Introducing Interference Between Parts
An interference fit is generally achieved by shaping the two mating parts so that one or the other, or both, slightly deviate in size from the nominal dimension. The word interference refers to the fact that one part slightly interferes with the space that the other is taking up.
For example, a shaft may be ground slightly oversize and the hole in the bearing (through which it is going to pass with an interference fit) may be ground slightly undersized. When the shaft is pressed into the bearing, the two parts interfere with each other's occupation of space. The result is that both parts elastically deform slightly to fit together creating an extremely high force which results in extremely high friction between the parts—so high that even large amounts of torque cannot turn one of them relative to the other; they are locked together and turn in unison.
Read more about this topic: Interference Fit
Famous quotes containing the words introducing, interference and/or parts:
“The beginner’s well-known propensity for obtruding upon his own privacy, by introducing himself, or a vicar, into his first novel, owes less to the attraction of a ready theme than to the relief of getting rid of oneself, before going on to better things.”
—Vladimir Nabokov (1899–1977)
“Adolescent girls were fighting a mother’s interference because they wanted her to acknowledge their independence. Whatever resentment they had was not towards a mother’s excessive concern, or even excessive control, but towards her inability to see, and appreciate, their maturing identity.”
—Terri Apter (20th century)
“We have seen that men are learning that work, productivity, and marriage may be very important parts of life, but they are not its whole cloth. The rest of the fabric is made of nurturing relationships, especially those with children—relationships which are intimate, trusting, humane, complex, and full of care.”
—Kyle D. Pruett (20th century)