Sam.....HOLY SMOKES!!!! so you're the Guy with the huge Learjet and Trecker mill....Dayum that looks like a huge project. Hows she running for you now? I love that massive toolchanger and those big toolholders. That looked like a seriously competent machine and some real heavy iron. Nice job man. I bow to your prodigious retrofit skills....LOL Peace
Pete On Friday, February 15, 2013, sam sokolik <[email protected]> wrote: > 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 Machinin------------------------------------------------------------------------------ > The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, > is your hub for all things parallel software development, from weekly thought > leadership blogs to news, videos, case studies, tutorials, tech docs, > whitepapers, evaluation guides, and opinion stories. Check out the most > recent posts - join the conversation now. http://goparallel.sourceforge.net/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials, tech docs, whitepapers, evaluation guides, and opinion stories. Check out the most recent posts - join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
