Kondia FV-1 Head disassembly

[PixMan]

I had taken one of my former vocational high school shop teachers over to the shop today for a tour, he stayed about 1 hour and I brought him home. Very impressed, he's almost 91 years old but sharp as a tack! I showed him the part I'm making, and asked him if he would finish the bore or mill the slot first. He & I agreed, finish the bore as 1045 steel is very stable. Once I got back, the first order of business was to relieve the shank on the only 6mm end mill I own. Done! (The photo taken after using it later.)



Here's a shot of the boring head at work. I had a 3/8" solid carbide boring bar just barely long enough to get the 60mm length bore done. If this didn't work, I would have had to buy something. I used a 6" Starrett No.20 solid square to line it up in the vise, but did nail it using my Interapid "tenths" indicator along the vertical surface. That was milled at the same time that the holes and other features were done, so it's square to the 16mm bore.


I bored it to .617" (give or take .001"), leaving about .012-.013" for the reamer. The reamer worked PERFECT, as far as I can tell. I don't have a 16mm pin or other gauge to check it, but I can't get the reamer in easily by hand after doing it so it's a tight fit.

Here it is, as finished with a Scotchbrite wheel.



And the backside that only Darren will see, and only until it's on the machine.


The slot and bore. I measuredthe slot with my Mitutoyo digital electronic calipers, getting between 6.01 and 6.04. If anything, it might have collapsed a tiny bit, but that's easy to fix with a "prydriver".


My only issue now is (apparently) the 14mm bore. I made a gauge pin this morning that measured 13.98 to 13.99 and it just barely starts at the slightly smaller end. :( I hope Darren can find a 14mm reamer. If not, I can try putting it back in the machine, indicate to zero and try reboring it. I'm sorry now that I didn't make that pin when I was ready to bore it, and taking out a "few tenths" is tricky. What say you, Darren, about the 14mm bore size?