Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643538
Jian Ding, Jianguang Li, Yingxue Yao, Chuntian Xu, H. Jing
The pose (position and orientation) errors joint-clearance-due influences the accuracy of 6- dof parallel manipulator significantly. In this sense the error modeling approach becomes imperative. In this paper, a new statistical model which based on forward kinematics is presented. Firstly, the structure of joint clearance and 6-dof parallel manipulator is analyzed and simplified. The forward kinematics process is applied to identify the pose of the manipulator for sample set of link lengths and corresponding pose error can be obtained subsequently, then the statistical method is used to investigate the characters of pose errors. Finally the contributions of the research are highlightened by means of comparative simulations.
{"title":"A forward kinematics based statistical method for the pose errors of a 6-dof parallel manipulator","authors":"Jian Ding, Jianguang Li, Yingxue Yao, Chuntian Xu, H. Jing","doi":"10.1109/ISAM.2013.6643538","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643538","url":null,"abstract":"The pose (position and orientation) errors joint-clearance-due influences the accuracy of 6- dof parallel manipulator significantly. In this sense the error modeling approach becomes imperative. In this paper, a new statistical model which based on forward kinematics is presented. Firstly, the structure of joint clearance and 6-dof parallel manipulator is analyzed and simplified. The forward kinematics process is applied to identify the pose of the manipulator for sample set of link lengths and corresponding pose error can be obtained subsequently, then the statistical method is used to investigate the characters of pose errors. Finally the contributions of the research are highlightened by means of comparative simulations.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123301105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643456
Daniël Telgen, Leo van Moergestel, E. Puik, Arjen van Zanten, Ammar Abdulamir, J. Meyer
Grid Manufacturing (GM) is a new production paradigm, based upon the use of standardized and modular Reconfigurable Manufacturing Systems (RMS). In GM all systems have a virtual counterpart that actsautonomously, this includes both complete manufacturing systems and the products. The control system required for this approach is based upon a distributed and hybrid architecture, using agent technology. An important aspect in the paradigm is the product manufacturing description. This paper introduces the concept of an architecture where the control of the manufacturing is abstracted from the product manufacturing blueprint. A product is delineated step by step by specific services in the grid. The proposed system increases flexibility twofold, first by enabling abstraction of product's parts and second by dynamically using manufacturing means.
{"title":"Agile product manufacturing by dynamically generating control instructions","authors":"Daniël Telgen, Leo van Moergestel, E. Puik, Arjen van Zanten, Ammar Abdulamir, J. Meyer","doi":"10.1109/ISAM.2013.6643456","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643456","url":null,"abstract":"Grid Manufacturing (GM) is a new production paradigm, based upon the use of standardized and modular Reconfigurable Manufacturing Systems (RMS). In GM all systems have a virtual counterpart that actsautonomously, this includes both complete manufacturing systems and the products. The control system required for this approach is based upon a distributed and hybrid architecture, using agent technology. An important aspect in the paradigm is the product manufacturing description. This paper introduces the concept of an architecture where the control of the manufacturing is abstracted from the product manufacturing blueprint. A product is delineated step by step by specific services in the grid. The proposed system increases flexibility twofold, first by enabling abstraction of product's parts and second by dynamically using manufacturing means.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125277725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643513
X. D. Wang, Y. Luo, X. W. Zhang, L. Teng, W. M. Yang, L. Chen
To deploy precision assembly equipments quickly for manufacturing with easy implementation of the hardware and software, simple modularized assembly system architecture with functional oriented modules was established on the basis of the developed assembly equipments. The related key technology, including the equipments' system architecture and technological approaches in achieving manipulation and assembly of the parts were summarized. Some of the technological approaches, including machine vision based measurement and handling of the miniature parts, system calibration for precise assembly were described with the functional modules.
