This part is driving me nuts on the best way to make it. It's so simple a part, it seems.
The tools I have available are a 2-axis CNC lathe and a 3-axis VMC. I need to make maybe 200 a month or so.
There are 2 parts.... As you can see from the pics it's just a basic ring clamp that goes on a bar. The ID of the ring is 1" and the OD is 2". There is a top and a bottom. The idea is they clamp around a 1" bar and 2 socket head cap screws go in and hold it together - then something flat can be mounted on the top.
I was thinking the most efficient way may be to start with 1"ID/2"OD tubing, mount a section in my milling machine and just use a big honking face mill to mill off the top half. Then I could come up with a fixture maybe using mitee bite clamps so I can machine the holes from the top on the one part and the holes + flat on the top on the other part.
But cutting them out on the mill would be a bit of a PITA.
Or I could cut the "C" shaped parts out of 1/2" plate but then how to fixture them to cut them out? That would be a PITA too.
Or I could turn rings on the lathe that were already neatly sized, but then I'd need a fixture to hold them while I face mill them in half, then I'd have to turn them over to machine the other side.
It seems like such a simple part... any ideas?
Oh, and on the one with the flat, I can add a counterbore to the through-holes on either side (because I am sure drilling from the top without a counterbore would cause the drill to wander and break).