we made one... (saw blade.....) it has been working well - Seems to handle 40ftlbs.. :)
http://electronicsam.com/images/KandT/conversion/yaxis/adaptfinal1.JPG http://electronicsam.com/images/KandT/conversion/yaxis/adaptfinal.JPG http://electronicsam.com/images/KandT/conversion/yaxis/flexplate.jpg http://electronicsam.com/images/KandT/conversion/yaxis/yassembly.JPG sam On 2/15/2013 12:10 PM, Don Stanley wrote: > Hi Guys; > I have had terrific results with the double diaphragm couplings. > They don't change velocity during the rotation when misaligned. > They don't create friction when misaligned. Only a very slight torque to > flex the diaphragms. > They are very high torque tolerant. I rammed a small one to the stops many > times > with a 4000 inch ounce (20 ft lbs) torque motor during setup. > I am so partial to them, I made my own when I was unable to buy a small one > for > a confined space. It was rammed against the stops also and is still working. > > Hope this helps. > Don > > On Thu, Feb 14, 2013 at 12:19 PM, Billy Huddleston <[email protected]> wrote: > >> My understanding is you use nylon for compliant couplings (ones that need >> a bit of give or backlash) and the Acetal disks which are zero backlash. >> The only way they're not good >> with backlash is if you have a high degree of offset (unlikely in your >> machine) and you have a high amount of ware on the disk.. again, more ware >> if you have more offset... >> >> http://www.couplingtips.com/oldham-couplings/ >> >> Again, I like the fuse feature of the oldham's.. Just my two cents worth. >> :) >> >> >> On 02/14/2013 12:08 PM, Pete Matos wrote: >>> Billy, >>> I am fairly familiar with the oldham style couplers and they have >> some >>> advantages but I was under the impression they are less than great in the >>> backlash area. I want this machine to be able to transmit the full power >>> of these motors to the screws and do it without any backlash at >>> all....zero... There is enough backlash in any ballscrew assembly with >> the >>> thrust bearings and the ballnuts etc. I don't need to be adding to it >> here. >>> So far those disk type ones seem to offer some misalignment and offset >>> protection yet still allow zero backlash and the ones in the sizes I need >>> are stainless steel it seems. Dunno how much those cost but I am sure it >>> is not cheap. Peace >>> >>> Pete >>> >>> >>> On Thursday, February 14, 2013, Billy Huddleston <[email protected]> wrote: >>>> I like oldham couplers the best. If you have a run-away, the only thing >>> that breaks is the disk. Yes.. they can wear out if you have a bad a >> major >>> misalignment.. but, in general >>>> they last a long time. The also are easier to install because you can >>> install each hub on the shafts and then just insert the motor.. you >> don't >>> have to try to undo the hub if you >>>> need to remove the motor. I like them better than love-joy or spider >>> type too because those have a bit of give in them. Helical or Beam >> couplers >>> are nice for Routers, but, on >>>> this sized machine, you would need to use stainless steel ones, and not >>> aluminium, AND, you might still have windup issues.. >>>> Here is a good video on the disk acting as a "fuse" around the 1:04 >> mark.. >>>> Oldham Coupling | RULAND >>>> >>>> Thanks, Billy >>>> >>>> On 02/14/2013 11:21 AM, Pete Matos wrote: >>>>> Dave, >>>>> Honestly I have never heard of those before and I am lost when >> it >>>>> comes to all of the specifics of couplers for my mill. Those look >> pretty >>>>> cool but I did not like hearing of the broken split beam ones from that >>>>> other fellow. I was liking the looks of those. The disk type apparently >>> are >>>>> heavy duty and I am now investigating those models. Some of the >> websites >>>>> don't show pricing and that often means if you have to ask you cannot >>>>> afford it LOL.... What kind are they using in modern Machining centers >>>>> nowadays? Peace >>>>> >>>>> Pete >>>>> >>>>> On Thursday, February 14, 2013, Dave <[email protected]> wrote: >>>>>> If you can find them at a reasonable price (ebay?) >>>>>> >>>>>> The stainless steel bellows type couplings are very good even in high >>>>>> torque applications. >>>>>> >>>>>> The price is