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CAD integrated automatic recognition of weld paths

Tuan Anh Tran, Andrei Lobov, Tord Hansen Kaasa, Morten Bjelland, Ole Terje Midling
2021 The International Journal of Advanced Manufacturing Technology  
AbstractIn this paper, a CAD integrated method is proposed for automatic recognition of potential weld locations in large assembly structures predominantly comprised of weld joints.  ...  The method utilizes spatial analysis of extracted stereolithographic data in combination with available CAD functions to determine whether the accessibility surrounding a given intersection edge is sufficient  ...  The recognition of machining features is in many cases considered a cornerstone to automatic machining [2] . Tool paths can be generated depending on various machining features.  ... 
doi:10.1007/s00170-021-07186-0 fatcat:z5jq6wyko5dk7mlvl3oc2cekdq

Attribute Based Feature Recognition For Machining Features

Risal Abu, Masine Md. Tap
2007 Jurnal Teknologi  
Automated feature recognition is considered a critical component for integration of CAD/CAPP/CAM.  ...  , and the attribute of feature i.e. protrusion/depression.  ...  For the purposes of input to the feature identification, machining features are classified into two types [6] : non-isolated and isolated machining features.  ... 
doi:10.11113/jt.v46.284 fatcat:wlrfkeoogbdnhhd2tngd3kbdha

Boundary Representation-Based Feature Recognition

Napsiah Ismail, Nooh Abu Bakar
1997 Jurnal Teknologi  
Logical procedures were developed to recognise these features which consists of both simple and intersecting features.  ...  This paper introduces an ongoing research which is aimed at the development of an intelligent form feature extraction system from Computer Aided Design (CAD) database, a high level data structure form  ...  These data are then used as an input for the feature recognition system. Recognition process starts with topological checking (the number of faces and its associated edges) from the B-rcp.  ... 
doi:10.11113/jt.v26.1016 fatcat:kkwufhzl7ngnlg7m2im5gpjkui

A tool for ship hull surface healing and domain preparation for downstream applications

Desta Milkessa Edessa, Lutz Kleinsorge, Robert Bronsart
2017 International Journal of Computer Aided Engineering and Technology  
This paper presents an automatic ship hull form CAD data repairing and domain preparing tool.  ...  He is the Head of the Centre for Marine Information Systems (CeMarIS), a research group with an interdisciplinary background performing research in cooperation with partners from the German and European  ...  In addition to repairing 2D and 3D CAD models, successive automatic construction of deck, mirroring of starboard side, region identification and fluid domain preparation of ship hull forms are implemented  ... 
doi:10.1504/ijcaet.2017.080773 fatcat:zairksga5rhu3j7rz5ifrrc6bq

Idealizing Quasi-Axisymmetric 3D Geometries to 2D-Axisymmetric Finite Element Models

Jorge Casero, Trevor Robinson, Cecil Armstrong, Marco Geron
2019 Computer-Aided Design and Applications  
This paper describes an innovative methodology which automatically creates a 2D-axisymmetric finite element (FE) model of a quasi-axisymmetric component from its 3D CAD model.  ...  . • Defeaturing: removal of geometric details which do not affect the simulation results [10] • Geometry clean-up: removal of design features (e.g. fillets) or unintended features (e.g. slivers) due to  ...  Acknowledgements The research leading to these results has received funding from the European Union Seventh  ... 
doi:10.14733/cadaps.2019.1020-1033 fatcat:izlzvgtd7fcw3f742y2bcwwwui

Algorithm for Recognition of Left Atrial Appendage Boundaries in Echocardiographic Images

Hosein Ghayoumi Zadeh, Ali Fayazi, Narbeh Melikian, Mark J Monaghan, Mehdi Eskandari
2021 Iranian Journal of Medical Physics  
A total of 208 3D derived two-dimensional images in the axial plane were derived from each 3D dataset.  ...  an intersection over the union (IOU) algorithm.  ...  Acknowledgment This study was made possible by the financial support of Non-communicable Diseases Research Center of Rafsanjan University of Medical Sciences (grant no: 98003).  ... 
doi:10.22038/ijmp.2020.43736.1663 doaj:e88e74c7a05e4314b31e2c6ab777b779 fatcat:wqapme4w6bd2fax2h2xxqnjfby

Reverse engineering modeling methods and tools: a survey

Francesco Buonamici, Monica Carfagni, Rocco Furferi, Lapo Governi, Alessandro Lapini, Yary Volpe
2017 Computer-Aided Design and Applications  
Reverse Engineering (RE) is a long-term goal of engineering and computer science; it aims at the reconstruction of CAD models from measured data by means of 3D mathematical surfaces and geometrical features  ...  Moreover, an overview of commercial software for RE is presented, considering both dedicated solutions and packages supplied as add-on with 'traditional' CAD systems.  ...  The resulting parametrized and independent 2D features are, then, used as input of the second optimization stage to obtain connected and related 2D features.  ... 
doi:10.1080/16864360.2017.1397894 fatcat:3ycxd42wffhbjptfjwi6hprtpu

