![Quote](images/misc/quote_icon.png)
Originally Posted by
Al_The_Man
An example application where locomotive car wheels are press fit on to the axle.
The boring mill must bore a spiral groove in one shot through the wheel bore.
The tool on the boring bar has a convex shape that results in a concave groove......Al.
What is the function of the spiral groove? I could understand it for an oil groove but I doubt whether the wheel is intended to spin on the axle
.
Lubrication during a multi-hundred ton press fit to prevent galling?
An open mind is a virtue...so long as all the common sense has not leaked out.