MCG 2101 Lecture Notes - Lecture 7: Hex Key, Fa Wsl Spring Series, Contact Force
4 May 2016
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Document Summary
Use washers to resist vibrations, or use second nut called jam nut (top on diagram). Not as thick as other nut, but doesn"t have to be. Plastically deform inside of nut for good hold. Use cotter pin to go between castle parts at top through hole in bolt, holds nut in. Need more parts need to machine hole through bolt etc. Wheel assembly, also casellated with cotter pin going through holding nut together. When tightening nut/bolt assembly, they grab to threads of bolt so when. Can use washers tightening, they lock into place and hold system together. Push a bit of force against nut to create friction along threads. When squeezing down on lock washer, lock washer will put some force against nut, and nut stays in place from friction against threads. Casellated washer do same thing, provide increased force to push nut upwards which creates more friction against threads = harder to loosen.
