Andy, You linked a site that sells ball nuts. Is it possible to change a ball nut only, assuming the screw has even wear? I realize that there are there are considerations for mounting and such, but I had the feeling that the screw and the nut were made as a set. Sorry to interject slightly off topic, I'm trying to educate. Thanks, Joe
On Sat, Feb 27, 2016 at 6:38 AM, Forum Deswysen <forum.deswy...@gmail.com> wrote: > Hello everyone, > > Before the servo failure, the precision of the machine was still in the / > 100 mm. > Certainly due to the weight of the head. > > I'll start by changing the cables defective. > Then we will dismantle the screw to examine. > > Thank you for your valuable advice. > > I will continue my work with linuxcnc. > I retrofit a tour with Jon card. > > Best regards, > > Pierre > > 2016-02-27 5:37 GMT+01:00 Dave Cole <linuxcncro...@gmail.com>: > > > On Fanuc drives you need to be careful as bad or worn motor cable > > insulation can easily take out a Fanuc drive. :-( > > > > Dave > > > > > > On 2/26/2016 5:07 PM, Todd Zuercher wrote: > > > I had to replace all of the servo power cables on a Fanuc 0i controlled > > gantry router (only 10 years old). The insulation had hardened from oil > > exposure, was badly cracked, and some of the conductors were broken. > Made > > for some rather erratic servo performance. > > > > > > ----- Original Message ----- > > > From: r...@superiorroll.com > > > To: "Enhanced Machine Controller (EMC)" < > emc-users@lists.sourceforge.net > > > > > > Sent: Friday, February 26, 2016 4:49:47 PM > > > Subject: Re: [Emc-users] Stake in ball screw Cincinnati Arrow > > > > > > I just replaced the power cables, not the encoder cables, and I didn't > > use shielded cable, I used the same stuff that is pictured. I used 12/4 > AWG. > > > > > > Rick > > > > > > > > > -------- Original Message -------- > > > Subject: Re: [Emc-users] Stake in ball screw Cincinnati Arrow > > > From: "Forum Deswysen" <forum.deswy...@gmail.com> > > > Date: Fri, February 26, 2016 4:31 pm > > > To: "Enhanced Machine Controller (EMC)" < > emc-users@lists.sourceforge.net > > > > > > > > > For Rick : > > > > > > A problem identified, thank you Rick. > > > I will replace cables. > > > > > > You changed the power and encoder? > > > > > > Given the color and the type of cable, I do not think this is the > > original > > > cable. > > > For power, did you use shielded cable? > > > What section did you use > > > > > > Andy: > > > > > > I have another problem: > > > > > > https://drive.google.com/open?id=0B5hmBjm5ot8NaTRkSlRWZVc4d2M > > > > > > I have a difference between 0.2-0.3 mm !!! > > > > > > 2016-02-26 20:43 GMT+01:00 Rick Lair <r...@superiorroll.com>: > > > > > >> You are seeing pretty much exactly the same issues that I was having > > >> with both of my machines, you have the A2100 control, and that was the > > >> fault that I was getting on my machine, before I replaced the cables. > > >> > > >> That is definitely physical damage on the X axis cable, but the > damage I > > >> am talking about is not visible,( someone step in if I botch this up) > > >> the insulation "breaks" down electrically, and as I take it, the drive > > >> senses this somehow, and shuts down. On our machine with the 850SX, we > > >> always saw X axis faults, when it was the Y or the Z being the fault, > > >> reason being, due to how the drive ready chain of logic in the drives > > >> was wired, it always saw the X drive as being faulted first. > > >> > > >> Your machine is a carbon copy of my Sabre, in respect to drives and > > >> controls. > > >> > > >> Rick > > >> > > >> > > >> On 2/26/2016 2:09 PM, Forum Deswysen wrote: > > >>> I asked for your help because I had an axis error "CR_AXES_RDY" > > >>> that caused the shutdown of the machine: > > >>> https://drive.google.com/open?id=0B5hmBjm5ot8NSFlVNFZ6OFFpOGc > > >>> > > >>> Before we heard creaking on the screw axis Z ??? > > >>> Therefore first I thought of a default of the screw. > > >>> It's not that. > > >>> > > >>> The servo failure comes and disappears after several cycles of the > > >> machine > > >>> ... > > >>> > > >>> Today for the re-started I removed the C3 logic supply connector on > the > > >>> drive X: > > >>> https://drive.google.com/open?id=0B5hmBjm5ot8NenExalJrM09ienc > > >>> > > >>> I do not understand where this intermittent failure? > > >>> > > >>> I want to know before purchasing new engines for linuxcnc > > >>> > > >>> 2016-02-26 19:59 GMT+01:00 Rick Lair <r...