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Tolerancing Informatics: Towards Automatic Tolerancing Information Processing in Geometrical Variations Management

Benjamin Schleich, Nabil Anwer
2020 Applied Sciences  
The management of geometrical variations throughout the product life cycle strongly relies on the gathering, processing, sharing and dissemination of tolerancing information and knowledge.  ...  The novelty of the paper can be found in providing a comprehensive overview of tolerancing informatics as an important enabler for future geometrical variations management.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app11010198 fatcat:x7fcyb3xmrdkxlxe6enjtn5udy

Computer Aided Tolerancing Based on Analysis and Synthetizes of Tolerances Method [article]

Abdessalem Hassani, Nizar Aifaoui, Abdelmajid Benamara, Serge Samper
2011 arXiv   pre-print
Based on arithmetic and statistical method, this paper presents a new approach of analysis and verification of tolerances.  ...  The tolerancing step has a great importance in the design process. It characterises the relationship between the different sectors of the product life cycle: Design, Manufacturing and Control.  ...  combinations between the different constituents of ratings of a chain or assembly.  ... 
arXiv:1102.3112v1 fatcat:cv4yebkc6nfnzcudrrciwoompa

Geometrical Specification Model for Gear - Expression, Metrology and Analysis

J.Y. Dantan, J. Bruyere, C. Baudouin, L. Mathieu
2007 CIRP annals  
Most gear tolerance representations are directly driven by the convenience of dimensional metrology and not by the convenience of the set of activities of the tolerancing process.  ...  Its coherence is illustrated by two applications: gear tolerance analysis and gear tolerance verification by CMM.  ...  The representation of deviations and tolerances, on parts or assembly, is the key problem of tolerancing [1] (Figure 2 ).  ... 
doi:10.1016/j.cirp.2007.05.123 fatcat:kp7npq3t25hehnyklxzotdbfaq

Opportunities and Constraints in the Standardization of Geometrical Product Specification

Edward Morse
2020 Procedia CIRP  
, assembly analysis, modeling of manufacturing processes, and standardization.  ...  A key focus of the CIRP CAT 2020 is the role of standardization in GPS specification, and the constraints and opportunities provided by standards throughout the design lifecycle, including in the verification  ...  Acknowledgements The 16 th CIRP Conference on Computer-Aided Tolerancing has been organized with the resources of the Department of Mechanical Engineering and Engineering Science at the University of North  ... 
doi:10.1016/j.procir.2020.07.001 pmid:32834984 pmcid:PMC7429515 fatcat:ebzsz6ccsned5efw45pdptazlm

Managing uncertainty in the new manufacturing era

Giovanni Moroni, Stefano Petrò
2018 Procedia CIRP  
The aim is to cluster these products in new assembly oriented product families for the optimization of existing assembly lines and the creation of future reconfigurable assembly systems.  ...  and geometrical tolerancing, dimensional metrology, uncertainty management, standardization.  ...  Acknowledgements The 15th CIRP Conference on Computer Aided Tolerancing has been organized by the Department of Mechanical Engineering of Politecnico di Milano, with the support of the Italian Association  ... 
doi:10.1016/j.procir.2018.07.001 fatcat:czd43ig7pvcq5gfnth3ujxtzne

Requirements for Datum Systems in Computer Aided Tolerancing and the Verification Process

Marco Weißgerber, Marko Ebermann, Sophie Gröger, Erhard Leidich
2016 Procedia CIRP  
outlined assembly group will be explained.  ...  The recent attempt in Geometrical Product Specification to change from dimensional to geometrical tolerancing leads to a stronger focus on datum systems.  ...  Acknowledgements The research project 3D-BBS was supported by the Federal Ministry for Economic Affairs and Energy (BMWi) on the basis of a resolution passed by the German Bundestag.  ... 
doi:10.1016/j.procir.2016.02.096 fatcat:diivarkx4rgfvomjen4h4utkza

How can Computer Aided Tolerancing Support Closed Loop Tolerance Engineering?

Benjamin Schleich, Sandro Wartzack
2014 Procedia CIRP  
The novelty of the contribution can be found in the consideration of the geometric variations management process from a computer-aided tolerancing point of view and in addressing possible improvements  ...  In this regard, the Closed Loop Tolerance Engineering Model highlights the main activities during geometric variations management and can be used to analyse the relations between the different involved  ...  Therefore, it serves as a link between all activities of geometric product specification and verification, such as tolerancing, manufacturing, and inspection.  ... 
doi:10.1016/j.procir.2014.03.129 fatcat:2dtj5bdkejg5jbdl5lnnrx7wri

A statistical approach for tolerancing from design stage to measurements analysis

Ambre Diet, Nicolas Couellan, Xavier Gendre, Julien Martin, Jean-Philippe Navarro
2020 Procedia CIRP  
Acknowledgment Industrial application on tolerance definition is the topic of a patent application FR15508 n o 1912668.  ...  The second part focuses on the various approaches to improve tolerancing process and finally the third part summarizes results.  ...  We will focus on specification, verification, analysis and synthesis of tolerances. Various methodologies are proposed at different levels of the tolerancing process.  ... 
doi:10.1016/j.procir.2020.05.171 fatcat:js5xyz7kxfarpczwtryv5vk3o4

