yah.. It has a lot of possibilities.. (on the mill) I was using it to find a rough center of a hole by turning the spindle and letting the the tool tip describe a circle. Also - inside turning operations on a mill... (slow of course..)
On Tue, Sep 1, 2020 at 4:36 PM Gene Heskett <[email protected]> wrote: > On Tuesday 01 September 2020 11:37:47 Ralph Stirling wrote: > > > I've been quite mesmerized by Sam Sokolik's videos > > of his synchronized spindle/X axis lathe work. It just > > occurred to me that this might be handy for doing > > four-jaw turning. You could just stick your work in the > > chuck approximately centered, touch off two 90 degree > > offset points, and have the "virtual" centerline offset > > appropriately from the actual center of rotation. > > > > That would eliminate the tedious task of centering > > the stock in the four-jaw chuck. Some more hal > > coding or trajectory calculation required, of course. > > > > -- Ralph > > Luv the idea Ralph, but that would really warm up my vfd, running that > slow. I have it set to shut down at about 9.5HZ but even then 30 minutes > doesn't overheat the motor because I also have a current limit > programmed to match the nameplate FLA. And I think that would prompt me > to replace the nema 24 motor on my x with one of the 3 phase step driven > nema 23 servo's of 2NM. I have a 3NM one of those replacing the > 1600oz/in that was on the z, and its moving 2x faster now. But the 3NM > is about 10mm too long to fit in the x location and the encoder would > not fit on the back of the motor without plowing a huge groove in the > Sheldons bed. Not gonna happen. > > Thanks Raplh. > > > ________________________________________ > > From: Sam Sokolik [[email protected]] > > Sent: Monday, August 31, 2020 11:07 AM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Because the hardware store was 4 miles > > away... > > > > CAUTION: This email originated from outside the Walla Walla University > > email system. > > > > > > I am adding poor man's trajectory planning.. (not really planning) > > > > adding the ability to add a tangent-tangent radius to the polygon.. > > This is so there isn't an abrupt change in direction. > > > > The one pic shows a 0 radius vs .020 radius... The over shoot for the > > given spindle rpm is all but zero. > > > > On Thu, Jul 16, 2020 at 11:22 PM Sam Sokolik <[email protected]> > wrote: > > > some close up-ish with slow mo... > > > > > > https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fyo > > >utu.be%2F_S_bGAuTN0s&data=02%7C01%7Cralph.stirling%40wallawalla.e > > >du%7C0265e9685d1045bffa2d08d84dd8d507%7Cd958f048e43142779c8debfb75e7a > > >a64%7C0%7C0%7C637344940967684006&sdata=KQJ%2FlpumQz5iWRCzjlFJAiHU > > >uZxu3%2B70Ino%2BDmeSS%2Fw%3D&reserved=0 > > > > > > On Tue, Jul 14, 2020 at 3:13 AM andy pugh <[email protected]> wrote: > > >> (Off topic, but interesting) > > >> > > >> On Tue, 14 Jul 2020 at 02:11, Gregg Eshelman via Emc-users > > >> > > >> <[email protected]> wrote: > > >> > Used to be mechanical drive attachments for some lathes to move > > >> > the > > >> > > >> cross slide in and out for cutting threads for taps. > > >> > > >> Yes, Holbrook used to offer a sub-speed head (clamped to the bed, > > >> connected to the spindle, output a speed lower by a factor of 6 on > > >> a coaxial secondary spindle nose) and a set of relieving equipment > > >> (special top slide , back power shaft, sets of cams) > > >> > > >> A mesmerising device for other lathes was developed by the model > > >> engineering community, the Eureka attachment. > > >> https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fw > > >>ww.youtube.com%2Fwatch%3Fv%3DU_kqi3dqr50&data=02%7C01%7Cralph.st > > >>irling%40wallawalla.edu%7C0265e9685d1045bffa2d08d84dd8d507%7Cd958f04 > > >>8e43142779c8debfb75e7aa64%7C0%7C0%7C637344940967684006&sdata=YyK > > >>O%2F3Z2GDN3fsitUe%2B8pJgdoib%2Fs4Paz7wWTVXXVAo%3D&reserved=0 > > >> > > >> It almost seems like a shame to do it with CNC now. > > >> > > >> -- > > >> atp > > >> "A motorcycle is a bicycle with a pandemonium attachment and is > > >> designed for the especial use of mechanical geniuses, daredevils > > >> and lunatics." > > >> — George Fitch, Atlanta Constitution Newspaper, 1912 > > >> > > >> > > >> _______________________________________________ > > >> Emc-users mailing list > > >> [email protected] > > >> https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fl > > >>ists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=02%7C01 > > >>%7Cralph.stirling%40wallawalla.edu%7C0265e9685d1045bffa2d08d84dd8d50 > > >>7%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637344940967693998&am > > >>p;sdata=T%2BZi6NNszQWzOak8rHXMnlDT%2FRUu8QQCP0mZYkAqsdk%3D&reser > > >>ved=0 > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist > >s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=02%7C01%7Cral > >ph.stirling%40wallawalla.edu%7C0265e9685d1045bffa2d08d84dd8d507%7Cd958f > >048e43142779c8debfb75e7aa64%7C0%7C0%7C637344940967693998&sdata=T%2B > >Zi6NNszQWzOak8rHXMnlDT%2FRUu8QQCP0mZYkAqsdk%3D&reserved=0 > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > 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
