Hey guys, This is purely a machining question.
I'm currently retrofitting the lead screws on my home built cnc router with ACME thread screws. Yes, I run EMC2. The screws are about 3 feet long by 3/8 in and need to be turned a bit at either end to fit the stepper motor coupling and bearing (at the other end). I have a Craftsman professional lathe (much like an Atlas) in decent shape. After turning both ends to size, I discovered the screw became warped (about 37 thousandths, a noticeable amount). I don't think the screw was warped before, although I'm not 100% sure. That leaves me and the way I held the screw in the lathe (I think). I held the screw by wrapping some copper around the threads and clamping that portion in the chuck, leaving the remainder of the screw sticking out the left side of the lathe. The screw wobbled a bit but nothing that looked too bad, at least to me. Could this have warped the screw? More importantly, how should the screw be held in the lathe to prevent warping or other damage during machining? Thanks! -Rich ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
