DIY CNC Mill ... Machine Upgrade for Styrocut

[Harpye]

Hi folks!

I don't know if this belongs to here but I upgraded my 3 axis gantry router
( retundant x axis ) with two z axis to get a hot wire cutter.

for software to export from cad directly is rare and expensive I generated my own tool - rater much effort to work with, but it pays.


"http://www.youtube.com/watch?v=w07yOWsflEE"]YouTube - DIY Hot Wire Cut

This ist a short video about the work with the machine.... ( you also can see the cutting part with the additional axis....

and this is the results out of about 60 hours of prototyping ... and 60 hours of programm.






all from 30KG M^3 EPP foam


HAnsjoerg

[tazzmale]

What software did you use?

thanks

[Harpye]

For CAD I use Rhinoceros
For CAM I wrote my own SW ( could be done by a simple Excel Macro or VBS)
just to append and merge two concrete pointclouds and create NC Code out of it ... For controller you could use every standard controller with the possibility of 4 axis control... depends on adaption of your Excel PP...


Hope that helps

[THend]

Can I see an example of your G-code? I am new to all of this, but have gotten to the point where I am ready to run G code.

As you are aware, when cutting a wing, each axis of the 4 has to move at different rates of speed. I don't know how to do this in g-code.

I've cut plenty with GMFC software, but I want the flexibility of g-code as there are so many things I could do with it.

Help!

[Harpye]

This code is very easy . for to use it in EMC or Mach you just have to setup a short header defining the dimensions property, feed and eliminate the constant contour offset..


then to be followed by axis names and coords like this

N100 G01 Z231.77805 A-70.487785 Y67.25591 X-55.434734

the coords are the next pointcomponent to reach on each axis ... the controller interpolates the speeds of the axis that the four coords parts are
reached at the same moment!!! - and then the next line / next target is aquired ..

The hard thing is not to work with the Gcodes but to create the data!!!

[romy]

hi Harpye

is possible to have your software (excel macro i hope!!!) for generate the 4 axis g-code?

thanks

bye

[Harpye]

Wouldn't work with another machine ... is written on some specialties of my CAD and the machine And I don't share because I don't want to take responsibility on any harm on health of the user or on the machene due to a axis crash!!!

HJ

[THend]

Harpye, thank you for the post. The lights have come on, and I understand pretty much what to do.

I had not realized the interpolation and speed for all axis, now I have a fair understanding.

Thank you again!

[Harpye]

No problem...

[stukatim]

Wunderbar!
That's awesome.
I would like to see more photos of your equipment too.
Thanks, Tim

[Harpye]

Ok the text is German, but you also could watch the pics..

http://freenet-homepage.de/Modellbau...e/CNCFRAES.pdf


http://freenet-homepage.de/Modellbauwahn/Home/HWCb.pdf