Smithy Midas 1220 LTD - Manual (Page 81)

Figure 17.3 Spring collets, which fit into the mill spindle, hold straight-shanked end mills.
Adapters
Adapters mount various types and sizes of cutters on the spindle. Arbor adapters mount
face mills on the spindle. Collet adapters mount end mills on the spindle. Taper-shank end
mills mount in adapters that have holes with matching tapers. If the taper shank on the
tool is smaller than the hole in the adapter, put a reducing sleeve into the adapter. Shell
end mill adapters come in different sizes to accept different sized shell end mills.
To remove arbors or adapters held with a drawbar, follow these steps:
1. Loosen the locknut on the drawbar about two turns.
2. Hit the end of the drawbar with a dead blow hammer, releasing the arbor or adapter
from the spindle hole.
3. Hold the arbor or adapter so it won't fall out of the spindle when the drawbar is
removed.
4. Unscrew the drawbar and remove the arbor or adapter.
Figure 17.4 End mill holders also receive straight-shanked end mills.
Your machine includes a tapered drift for removing tapers. Follow these steps:
1. Remove the drawbar.
2. Extend the mill spindle to expose the outer taper drift slot.
3. Rotate the spindle to align outer and inner taper drift slots. You will be able to see the
end of the adapter through both slots.
4. Insert the drift in the slot.
17: Milling
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