A Product Pose Tracking Paradigm Based on Deep Points Detection

Loukas Bampis, Spyridon G. Mouroutsos, Antonios Gasteratos
2021 Machines  
Then, during manufacturing, the body of the product is processed with Aluminum Oxide on those points, which is unobtrusive in the visible spectrum, but easily distinguishable from infrared cameras.  ...  By using modern Deep Neural Network techniques based on Attention models, the most representative points to track an object can be automatically identified using its drawing.  ...  Finally, the above 2D image points are associated with the known 3D object's mess (given from its CAD model), and the Perspective-n-Point (PnP) algorithm [35] is applied to estimate the relative 6-degrees-of-freedom  ... 
doi:10.3390/machines9060112 fatcat:eyygruh6onfo3nu6q3zfml4iku

3D geometry reconstruction from orthographic views: A method based on 3D image processing and data fitting

Lapo Governi, Rocco Furferi, Matteo Palai, Yary Volpe
2013 Computers in industry (Print)  
In this work this parameter must be directly input and can be roughly estimated from the knowledge of the line thickness in the original 2D drawing, the scanning resolution, and the number of dilation  ...  Moving from these considerations, this work is meant to discuss a methodology to perform a quasi-automatic ''translation'' starting from a 2D scanned image of hand-drawn orthographic views.  ... 
doi:10.1016/j.compind.2013.02.003 fatcat:dnsby5oqrjdqfmetlayeccajme

A survey on smart automated computer-aided process planning (ACAPP) techniques

Mazin Al-wswasi, Atanas Ivanov, Harris Makatsoris
2018 The International Journal of Advanced Manufacturing Technology  
and the limitations of the different automatic feature recognition techniques.  ...  Moreover, automatic feature recognition (AFR) techniques are considered one of the most important tasks to create an ACAPP system.  ...  Acknowledgments The authors of the paper would like to sincerely  ... 
doi:10.1007/s00170-018-1966-1 fatcat:wbq6fjemobfoppa4aoekagt2e4

From computer-aided to intelligent machining: Recent advances in computer numerical control machining research

Yingguang Li, Chen-Han Lee, James Gao
2015 Proceedings of the Institution of mechanical engineers. Part B, journal of engineering manufacture  
From the regular shaped feature to freeform surface feature, the feature technology has been used in manufacturing of complex parts, such as aircraft structural parts.  ...  The MpDF concept has been implemented and tested in real examples from the aerospace industry, and has the potential to make promising impact on the future research in the new paradigm of intelligent machining  ...  Then isolated and 20 non-intersecting features were extracted [54] . However, the intersecting features became the main obstacle [55] .  ... 
doi:10.1177/0954405414560622 fatcat:cn44it362bc5rn47esilgt5rvi

APPROACH FOR THE AUTOMATED AND DATA-BASED DESIGN OF MECHANICAL JOINTS

Christoph Zirngibl, Benjamin Schleich, Sandro Wartzack
2021 Proceedings of the Design Society  
Although few studies already investigated the numerical analysis of mechanical joints, an approach for the sustainable and consistent optimization of the strength and reliability of joining connections  ...  AbstractAs a result of the increasing challenges in the field of lightweight constructions, the demand for efficient joining technologies is continuously rising.  ...  Due to the implementation of an intersection between the resulting Pareto frontier and the CAD systems, product designers can then automatically derive a CAD model for the chosen geometrical clinch tool  ... 
doi:10.1017/pds.2021.52 fatcat:up7exqkvfjcfrjtqz2s3afkf5u

A Comprehensive Review of Computer-Aided Diagnosis of Pulmonary Nodules based on Computed Tomography Scans

Wenming Cao, Rui Wu, Guitao Cao, Zhihai He
2020 IEEE Access  
Therefore, with the explosive growth of CT data, it is of great clinical significance to exploit an effective Computer-Aided Diagnosis (CAD) system for radiologists on automatic nodule analysis.  ...  In this paper, a comprehensive review of the application and development of CAD systems is presented.  ...  MGI-CNN was proposed to extract morphological and contextual features from multi-scale input data.  ... 
doi:10.1109/access.2020.3018666 fatcat:efatgjz7srg5vjfqrx75ttyzbu

An integrated fixture planning system for minimum tolerances

S. Bansal, S. Nagarajan, N. Venkata Reddy
2008 The International Journal of Advanced Manufacturing Technology  
An automatic setup planning module is developed for generating setup plans for complete machining of a given component.  ...  A platformindependent STEP-based automatic feature recognition system that can recognize both design and manufacturing features, including intersecting features is implemented.  ...  These non unique solutions are discarded from the set of locating schemes.  ... 
doi:10.1007/s00170-008-1416-6 fatcat:sut7ytfpwnahpiibyozsehnxua

Exact Tool Sizing for Feature Accessibility

T. Lim, J. Corney, D.E.R. Clark
2000 The International Journal of Advanced Manufacturing Technology  
This paper presents an algorithm for calculating the volume of a 2D-profile, accessible by a given diameter of milling cutter.  ...  The methodology has applications in process planning research where it is currently common to assume that a single tool will machine each feature.  ...  We would also like to express our gratitude to Gordon Little and Bob Tuttle for their suggestions and comments during the course of this research.  ... 
doi:10.1007/s001700070013 fatcat:jzsa4zkacbcmhacl5x6wwarooy
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