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 On 8/2/21 2:59 PM, John Dammeyer wrote:
And here's the other side. Notice no stair stepping so with conventional milling it appears just enough of a load to not show edges. Really do need ball screws or maybe really tighten up the gibs. Maybe my backlash value entered into LinuxCNC INI file is off a hair? Anyway, this time the hole is centered in the outer round section. It was clamped the same way the last time. If it had moved then the RHS width would have also changed relative to the pretty close to round hole. Anyway. Lots to learn. John-----Original Message----- From: jrmitchellj [mailto:jrmitche...@gmail.com] Sent: August-02-21 2:10 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Something went wrong. It would be interesting for me to see how the part was held in the machine. --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 10:10 AM John Dammeyer <jo...@autoartisans.com> wrote:Same tool for both inner hole and outer profile. Same feeds and speeds and conventional, not climb milling. G40 -- No compensation. Only I,J in the file with a G17 preceding them. I could hide it considering what it's for and that no one will see it. But that's not really the point. I'd know. Will try it again today this time with entry exit for each pass rather than just the first and last. John-----Original Message----- From: Ralph Stirling [mailto:ralph.stirl...@wallawalla.edu] Sent: August-02-21 8:12 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Something went wrong. To elaborate a little more, your description sounds a bit like G42cutter compensation, described inhttps://linuxcnc.org/docs/2.8/html/gcode/tool-compensation.html . -- Ralph On Aug 2, 2021 6:12 AM, Ralph Stirling <ralph.stirl...@wallawalla.edu>wrote:CAUTION: This email originated from outside the Walla Walla Universityemail system.Cutter compensation enabled? On Aug 1, 2021 7:26 PM, John Dammeyer <jo...@autoartisans.com> wrote: CAUTION: This email originated from outside the Walla Walla Universityemail system.The milling operation was set up to always be climb milling. Zero pointfor the center hole and the outside perimeter was the same.And yet it milled more away on the LH side. The piece was tightly clamped and did not move. The width of theperimeter on the RHS is correct with the outer diameter at 45mmand the inner hole at 32.5mm. ie. At the RHS it's 6.25mm wide and on the LHS it's 4mm so it's themilling of the outer that shifted. The inner circle is pretty wellround. Not as good as a boring tool but still round. The inner hole was done after the outer perimeter. Very odd and I don't understand why. LinuxCNC and the motor drives didnot throw up any faults.S1100 Feed was 307mm/min with 1/4" 2 flute cutter. Total depth was 3.2mm and depth per pass 0.9mm. WD-40 and compressed air. John _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.nethttps://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7C7289f9725ae7402aa09e08d955b729a7%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637635067436312233%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiL CJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=BqEeOSHMeKIvwcjx14ixRok0Qp2bkvl52bCFZMI3L1k%3D&reserved=0 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users_______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users_______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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