Hi all; Dave Cole got me started looking at our docs on screw compensation which I would like to be able to use on both the little monster and on the 11x42 Sheldon once I get it tightened up enough to worry about screw error.
That is goiung to be a project, all the bronze nuts are quite close to stripped out, the crossfeed nut for at least 1 time previous as the screw is a square thread, and looks good, but the nut has been retapped for a helicoil insert, and one installed, but its std 60 degree threads, looks like brass and nearly stripped again. Backlash is like .047" on that nut alone, while the compound looks like .034 or .035". But my requirements as I envision them are not limited to correcting a poorly made screw although that may be needed too, it is not the real target here. The target here, considering this is a lathe, is using the position along the bed as a lookup index into a table of x corrections to apply to effect a fix for a worn bed that has uneven wear front to rear, which would cause a Z taper to be cut when it is not a desired cut. IOW, a method to both correct taper from the head not being dead plumb, and the tilt toward or away from the work in the X axis as the carriage moves thru a worn spot on the bed while doing a Z only move. I've read the quite limited description in the wiki, but see no way to effect an X move dependent on the Z position. Is there any hope of doing this? Thanks. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
