On Monday 06 April 2015 14:12:31 John Alexander Stewart wrote: > Hi all; > > Finally fixed the Oldham couplers for my X/Y axes on my latest build, > and was measuring backlash for inserting in the LinuxCNC ini file. > > This is for a "G0704" style of mill conversion, using one of those > kits from the old KeilingCNC place. > > X/Y/Z is 0.1mm, 0.24mm 0.1mm or, 2.5 thou, 9 thou, 2.5 thou.
The 2.5 thou is a bit loose, bigger balls in the nut perhaps? The 9 thou Y indicates either the thrust bearing at the solidly anchored end of the screw is duff, or perhaps not properly assembled. I was able to fix one of those in a cheap 16mmx5 Chinese screw on my toy lathes z by padding the outer ring separation with some half thou alu foil shims. Several of them stacked. Tricky to cut too. Seems to be holding up so far. > Is this considered "ok" or "out of range"? > > I've put these figures in my mill ini file, and it's currently running > the X and Y axes back and forth; will measure it again after a bit of > wearing in. > > Any thoughts/comments? > > (as an aside, Andy Pugh's feedback for spindle soft-gearing works a > treat - thank you again Andy) > > John. Let us know what you found John, it helps the next person with a similar problem. 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> ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
