| Review: |
Here William Crosher follows how the worm gear developed through time: from Archimedes, back in 300 BC) and his famous Archimedean screw to the present day. Currently worm gears are used in almost every type of machine and the author looks at different designs, tooth forms, and their methods of manufacture to obtain the optimum accuracy. He also explains how their manufacturing materials are chosen to resist wear, heat and brakeage. There are also chapters on efficiency, lubrication and gear assembly. Finally, the author examines the use of worm gears in industry: in conveyor systems, vehicles, pumps, energy conversion, etc. |