ISO 17450-3:2016

Name: ISO 17450-3:2016 — Geometrical product specifications (GPS) — General concepts — Part 3: Toleranced features
SKU: ISO 17450-3:2016
Price: 34200 RUB
Availability: InStock

Geometrical product specifications (GPS) — General concepts — Part 3: Toleranced features

Название (английский):

ISO 17450-3:2016

Geometrical product specifications (GPS) — General concepts — Part 3: Toleranced features

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 19
Дата публикации:: 24 мая 2016 г.
Издание:: ISO IS 17450 edition 1 version 1
ICS:: 17.040.01

Тип поставки:

Full version34 200 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:4 раб. дн. (перевод)

Цена:34 200 ₽

Описание (английский):

ISO 17450-3:2016 gives default definitions for the extracted features (integral or derived) of workpieces, which are toleranced features in GPS specifications (dimensional, geometrical, or surface texture specifications). This part of ISO 17450 defines default geometrical features used to define GPS characteristics.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 17450-3:2016 - part of the ISO Geometrical Product Specification (GPS) family - defines default rules and definitions for toleranced features used in dimensional, geometrical and surface texture specifications. The standard establishes how extracted features (integral or derived) of a workpiece are defined and interpreted in GPS specifications, providing default geometrical features such as integral features, median features and opposing point pairs that underpin verification and tolerancing.

Key Topics and Requirements

Scope and intent: Gives default definitions for extracted features that become the toleranced feature in GPS specifications. It is a fundamental GPS standard and follows general GPS tenets (ISO 8015) and decision rules (ISO 14253‑1).

Extracted integral features: Defines integral features (points, lines, surfaces) and states that, by default, the toleranced feature is the complete extracted integral feature. Elementary toleranced features can be portions, lines or point sets of the integral feature.

Extracted integral line and point:

An extracted integral line is formed by intersection of the real (non‑ideal) feature with an intersection feature; if the intersection is not fully constrained, multiple extracted lines form the complete toleranced feature.
An extracted integral point results from the intersection of a non‑ideal integral feature with a locked intersection straight line.

Opposing point pair and two‑point size: An opposing point pair (two points established simultaneously) defines local size; the centre of such a pair can be used to derive median surfaces or centres.

Median features: The document addresses derived median point/line/surface definitions (used to characterize size, location or orientation of features of size).

Default association rules: Unless otherwise specified, associations to establish geometrical features use the total least squares (Gaussian) objective without material constraint. Final associations for datums and characteristics depend on the specification.

Notes on practical effects: The standard highlights how uneven point distribution or removed portions (e.g., keyways) can bias association results (e.g., axis location shifts).

Applications and Who Uses It

Design and mechanical engineers for consistent GD&T and tolerancing definitions.

Metrology and quality control teams for measurement plans and verification of features of size and form.

CAD/CAM and inspection software developers to implement default extraction and association algorithms (e.g., median extraction, opposing point pair logic).

Standards writers and technical committees aligning GPS matrix models and related standards.

Practical applications include specification of holes, shafts, slots, wedges and other features of size where extracted/median features and datum associations are required for inspection and acceptance.

ISO 17450-3:2016

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Технические детали

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 -…

SIST EN ISO 17450-3:2016

Geometrical product specifications (GPS) - General concepts - Part 3: Toleranced features (ISO 17450-3:2016)

BS EN ISO 17450-1:2011

Geometrical product specifications (GPS). General concepts. Model for geometrical specification and verificat…

SIST EN ISO 17450-4:2018

Geometrical product specification (GPS) - Basic concepts - Part 4: Geometrical characteristics for quantifyin…

SIST EN ISO 22432:2012

Geometrical product specifications (GPS) - Features utilized in specification and verification (ISO 22432:201…

BS EN ISO 25378:2011

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