The TTRSs : 13 Constraints for Dimensioning and Tolerancing

Clément, André; Rivière, Alain; Serré, Philippe; Valade, Catherine

doi:10.1007/978-1-4615-5797-5_9

Cited by 86 publications

(65 citation statements)

References 1 publication

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“…As described in an overview of current CAT systems presented by Prisco and Giorleo [60], the model was used to represent the tolerance information in the commercial CAT system CATIA.3D FDT™. Based on the TTRS model, Clement et al [61] presented a method for computer-aided dimensioning and tolerancing; Desrochers and Maranzana [62] designed rules for selecting MGDEs; Salomons et al [63] developed a CAT system; Toulorge et al [64] presented a digital functional assistance process for tolerancing; Jaballi et al [65] proposed a rational method for 3D manufacturing tolerancing synthesis; and Zhang et al [66] designed rules for selecting datum and validating datum reference frame.…”

Section: Ttrs Modelmentioning

confidence: 99%

A review of representation models of tolerance information

Qin

et al. 2017

Int J Adv Manuf Technol

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A good representation model of tolerance information is indispensable for achieving computer-aided tolerancing. Currently, the representation model used in industry is the EXPRESS model, while at the same time, a number of other kinds of representation models have been presented within the academia. The coexistence of different kinds of representation models generates a series of questions and discussions: can the EXPRESS model completely implement the representation of tolerance information semantics in an explicit, computer-readable, and computer-interpretable way? What challenges have been addressed to date by the presented representation models? What are the advantages and disadvantages of each representation model? What capabilities should an ideal representation model have? What are the potential research directions in tolerance information representation in the future? To approach these questions, a review of representation models of tolerance information is presented in this paper. An in-depth analysis of existing representation models is firstly provided. Then, the review makes a detailed comparison among them based on this analysis. Finally, some future research directions in tolerance information representation are suggested.

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Section: Ttrs Modelmentioning

confidence: 99%

A review of representation models of tolerance information

Qin

et al. 2017

Int J Adv Manuf Technol

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“…The matrix model is based on the positional tolerancing and the Technologically and Topologically Related Surfaces (TTRS) criteria (Clément et al 1998). Geometric features are assumed as ideal, i.e.…”

Section: Matrix Modelmentioning

confidence: 99%

Taxonomy of models for tolerance analysis in assembling

Polini

2012

International Journal of Production Research

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“…In practice, the tolerances are specifications by the designer, mainly based on experience and/or empirical information. The concept of topologically and technologically related surfaces (TTRS) (Clement, 1996) is used in specifying tolerances on components. Tolerance types are selected based on the geometric relations between the functional features.…”

Section: Reviewmentioning

confidence: 99%

A scheme for functional tolerancing: A product family in 3D CAD system

Wang¹,

Thamma²

2012

IJIEC

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To meet the need for product variety, many companies are shifting from a massproduction mode to mass customization, which demands quick response to the needs of individual customers with high quality and low costs. The multifunctional nature of mechanical components necessitates that a designer redesign them each time when a component's function changes. The functional Geometric Dimensioning & Tolerancing (GD&T) specification, also called functional tolerancing, must be updated for each component. Currently, this is done by humans, and thus can be very time-consuming and error-prone. Functional tolerancing is one of the main obstacles to practical mechanical product family modeling. In this paper, a graph-based functional tolerancing scheme in 3D CAD is proposed. In the scheme, a product is generated by applying production rules to the graph of the base product, following customers' or manufacturing engineers' requirements. Functional tolerancing of each component of a product in the family is formulated as a non-linear constrained optimization (or cost minimization) process. Certain critical aspects of the scheme have been implemented in SolidWorks ® , by using its Application Programming Interface (API) and C++. LEDA ® and MATLAB ® have been used to solve the graph and optimization problems.

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The TTRSs : 13 Constraints for Dimensioning and Tolerancing

Cited by 86 publications

References 1 publication

A review of representation models of tolerance information

A review of representation models of tolerance information

Taxonomy of models for tolerance analysis in assembling

A scheme for functional tolerancing: A product family in 3D CAD system

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