Recent posts
#11
General Discussion / Re: Toolpath from solid modeli...
Last post by Johannes @ Robots in Architecture - February 07, 2023, 08:16:41 AMGood Morning,
You are basically asking "how do I program non-planar 3D printing for generic solids" which is a question that is not fully within the scope of a forum. But I'm happy to share some code to put you in the right direction. It uses Pufferfish to tween between two surfaces. Just note that with trimmed surfaces you run into some issues, as you are going to see. Also, the code is not made for a solid, but two surfaces. With a solid you would need to somehow define how those non-planar divisions are flowing.
Hope it helps!
Best,
Johannes
You are basically asking "how do I program non-planar 3D printing for generic solids" which is a question that is not fully within the scope of a forum. But I'm happy to share some code to put you in the right direction. It uses Pufferfish to tween between two surfaces. Just note that with trimmed surfaces you run into some issues, as you are going to see. Also, the code is not made for a solid, but two surfaces. With a solid you would need to somehow define how those non-planar divisions are flowing.
Hope it helps!
Best,
Johannes
#12
General Discussion / Toolpath from solid modeling
Last post by 3d-factory - February 07, 2023, 07:50:59 AMHi, I am new to kuka prc and trying to find complicated toolpaths for a 3d print with this.
I would like to have examples of grasshopper file for the attachments.
I want to know how to get the toolpath like right figure in test 1 When I import Solid modeling like left one.
Here are two attahced samples of Rhino file for the requested examples.
Thank you.
I would like to have examples of grasshopper file for the attachments.
I want to know how to get the toolpath like right figure in test 1 When I import Solid modeling like left one.
Here are two attahced samples of Rhino file for the requested examples.
Thank you.
#13
Support / Re: Safe Plane Broken?
Last post by austinsamson - February 06, 2023, 08:01:14 PMWe ended up just doing our own custom safe planes and it works great - but I'll re-visit this when I have some extra time to get into it -
#14
Support / Re: Error at start of Spline M...
Last post by austinsamson - February 06, 2023, 02:42:00 PMHey Johannes,
Thanks for the reply, it all ended up working out - the error blip is still there, but it doesn't seem to effect the robot - runs cleanly through it - as for the spline, it appears to be working fine for our purpose - we get a nice consistent velocity with it, which is something we were struggling with while using the linear movements. I think if there are enough points for the spline (we have 5mm between each point) it is accurate enough, at least for clay printing -
Thanks for the reply, it all ended up working out - the error blip is still there, but it doesn't seem to effect the robot - runs cleanly through it - as for the spline, it appears to be working fine for our purpose - we get a nice consistent velocity with it, which is something we were struggling with while using the linear movements. I think if there are enough points for the spline (we have 5mm between each point) it is accurate enough, at least for clay printing -
#15
Support / Re: Set start point programmat...
Last post by Johannes @ Robots in Architecture - February 06, 2023, 08:11:21 AMGood Morning,
Sorry for the late approval of your post, there were some issues with the forum.
What start point are you referring to? The initial axis position in the settings or something else?
Thanks!
Johannes
Sorry for the late approval of your post, there were some issues with the forum.
What start point are you referring to? The initial axis position in the settings or something else?
Thanks!
Johannes
#16
Support / Re: Woven CMD not working
Last post by Johannes @ Robots in Architecture - February 06, 2023, 08:09:02 AMHello,
How many items does each element contain? As per the error message, it expects the same number of elements at each input.
Best,
Johannes
How many items does each element contain? As per the error message, it expects the same number of elements at each input.
Best,
Johannes
#17
Support / Re: Error at start of Spline M...
Last post by Johannes @ Robots in Architecture - February 06, 2023, 08:07:23 AMGood Morning,
In general I would advise against using splines, they are not NURBS and you lose quite a lot of control over your geometry with them, in my experience. Though that might not matter as much with clay printing.
The problem you found is still a bit weird to me so I will continue to look into it, but for now it should be fixed, and the fix will be included in the next member release. As you mentioned that you're a member through your university, if you send me an email I can provide the release in advance.
Best,
JOhannes
In general I would advise against using splines, they are not NURBS and you lose quite a lot of control over your geometry with them, in my experience. Though that might not matter as much with clay printing.
The problem you found is still a bit weird to me so I will continue to look into it, but for now it should be fixed, and the fix will be included in the next member release. As you mentioned that you're a member through your university, if you send me an email I can provide the release in advance.
Best,
JOhannes
#18
Support / Re: Safe Plane Broken?
Last post by Johannes @ Robots in Architecture - February 06, 2023, 07:48:07 AMGood Morning Austin,
Sorry for the late reply, we had some forum issues.
Regarding your question, on my PC the Safe Plane seems to work as it should, could you please send me a screenshot and mark what does not work?
Thanks,
Johannes
Sorry for the late reply, we had some forum issues.
Regarding your question, on my PC the Safe Plane seems to work as it should, could you please send me a screenshot and mark what does not work?
Thanks,
Johannes
#19
General Discussion / Re: A4 rotation
Last post by Johannes @ Robots in Architecture - February 06, 2023, 07:44:12 AMHello,
Please excuse the late reply due to some issues with the forum.
What you are seeing is a singularity - the robot is stretched out and the axes of A4 and A6 are nearly overlapping, which is causing the problems that you are observing. Try to angle your tool to avoid that. For more information on singularities also check the KUKA manual.
Best,
Johannes
Please excuse the late reply due to some issues with the forum.
What you are seeing is a singularity - the robot is stretched out and the axes of A4 and A6 are nearly overlapping, which is causing the problems that you are observing. Try to angle your tool to avoid that. For more information on singularities also check the KUKA manual.
Best,
Johannes
#20
Support / Re: Streaming Joint Positions ...
Last post by Johannes @ Robots in Architecture - February 06, 2023, 07:41:34 AMHello,
Sorry for the late reply, there were issues with the forum, notification. The problem here is not so much the PC side, but the robot side.
For (soft) real-time control we recommend mxAutomation, which is built into the member version of KUKA|prc (but you need to buy the techpackage for the robot). If you want to put something together, you could look into KUKA EKI and KukaVarProxy - note that these two are nice for sending variable etc., but it's more challenging to get smooth motion out of them.
Best,
Johannes
Sorry for the late reply, there were issues with the forum, notification. The problem here is not so much the PC side, but the robot side.
For (soft) real-time control we recommend mxAutomation, which is built into the member version of KUKA|prc (but you need to buy the techpackage for the robot). If you want to put something together, you could look into KUKA EKI and KukaVarProxy - note that these two are nice for sending variable etc., but it's more challenging to get smooth motion out of them.
Best,
Johannes