SIST ISO 701:2000
(Main)International gear notation -- Symbols for geometrical data
International gear notation -- Symbols for geometrical data
Notation internationale des engrenages -- Symboles géométriques
La présente Norme internationale spécifie des symboles géométriques pour l'emploi dans la notation des engrenages. Elle comporte deux listes, à savoir : -- d'une part, les symboles principaux, composés d'une seule lettre de base (voir tableau 1); -- d'autre part, des indices à ajouter, s'il y a lieu, aux symboles principaux, pour exprimer telle ou telle qualification du terme en question (voir tableaux 2, 3 et 4).
Mednarodne označbe za zobnike - Simboli za geometrijske veličine
General Information
- Status
- Published
- Publication Date
- 31-Aug-2000
- Technical Committee
- ISEL - Mechanical elements
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Sep-2000
- Due Date
- 01-Sep-2000
- Completion Date
- 01-Sep-2000
Relations
- Effective Date
- 18-Apr-2008
Overview
SIST ISO 701:2000, titled International gear notation - Symbols for geometrical data, is an international standard developed by ISO/TC 60 (Gears) subcommittee SC 1, which focuses on nomenclature and worm gears. This second edition updates the original 1976 standard and provides a unified system of symbols for representing the key geometrical data of gears. The standard promotes a consistent international language for gear geometry notation to ensure clear communication and reduce misunderstandings across technical documents and industries.
By specifying standard symbols and indices, ISO 701 facilitates the exchange of technical gear design information worldwide. This standard is essential for manufacturers, engineers, and technical professionals working with gear systems, improving clarity in documentation and enhancing collaboration on a global scale.
Key Topics
Symbol System for Geometrical Data: ISO 701 defines primary symbols comprising single Latin or Greek letters (capital or lowercase, italicized), which represent fundamental gear geometrical parameters such as module, number of teeth, pitch diameter, and pressure angle.
Indices and Modifiers: The standard introduces indices to refine the main symbols, indicating specific characteristics like position (head, base), type (actual, maximum, minimum), and reference elements (pinion, gear). Numeric indices (e.g., 0 for tool, 1 for pinion) help specify particular gear components.
Notation Rules: Symbols consist of a primary letter followed by indices written on a single line beneath it. The standard avoids complicated features such as barred notations, superscripts other than powers, and multi-level indices to maintain simplicity.
Order of Indices: An established order for multiple indices ensures uniformity and avoids ambiguity when several qualifiers apply to a symbol concurrently.
Examples: The standard provides clear examples like "m" for module, "d₁" for pitch diameter of the pinion, or "R₂w" for the length of the generatrix of a gear cone, illustrating practical use of the notation system.
Applications
Gear Design and Manufacturing: ISO 701 supports standardized documentation of gear geometrical data in design drawings, specification sheets, and technical reports, improving clarity and reducing errors during production.
Technical Communication: Enables engineers, designers, and quality control specialists across different countries and companies to understand and interpret gear data without confusion.
Educational Resources: Valuable for training mechanical engineers and students by providing a consistent language for gear geometry, essential for learning gear principles and advanced design.
Software and CAD Integration: The notation system can be implemented inside gear design software and computer-aided design (CAD) tools to maintain uniform labeling and parameter definitions.
Standardization in International Trade: Helps harmonize specifications in global supply chains, improving compatibility and interoperability of gear components manufactured by different suppliers.
Related Standards
ISO 1122-1:1998 - Vocabulary of Gears - Part 1: Geometrical Definitions: ISO 701 symbols correspond to terms defined in ISO 1122-1, ensuring consistency between terminology and notation.
ISO/TC 60 Series: Other ISO standards related to gear design, testing, and quality assurance complement the geometrical notation by addressing manufacturing processes and performance criteria.
Technical Drawing Standards: Standards such as ISO 128 (technical drawings - general principles) and ISO 129 (dimensioning) use such standardized symbols to communicate gear dimensions effectively.
International Electrotechnical Commission (IEC) Standards: Collaboration between ISO and IEC ensures integration with electromechanical components involving gears, facilitating cross-disciplinary standard use.
Keywords: ISO 701, gear notation, gear symbols, geometrical data, gear standards, international gear standards, gear design, gear geometry symbols, mechanical engineering, gear documentation, gear manufacturing standards.
ISO 701:1998 - International gear notation -- Symbols for geometrical data
ISO 701:1998 - Notation internationale des engrenages -- Symboles géométriques
Frequently Asked Questions
SIST ISO 701:2000 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "International gear notation -- Symbols for geometrical data". This standard covers: La présente Norme internationale spécifie des symboles géométriques pour l'emploi dans la notation des engrenages. Elle comporte deux listes, à savoir : -- d'une part, les symboles principaux, composés d'une seule lettre de base (voir tableau 1); -- d'autre part, des indices à ajouter, s'il y a lieu, aux symboles principaux, pour exprimer telle ou telle qualification du terme en question (voir tableaux 2, 3 et 4).
