I'm machining some parts approximately 98in long 5.870 OD/4.740 ID(4130ht28-32rc) I have had them heat treated, pack/bored/honed, then stress relieved. chucked/steady rested/tailstock in. when making a cut the part warps out no matter what DOC,SF I run. Wall thickness is very critical on these parts. What can I do to prevent this? Is there a fixture i could make for the ID to prevent this movement?
Thanks
KLUGSTER |