I've got a Warco round column mill 3/4HP motor and belt driven. Given that I'm using a sharp cutter at appropriate feeds and cutter speeds, what causes a poor finish when up or down milling with the side of the cutter?
Need to talk to speak to Warco really, but just maxed out during "normal" working hours.
From the trouble shooting guide:
"Shack of spindle and roughness of working surface has taken place during performance" - seems to describe the problem.
So I put the DTI on the collet chuck and whilst I can cause a deflection on the indicator, I can't find any "slack" or "shack" for that matter.
The guide has a couple of options on adjusting the spindle bearings which I can't decipher:
a) The gap of the spindle bearing too wide - Adjust the gap in proper of replace bearing with one.
b) Spindle loosening up and down - make two of inner bearing covers on the top tight each other. Do not overtighten two innner bearing covers with the taper bearing; It is OK as long as no gap between them.
Is it worth knocking out the chinese bearings and replacing with a couple of quality jobs from Ketan?
Steve