La présente Norme internationale spécifie des symboles géométriques pour l'emploi dans la notation des engrenages. Elle comporte deux listes, à savoir : -- d'une part, les symboles principaux, composés d'une seule lettre de base (voir tableau 1); -- d'autre part, des indices à ajouter, s'il y a lieu, aux symboles principaux, pour exprimer telle ou telle qualification du terme en question (voir tableaux 2, 3 et 4).
SIST ISO 701:2000 is classified under the following ICS (International Classification for Standards) categories: 01.080.30 - Graphical symbols for use on mechanical engineering and construction drawings, diagrams, plans, maps and in relevant technical product documentation; 21.200 - Gears. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ISO 701:2000 has the following relationships with other standards: It is inter standard links to ISO 701:1976. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST ISO 701:2000 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 701
Second edition
1998-05-15
International gear notation — Symbols for
geometrical data
Notation internationale des engrenages — Symboles géométriques
A
Reference number
Foreword
ISO (the International Organization for Standardization) is a wordwide
federation of national standards bodies (ISO member bodies). The work of
preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be represented
on that committee. International organizations, governmental and non-
governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 701 was prepared by Technical Committee
Gears Nomenclature and worm gears
ISO/TC 60, , Subcommittee SC 1, .
This second edition of ISO 701 cancels and replaces the first edition
(ISO 701:1976), which has been technically revised.
© ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
©
ISO ISO 701:1998(E)
Introduction
The symbols in this International Standard are defined for use in relation to
the principal geometrical terms defined in ISO 1122-1:1998, Vocabulary of
gear terms — Part 1: Definitions related to geometry.
Consequently, it is important:
— that these symbols be used in national standards and, where
appropriate, in other national documents in order to facilitate the
understanding of documents which are exchanged between countries;
— to use for geometrical data only those combinations of letters which
are given in the tables of this International Standard, in order to avoid
any risk of confusion with symbols relating to other gear data, which
may be determined later.
iii
©
INTERNATIONAL STANDARD ISO ISO 701:1998(E)
International gear notation — Symbols for geometrical data
1 Scope
This International Standard specifies geometrical symbols for use in notation of gear data. It comprises two lists:
— the principal symbols, consisting of a single basic letter (see table 1); and
— subscripts to be used as necessary to qualify principal symbols (see tables 2, 3 and 4).
2 Symbols
2.1 Derivation of geometrical symbols
The principal rules are as follows:
a) symbols consist of a principal symbol which can be followed by one or more subscripts and possibly a
superscript;
b) the principal symbol is either a single uppercase or lowercase letter. The letter should b
...
NORME ISO
INTERNATIONALE 701
Deuxième édition
1998-05-15
Notation internationale des engrenages —
Symboles géométriques
International gear notation — Symbols for geometrical data
A
Numéro de référence
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée aux
comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du comité
technique créé à cet effet. Les organisations internationales, gouvernementales et non gouvernementales, en
liaison avec l'ISO, participent également aux travaux. L'ISO collabore étroitement avec la Commission
électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptés par les comités techniques sont soumis aux comités membres pour
vote. Leur publication comme Normes internationales requiert l'approbation de 75 % au moins des comités
membres votants.
La Norme internationale ISO 701 a été élaborée par le comité technique ISO/TC 60, Engrenages, sous-comité SC 1,
Nomenclature et engrenages à vis.
Cette deuxième édition annule et remplace la première édition (ISO 701:1976), dont elle constitue une révision
technique.
© ISO 1998
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publi-
cation ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun pro-
cédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord
écrit de l'éditeur.
Organisation internationale de normalisation
Case postale 56 • CH-1211 Genève 20 • Suisse
Internet iso@iso.ch
Imprimé en Suisse
ii
© ISO
Introduction
Les symboles de la présente Norme internationale sont définis pour être utilisés en relation avec les principaux termes
géométriques définis dans l’ISO 1122-1:1998, Vocabulaire des engrenages — Partie 1: Définitions géométriques.
Il importe par conséquent:
— d’utiliser ces symboles dans les normes nationales et dans les autres documents nationaux, si appropriés, afin
d'assurer un véritable langage international de notations facilitant les échanges de documents d'un pays à l'autre;
— de n'utiliser, pour les données géométriques, que les combinaisons des lettres faisant l'objet des tableaux de la
présente Norme internationale, de façon à éviter tout risque de confusion avec les notations à prévoir ultérieurement
pour d'autres données relatives aux engrenages.
iii
NORME INTERNATIONALE © ISO ISO 701:1998(F)
Notation internationale des engrenages — Symboles géométriques
1 Domaine d’application
La présente Norme internationale spécifie des symboles géométriques pour l'emploi dans la notation des engrenages.
