ER32 Collet Chuck - Mounting Holes
The clearance holes for M6 cap screws were finally done. I've conquered the fear of having misaligned holes with the help and encouragement from various people. This operation may be easy for many readers out there, but I always have problem of getting the clearance hole matching up with the screw holes. Enough "talking", here are the pics:
Below is a short vid showing that the job spinning. Not too bad, I suppose.
I'm rather happy with the result of today's session. In my next session, after my Bangkok trip, I'll be shortening the cap screws to the required size and trim off the excess on the nose to get ready for threading. The taper bore will be done last.
31/5/2012 04:23:31 am
Wong, that does look good to me. Runs nice and smooth, any slight run out will be cleaned up well when you finish the machining. As for drilling the holes, if you have a rotary table you can drill some very large bolt circles on the Sherline sized machines.
31/5/2012 04:46:02 am
31/5/2012 06:42:39 pm
On things like this when I know the center will be bored out, I just drill a hole for a bolt that will screw into the rotary table. Make it a little over size so I can tap the part around to center it. Tighten it down and re-check the centering.
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