Thanks Dave, Good information. Joe On Sat, Feb 27, 2016 at 10:04 AM, Dave Cole <linuxcncro...@gmail.com> wrote:
> The nut and screw are matched to each other and then they fit the nut to > the screw with the proper sized balls. > Usually they are purchased together as a set and you really don't want > to take them apart unless it is necessary. > You can have screws reground - I think that Thompson and Nook others do > that in the US. > I suspect that if you have a "standard" screw you might be able to fit a > new nut to it, but then if the nut is shot, generally the screw also > needs help. > So what usually needs to be done is that the nut and screw need to be > reconditioned as a set. > I worked on a machine that had a bad screw and they got a quote from > Thompson or Nook to have the screw and nut reconditioned and I think it > was about half what a new > set would have cost. > > Dave > > On 2/27/2016 9:47 AM, Joe H wrote: > > 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. 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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