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Tolerancing Informatics: Towards Automatic Tolerancing Information Processing in Geometrical Variations Management
2020
Applied Sciences
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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]
2011
arXiv
pre-print
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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
2007
CIRP annals
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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
2020
Procedia CIRP
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, 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
2018
Procedia CIRP
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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
2016
Procedia CIRP
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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?
2014
Procedia CIRP
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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
2020
Procedia CIRP
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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
2018
CIRP annals
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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
2015
Journal of Zhejiang University: Science A
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., 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
2009
Recent Patents on Computer Science
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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]
1999
Global Consistency of Tolerances
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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
GEAR METROLOGY OF STATISTICAL TOLERANCING BY NUMERICAL SIMULATION
[chapter]
2009
Series on Advances in Mathematics for Applied Sciences
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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
2014
Procedia Materials Science
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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]
1997
IFIP Advances in Information and Communication Technology
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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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