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Topics - Xylotica

General Discussion / Auto-pilot
December 12, 2015, 07:04:22 PM
My fingers are still numb of keeping the KCP breaker and "Program start" buttons pressed to run my program in "T2" mode.
What is the trick to run a program automatically ?
I tried switching the "Mode selector switch" on "Automatic", pressed the "Program start" button, and.... nothing.

General Discussion / "Link" not working
December 12, 2015, 06:25:16 PM
Hi !

I made a little experiment with the Grasshopper image sampler , and something to please the kids at the same time : a hole pattern of "Link" (the main character in the "Zelda" video games) in a plastic sheet.
Everything went smooth, except that when I wanted to copy/paste my .src file which , incidentally , was called "Link.src", I got an error message stating something was wrong with the file name or it's extension.
Renaming it to "zelda.src", and I was able to copy my file.

Now I already know that I shouldn't use spaces or special symbols, but is there a list of "KUKA forbidden words" that I should be aware of ?

General Discussion / WISH : Play component with slider
December 04, 2015, 09:25:06 PM
Hi !

I wish that the Play component had a slider as well ; something like the Youtube interface :)
Or maybe this could be integrated under the "Analysis" graph...

General Discussion / Milling questions
December 04, 2015, 09:07:11 PM
At last !
Wall-E is operationnal, and I thought I'd start out with a little bit of wood milling.
I had this large log (which, it turns out had nails in it) and I made a wavy surface on one corner.
Then I thought I ougth to make multiple offsets so that I could "dig" layer by layer until I reached the actual surface I want to achieve.
So I just selected the surfaces one by one starting with the "highest" down to the "deepest" surface and used a "Divide surface" component.
I was quite happy until the mill went in a straight line between the final point of the first surface, and the initial point of the second surface, making a deep groove in the wood.
Then I realized that indeed I was a newb in all his glory.

But thinking about it, how could I add an intermediate point to avoid this since this is just one component ?
Should I use one "divide surface"component per surface and add an offset component between each ?
This would be impossible if I had a large number of layers to mill, wouldn't it ?

Then I realized another problem with the "divide surface"component : it forces to alternate between "Down milling" and "Up milling" since the mill will always go back and forth on the surface.
It was easy to see because in one direction, all went fine, and in the other, I could see large chips of wood being thrown all over the place.
What is the trick to make sure the milling is always ,say, "Up milling"?


General Discussion / Plasma torch anyone ?
November 29, 2015, 09:05:12 PM
I will soon have a plasma cutter with a CNC torch for Wall-E to play with.
Cutting pipe fittings to make funky tubular structures will be a blast !

Would anyone like to share his experience with such a setting ?
In particular, I have no idea how to trigger the toch using the KRC2 controller.
I fear that the plasma cutter saleman will only have experience with conventionnal CNC tables.

General Discussion / Work table
November 10, 2015, 11:36:16 PM
I just watched a video about strong hand tools :
This gave me the idea to make a 25mm thick steel laser-cut table with ø28 holes to place my fixtures.
It could have a pie-slice (76°) shape to follow the robot's work area.
With 3 such tables, it would cover the entire angular scope of axis 1.

Comments ?
Support / And now... electric problems
November 10, 2015, 08:30:03 PM
At last, I got Wall-E on a proper pedestal, made accessories to move it around with a Fenwick, and welded the mill fitting :

But now, as soon as I try to move the arm, it activates the breaker of the power outlet.
I already had similar trouble on another outlet, but at least I was able to move the arm.

I can hear the breaker shut off the power outlet as soon as I press one of the enabling switches on the back of the control panel.

Could it be the outlet's breaker which is too weak ?
I really hope it's not a nasty short-circuit hidden deep in the innards of the robot or the console...

Support / Collision check not working
October 13, 2015, 11:16:53 PM
Hi !

I am fooling around with a milling definition here, and I thought I'd make a mesh out of the surface I'm supposed to follow and use that mesh as a collision reference.
It turns out the collision check does not detect a particular moment where the robot's wrist hits the surface.

I tried also by making a mesh from the surface in Rhino and referencing it in GH.
Then I thought maybe the mesh had to be a closed volume, but this didn't work either.

What button did I forget to press this time ?


Support / File description cannot be processed
September 25, 2015, 04:22:17 PM
It looks like I'm going to climb this ladder one support message after the other...
Now that I can access my USB drive (Johannes, I indeed needed to be in the administrator user group), the pendant will not allow me to copy my .src file to the kuka program folder.
The error message is "File description cannot be processed".

Is there a " kuka for dummies book somewhere " ?

Support / Floppy ? / Network Share
September 18, 2015, 12:37:13 PM
Newb problem again.

I was all excited that I would load and run my first program on the robot, and then realized that the only input in the pendant's interface was the floppy.
God ! I threw all my floppies away 15 years ago !
What is the trick to access the USB ports on the KRC2 ?

Thanks !
General Discussion / KRESS mount
September 16, 2015, 11:16:50 PM
I am working on a mounting bracket for my Kress spindle.
This is 5mm thick sheet metal.
The offset of the tool and the shape of the mount should guarantee that there will never be a collision with the robot, even in the extreme angles of axis 5.

Comments welcome.

General Discussion / Home made stand for a KR6
September 14, 2015, 09:49:47 PM
I am designing a stand for my KR6-arc, and I'd like some advice from anyone who has done that already.
Maybe a kind of twisted prism like on the attached image, if I can't get my hands on a large pipe segment.
I would like to run a FEM analysis on this part, but I don't know what kinds of forces and torques it will be subjected to.
Any ideas about that ?

I want to mill the surface of a pipe following a curve (in red), but also orient the tool towards an inner curve (in white).
If I use the white curve as the "Guide", the tool is on the wrong side (Read : inside the pipe).
I had to extend the surface of the end of the pipe outward to create the green curve to use as the "Guide".
Could there be an option to consider the "Guide" curve as a "target" rather than have the tool axis go through it ?

Secondly, my base curve is a closed curve, and I would like the last frame to be the same as the first so that the tool goes all around the curve, and not stop one step before the end.
Could there be an option added for this ?

Also, I couldn't figure up the role of the "Orient" geometry, although I see it does "something".
Is there a simple drawing somewhere explaining how this "Divide curve" component works exactly ?

Thanks !
Hi folks !

This is my first post here, and I'm excited to get in contact with the members of this community.
I have an architecture + engineering background, specifically in steel and wood structures and tensile membranes.
My robot is called Wall-E ; it's a KUKA KR6-Arc, and I have yet to fire it up.

I recently bought a KRESS 1050 FME-1 spindle with a mount from Damen CNC, and now I need to design the vertical plate that attaches to the robot's flange mount.
This is what the tool looks like from the KUKA|prc library :

And this is the Damen CNC mount plus the vertical plate that I have designed:

I was wondering why I should raise that vertical plate so high above the robot wrist.
Is it to protect the spindle ?
Is it to eventually attach another tool that would require this ?

Also, why place the tool so low ?
Is it to give a bigger clearance when milling in recessed areas ?

As I'm a complete newbie, any advice on this topic would be greatly appreciated.