@superiorroll.com>: > > >>> > > >>>> What error are you getting on the control, what is the machine > > actually > > >>>> doing? > > >>>> > > >>>> I have the Sabre 750 which is a 1995 and has the A2100 control, and > we > > >>>> also have a Lancer 1250 with the 850SX control, which is from 1996, > > the > > >>>> Sabre has the Kollmorgen drive package, and the Lancer has the Red > Cap > > >>>> Fanuc drive package. On both machines I have had to replace all of > the > > >>>> servo motor power cables due to the wire insulation breaking down > > >>>> internally, constant servo drive failures, ON BOTH MACHINES, I had > > all > > >>>> the kollmorgen drives gone through, ( the problem started on the > > >>>> kollmorgens, then it started on the Fanucs) thinking that those were > > the > > >>>> problem, before I got my insulation resistance tester out and > checked > > >>>> the cables, sure enough the cables were bad, and I ordered an entire > > >>>> spool of cable and replaced all of them. > > >>>> > > >>>> Have not had a single problem in over 2 1/2 years with either > machine > > >>>> since I did that. > > >>>> > > >>>> Rick > > >>>> > > >>>> > > >>>> On 2/26/2016 1:46 PM, Forum Deswysen wrote: > > >>>>> I'm going to do tests with a comparator in the motor spindle. > > >>>>> Perfect, I no difference. > > >>>>> So all is well with the ball screw !!! > > >>>>> > > >>>>> https://drive.google.com/open?id=0B5hmBjm5ot8NNGdkYmo4WHRSSXM > > >>>>> https://drive.google.com/open?id=0B5hmBjm5ot8NanpxT1hzaGxsYTg > > >>>>> https://drive.google.com/open?id=0B5hmBjm5ot8Nb2s5RmxyN2xMUm8 > > >>>>> > > >>>>> The tolerance in the screw maybe just engine braking since the > > machine > > >>>>> was stopped > > >>>>> and the head placed on its transport support. > > >>>>> > > >>>>> Where does my axis error ??? > > >>>>> This is an intermittent fault > > >>>>> Not happy with this because I failed I could not complete an order > > for > > >> a > > >>>>> customer! > > >>>>> I had to do the subcontract. > > >>>>> > > >>>>> 2016-02-26 17:45 GMT+01:00 Rick Lair <r...@superiorroll.com>: > > >>>>> > > >>>>>> With about 95% certainty, all the milacron, lathes and machining > > >>>>>> centers, the ball nuts all sit in and bolt to the mounting block ( > > we > > >>>>>> have at least a dozen Cincinnati Milacron machines, mix of lathes > > and > > >>>>>> mills, from 1978 to 1996, and they all have the same > configuration, > > >> and > > >>>>>> I have worked on all of them). Usually 4-6 bolts on both the block > > and > > >>>>>> the nut cartridge. > > >>>>>> > > >>>>>> Rick > > >>>>>> > > >>>>>> On 2/26/2016 11:39 AM, Jon Elson wrote: > > >>>>>>> On 02/26/2016 08:00 AM, Forum Deswysen wrote: > > >>>>>>>> https://drive.google.com/open?id=0B5hmBjm5ot8NSDhCTmpsWkk3aVU > > >>>>>>>> > > >>>>>>>> > > >>>>>>> This 3rd picture seems to show you indicating you can rock > > >>>>>>> the screw forward/backward by 10 degrees. This would seem > > >>>>>>> to indicate wear and looseness in the ballnut, or possibly > > >>>>>>> in the mounting of the nut. it appears the block the nut > > >>>>>>> sits in is NOT the actual ballnut, but a mount for it. So, > > >>>>>>> you might see if the ballnut is no longer firmly mounted > > >>>>>>> inside that mount. Some nuts are threaded on the outside, > > >>>>>>> and screw into a threaded hole in the mounting block. Then, > > >>>>>>> there needs to be something that locks the nut into the mount. > > >>>>>>> > > >>>>>>> Others are bolted to the mount. These bolts could have > > >>>>>>> loosened, possibly by stretching. if loose, you might > > >>>>>>> replace the bolts. > > >>>>>>> > > >>>>>>> Jon > > >>>>>>> > > >>>>>>> > > >> > > > ------------------------------------------------------------------------------ > > >>>>>>> Site24x7 APM Insight: Get Deep Visibility into Application > > >> Performance > > >>>>>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > >>>>>>> Monitor end-to-end web transactions and take corrective actions > now > > >>>>>>> Troubleshoot faster and improve end-user experience. Signup Now! > > >>>>>>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > >>>>>>> _______________________________________________ > > >>>>>>> Emc-users mailing list > > >>>>>>> Emc-users@lists.sourceforge.net > > >>>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users > > >>>>>> -- > > >>>>>> > > >>>>>> Thanks > > >>>>>> > > >>>>>> > > >>>>>> Rick Lair > > >>>>>> Superior Roll & Turning LLC > > >>>>>> 399 East Center Street > > >>>>>> Petersburg MI, 49270 > > >>>>>> PH: 734-279-1831 > > >>>>>> FAX: 734-279-1166 > > >>>>>> www.superiorroll.com > > >>>>>> > > >>>>>> > > >>>>>> > > >>>>>> > > >> > > > ------------------------------------------------------------------------------ > > >>>>>> Site24x7 APM Insight: Get Deep Visibility into Application > > Performance > > >>>>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > >>>>>> Monitor end-to-end web transactions and take corrective actions > now > > >>>>>> Troubleshoot faster and improve end-user experience. Signup Now! > > >>>>>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > >>>>>> _______________________________________________ > > >>>>>> Emc-users mailing