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Elastic
Issues in Design
· Joining
components can exploit the elastic properties of their material. A wheel/shaft
system that is to be coupled by a friction fit is shown.
· If the parts are machined so that a hydraulic
press can push the shaft into the wheel central hole, the resulting interference
fit has high enough inter-component friction forces to retain this configuration
during use.
· An alternate
approach is to heat the wheel or/and cool the shaft so that their thermal
expansion permits easy insertion of the axle into the wheel. Bringing the
system to room temperature forms a strong tension/ compression friction bond. |
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