Press Fit deformation/deflection
Press Fit deformation/deflection
(OP)
Here is the problem:
A sleeve OD is press fitted into a housing ID. There must be an expansion at the ID of the sleeve due to the compression.
I am wondering if anyone has a formula or information how to calculate (or estimate) this change (expansion).
Thanks
A sleeve OD is press fitted into a housing ID. There must be an expansion at the ID of the sleeve due to the compression.
I am wondering if anyone has a formula or information how to calculate (or estimate) this change (expansion).
Thanks





RE: Press Fit deformation/deflection
Regards
Dave
RE: Press Fit deformation/deflection
as for the precise change in diamter, a machinists handbook might tell you (not the sort of thing i'd have thought they'd have), i'd have thought it might be expressed as an initial hole diameter given the pin diameter (presumably something goes inside the sleeve), the clearance desired inside the sleeve (between the sleeve and the pin, possibly assumed to be a sliding fit), the sleeve wall thickness, the amount of interference designed into the installation, and of course the materials (of the housing and the sleeve). timenoshenko (plates and shells) would have the detail equations. generally, the question is how much of the interference is taken up by expanding the hole in the housing (which is much stiffer than the sleeve) and how much is accounted for by compression of the sleeve.
RE: Press Fit deformation/deflection
Since there is a moving object inside the sleeve with small clearance, I like to see the affect of the sleeve's ID wall after the installation.
GenJT.
RE: Press Fit deformation/deflection
look in USAS B4.1 "Preferred Limits & Fits for cylindrical parts" for RC fits for your moving part
RE: Press Fit deformation/deflection