Recent Posts

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Support / Re: cutting with disk cutter tool
« Last post by Johannes @ Robots in Architecture on May 21, 2017, 03:48:19 PM »
Hello,

Well, you've can get the tooltip and tangent vector from your curve and the normal vector from the surface. So you basically only need that information to build up your frame. You could just use the Construct Plane component, deconstruct the plane, and then reassemble it as needed (e.g. origin and X vector stay the same, new Y-vector is the previous Z-vector).

Best,
Johannes
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Support / cutting with disk cutter tool
« Last post by nimon on May 20, 2017, 06:48:48 AM »
Hi,
I'm trying to cut a some sluts on a hemisphere surface using projected curves and Evaluating Surface to generate frames normal to the surface. The problem is since the cutting disk should be always parallel to the X axis in order to cut a straight line that I cant achieve using above method. Is the any trick to limit tool's rotation in one of orientation axis (lets say A or C)?
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Tutorials / Video Tutorial - Hot-Wire Cutter
« Last post by singline on May 08, 2017, 06:59:24 PM »
My latest video tutorial is now live!

Video Tutorial here: https://youtu.be/2ZTyospKniQ
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General Discussion / Re: Outputs with Beckoff 2809 and 2404
« Last post by DReAM-FabLab on May 05, 2017, 08:02:48 PM »
Johannes, thank you for the prompt reply, it helped a lot in the development, i supposed the supply was given through a bus laying on the background.
I've tried the 9100 too but ofc it couldn't work that way.
everything works now,
new tools are coming!
stay tuned!
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Support / Re: Panels for geodesic structure - 3pts to plane?
« Last post by Woodboss on May 05, 2017, 06:52:08 PM »
Thanks again Johannes,
That's got me started...
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...and you could also use your https://www.beckhoff.com/english.asp?ethercat/el9100.htm to supply the voltage, but it seems to be only connected to the + Infeed, no - Infeed.
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Fortunately that one is easy to solve, you need to bridge plus/plus and minus/minus on the coupler.
I've attached a random photo (disregard anything else in there) where it shows that the upper + is connected to the lower +, which in turn is then connected to the power supply. Same for negative.
Just take special care not to short something!

Best,
Johannes
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General Discussion / Outputs with Beckoff 2809 and 2404
« Last post by DReAM-FabLab on May 05, 2017, 12:13:15 PM »
Hello everyone,
I'd like to share some troubles I'm facing dealing with IO, basically I can't get any tension on the desired ports

on the Workvisual side everything should be fine, I configured the PLC connections I need (Beckoff 2809 and 2024 ) and I can get the status LEDs of those PLC in the KRC4 cabinet on when I change the output values on the smartpad.

the problem is that I can't measure any voltage coming from them... seems like an electric grounding problem, where do you usually connect the negative ground?

on the 2809 I take the ground from the '-' connector of the main PLC as in the picture.
https://www.beckhoff.com/english.asp?ethercat/el2809.htm


on the 2024 I can have the controlled positive signal and the corrisponding ground (https://www.beckhoff.com/english.asp?ethercat/el2024.htm)


I hope i'm missing something, cos I can't get any explanation :S
thank you all in advance!
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Hello,

That's how I would solve it. Just take the control points of each of the polygons and use the "connection" between the edges as the tool axis vector.
Note that I've positioned it flat on the ground and I've switched it around so that the larger polygon is up. Otherwise the wrist of the robot could touch the material.

Best,
Johannes
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Support / Panels for geodesic structure - 3pts to plane?
« Last post by Woodboss on May 03, 2017, 09:56:55 AM »
I'm working on my second script which is for cutting out panels for geodesic structures.

I need the tool (currently just the flange) orientation to change when cutting out the panels to provide beveled edges at the correct angle.

If I extend the corner lines to a 'focus' then orienting the tool tip toward that should work, but how to do it? Or should I be using one polygon as guide curve, and the other as a cut curve?

An approach using the toolpath utilities 'Orient plane' or '3pts to plane' would seem to provide a way ahead but I have so far failed to figure out how to use them...

Thanks in advance for any help.
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