Messages

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 !

Thanks Johannes,

very nice video indeed.
So basically, this is detrimental to precision and speed of the tooltip.
I suppose that I can avoid this by placing the object to be milled in a location which forces the axii to be angled.

Hi Johannes,

***Newb alert***
What is so wrong with having the axis 4 and 6 coincide that someone called it like the heart of a black hole ?

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.

Cheers,

I applied all the loads simultaneously on my FEM model.
Stress in not a concern, and max displacements are less than 0.2mm

That should be fine...

Height of the stand is 700mm ; weight : 67 kg.

Cheers,

Hmmm... Load values, but no certified, normed, approved and stamped  load combinations ?
How un-German... :)

Anyways, thanks for the data, I'll try to mix it somehow.

Hello Johannes,

and thanks for your answer.
Any idea how I should combine those efforts to create load cases ?
In construction, for example, you would have to perform analysis with :
1.5*SNOW
1.5*WIND
1*SNOW+0.7*WIND
etc...

Factors above 1 are security coefficients which are not relevant if the given values are already "Extreme" values.
But it is important to know what combinations of forces and moments are likely to occur simultaneously because they can yield unfavorable cases.
For example, 0.5*Fh+0.5*Mk can be worse than 1*Fh.

Cheers,

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 ?

Cheers,

I guess I hid KUKA|prc components until I got rid of the frames which were obscuring my pipe, therefor, this is the GH preview color.
May I add that I have experienced many crashes when ,say, setting a new base curve.
I just installed the very latest version, and it hasn't crashed since.

Is there anything I should be attentive to in order to avoid crashes ?

Cheers,

Hello Johannes,

and thanks for your VERY quick reply.
Nothing better to do on a Saturday afternoon , huh ? :)

I understand how you manage to work-around the problem, but wouldn't it be nice to use the more compact and friendly "Divide Curve" component that you made, provided that it had an option to "flip" the orientation of the tool  ?

Also, your solution does not solve the issue of not "closing the loop" : if this trajectory was supposed to cut the pipe, then it would leave a little segment uncut (if I may say so).

Here's a little video of the cutting process : https://youtu.be/Sv9cxD6xQeM

Cheers,

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 !

Thanks Johannes,

Definitely helpful answer !

Making multiple sets of holes in my vertical plate could allow adjustment of  the flange / tooltip distance I guess...

I noticed that there are 5 taped holes and a non-taped one in the robot's flange.
I suppose that this is a way to avoid fitting a tool upside-down.
But should I add a cylindrical boss on my vertical plate to increase the shear resistance, or should I just ignore it and put 5 screws ?
What do the smart guys do ?

Cheers,

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.

Cheers,