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).
Improving the quality and reducing the cost of chassis gear production.
| Identifier | ExFiles\Box 136\5\ scan0307 | |
| Date | 25th June 1937 | |
| To Rm.{William Robotham - Chief Engineer} From RHC.{R. H. Coverley - Production Engineer} CHASSIS GEAR PRODUCTION. Referring to our brief conversation on the above subject, we share your anxiety and realise that something must happen quickly in order to have some reduction in Production Charges and still improve the quality of Gear Production. Investigation has been in process for some time and we are now really seeing some results by the fact that a certain number of gears are being fitted direct into the gearboxes without any lapping, and according to Mx.{John H Maddocks - Chief Proving Officer} they are well up to the standard of silence required. The investigation revealed the fact that our machines were so badly out of condition that it could not be expected to produce gears having correct tooth forms and arrangements were made to get the Maag Representative from Zurich over here. He has been in our factory for the past five weeks and has now overhauled one of the Maag machines with the result stated above. It is now our intention to return the remaining two machines to Zurich to be overhauled in the Maag factory. In the meantime re-arrangement of the Gear Department will be carried out and it is intended to transfer all machines required for Chassis Production into No.1 shop. A change in Supervision will also take place and we are hoping before the Wraith Programme is embarked upon we shall have not only improved our Standard of Gear Production but at the same time effected considerable economies in connection with same. In addition to the improvement being carried out in the process of gear manufacture, attention is obviously being directed to the final correction by a process of high speed boring of the bores in the gearbox and the crankcase. This will be a corrective process and not only size accurately but correct alignment and centres. RHC.{R. H. Coverley - Production Engineer} | ||