ISO 10828:2024
(Main)Worm gears — Worm profiles and gear mesh geometry
Worm gears — Worm profiles and gear mesh geometry
This document describes the thread profiles of the five most common worm profile types and provides formulae of their axial profiles. The five worm profile types covered in this document are designated by the letters A, C, I, K and N. This document provides the formulae to calculate the path of contact, the conjugate profile of the worm wheel, the lines of contact, the radius of curvature and the velocities at points of contact. The application of those formulae to calculate parameters used in load capacity calculations are provided in 11.11.
Engrenage à vis cylindriques — Géométrie des profils de vis et de l’engrènement
Le présent document décrit, les profils de filets des cinq types de profils de vis les plus courants et fournit les formules de leur profil axial. Les cinq types de profils vis couverts dans le présent document sont désignés par les lettres A, C, I, K et N. Le présent document fournit les formules pour calculer la ligne de conduite, le profil conjugué de la roue creuse, les lignes de contact, le rayon de courbure et les vitesses aux points de contact. L'application de ces formules pour calculer les paramètres utilisés dans les calculs de capacité de charge est fournie au 11.11.
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International
Standard
ISO 10828
First edition
Worm gears — Worm profiles and
2024-04
gear mesh geometry
Engrenage à vis cylindriques — Géométrie des profils de vis et de
l’engrènement
Reference number
ISO 10828:2024(en) © ISO 2024
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ISO 10828:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
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Published in Switzerland
© ISO 2024 – All rights reserved
ii
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ISO 10828:2024(en)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 2
5 Formulae for calculation of dimensions . 6
5.1 Parameters for a cylindrical worm .6
5.1.1 Axial pitch .6
5.1.2 Axial module .6
5.1.3 Lead .6
5.1.4 Unit lead .6
5.1.5 Diameter quotient .6
5.1.6 Reference lead angle .6
5.1.7 Reference helix angle . .6
5.1.8 Normal pitch on reference cylinder .6
5.1.9 Normal module .7
5.1.10 Reference diameter .7
5.1.11 Reference tooth depth .
...
Norme
internationale
ISO 10828
Première édition
Engrenage à vis cylindriques —
2024-04
Géométrie des profils de vis et de
l’engrènement
Worm gears — Worm profiles and gear mesh geometry
Numéro de référence
ISO 10828:2024(fr) © ISO 2024
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ISO 10828:2024(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
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© ISO 2024 – Tous droits réservés
ii
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ISO 10828:2024(fr)
Sommaire Page
Avant-propos .vi
Introduction .vii
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Symboles et termes abrégés . 2
5 Formules pour le calcul des dimensions . 6
5.1 Paramètres pour une vis cylindrique .6
5.1.1 Pas axial .6
5.1.2 Module axial .6
5.1.3 Pas hélicoïdal .6
5.1.4 Pas hélicoïdal réduit .6
5.1.5 Quotient diamétral .6
5.1.6 Angle d'inclinaison d'hélice de référence .6
5.1.7 Angle d'hélice de référence .7
5.1.8 Pas normal sur le cylindre de référence .7
5.1.9 Module normal .7
5.1.10 Diamètre de référence .7
5.1.11 Hauteur de dent de référence .7
5.1.12 Saillie de réf
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 10828
ISO/TC 60/SC 1
Worm gears — Worm profiles and
Secretariat: BSI
gear mesh geometry
Voting begins on:
2023-11-27
Engrenages à vis cylindriques — Géométrie des profils de vis et de
l'engrènement
Voting terminates on:
2024-01-22
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
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IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 10828:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 1 ----------------------
ISO/FDIS 10828:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 10828
ISO/TC 60/SC 1
Worm gears — Worm profiles and
Secretariat: BSI
gear mesh geometry
Voting begins on:
Engrenages à vis cylindriques — Géométrie des profils de vis et de
l'engrènement
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/FDIS 10828:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
© ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 2 ----------------------
ISO/FDIS 10828:2023(E)
Contents Page
Foreword . vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms.2
5 Formulae for calculation of dimensions . 6
5.1 Parameters for a cylindrical worm . 6
5.1.1 Axial pitch . 6
5.1.2 Axial module . 6
5.1.3 Lead . 6
5.1.4 Unit lead . 6
5.1.5 Diameter quotient .
...
ISO/TC 60/SC 1
Date: 2023-07-25
ISO/FDIS 10828
ISO/TC 60/SC 1/WG 7
ISO/TC 60/SC 1
Secretariat: BSIBSI
Worm gears — Worm profiles and gear mesh geometry
EngrenageDate: 2023-11-13
Worm gears — Worm profiles and gear mesh geometry
Engrenages à vis cylindriques — Géométrie des profils de vis et de l'engrènement
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Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of
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Copyright notice
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ISO/FDIS 10828:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or committee draft and is copyright-protected by ISO. While
required in the reproduction of working draftscontext of its implementation, no part of this publication may be
reproduced or committee draftsutilized otherwise in any form for use by participants inor by any means,
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ISO copyright office
CP 401 • Ch. de Blandonnet 8
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Phone: + 41 22 749 01 11
E-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2023 – All rights reserved
iii
---------------------- Page: 3 ----------------------
ISO/FDIS 10828:2023(E)
Contents Page
Foreword . xi
Introduction . xii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
5 Formulae for calculation of dimensions . 8
5.1 Parameters for a cylindrical worm . 8
5.1.1 Axial pitch . 8
5.1.2 Axial module . 8
5.1.3 Lead . 8
5.1.4 Unit lead . 8
5.1.5 Diameter quotien
...
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