{"title":"Precision equipments for assembly of miniature devices: System architecture and technological approaches","authors":"X. D. Wang, Y. Luo, X. W. Zhang, L. Teng, W. M. Yang, L. Chen","doi":"10.1109/ISAM.2013.6643513","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643513","url":null,"abstract":"To deploy precision assembly equipments quickly for manufacturing with easy implementation of the hardware and software, simple modularized assembly system architecture with functional oriented modules was established on the basis of the developed assembly equipments. The related key technology, including the equipments' system architecture and technological approaches in achieving manipulation and assembly of the parts were summarized. Some of the technological approaches, including machine vision based measurement and handling of the miniature parts, system calibration for precise assembly were described with the functional modules.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126013857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643533
J. Qian, Jun Wang, E. Ferraris, D. Reynaerts
Micro-EDM (μEDM) milling is a well-established micro-manufacturing technique, which offers three-dimensional and flexible machining capabilities for structuring electrically conductive difficult-to-machine materials. There has been considerable progress in micro-manufacturing capabilities by μEDM in recent years. Nevertheless there still exist a few challenges in terms of process accuracy and efficiency, and the achievable shape accuracy in micro-EDM milling is limited to 3-4 microns in vertical direction and 2-3 microns in plane. In order to reach zero-defect manufacturing with this micro-sparking technique, a holistic approach for precision micro-EDM milling is pursued at Leuven University. To improve the overall performance of the micro-EDM milling process, various upgrading has been carried out on a SARIX® machine, which includes monitoring and controlling of the stability of the sparking process (gap variation and energy distribution etc.), wear compensation of the tool-electrode, and on-machine metrology. Preliminary experiments have been carried out with promising results, and further system integration and application on industrial demonstrators are in progress.
{"title":"A holistic approach for zero-defect micro-EDM milling","authors":"J. Qian, Jun Wang, E. Ferraris, D. Reynaerts","doi":"10.1109/ISAM.2013.6643533","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643533","url":null,"abstract":"Micro-EDM (μEDM) milling is a well-established micro-manufacturing technique, which offers three-dimensional and flexible machining capabilities for structuring electrically conductive difficult-to-machine materials. There has been considerable progress in micro-manufacturing capabilities by μEDM in recent years. Nevertheless there still exist a few challenges in terms of process accuracy and efficiency, and the achievable shape accuracy in micro-EDM milling is limited to 3-4 microns in vertical direction and 2-3 microns in plane. In order to reach zero-defect manufacturing with this micro-sparking technique, a holistic approach for precision micro-EDM milling is pursued at Leuven University. To improve the overall performance of the micro-EDM milling process, various upgrading has been carried out on a SARIX® machine, which includes monitoring and controlling of the stability of the sparking process (gap variation and energy distribution etc.), wear compensation of the tool-electrode, and on-machine metrology. Preliminary experiments have been carried out with promising results, and further system integration and application on industrial demonstrators are in progress.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132364308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643476
Shuai Zheng, Jun Hong, K. Jia
In this paper an efficient and robust method for Boolean operations on triangulated solids is presented. It is applied to regularized Boolean operations including union, difference, and intersection. This approach is better than other methods because three optimizations have been introduced. First, the constructed topology information improves the data structure from discrete triangles to point indices, face indices, and their connectivity information. Second, the space dividing algorithm has improved the computational complexity from O (m * n) to O (k (log K)). Third, the tessellation has enumerated a number of special triangle-triangle intersection examples, which are then dealt with separately. Finally, this method is implemented by a program written in C++ and OSG. With some examples, this system is proved to be efficient and robust.
{"title":"Boolean operations on triangulated solids","authors":"Shuai Zheng, Jun Hong, K. Jia","doi":"10.1109/ISAM.2013.6643476","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643476","url":null,"abstract":"In this paper an efficient and robust method for Boolean operations on triangulated solids is presented. It is applied to regularized Boolean operations including union, difference, and intersection. This approach is better than other methods because three optimizations have been introduced. First, the constructed topology information improves the data structure from discrete triangles to point indices, face indices, and their connectivity information. Second, the space dividing algorithm has improved the computational complexity from O (m * n) to O (k (log K)). Third, the tessellation has enumerated a number of special triangle-triangle intersection examples, which are then dealt with separately. Finally, this method is implemented by a program written in C++ and OSG. With some examples, this system is proved to be efficient and robust.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132464901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643471
Yao Liu, Yumei Huang, Longyi Zhang, Wen Yan
An analytical method is introduced in the paper for the static characteristics of the cylindrical-spherical joint surfaces, based on fundamental parameters of the joint, and which has validated by the comparison between a case study and experimental results. The results show that this method is correct and feasible.
