First, if you have a lot of backlash in the X & Y movements, you should avoid climb milling. When the cutter grabs the work, it will take up the backlash (and maybe break the cutter) As for the way you have the work in the vice, I would ditch the round stock, and clamp it lower in the vice. I think you have a lot of flex in the setup pictured! Keep the horizontal part of the part within about 1/8th of an inch of the top of the vice jaws. If you really want to use the round, flip the part around (the z axis), put the round stock so that it clamps the stock very close to the top of the vice jaws. That will minimize the flex.
--J. Ray Mitchell Jr. “I predict future happiness for Americans, if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.” THOMAS JEFFERSON On Mon, Aug 2, 2021 at 4:43 PM John Dammeyer <[email protected]> wrote: > Hi Dave, > Things have gone from not too bad to worse. > > My Drill Chuck in the TT Holder and a pencil held for doing the tracing > has vanished. Can't find it anywhere. I suspect it's now with the Dr. > Who "Key to Time" box set along with a couple of other DVD movies that also > vanished a few months back. > > I've been told the only way to find the existing DVDs is to buy new ones. > Looks like I might have to order a couple more TT holders and drill > chucks. I wanted a few more anyway but really. This is ridiculous. > > With respect to climb verses conventional I did the whole thing as > conventional but if my X axis table can be moved when the milling cutter > engages the work (due to backlash) then I'm kind of hooped. > > John > > > > From: dave engvall [mailto:[email protected]] > > HI John, > > If I'm reading correctly it is� OK with conventional milling but off > > with climb. Too weird!� I guess the next step would be to mill it > > conventional and overlay with climb and see what happens. Maybe� a bit > > of layout dye between runs. > > > > The alternative would seem to be that Murphy and all his cousins have > > invaded your shop. ;-) > > Where is the can of murphycide? > > > > Dave > > > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
