From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The challenges and methods of grinding a Hindley worm gear.
| Identifier | ExFiles\Box 28\3\ Scan157 | |
| Date | 10th May 1935 | |
| (sheet 2) Da.{Bernard Day - Chassis Design}6/HP.10.5.35. roller and follows the changing angle of the helix. Books on worm gearing say a Hindley worm cannot be ground except with a wheel which has no thickness transverse to the worm (i.e. an end-mill). Tool Department have set it out and think they can grind with a large wheel. Grinding would not appreciably reduce the slack at the ends as this is due principally to the fact that the roller being set on the rocker shaft at an angle to suit the helix at the middle position, is necessarily not correct on the locks. Da.{Bernard Day - Chassis Design} | ||