Three-dimensional modelling of geometric defaults to optimize a manufactured part setting

Louati, Jamel; Ayadi, Badreddine; Bouaziz, Zoubeir; Haddar, Mohamed

doi:10.1007/s00170-005-2519-y

Cited by 10 publications

(7 citation statements)

References 3 publications

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“…Basically, two main applications of the MoMP are distinguished: tolerance analysis [40,42,[45][46][47][48] and tolerance synthesis [43,49,50].…”

Section: Main Applicationsmentioning

confidence: 99%

“…(30)) and make possible to run the tolerance analysis more straightforward. Louati et al [46] applied the MoMP to quantify the part quality variation due to different setups in order to select the best setting solution. Tichadou et al [47] compared the use of the MoMP and an integrated CAD/CAM system for tolerance analysis in MMPs remarking the acceptable accuracy of the MoMP according to common requirements in mechanics, and the difficulty of translating the GD&T specifications to be applied within the MoMP.…”

Section: Tolerance Analysismentioning

confidence: 99%

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Manufacturing variation models in multi-station machining systems

Abellán-Nebot

Romero

Mira

2012

Int J Adv Manuf Technol

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In product design and quality improvement fields, the development of reliable 3D machining variation models for multi-station machining processes is a key issue to estimate the resulting geometrical and dimensional quality of manufactured parts, generate robust process plans, eliminate downstream manufacturing problems and reduce ramp-up times. In the literature, two main 3D machining variation models have been studied: the Stream of Variation (SoV) model, oriented to product quality improvement (fault diagnosis, process planning evaluation and selection, etc.), and the Model of the Manufactured Part (MoMP), oriented to product and manufacturing design activities (manufacturing and product tolerance analysis and synthesis). This paper reviews the fundamentals of each model and describes step by step how to derive them using a simple case study. The paper analyzes both models and compares their main characteristics and applications. A discussion about the drawbacks and limitations of each model and some potential research lines in this field are also presented.

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“…Basically, two main applications of the MoMP are distinguished: tolerance analysis [40,42,[45][46][47][48] and tolerance synthesis [43,49,50].…”

Section: Main Applicationsmentioning

confidence: 99%

Section: Tolerance Analysismentioning

confidence: 99%

Manufacturing variation models in multi-station machining systems

Abellán-Nebot

Romero

Mira

2012

Int J Adv Manuf Technol

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“…Tichadou et al [11] formalized the behavior of manufacturing geometrical defects on the entire workstation with a torsor chain. Louati et al [10] used this method to optimize the positioning of an angle bracket.…”

Section: State Of the Artmentioning

confidence: 99%

3D ISO manufacturing specifications with vectorial representation of tolerance zones

Mickaël

Anselmetti

2011

Int J Adv Manuf Technol

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In order to respect the functional drawing of a part, the process planer first has to choose the manufacturing process and then establish the manufacturing specifications to fulfill on the part after each phase. This paper introduces the tolerance zone transfer method, which is based on a vectorial representation of tolerance zones. For each functional requirement, it consists in analyzing the tolerance zone mobilities and the datum function. The transfer determines by iteration manufacturing specifications for each phase. Operations on degrees of freedom allow us to specify the right need using the ISO standards of tolerancing.

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“…Anselmetti and Louati (2005) have proposed a graphical representation of part features, process plans and functional requirements to analyze these three-dimensional specifications and to generate manufacturing specifications with ISO standards. Louati et al (2006) proposed a machining tolerancing method using SDT theory to optimize a manufactured part setting. Ayadi et al (2008) adopted the SDTs to represent the variation defects between manufactured surfaces and nominal surfaces of the workpiece and proposed a 3D modeling method of manufacturing tolerancing.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing variation modeling and process evaluation based on small displacement torsors and functional tolerance requirements

Peng

Zhou

2021

JAMDSM

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The aim of this paper is to study the modeling method of the geometric variations which occur at the successive set-ups of the machining process by relying on the small displacement torsor (SDT) and its transfer formula, and to develop the machining process evaluation method based on the limitation of functional tolerances. The proposed method firstly considers the machining process of the mechanical part as a mechanism mainly consisted of machine-tool, part-holders, machined part, and cutting tools; Then, the SDT parameters are employed to represent the geometrical variations of the part caused by the positioning errors and machining operations during successive machining set-ups; the SDT chains are used to model the deviation propagation between different set-ups. During the whole modeling, there are three kinds of torsors need to be defined which are the global SDT of the part-holder, machined part or machining operation relative to their respective nominal positions, the gap torsor between two contact surfaces, and the deviation torsor of the associated surface relative to their respective nominal positions on the part-holder, machined part or machining operation. After obtaining all SDT chains based on the process planning of the part, an evaluation method is developed to verify the effectiveness of machining process by cumulating the impacts of various manufacturing variations on the respect of functional tolerances. Finally, an example is given to illustrate how to use the proposed method to model the manufacturing variations and evaluate the machining process of the part in the field of CNC milling machining.

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Three-dimensional modelling of geometric defaults to optimize a manufactured part setting

Cited by 10 publications

References 3 publications

Manufacturing variation models in multi-station machining systems

Manufacturing variation models in multi-station machining systems

3D ISO manufacturing specifications with vectorial representation of tolerance zones

Manufacturing variation modeling and process evaluation based on small displacement torsors and functional tolerance requirements

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