Tolerancing: Managing uncertainty from conceptual design to final product

Edward Morse, Jean-Yves Dantan, Nabil Anwer, Rikard Söderberg, Giovanni Moroni, Ahmed Qureshi, Xiangqian Jiang, Luc Mathieu
2018 CIRP annals  
is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible.  ...  The main idea of MIC is to find a linear relationship between part deviations and assembly deviations after spring-back.  ...  For many non-rigid assemblies the force needed to close the gap between the parts is quite critical.  ... 
doi:10.1016/j.cirp.2018.05.009 fatcat:hmcrajqpozarzjpyvdcxfffefu

Key research on computer aided tolerancing

Yan-long Cao, Luc Mathieu, Jane Jiang
2015 Journal of Zhejiang University: Science A  
., 2014) , they investigate the concept of skin model shapes that has been developed to address digital representation of "non-ideal" parts and extended to mechanical assemblies.  ...  Computer aided tolerancing (CAT) covers a wide range of subjects including specification and standardization, tolerancing in design/manufacturing process/product life management, verification and metrology  ...  , verification and metrology, and functional tolerancing.  ... 
doi:10.1631/jzus.a1500093 fatcat:ldiv66e7d5bubopx4ltrbjskjq

Inspection of Mechanical Tolerance by Using the Virtual Gauge on a Coordinate Measuring Machine

Salim Boukebbab, Jean Linares, Med Boulahlib, Jean Sprauel
2009 Recent Patents on Computer Science  
The aim of this work is to reduce scraps using a transcription optimization of the fitting functionality of mechanical parts in maximum state of matter. An adaptive verification method is suggested.  ...  It takes account of the interface properties. A control by a virtual gauge and verification a process is developed to validate the tolerancing according to the previously suggested methodology.  ...  According to its choices, he can define the verification procedures of the toleranced parts in advance. The envelope requirement applies in the many cases for which an assembly function is needed.  ... 
doi:10.2174/2213275910902020135 fatcat:wi3l7bipybhc5dhpy5eymsuyvi

Towards easier and more functional semantics for geometrical tolerancing [chapter]

E. Pairel, M. Giordano, S. Samper
1999 Global Consistency of Tolerances  
For some functional requirements the tolerancing shown to become simpler and more functional.  ...  The standardized semantics of those tolerances, i.e. their interpretation on the manufactured feature, presents a lot of drawbacks.  ...  Case of size tolerance applied to angle : The standards allow the size tolerancing of the angle between two planes.  ... 
doi:10.1007/978-94-017-1705-2_14 fatcat:akkrsmzeindmxjjheksxilqk6m


2009 Series on Advances in Mathematics for Applied Sciences  
In the ISO TS 17450 part 2, the notion of the uncertainty is generalized to the specification and the verification.  ...  Therefore, we propose a new specified characteristics based on the statistical tolerancing approach which is directly in relationship with the design intent: the probability distribution of maximum range  ...  Gear Metrology of Statistical Tolerancing on Transmission Error In this part, a statistical tolerancing approach is proposed to provide a new specified characteristic: the probability distribution of the  ... 
doi:10.1142/9789812839527_0048 fatcat:ktt6dxz3cve3xfqczmswwoztqu

Design Verification through Tolerance Stack up Analysis of Mechanical Assembly and Least Cost Tolerance Allocation

A.K. Sahani, P.K. Jain, Satish C. Sharma, J.K. Bajpai
2014 Procedia Materials Science  
Geometric dimensioning and Tolerancing (GDT) constitutes the dominant approach for design and manufacture of mechanical parts that control inevitable dimensional and geometrical deviations within appropriate  ...  An example of dovetail mounting mechanism has been taken for purpose of stack up of angularity. Based on the stacked tolerance, it can be verified with the design tolerance of the assembly.  ...  Features toleranced with GDT reflect the actual relationship between mating parts.  ... 
doi:10.1016/j.mspro.2014.07.036 fatcat:mgepfdmufvfi7bioqa5d7bmj4u

Representation of Geometric Tolerances and its Application to Verify Assemblability between Toleranced Parts [chapter]

Sangho Park, Kunwoo Lee
1997 IFIP Advances in Information and Communication Technology  
This method determines the assemblability by subdividing the range of relative motion between parts until there exists the subdivided region that does not cause the interference.  ...  It would be desirable if the assemblability of parts could be verified in the computer when the tolerances on the parts are stored together with the geometric model of the parts of an assembly and their  ...  This would enable the design for assembly by allowing assemblability verification between toleranced parts in the design stage. This would be one example of the concurrent engineering activities.  ... 
doi:10.1007/978-0-387-35187-2_25 fatcat:iwnqle64mjadve7pdhycizwnf4
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