The .625 part must fit into a machines bore, I am hoping to keep the maximum tolerance between the part and the bore to .0005, .0001 at most, Bar stock could only be used if I ordered precision ground stock. It will be plated with a Nickel/Teflon coating also.
In what way are you machining a bore thats tolerances are equal to a lathe.
A boring head trying to stay with in 10ths in out of the question, especially with wear, pocketing with a end mill is far from round, unless I had a 5 axis machine with its rotary axis, haven't used one but assume its as accurate as a lathe.
It couldn't be done in 1 op because there is a bore at both ends of the .625 bar, and the passages are all over, at most a over length piece of .625 precision ground under .0005 tolerance could be mounted in a 5 axis machine milled, drilled, bored(end mill w/ 5axis rotary)but then would have to be taken out and put in backwards to do the other bore.
Any other ideas, other than this. This is a tight tolerance medical device.
I have only used CNC Milltronics 3 axis mills and Mori, Daewoo 2 axis lathes.
BTW that Stama machine is $450,000.00 US. OUCH!, ok back to reality.  |