No learjet... :) Working very well - very happy with linuxcnc and mesa.
sam On 2/15/2013 1:19 PM, Pete Matos wrote: > 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. 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