A toasty HOT
small sample of
some of our work
a keyway on a shaft.
This is very easily accomplished with a milling machine as they come in various shapes and sizes, but if you
don't have one it is possible to drill a line of shallow holes along
the shaft and then remove the excess with a file a little narrower than
the proposed keyway.
An alternative would be to use a milling tool in
your drill, although the shaft would need to be secure and very light
milling would be the order of the day. This can be a bit awkward if you
have a blind keyway, but there is a simpler method... See below.
Installing a keyway
inside a disk or gear wheel.
For this you turn a stub of the same metal as the disk or gear wheel,
down to a tight fit inside the disk or gear wheel and fit it inside and
skim the surplus off so the front face is flush.
Next, simply centre
punch the joined line where you want the keyway to be and drill through
the disk or gear wheel to a slightly smaller size than is required,
before splitting the two parts. As the material is the same, your drill
should not wonder off line. All that is required now is to file it
square to the right dimensions which is relatively easy as the bulk of
the metal is removed with drilling.
The above keyways are being produced for a square piece of key steel to
By far a simpler way is to use a Scotch key. This involves having the
end of the shaft flush with your disk or gearwheel as above, and simply
drill between the two, half and half, and drive in a steel pin of the same diameter.
Alternatively, for easier dismantling purposes, the hole could be drilled slightly smaller and tapped before splitting, that way a single grub screw will lock them together soundly.
© 2011 steamshed.com