Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Symbols and abbreviated terms
4 Formulae for calculation of dimensions
5 Generalities on worm profiles
6 Definition of profiles
7 Section planes
8 Pitch surfaces
9 Conjugate worm wheel profile
10 Geometry of contact
11 Velocities at contact point
Annex A (informative) - Settings and derivatives of formulae
        for A, I, N profiles
Annex B (informative) - Settings and derivatives of formulae
        for K and C profiles
Annex C (informative) - Algorithm to determine the point of
        generations of worm and worm wheel
Annex D (informative) - Comparison of different worm profiles
Annex E (informative) - Comparison of singularities for
        different worm profiles
Annex F (informative) - Comparison of gear mesh for different
        worm profiles
Annex G (informative) - The utilisation of existing tooling
        for machining of worm wheel teeth
Bibliography

Abstract

Describes thread profiles of the five most common types of worms at the date of publication are described and formulae of their axial profiles are given.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 60