EN ISO 21204:2020
(Main)Geometrical product specifications (GPS) - Transition specification (ISO 21204:2020)
Geometrical product specifications (GPS) - Transition specification (ISO 21204:2020)
This document defines a number of specification operators for the specification of extended edge transition features between features. An edge transition feature is an integral feature connecting two adjacent integral features. The extended edge transition feature includes portions of the adjacent features. All these specifications apply to any line in a defined direction in the extended edge transition feature. This document also defines the specification modifiers and the drawing indications for such transition specifications.
The proportions and dimensions of the graphical symbols to be used are also specified.
The specifications defined in this document are suitable for relatively simple edge transition functions, for example ensuring assembly without interference. For more complex functions, geometrical tolerancing offers more precise tools.
This document is by intention limited to only edge transition features between two planes and between a cylinder and a plane nominally perpendicular to it.
Annex A gives the first approach for an algorithm to identify toleranced features and adjacent reference sections. This algorithm is subject to change as more experience is gathered.
This document provides a set of tools to express several transition specifications. It does not present any information on the relationship between a function or a use and a transition specification.
NOTE 1 Corners (the transition between three or more features) are not edge transition features and are consequently not covered by this document.
NOTE 2 An edge transition feature exists between two single features. A defined edge transition feature has a defined nominal shape and is not sharp (r = 0).
Geometrische Produktspezifikation (GPS) - Spezifikation von Übergängen (ISO 21204:2020)
Dieses Dokument legt eine Reihe an Spezifikationsoperatoren für die Spezifikation von erweiterten Kanten-übergangselementen zwischen Geometrieelementen fest. Ein Kantenübergangselement ist ein integrales Element, über das zwei angrenzende integrale Geometrieelemente verbunden sind. Das erweiterte Kanten¬übergangselement beinhaltet Teile der angrenzenden Geometrieelemente. Alle diese Spezifikationen gelten für alle Geraden in einer definierten Richtung in dem erweiterten Kantenübergangselement. Dieses Dokument definiert zudem die Spezifikations-Modifikationssymbole und die Zeichnungsangaben für solche Übergangs¬spezifikationen.
Die Proportionen und Maße der zu verwendenden graphischen Symbole sind ebenfalls angegeben.
Die in diesem Dokument definierten Spezifikationen sind für relativ einfache Kantenübergangsfunktionen geeignet, z. B. zum Sicherstellen der Montage ohne Störung. Für komplexere Funktionen bietet die geo-metrische Tolerierung präzisere Werkzeuge.
Dieses Dokument beschränkt sich bewusst nur auf Kantenübergangselemente zwischen zwei Ebenen und zwischen einem Zylinder und einer zu ihm nominell senkrechten Ebene.
Anhang A bietet den ersten Ansatz für einen Algorithmus zur Identifizierung von tolerierten Geometrie-elementen und angrenzenden Referenzabschnitten. Dieser Algorithmus kann jederzeit aktualisiert werden, falls neue Informationen vorliegen.
Dieses Dokument stellt mehrere Werkzeuge zur Angabe mehrerer Übergangsspezifikationen zur Verfügung. Es liefert keine Informationen über die Beziehung zwischen einer Funktion oder einer Verwendung und einer Übergangsspezifikation.
ANMERKUNG 1 Ecken (der Übergang zwischen drei oder mehr Geometrieelementen) sind keine Kantenübergangs-elemente und werden daher in diesem Dokument nicht berücksichtigt.
ANMERKUNG 2 Ein Kantenübergangselement ist zwischen zwei einzelnen Geometrieelementen vorhanden. Ein definiertes Kantenübergangselement besitzt eine definierte nominale Gestalt und ist nicht scharf (r = 0).
Spécifications géométriques des produits (GPS) - Spécification de transition (ISO 21204:2020)
Le présent document définit un certain nombre d'opérateurs de spécification pour la spécification des éléments de transition d'arête étendue entre des éléments. Un élément de transition d'arête est un élément intégral qui relie deux éléments intégraux adjacents. L'élément de transition d'arête étendue inclut des portions des éléments adjacents. L'ensemble de ces spécifications s'appliquent à n'importe quelle ligne suivant une direction définie dans l'élément de transition d'arête étendu. Le présent document définit également les modificateurs de spécification et les indications sur le dessin relatives aux spécifications de transition.
Il spécifie également les proportions et dimensions des symboles graphiques à utiliser.
Les spécifications définies dans le présent document s'appliquent à des fonctions de transition d'arête relativement simples, par exemple pour garantir un assemblage sans interférence. Pour des fonctions plus complexes, un tolérancement géométrique offre des outils plus précis.
De par son intention, le présent document est limité aux seuls éléments de transition d'arête entre deux plans et entre un cylindre et un plan qui lui est nominalement perpendiculaire.
