Gallery, Projects and General > The Design Shop
lathe milling spindle?
bertie_bassett:
well after deciding to wait a while longer before getting a real mill I thought id resurrect this idea and get some parts on order.
amazingly took only 3 days to get an ER spindle and collet set from HK to my front door! and the rest of the bits turned up soon after.
best I get busy!
Manxmodder:
bertie,it will be a really interesting thread for the reading if you decide to go ahead and post your progress.
Whether a user has a dedicated milling machine,or not,there are plenty of times when a motorised universal lathe attachment like you're planning is the more versatile option....OZ.
PekkaNF:
Hi Bertie!
You may want to check the ER-collet arbor outer diameter. I ordered two 12 mm OD for nominal 12 mm ID bearings and it was a loose fit. Another looked "tight" but it was only a little carrot on the rear end. I know that folks have been using adhesive to stick the bearings on those.
Anyway those ER-collet arbors are soft, maybe next size could me turned down? from 1/2" to 12 mm or 16 mm to 15 mm does not sound that awful.
Pekka
chipenter:
When I made my toolpost grinder the bearings were good push fit on the spindle , and the run out was under .ooo1" , I haven't tried an end mill yet at 12mm shaft anything over 1\8" may put to much strain on it .
bertie_bassett:
Well I started making swarf a couple of days ago, had to modify the design slightly to get the bearings and motor to fit on the shaft length. Also added some registration between the parts to aid getting everything lined up. Now just waiting on some M4x 60 bolts to hold it all together.
Iv not actually measured the shaft but it slides easily into the bearings, so ill have to use some bearing fit anyway. I'll have to see how soft/ hard it is as I could do with tapping the end for a locking bolt. Surprisingly the shaft is also hollow so wont be as strong as it could be .
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