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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)
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© ISO 2024 – All rights reserved
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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 .
...