{"title":"Study on static characteristics of the cylindrical-spherical joint surfaces","authors":"Yao Liu, Yumei Huang, Longyi Zhang, Wen Yan","doi":"10.1109/ISAM.2013.6643471","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643471","url":null,"abstract":"An analytical method is introduced in the paper for the static characteristics of the cylindrical-spherical joint surfaces, based on fundamental parameters of the joint, and which has validated by the comparison between a case study and experimental results. The results show that this method is correct and feasible.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133983604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643498
Zhao Hong, Wu Wenwu, L. Xiaohu, Li Huanfeng
Reasonable bearing preload can sufficiently ensure the good performance of bearing. Traditionally, rigid and constant preloads are used to apply uniform forces on the bearing. However, considering the machining errors, assembly errors and load conditions, the uniform preload actually manifests as a non-uniform load distribution in ball bearing. The work presents a method to analyze the bearing characters under the different preload conditions. Under non-uniform preload the bearing outer ring is rotated at a small angle with respect to inner ring. In this occasion, the stresses and deformations of rolling elements at different azimuth angles diverse from each other. As a result, the bearing stiffness is also different from that under uniform preload. In this paper, the bearing deformation and stiffness under different uniform and non-uniform preloads are analyzed using nonlinear finite element method. The results show that the relationship between axial stiffness and axial preload are nonlinear. The bearing angular stiffness increases nonlinearly with the equivalent moment under non-uniform preload.
{"title":"Stiffness analysis of angular contact ball bearing under non-uniform preload","authors":"Zhao Hong, Wu Wenwu, L. Xiaohu, Li Huanfeng","doi":"10.1109/ISAM.2013.6643498","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643498","url":null,"abstract":"Reasonable bearing preload can sufficiently ensure the good performance of bearing. Traditionally, rigid and constant preloads are used to apply uniform forces on the bearing. However, considering the machining errors, assembly errors and load conditions, the uniform preload actually manifests as a non-uniform load distribution in ball bearing. The work presents a method to analyze the bearing characters under the different preload conditions. Under non-uniform preload the bearing outer ring is rotated at a small angle with respect to inner ring. In this occasion, the stresses and deformations of rolling elements at different azimuth angles diverse from each other. As a result, the bearing stiffness is also different from that under uniform preload. In this paper, the bearing deformation and stiffness under different uniform and non-uniform preloads are analyzed using nonlinear finite element method. The results show that the relationship between axial stiffness and axial preload are nonlinear. The bearing angular stiffness increases nonlinearly with the equivalent moment under non-uniform preload.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131404204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643522
M. Lohtander, E. Jarvenpaa, J. Varis
Nowadays many large companies have outsourced their product design. In such cases, a design subcontractor designs the product on the basis of a list of requirements and the desired property profile. In these circumstances, the actual engineering designer does not know where the product will be manufactured, nor the equipment used in the manufacturing process. This study presents the information required to describe the machine and material resources needed for the development of an analysis method for global automated production in the turret punch press environment. The description of product and device resources and their interconnectedness is the starting point for a method comparison in the development of expenses, production planning and performance optimization. The main research question of this paper is: what are the central boundary conditions required in sheet metal production between machine and materials in the turret punch press environment, with regards to developing capability analysis for the process?
