Statistical Tolerance Analysis—A Survey on Awareness, Use and Need in German Industry

Walter, Michael Simon Josef; Klein, Christina; Heling, Björn; Wartzack, Sandro

doi:10.3390/app11062622

Cited by 11 publications

(6 citation statements)

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“…In principle, this means that only a certain percentage of extracted or derived feature points determined as a result measurements during verification must be within the tolerance zone. In practice, it turns out that the use of statistical tolerances and tolerance analyses is still not as common and widespread as anticipated and possible [12].…”

Section: Organization and Basic Principles Of Iso Gps Standardsmentioning

confidence: 99%

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Overview of Principles and Rules of Geometrical Product Specifications According to the Current ISO Standards

Zupan,

Kunc

2024

sv-jme

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The article provides an overview of the philosophy of geometrical product specifications (GPS), which are, in addition to material specifications, a key component of effective planning and production of mechanical products as well as communication between partners in these processes. The principles and basic rules for precise and unambiguous specification of all requirements are embodied in a series of ISO GPS standards. It includes standards that describe the required accuracy of geometrical features of size and geometrical tolerances. An overview of the fundamental principles and rules imposed by the current ISO GPS standards and their content was carried out. This includes a description of the organization of the ISO GPS system and a summary of the content of the more relevant standards, which have recently undergone multiple revisions. The ISO GPS standards are based on the duality principle of specification and verification. In the present research, we focused primarily on geometrical specifications, while omitting the parallel pillar of verification, which, according to the ISO GPS matrix model, contains an even greater number of standards that define this area in more detail.

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Section: Organization and Basic Principles Of Iso Gps Standardsmentioning

confidence: 99%

“…Since the dynamics of verification, updating, and adoption of new ISO standards in this field has been relatively high over the past two decades, all sources are quickly becoming obsolete. Nevertheless, the following should be mentioned: [1] to [5] and [6] to [12].…”

Section: Introductionmentioning

confidence: 99%

Overview of Principles and Rules of Geometrical Product Specifications According to the Current ISO Standards

Zupan,

Kunc

2024

sv-jme

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“…Research reported in [8] shows that only a minority of German companies systematically and reliably introduce statistical tolerance analyses to existing development processes. The complexity of the ISO GPS system standards is indicated as one of the reasons.…”

Section: A Brief Review Of the Surveys On The Iso Gps System Knowledg...mentioning

confidence: 99%

“…The presented research also demonstrated that the ISO GPS system standards are met with great reluctance and scepticism due to their immense scope and complexity. The grounds are that engineers lack the time, support, motivation, and interest to get involved in such a comprehensive set of standards [8].…”

Section: A Brief Review Of the Surveys On The Iso Gps System Knowledg...mentioning

confidence: 99%

Assesment of the Candidate Suppliers’ Fluency in ISO GPS Standards Essential Principles, Rules and Indications

Błaszczyk¹,

Humienny²

2023

Journal of Machine Engineering

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Many potential suppliers state that they are ready to produce components according to specified requirements as they are familiar with the ISO GPS system tools for dimensional and geometrical tolerancing. Regrettably, in many instances, this is not true. This paper discusses a survey developed to assess the geometrical dimensioning and tolerancing skills and results derived from this survey executed among 15 potential suppliers. The investigation aims to preselect potential suppliers and evaluate how much support the suppliers will require while also assessing the risks associated with placing an order with a particular supplier. The survey is based on the online test comprised of 27 closed-end questions used to identify strengths, weaknesses, and knowledge of a candidate supplier's personnel. Five different answers are given for each question. The respondent shall indicate one correct answer. The inquiry is practically oriented. Most of the questions include drawings with indicated selected tolerance as well as drawings of the possible actual parts with exaggerated geometrical deviations. The associated question is whether an actual part is made according to the specification. The main conclusion is that most responders disclose a low level of understanding of the ISO GPS system. Urgent education is needed.

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“…Manufacturing metrology covers verification of whether produced parts fulfil functional requirements defined by a customer. A designer transforms functional requirements into dimensional and geometrical tolerances that limit actual part deviations and determine a part's performance [1,2]. For example, roundness deviations and dimensional deviations of bearings and their adjacent components (shaft and housing) determine a cylindrical roller bearing's vibrational behaviour and fatigue life [3].…”

Section: Introductionmentioning

confidence: 99%

Can ISO GPS and ASME Tolerancing Systems Define the Same Functional Requirements?

Humienny

2021

Applied Sciences

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Geometrical tolerances are defined in the ISO Geometrical Product Specification system that is used worldwide, but on the other hand, the ASME Y14.5 standard is used in American companies to define how far actual parts may be away from their nominal geometry. This paper aimed to investigate whether specifications defining acceptable geometrical deviations in one system can be transformed to specifications in the other system. Twelve selected cases are discussed in the paper. Particularly, two cases of size tolerance, three cases of form tolerances, one case of orientation tolerance, four cases of position tolerance (including position tolerance with MMR for the pattern of five holes) and, finally, two cases of surface profile tolerance (unequally disposed tolerance zone and dynamic profile tolerance). The issue is not only in the several different symbols and a set of different defaults, but also in the different meanings and different application contexts of some symbols that have the same graphical form. The answer to the question raised in the paper title is yes for the majority of indications specified according to ASME Y14.5 when new tools from the 2017 edition of ISO 1101 are applied.

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Statistical Tolerance Analysis—A Survey on Awareness, Use and Need in German Industry

Cited by 11 publications

References 50 publications

Overview of Principles and Rules of Geometrical Product Specifications According to the Current ISO Standards

Overview of Principles and Rules of Geometrical Product Specifications According to the Current ISO Standards

Assesment of the Candidate Suppliers’ Fluency in ISO GPS Standards Essential Principles, Rules and Indications

Can ISO GPS and ASME Tolerancing Systems Define the Same Functional Requirements?

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