Concurrent Conceptual Evaluation of Tolerances’ Synthesis in Mechanical Design

Pérez, Roberto; Ciurana, Joaquim; Riba, Carles; Molina, Arturo; Romero, David; Hernández, L.W.; Quesada, Ana

doi:10.1177/1063293x11406147

Cited by 5 publications

(4 citation statements)

References 46 publications

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“…There are qualitative approaches in the tolerance domain [18], which for example focus on linking geometry, function, and requirement [19]. Moreover, there are research activities exploring abstracted structures to link this information for the tolerance domain [20,21]. Their focus is mostly on improving the traceability of tolerance decisions [22], but their applicability is hindered by the high degree of abstraction.…”

Section: Related Workmentioning

confidence: 99%

A model-based approach for early robustness evaluation â€“ Combination of Contact and Channel Approach with tolerance graphs in SysML

Horber¹,

Li²,

Grauberger³

et al. 2022

DS 119: Proceedings of the 33rd Symposium Design for X (DFX2022)

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Considering variations is essential for the development of robust products, but the applicability of existing robust design approaches in early stages is challenging due to the lack of product information and high levels of abstraction. To overcome this, a combined model is presented, which enables a holistic robustness evaluation in a linked approach. This approach uses the contact and channel approach to identify the relations between embodiment and functions as well as the robustness evaluation based on tolerance graphs. The combined model is implemented with the Systems Modeling Language (SysML) and applied to a coining machine use case. An initial assessment of the model combination and a proposal for a methodically supported workflow for the holistic robustness evaluation is given.

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Section: Related Workmentioning

confidence: 99%

A model-based approach for early robustness evaluation â€“ Combination of Contact and Channel Approach with tolerance graphs in SysML

Horber¹,

Li²,

Grauberger³

et al. 2022

DS 119: Proceedings of the 33rd Symposium Design for X (DFX2022)

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show abstract

“…Trabelsi and Delchambre (2000) discussed the representation schemes of tolerance and tolerance analysis of assemblies to assess the cost and their assembly orders. Rez et al (2011) proposed to stimulate the conceptual synthesis assessment of tolerances in the designing of product process. Yi Zong and Mao (2015) proposed a methodology to find the least manufacturing cost and present worth of expected quality loss (EQL) for the assembly.…”

Section: Introductionmentioning

confidence: 99%

Least cost–tolerance allocation based on Lagrange multiplier

Kumar¹,

Padmanaban

Balamurugan

2016

Concurrent Engineering

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Industry-related competitiveness and reduction in manufacturing cost can be achieved by selection of ideal tolerance. Implementing non-traditional techniques for tolerance allocation to various parts in a mechanical assembly is an enervating procedure. Analytical methods are implemented to obtain creditable design. The main objective of this article is to minimize the manufacturing cost, quality loss, and TRSS (root sum square tolerance) for complex mechanical assemblies. The proposed methodology deals with the reciprocal exponential function. Hence, it is used to solve the problem for obtaining the closed-form solution by Lagrange multiplier method which integrates Lambert W function. The illustrations used in the research article demonstrate the feasibility and effectiveness of the traditional approaches. The results obtained also show that tolerance can be allocated economically and precisely. Here, non-traditional optimization methods are correlated and finally their performances are analyzed.

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“…Its main purpose is the search of the function for which a new product is designed. At this stage, the information about the function for which the product is designed may be inaccurate and incomplete (Pérez et al, 2011). To address this, Frey et al (2009) proposed that Pugh controlled convergence can improve the creative process required in the conceptual design stage.…”

Section: Introductionmentioning

confidence: 99%

Pugh’s Total Design: The design of an electromagnetic servo brake with ABS function – a case study

Villanueva

Lostado-Lorza

Bobadilla

2016

Concurrent Engineering

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Traditionally, design activities cover a wide range of interrelated activities: mechanical design, industrial design, electronic design and civil design, to name a few. Pugh’s Total Design method consists of several core activities that complement and influence each another. Core activities are the basis of the development of the product design specification, the conceptual design, the detailed design, the product’s manufacture and final product sales. A systematic approach is proposed in this article to convert design requirements into an optimal design concept choice. The approach is based on Pugh’s method to design a new electromagnetic servo brake with antilock braking system function. The product design specifications were obtained by the functional analysis method that Tassinari proposed. Also, the Pugh controlled convergence method was used to select the best conceptual design. A combination of the finite element method and multi-objective optimization based on genetic algorithms was used in the detail phase to obtain the optimal geometry of the servo that was designed, while maximizing the braking force and minimizing the current supplied by the battery and the weight of the assembly. The close agreement between the experimental results obtained suggests that Pugh’s Total Design method, combined with the functional analysis method, the Pugh controlled convergence method, the finite element method and genetic algorithms, may be used successfully to design and optimize any electromechanical device.

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Concurrent Conceptual Evaluation of Tolerances’ Synthesis in Mechanical Design

Cited by 5 publications

References 46 publications

A model-based approach for early robustness evaluation â€“ Combination of Contact and Channel Approach with tolerance graphs in SysML

A model-based approach for early robustness evaluation â€“ Combination of Contact and Channel Approach with tolerance graphs in SysML

Least cost–tolerance allocation based on Lagrange multiplier

Pugh’s Total Design: The design of an electromagnetic servo brake with ABS function – a case study

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