moonlight machine
Diamond
- Joined
- Nov 19, 2007
- Location
- marysville ohio
A long story. .708 diameter steel shaft. The drawing calls out a .188 diameter hole, .430 deep .230 off center. All well and good. I do 25 and get about 6 back, the hole is too small but my size pin fits, wtf? I make a reamer guide block with a thru hole for the shaft and an intersecting hole for a reamer. I reamed the holes to .190, the guy that assembles these things says .190 is perfect. I get 25 more and do them to .190, I get a few back, too tight, now what? I Reamed them and delivered them and got 25 more and a dowel pin and a PO from the assembly guy. I do them to .192 as the assembly guy requested. I delivered a different item on Wed. And was told by the engineer, designer the shaft / pin assy. that the pin was supposed to be hammered in the normal way a dowel pin fits. Now I have about 30 of these shafts to reduce the hole diameter on! Just how am I going to do this? The only thing I can think of is a tool like a engine valve guide knurler but lots smaller. Or how about a 5mm thread forming tap? My fault for working with the assembly guy instead of the engineer, that won't happen again.