Boy oh boy is 150ipm ever fast on the Y axis when there's only about 7" of travel. I think I may just throttle back jogging to 40ipm but allow rapids the full 150.
Here are some links to photos. The Mill is equivalent to the Grizzly G3616 but from House of Tools in Canada. No longer around nor is the mill. Excuse the mess. The starting point: http://www.autoartisans.com/cnc/YAxisCastings-1.jpg Instead of a pair of ball thrust bearings and no real radial load bearing I switched to angular contact bearings. http://www.autoartisans.com/cnc/YAxisMachining-7.jpg I turned some spacers and used the original nut to compress the works. The bearings are arranged so I can reef on the nut without a problem because preload on the bearings is done with a large spacer that presses on the outer race. The inner races are tight together. 4:1 XL 0.50 pulleys and belts. Motor is 90V, 7A DC Servo max 3000 RPM. 250 line encoder, leadscrew is 5 TPI. http://www.autoartisans.com/cnc/YAxisConversion-3.jpg I haven't decided if I should add an oil hole or just grease the bearings. Greasing seems to work on cars for thousands of miles. And finally the messy picture. Monitor, Keyboard, HP_UHU Driver on the top, Power supply and BoB on the bottom. Beagle with Xylotex cape and USB hub are also visible. http://www.autoartisans.com/cnc/YAxisConversion-2.jpg The Knee has a Gecko stepper driver. The X axis will have the same Servo but with 3:1 pulleys since it's lighter and has to move further so here faster will be better. And obviously I want to build up my Homann Designs MODIO board into an MPG Pendant. I've seen it operate with MACH3 and it's very responsive so should be for LinuxCNC too? Anyway, limit and home switches are next. Then the X axis patterns and castings. John > -----Original Message----- > From: Dave Cole [mailto:linuxcncro...@gmail.com] > Sent: October-10-17 3:49 PM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] MachineKit on the BeagleBone Black > > John, > Let me save you some time.� Unless you are retiring in the next couple > of years and swearing off everything CNC...convert to LinuxCNC now.��� > If you are not happy with the performance on the BBB right now.� Wait > for a couple of years.�� It will get there via a different set of > hardware or a different hardware version. Mach3 will not.��� Mach4 > might... but you know more than me about that. > If you want a tool that "just works" yet can be extended "reliably" via > software,� LinuxCNC or Machinekit is where it is at. > If you want both Mach3 and LinuxCNC, dual boot your PC. > You won't regret it. > > Dave > > On 10/10/2017 3:34 PM, John Dammeyer wrote: > > > >> -----Original Message----- > >> From: Dave Cole [mailto:linuxcncro...@gmail.com] > >> Sent: October-10-17 11:17 AM > >> To: emc-users@lists.sourceforge.net > >> Subject: Re: [Emc-users] MachineKit on the BeagleBone Black > >> > >> Hi John, > >> > >> I am surprised that you are still talking about Mach3. ? I thought that > >> Mach3 was suppose to be obsoleted by now > >> and replaced by Mach4. ? What happened?? I've been out of the Mach3 loop > >> for a while. > >> > >> Dave > > Hi Dave, > > Although the desire to rant here is really tempting I'll put a gag in my > > mouth > and tie my typing fingers together. Suffice to say: > > I have a Delta 14" BabdSaw from 1939, A South Bend Heavy 10L from 1942, > most of my other wood working tools are all at least 20 years old now. Even > the ELS I designed and use on the SB Lathe is 10 years old. > > > > These are all "_Tools_" not an "_Experience_" like Apple, Microsoft and the > Cell phone companies would like you to believe. > > > > MACH3 runs my CNC Router and can read files from AlibreCAD and AlibreCAM > as can the cheap Arduino based 3D printer attached to a Pi2 which is attached > via WiFi to Octoprint. Both effectively are tools that make parts for my work > and my hobbies. > > > > Since MACH3 with a 1.16GHz Athlon with 1MB memory runs the CNC router > and responds to keyboard arrows almost instantly it's the benchmark for all > other CNC systems. Don't really need a new MACH4 "_Experience_" that is > hardware licensed to my PC. > > > > Since I'm space constrained in the workshop I was really hoping I could use > > a > small processor to run CNC on the mill. That the Beagle can't do this to > the > same extent as MACH3 means that I have to consider finding space for a PC. > And if I have to find space for a PC it only makes sense to have the same user > interface I have on my CNC router. Then I can spend more time using the tool > compared to having an experience. > > > > So I keep reminding myself before I fall off that cliff of spending many > > hours > trying to accomplish something (sadly been there many times) that these are > tools that are supposed to work for me. > > > > John > > > > > > > > ------------------------------------------------------------------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