{"title":"Capability of the turret punch press process: Intelligence between design and manufacturing","authors":"M. Lohtander, E. Jarvenpaa, J. Varis","doi":"10.1109/ISAM.2013.6643522","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643522","url":null,"abstract":"Nowadays many large companies have outsourced their product design. In such cases, a design subcontractor designs the product on the basis of a list of requirements and the desired property profile. In these circumstances, the actual engineering designer does not know where the product will be manufactured, nor the equipment used in the manufacturing process. This study presents the information required to describe the machine and material resources needed for the development of an analysis method for global automated production in the turret punch press environment. The description of product and device resources and their interconnectedness is the starting point for a method comparison in the development of expenses, production planning and performance optimization. The main research question of this paper is: what are the central boundary conditions required in sheet metal production between machine and materials in the turret punch press environment, with regards to developing capability analysis for the process?","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116387213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643504
Zhelin Wang, Su-na Yan, Zhihui Qiu, Haotong Zhang
A optimal design method based on intelligent inference is proposed aiming at the existing deficiency such as large design space, low solving efficiency and poor quality caused by many characteristic parameters of complex structural components. By numerical simulation technology and DOE (Design of Experiment), the components are simulated under multi-conditions. The decision table of multidisciplinary simulation data is obtained through the discretization of continuous simulation data by clustering analysis. Then the design parameter characteristics are backtracked to guide the multidisciplinary design optimization of the components by using data mining technology. Finally, this method is verified through a case study on a cylinder head of inline4 engine.
针对复杂结构构件特征参数多导致设计空间大、求解效率低、质量差等缺点，提出了一种基于智能推理的优化设计方法。采用数值模拟技术和DOE (Design of Experiment)对各部件进行了多工况模拟。通过聚类分析对连续仿真数据进行离散化，得到多学科仿真数据的决策表。然后利用数据挖掘技术回溯设计参数特征，指导零部件的多学科设计优化。最后，以某直列发动机气缸盖为例，对该方法进行了验证。
{"title":"An optimal design method for complex structural components based on intelligent inference","authors":"Zhelin Wang, Su-na Yan, Zhihui Qiu, Haotong Zhang","doi":"10.1109/ISAM.2013.6643504","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643504","url":null,"abstract":"A optimal design method based on intelligent inference is proposed aiming at the existing deficiency such as large design space, low solving efficiency and poor quality caused by many characteristic parameters of complex structural components. By numerical simulation technology and DOE (Design of Experiment), the components are simulated under multi-conditions. The decision table of multidisciplinary simulation data is obtained through the discretization of continuous simulation data by clustering analysis. Then the design parameter characteristics are backtracked to guide the multidisciplinary design optimization of the components by using data mining technology. Finally, this method is verified through a case study on a cylinder head of inline4 engine.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121937615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-10-24DOI: 10.1109/ISAM.2013.6643452
Jibin Zhu, Jinhua Zhang, Junkang Guo
As an important component of machine tools, spindle is the end part directly determining the quality of machined surfaces. It is essential to guarantee the spindle rotary accuracy for improving the machining quality. Spindle rotary accuracy is determined by bearing accuracy and other components' geometric error. Firstly, a 5-DOF bearing model is applied to describe the position and orientation deviations between inner ring and outer ring. It is also used to describe bearings' rotational error. Secondly, the distance of curvature centers of inside and outside raceways is calculated when the position and orientation of inner ring changes, in consideration of the dimensioned and form errors of the inner, outer rings and balls. Small Displacements Torsor (SDT) is used to describe machining error of spindle. Finally, geometric factors such as shaft machining error, bearing's preload and the assembly angle are discussed.
{"title":"Research of the influence of geometrical factors on rotary accuracy of high-precision spindle","authors":"Jibin Zhu, Jinhua Zhang, Junkang Guo","doi":"10.1109/ISAM.2013.6643452","DOIUrl":"https://doi.org/10.1109/ISAM.2013.6643452","url":null,"abstract":"As an important component of machine tools, spindle is the end part directly determining the quality of machined surfaces. It is essential to guarantee the spindle rotary accuracy for improving the machining quality. Spindle rotary accuracy is determined by bearing accuracy and other components' geometric error. Firstly, a 5-DOF bearing model is applied to describe the position and orientation deviations between inner ring and outer ring. It is also used to describe bearings' rotational error. Secondly, the distance of curvature centers of inside and outside raceways is calculated when the position and orientation of inner ring changes, in consideration of the dimensioned and form errors of the inner, outer rings and balls. Small Displacements Torsor (SDT) is used to describe machining error of spindle. Finally, geometric factors such as shaft machining error, bearing's preload and the assembly angle are discussed.","PeriodicalId":323666,"journal":{"name":"2013 IEEE International Symposium on Assembly and Manufacturing (ISAM)","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123734878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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