right! >>>>>> >> http://store.reuseum.com/Gerwah_AKD30_20mm_Bellows_Coupling_Motor_Coupler_p/000011213016B13Store.htm?gclid=CN2uyZ6VtrUCFYs7MgodIQUAEQ >>>>>> Dave >>>>>> >>>>>> On 2/14/2013 9:33 AM, Todd Zuercher wrote: >>>>>>> Helical beam are great for lower tourque aplications. But I was >> having >>>>> problems breaking them, and oldhams wear out much to quickly. I havn't >>> had >>>>> a flexible ss disk style fail on me (yet) but I have only been using >> them >>>>> for about a year on the machine that was giving me problems breaking >> the >>>>> helical beams. All of our realy big routers used the flexible steel >> disk >>>>> type or something simular OE. >>>>>>> ----- Original Message ----- >>>>>>> On 13.02.13 16:17, Pete Matos wrote: >>>>>>> >>>>>>>> I have actually looked at Mcmaster carr as I usually do but >> did >>> not >>>>> see >>>>>>>> what I needed. I actually like the looks of those cut bodied >> couplers >>>>> but >>>>>>>> I am not too sure of their misalignment ability. A quality oldham >> in >>>>> the >>>>>>>> right size should work fine I think....peace >>>>>>>> >>>>>>> I've never done any measurements, but figure that the "helical beam", >>> or >>>>>>> whatever you want to call them, couplings ought to have the lowest >>>>>>> backlash. An Oldham coupling must wear out, Shirley? >>>>>>> >>>>>>> Erik >>>>>>> >>>>>>> >> ------------------------------------------------------------------------------ >>>>>> Free Next-Gen Firewall Hardware Offer >>>>>> Buy your Sophos next-gen firewall before the end March 2013 >>>>>> and get the hardware for free! Learn more. >>>>>> http://p.sf.net/sfu/sophos-d2d-feb >>>>>> _______________________________________________ >>>>>> Emc-users mailing list >>>>>> [email protected] >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>>>> >> ------------------------------------------------------------------------------ >>>>> Free Next-Gen Firewall Hardware Offer >>>>> Buy your Sophos next-gen firewall before the end March 2013 >>>>> and get the hardware for free! Learn more. >>>>> http://p.sf.net/sfu/sophos-d2d-feb >>>>> _______________________________________________ >>>>> Emc-users mailing list >>>>> [email protected] >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>> -- >>>> Billy Huddleston Inner Vision >>>> >>>> *William Huddleston >>>> Inner Vision Development Corp* >>>> Office: 865.560.2752 >>>> Fax: 865.560.2703 >>>> >>>> http://www.ivdc.com >>>> *Development and Consulting... Simplified.* >>>> >>>> <http://www.facebook.com/pages/Inner-Vision-Development/120023721424> < >>> http://twitter.com/ivdc> <http://www.linkedin.com/in/ivdccorp> >> ------------------------------------------------------------------------------ >>>> Free Next-Gen Firewall Hardware Offer >>>> Buy your Sophos next-gen firewall before the end March 2013 >>>> and get the hardware for free! Learn more. >>>> http://p.sf.net/sfu/sophos-d2d-feb >>>> _______________________________________________ >>>> Emc-users mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>> >> ------------------------------------------------------------------------------ >>> Free Next-Gen Firewall Hardware Offer >>> Buy your Sophos next-gen firewall before the end March 2013 >>> and get the hardware for free! Learn more. >>> http://p.sf.net/sfu/sophos-d2d-feb >>> _______________________________________________ >>> Emc-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> -- >> Billy Huddleston Inner Vision >> >> *William Huddleston >> Inner Vision Development Corp* >> Office: 865.560.2752 >> Fax: 865.560.2703 >> >> http://www.ivdc.com >> *Development and Consulting... Simplified.* >> >> <http://www.facebook.com/pages/Inner-Vision-Development/120023721424> < >> http://twitter.com/ivdc> <http://www.linkedin.com/in/ivdccorp> >> >> >> ------------------------------------------------------------------------------ >> Free Next-Gen Firewall Hardware Offer >> Buy your Sophos next-gen firewall before the end March 2013 >> and get the hardware for free! Learn more. >> http://p.sf.net/sfu/sophos-d2d-feb >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > Free Next-Gen Firewall Hardware Offer > Buy your Sophos next-gen firewall before the end March 2013 > and get the hardware for free! 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