SIST EN ISO 17450-4:2018

Name: SIST EN ISO 17450-4:2018 — Geometrical product specification (GPS) - Basic concepts - Part 4: Geometrical characteristics for quantifying GPS deviations (ISO 17450-4:2017)
SKU: SIST EN ISO 17450-4:2018
Price: 41400 RUB
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Geometrical product specification (GPS) - Basic concepts - Part 4: Geometrical characteristics for quantifying GPS deviations (ISO 17450-4:2017)

Название (английский):

Geometrical product specification (GPS) - Basic concepts - Part 4: Geometrical characteristics for quantifying GPS deviations (ISO 17450-4:2017)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 23
Дата публикации:: 27 февраля 2018 г.
Издание:: ISO 17450-4:2017
ICS:: 17.040.40

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Язык документа:

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Срок поставки:4 раб. дн. (перевод)

Цена:41 400 ₽

Описание (английский):

ISO 17450-4:2017 specifies general rules for quantifying GPS deviations for individual GPS characteristics. NOTE GPS deviations can be local or global. A GPS characteristic defined from local GPS deviations is a parameter that transforms the set of local deviations into a global characteristic using a quantifying function (for more details, see Table 1).

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 17450-4:2018 / ISO 17450-4:2017 - Geometrical product specifications (GPS) Part 4 - defines general rules for quantifying GPS deviations for individual geometrical characteristics. Published by CEN as the European adoption of ISO 17450‑4:2017, this standard explains how to transform local geometrical deviations into global characteristic values using formal quantifying functions. It is a general GPS document intended to be used across the ISO GPS matrix for consistent specification, measurement and reporting of geometric deviations.

Key topics and requirements

Scope: General rules for quantifying GPS deviations for individual GPS characteristics (intrinsic and situation characteristics).

Local geometrical deviation: Definition of local signed distance between a point on an input feature and the corresponding point on a reference feature (exists in a reference space).

Reference space: Linear (A1) or areal (A2) spaces attached to the reference feature used to map local deviations.

Quantifying function: Mathematical function that aggregates the complete set of local deviations into a single geometrical characteristic (can be rank‑order based).

Rank‑order characteristics: Standardized types of global measures derived from local deviations, including maximum, minimum, average, median, mid‑range, range and maximum absolute deviation.

Reference feature and datum relationships: Rules for using associated reference features as the basis for deviation evaluation; distinction between features unrelated to a datum system (intrinsic) and those related to a datum system (situation characteristics such as orientation and location).

Local vs global deviations: Clarifies when deviations are treated locally (per point) and how they are combined to yield global characteristics.

General applicability: Consistent conventions for reference extension, continuity assumptions and default decision rules (used with ISO GPS fundamentals).

Practical applications

Use in metrology and quality assurance to define how measurements from CMMs, scanners or profilometers are aggregated into specification values.

Supports tolerance specification, inspection reporting and conformity assessment in mechanical design and manufacturing.

Helps standardize measurement algorithms used in coordinate measurement software, inspection plans and statistical process control.

Applicable to: metrologists, quality engineers, CAD/CAM designers, inspection labs, manufacturing engineers and standards committees.

Related standards

ISO 25378 - Definitions of GPS characteristics and conditions

ISO 14638 - GPS matrix model (relationship and context)

ISO 8015 - Fundamental GPS rules

ISO 14253-1 - Decision rules for verifying conformity

Keywords: EN ISO 17450-4:2018, ISO 17450-4:2017, GPS, geometrical product specifications, quantifying GPS deviations, local geometrical deviation, quantifying function, rank-order characteristic, metrology, CMM inspection.

SIST EN ISO 17450-4:2018

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications

Related standards

Технические детали

ISO 17450-4:2017

Geometrical product specifications (GPS) — Basic concepts — Part 4: Geometrical characteristics for quantifyi…

BS EN ISO 25378:2011

Geometrical product specifications (GPS). Characteristics and conditions. Definitions.

BS EN ISO 14638:2015

Geometrical product specifications (GPS). Matrix model.

SIST EN ISO 8015:2012

Geometrical product specifications (GPS) - Fundamentals - Concepts, principles and rules (ISO 8015:2011)

SIST EN ISO 14253-1:2018

Geometrical product specifications (GPS) - Inspection by measurement of workpieces and measuring equipment -…