Some of the machining, https://youtu.be/sXU0e2dmtwU
On Tue, Apr 21, 2020 at 8:17 PM Sam Sokolik <[email protected]> wrote: > || close... > > > > > On Tue, Apr 14, 2020 at 6:28 PM dave engvall <[email protected]> wrote: > >> I was just going to comment that if you have to circular mill then the >> initial use of a drill might be faster and safer. >> >> Dave >> >> On 4/14/20 4:03 PM, John Dammeyer wrote: >> > So if I don't have a center cutting end mill then it's probably a good >> idea to drill a hole so that the overlap criteria can be met? I guess plan >> the hole in the CNC part drawing? >> > >> >> -----Original Message----- >> >> From: dave engvall [mailto:[email protected]] >> >> Sent: April-14-20 11:37 AM >> >> To: [email protected] >> >> Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style. >> >> >> >> I've never had much luck with plunging end mills full dia. Probably >> >> works better with HSS , not so brittle. However, I plunge cut at 40% >> >> overlap and 15 - 18 ipm at 2200 with .25 carbide. Get fair life doing >> >> that. On the same rather flexible mill using a 1/2" rougher I'm good >> for >> >> .1" radial cuts. That works well when they overlap as in really rough >> >> profiling. In general I'm working with 1018 crs or A36.� Doing full dia >> >> plunge cuts it is easy to run out of stiffness and power with a 1 hp >> >> belt-driven spindle. >> >> >> >> I still have hopes of getting the Mazak operational again and that will >> >> be a game changer. >> >> >> >> Dave >> >> >> >> On 4/14/20 10:55 AM, Sam Sokolik wrote: >> >>> we have various forms of these type calculators that seem to work well >> >>> >> >>> >> https://www.ebay.com/itm/Vintage-Valenite-SPEED-AND-FEED-CALCULATOR-1981-Datailzer-Slide- >> >> Charts/164146745960?hash=item2637e89268:g:V~oAAOSwIGleb93M >> >>> On Tue, Apr 14, 2020 at 12:50 PM John Dammeyer < >> [email protected]> >> >>> wrote: >> >>> >> >>>> Thanks. The last bit of LinuxCNC milling with a 6mm carbide >> plunging into >> >>>> HRS broke two of them. I'm really not doing this right yet. So any >> >>>> examples of feeds, speeds and coolant are really helpful. >> >>>> >> >>>> John Dammeyer >> >>>> >> >>>>> -----Original Message----- >> >>>>> From: Sam Sokolik [mailto:[email protected]] >> >>>>> Sent: April-14-20 10:38 AM >> >>>>> To: Enhanced Machine Controller (EMC) >> >>>>> Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style. >> >>>>> >> >>>>> sorry - forgot a few things.. The mill was a resharpened at about >> .47". >> >>>>> (why it took 2 tries to get the size where I wanted it) the timing >> gear >> >>>>> was aluminum. >> >>>>> >> >>>>> On Tue, Apr 14, 2020 at 12:26 PM Ed <[email protected]> wrote: >> >>>>> >> >>>>>> On 4/14/20 9:53 AM, Sam Sokolik wrote: >> >>>>>>> now to upgrade the spindle encoder... >> >>>>>>> >> >>>>>>> https://youtu.be/VmWeXS6y-lg >> >>>>>>> >> >>>>>>> On Fri, Apr 10, 2020 at 9:00 PM andy pugh <[email protected]> >> >>>> wrote: >> >>>>>>>> On Sat, 11 Apr 2020 at 02:50, Ed <[email protected]> wrote: >> >>>>>>>> >> >>>>>>>>> I'm thinking gear hobs or single cutters. >> >>>>>>>> I have been thinking of making gear hobs this way for a while. >> What >> >>>>>>>> holds me back is that I am not sure that I know how to heat treat >> >>>> the >> >>>>>>>> hob to a state that will cut the materials that I want to make >> gears >> >>>>>>>> out of. >> >>>>>>>> >> >>>>>>>> -- >> >>>>>> Heat treating D2 is not a problem here and would work well if a >> little >> >>>>>> slower than M2 high speed. A higher temp furnace is in the plans. I >> >>>> keep >> >>>>>> some D2 on hand. >> >>>>>> >> >>>>>> I am being pushed by a couple customers to get my >> horizontal/hobbing >> >>>>>> machine finished and that will be able to do this kind of work. >> Soon I >> >>>>>> will be paging Andy to help with the setup. :-) >> >>>>>> >> >>>>>> Ed. >> >>>>>> >> >>>>>> >> >>>>>> >> >>>>>> >> >>>>>> _______________________________________________ >> >>>>>> Emc-users mailing list >> >>>>>> [email protected] >> >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >>>>>> >> >>>>> _______________________________________________ >> >>>>> Emc-users mailing list >> >>>>> [email protected] >> >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >>>> >> >>>> _______________________________________________ >> >>>> Emc-users mailing list >> >>>> [email protected] >> >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >>>> >> >>> _______________________________________________ >> >>> Emc-users mailing list >> >>> [email protected] >> >>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >> >> _______________________________________________ >> >> Emc-users mailing list >> >> [email protected] >> >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > >> > >> > _______________________________________________ >> > Emc-users mailing list >> > [email protected] >> > https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
