Table of Contents

Foreword<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Symbols and abbreviated terms<br>4 Formulae for calculation of dimensions<br>5 Generalities on worm profiles<br>6 Definition of profiles<br>7 Section planes<br>8 Pitch surfaces<br>9 Conjugate worm wheel profile<br>10 Geometry of contact<br>11 Velocities at contact point<br>Annex A (informative) - Settings and derivatives of formulae<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for A, I, N profiles<br>Annex B (informative) - Settings and derivatives of formulae<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for K and C profiles<br>Annex C (informative) - Algorithm to determine the point of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;generations of worm and worm wheel<br>Annex D (informative) - Comparison of different worm profiles<br>Annex E (informative) - Comparison of singularities for<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;different worm profiles<br>Annex F (informative) - Comparison of gear mesh for<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;different worm profiles<br>Annex G (informative) - The utilisation of existing tooling<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for machining of worm wheel teeth<br>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	British Standards Institution
Pages
ISBN
Committee	MCE/5/-/7
Supersedes	BS ISO/TR 10828 : 1997