L'Annexe A décrit la première approche d'un algorithme permettant d'identifier les éléments tolérancés et les sections de référence adjacentes. Cet algorithme est susceptible d'évoluer au fil des expérimentations.
Le présent document fournit un ensemble d'outils visant à exprimer plusieurs spécifications de transition. Il ne donne aucune information sur la relation entre une fonction ou une utilisation et une spécification de transition.
NOTE 1 Les angles (la transition entre au moins trois éléments) ne sont pas des éléments de transition d'arête et ne sont donc pas couverts par le présent document.
NOTE 2 Il existe un élément de transition d'arête entre deux éléments simples. Un élément de transition d'arête défini possède une forme nominale définie et n'est pas vif (r = 0).
Specifikacije geometrijskih veličin izdelka (GPS) - Specifikacija prehoda (ISO 21204:2020)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2020
Specifikacije geometrijskih veličin izdelka (GPS) - Specifikacija prehoda (ISO
21204:2020)
Geometrical product specifications (GPS) - Transition specification (ISO 21204:2020)
Geometrische Produktspezifikation (GPS) - Spezifikation von definierten Übergängen
zwischen Geometrieelementen (ISO 21204:2020)
Spécifications géométriques des produits (GPS) - Spécification de transition (ISO
21204:2020)
Ta slovenski standard je istoveten z: EN ISO 21204:2020
ICS:
17.040.40 Specifikacija geometrijskih Geometrical Product
veličin izdelka (GPS) Specification (GPS)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21204
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 17.040.01
English Version
Geometrical product specifications (GPS) - Transition
specification (ISO 21204:2020)
Spécifications géométriques des produits (GPS) - Geometrische Produktspezifikation (GPS) -
Spécification de transition (ISO 21204:2020) Spezifikation von definierten Übergängen zwischen
Geometrieelementen (ISO 21204:2020)
This European Standard was approved by CEN on 16 February 2020.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21204:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 21204:2020) has been prepared by Technical Committee ISO/TC 213
"Dimensional and geometrical product specifications and verification" in collaboration with Technical
Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” the
secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2020, and conflicting national standards
shall be withdrawn at the latest by September 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 21204:2020 has been approved by CEN as EN ISO 21204:2020 without any modification.
INTERNATIONAL ISO
STANDARD 21204
First edition
2020-02
Geometrical product specifications
(GPS) — Transition specification
Spécifications géométriques des produits (GPS) — Spécification de
transition
Reference number
ISO 21204:2020(E)
©
ISO 2020
ISO 21204:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ISO 21204:2020(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Basic concepts . 2
5 General indication rules . 4
5.1 Symbols . 4
5.2 Indications using the transition specification symbol . 5
5.2.1 General. 5
5.2.2 Indications in face view . 6
5.2.3 Indications in 3D . 6
5.3 Indication areas around the transition specification symbol . 7
6 Circular edge transition feature indications . 7
6.1 Fixed radius profile specification . 7
6.2 Variable radius profile specification . 8
6.3 Consistent radius profile specification . 9
6.4 Maximum material radius boundary specification.10
6.5 Least material radius boundary specification .10
6.6 Maximum material radius boundary with profile specification .11
6.7 Least material radius boundary with profile specification .12
6.8 Combined maximum material and least material radius boundary specification .13
7 Chamfer edge transition feature indications .14
7.1 Fixed chamfer profile specification .14
7.2 Variable chamfer profile specification .17
7.3 Consistent chamfer profile specification .18
7.4 Maximum material chamfer boundary specification .19
7.5 Least material chamfer boundary specification .20
7.6 Maximum material chamfer boundary with profile specification .21
7.7 Least material chamfer boundary with profile specification .22
7.8 Combined maximum material and least material chamfer boundary specification .23
8 Elliptical edge transition feature indications .24
8.1 Fixed elliptical profile specification .24
8.2 Variable elliptical profile specification .25
8.3 Consistent elliptical profile specification .26
8.4 Maximum material elliptical boundary specification .26
8.5 Least material elliptical boundary specification .27
8.6 Maximum material elliptical boundary with profile specification .28
8.7 Least material elliptical boundary with profile specification.29
8.8 Combined maximum material and least material elliptical boundary specification .30
9 Edge transition feature defined by CAD .31
9.1 CAD profile specification .31
9.2 Maximum material CAD profile boundary specification .32
9.3 Least material CAD profile boundary specification .33
9.4 Maximum material CAD profile boundary with profile specification .34
9.5 Least material CAD profile boundary with profile specification .35
10 Rules for supplemental indications .36
10.1 Symbols .36
10.2 Limits of different nominal shapes .36
10.3 Extent of the toleranced feature.37
ISO 21204:2020(E)
10.4 Tolerance zone offset .37
10.5 Indication of primary adjacent reference section . .38
10.6 Indication of several toleranced features .
...
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