list > > >>>>>> Emc-users@lists.sourceforge.net > > >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users > > >>>>>> > > >> > > > ------------------------------------------------------------------------------ > > >>>>> Site24x7 APM Insight: Get Deep Visibility into Application > > Performance > > >>>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > >>>>> Monitor end-to-end web transactions and take corrective actions now > > >>>>> Troubleshoot faster and improve end-user experience. Signup Now! > > >>>>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > >>>>> _______________________________________________ > > >>>>> Emc-users mailing list > > >>>>> Emc-users@lists.sourceforge.net > > >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users > > >>>> -- > > >>>> > > >>>> Thanks > > >>>> > > >>>> > > >>>> Rick Lair > > >>>> Superior Roll & Turning LLC > > >>>> 399 East Center Street > > >>>> Petersburg MI, 49270 > > >>>> PH: 734-279-1831 > > >>>> FAX: 734-279-1166 > > >>>> www.superiorroll.com > > >>>> > > >>>> > > >>>> > > >>>> > > >> > > > ------------------------------------------------------------------------------ > > >>>> Site24x7 APM Insight: Get Deep Visibility into Application > Performance > > >>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > >>>> Monitor end-to-end web transactions and take corrective actions now > > >>>> Troubleshoot faster and improve end-user experience. Signup Now! > > >>>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > >>>> _______________________________________________ > > >>>> Emc-users mailing list > > >>>> Emc-users@lists.sourceforge.net > > >>>> https://lists.sourceforge.net/lists/listinfo/emc-users > > >>>> > > >> > > > ------------------------------------------------------------------------------ > > >>> Site24x7 APM Insight: Get Deep Visibility into Application > Performance > > >>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > >>> Monitor end-to-end web transactions and take corrective actions now > > >>> Troubleshoot faster and improve end-user experience. Signup Now! > > >>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > >>> _______________________________________________ > > >>> Emc-users mailing list > > >>> Emc-users@lists.sourceforge.net > > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > > >> -- > > >> > > >> Thanks > > >> > > >> > > >> Rick Lair > > >> Superior Roll & Turning LLC > > >> 399 East Center Street > > >> Petersburg MI, 49270 > > >> PH: 734-279-1831 > > >> FAX: 734-279-1166 > > >> www.superiorroll.com > > >> > > >> > > >> > > >> > > > ------------------------------------------------------------------------------ > > >> Site24x7 APM Insight: Get Deep Visibility into Application Performance > > >> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > >> Monitor end-to-end web transactions and take corrective actions now > > >> Troubleshoot faster and improve end-user experience. Signup Now! > > >> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > >> _______________________________________________ > > >> Emc-users mailing list > > >> Emc-users@lists.sourceforge.net > > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > >> > > > > > > ------------------------------------------------------------------------------ > > > Site24x7 APM Insight: Get Deep Visibility into Application Performance > > > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > > Monitor end-to-end web transactions and take corrective actions now > > > Troubleshoot faster and improve end-user experience. Signup Now! > > > http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > Site24x7 APM Insight: Get Deep Visibility into Application Performance > > > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > > Monitor end-to-end web transactions and take corrective actions now > > > Troubleshoot faster and improve end-user experience. Signup Now! > > > http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > ------------------------------------------------------------------------------ > > > Site24x7 APM Insight: Get Deep Visibility into Application Performance > > > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > > Monitor end-to-end web transactions and take corrective actions now > > > Troubleshoot faster and improve end-user experience. Signup Now! > > > http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > ------------------------------------------------------------------------------ > > Site24x7 APM Insight: Get Deep Visibility into Application Performance > > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > > Monitor end-to-end web transactions and take corrective actions now > > Troubleshoot faster and improve end-user experience. Signup Now! > > http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. 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