Very nice indeed - I like pneumatic centering mechanism. However I am wondering why you didn't make it with 4 grips so you could clamp quadratic pipes?
Rectangular pipes are probably out of reach to handle with this machine? Regards On Fri, Jun 16, 2017 at 2:56 PM, N. Christopher Perry <[email protected]> wrote: > > > On Jun 16, 2017, at 12:50 AM, Kurt Jacobson <[email protected]> > wrote: > > > > Hello all, > > > > Some of the videos linked in the "LCNC TED Talk style" thread reminded me > > of a CNC plasma tubing notcher I designed and built a few years ago > while I > > was in school. I think some of you might be interested. > > > > As built the notcher has a capacity of 4". It consists of a rotating > > pneumatically actuated chuck and a horizontal linear axis that moves the > > torch to and fro along the axis of the tube. > > > > The fab shop I designed the notcher for usually had the client provide > them > > with CAD generated templates, so one of the goals of the project was to > be > > able to scan in these templates and generate G-code so multiple notches > > could be cut. I used a simple probing sub and a fiber optic sensor in > place > > of the plasma tourch to scan a template warped around a tube. This was > slow > > but worked well and was reliable. > > > > For cases were a template was not provided I wrote a small MATLAB program > > and GUI to generate the g-code given the joint parameters. > > > > I initially used Mach3 for the control, but then I switched to GRBL with > a > > custom interface so they would not have to keep a Win XP PC with parport > > around just to run the notcher. What I would love to do is rework it to > > have LinuxCNC on a BB or RPi on board with a small touch screen. It would > > be fairly easy to write a custom interface so machine control, template > > scanning and G-code generation could all be done from one interface. > > > > > > A google photo album of the notcher build: > > https://goo.gl/photos/RcgPV2fRfD5ChmQ39 > > > > > > Early video of notcher in action: > > https://youtu.be/uZP3JNNKDLQ > > > > Following a scanned template: > > https://youtu.be/DsCuw9TPBeY > > > > Scanning a template: > > https://youtu.be/QfmZeYXlU6E > > > > Chuck self centering small diameter: > > https://youtu.be/5S8kO3-p4vs > > > > > > TubeNotch MATLAB program: > > https://github.com/KurtJacobson/TubeNotch > > > > > > Regards, > > Kurt > > That's some very nice work! > > N. Christopher Perry > > ------------------------------------------------------------ > ------------------ > 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 > [email protected] > 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
