
Modular Design ◽  
Design Method ◽  
Working Environment ◽  
Activity Based Costing ◽  
Traditional Design ◽  
Different Types ◽  
Function Modules ◽  
Flexible Manufacture ◽  
Technical Platform ◽  
General Technical

The manufacture of fire robot has characteristics such as different types and piece production, and flexible manufacture and cost control of the fire robot must be considered due to these characteristics. In this paper, the similarity of fire robot’s working environment was analyzed, The demand of chassis’s adaptability and the method using general technical platform were discussed with the thinking of modular design, and new series fire robots which composed of the general platform and different function modules were proposed, and the manufacture cost of traditional design method and modular design method were compared in using the activity-based costing method, and under the new design method the manufacture cost were decreased extremely.

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