Elle comporte deux listes, à savoir:
— d'une part, les symboles principaux, composés d'une seule lettre de base (voir tableau 1);
— d'autre part, des indices à ajouter, s'il y a lieu, aux symboles principaux, pour exprimer telle ou telle qualification du
terme en question (voir tableaux 2, 3 et 4).
2 Symboles
2.1 Dérivation des symboles géométriques
Les règles principales sont définies comme suit:
a) les symboles sont composés d'un symbole principal qui peut être suivi par un ou plusieurs indices, et par un
éventuel exposant;
b) le symbole principal est indifféremment une lettre majuscule ou minuscule. Cette lettre est une lettre
...
SL OVENSKI SIST ISO 701
prva izdaja
STANDARD
september 2000
Mednarodne označbe za zobnike - Simboli za geometrijske veličine
(istoveten ISO 701:1998)
International gear notation - Symbols for geometrical data
Notation internationale des engrenages - Symboles géométriques
Deskriptorji: zobniki, geometrijske veličine, terminologija, označbe
Referenčna številka
ICS 01.080.30; 21.200 SIST ISO 701:2000 (sl)
Nadaljevanje na straneh 2 do 8
© Standard je založil in izdal Urad Republike Slovenije za standardizacijo in meroslovje pri Ministrstvu za znanost in tehnologijo.
Razmnoževanje ali kopiranje celote ali delov tega standarda ni dovoljeno.
SIST ISO 701 : 2000
NACIONALNI UVOD
Standard SIST ISO 701 (sl), Mednarodne označbe za zobnike - Simboli za geometrijske veličine, prva
izdaja, 2000, ima status slovenskega standarda in je istoveten mednarodnemu standardu
ISO 701 (en), International gear notation - Symbols for geometrical data, Second edition, 1998-05-15.
NACIONALNI PREDGOVOR
Mednarodni standard ISO 701:1998 je pripravil tehnični odbor Mednarodne organizacije za
standardizacijo ISO/TC 60 Zobniki, pododbor SC 1 Označbe in polžasta gonila.
Odločitev za prevzem tega standarda po metodi prevoda je dne 1998-06-17 sprejel tehnični odbor
USM/TC SEL Strojni elementi.
Ta slovenski standard je dne 2000-03-27 odobril direktor USM.
OPOMBI
- Povsod, kjer se v besedilu standarda uporablja izraz “mednarodni standard”, v
- Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.
SIST ISO 701 : 2000
VSEBINA Stran
Uvod . 4
1 Namen standarda . 5
2 Simboli . 5
SIST ISO 701 : 2000
Uvod
Označbe v tem standardu so izbrane skladno h geometrijskim veličinam, ki so definirane v standardu
SIST ISO 1122-1:1983, Terminološki slovar za zobniške prenosnike - 1.del: Geometrijske definicije.
S tem v zvezi je pomembno:
- da se te označbe uporabljajo v nacionalnih standardih in nacionalnih dokumentih z namenom, da
bi olajšali razumevanje med uporabniki različnih držav;
- da se za označevanje geometrijskih veličin uporabljajo le tiste kombinacije črk, ki so podane v
preglednicah tega mednarodnega standarda, da bi se izognili zamenjavi z označbami, povezanih z
drugimi zobniškimi podatki, ki utegnejo biti določeni pozneje.
SIST ISO 701 : 2000
Mednarodne označbe za zobnike – Simboli za geometrijske veličine
1 Namen standarda
Ta mednarodni standard določa geometrične simbole za uporabo in označevanje zobniških podatkov.
Obsega dva seznama:
- osnovne simbole, ki so označeni z eno samo črko (glej preglednico 1); in
- indekse, ki se uporabljajo in so potrebni za podrobno opredelitev osnovnih simbolov (glej
preglednice 2,3 in 4).
2 Simboli
2.1 Izpeljava simbolov geometrijskih veličin
Osnovna pravila:
a) simboli kot celota so sestavljeni iz osnovnega simbola, ki mu je dodan eden ali več podpisanih,
lahko pa tudi nadpisanih indeksov;
b) osnovni simbol je lahko velika ali mala črka abecede. Črke naj bodo iz latinice ali iz grške
abecede v kurzivni pisavi;
c) numerični indeks je lahko številka, decimalno število ali rimska številka. Noben simbol naj ne
vsebuje več kot en numerični indeks;
d) vsi podpisani indeksi naj bodo pisani na isti črti, toda pod črto osnovnih simbolov;
e) izogibati se je treba obkroženih (uokvirjenih) označb (nadpisanih in podpisanih), nadpisanih
označb, razen eksponentov, podpisanih in nadpisanih predpon, podpisanih in nadpisanih označb
v drugem redu in vejic.
2.2 Osnovni simboli geometrijskih veličin
Najpogosteje uporabljani simboli geometrijskih veličin so našteti v preglednici 1.
2.3 Osnovni indeksi
Enak indeks ima lahko različen pomen; to je odvisno od simbola, kateremu pripada indeks. Največkrat
uporabljani indeksi so našteti v pregledni
...
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