Joints to simulate EDM Orbiting

[Oh_Bob_Saget_86]

Hello all, first time poster.

I want to simulate the motion made when an EDM machine "Orbits" an electrode. But i cant seem to figure out how to get the "electrode assembly" to follow a circular path without it spinning the electrode assembly itself.

See my video for what im talking about. Although the distance it moves is drastically overexaggerated for demonstrations purpose, it shows the exact movement i need to happen on the XY plane looking down in Z. I need the center of the green block to follow a simple circular path (at X amount of distance from its center point) without the entire thing spinning also.

[jhackney1972]

Video helps, but the Forum users need your model to try to give you a solution.  Please attach it. 

If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

[jhackney1972]

Still need your model.

[Oh_Bob_Saget_86]

Hello John,

I cannot share these models due to proprietary information. And if i was to seperate a component from the assembly for upload use, it wont help anyone because there is nothing about it that helps indicate what needs to be done.

The solution im looking for could be determined by simply using a square block. The component just has to follow the circumference of a circle on the XY plane (Size of the circle also does not matter), without the component itself spinning around the Z-Axis.

Its the same as circular interpolation on a milling machine to create a hole larger than the tool itself. Now, imagine the CNC machine performing the circular interpolation moves in the XY Axis BUT the spindle (and tool) are not rotating. (so, my "tool" would be the green block and everything else attached to it)

[etfrench · Accepted solution]

Try this: Use a dummy cylinder that rotates around the center of the EDM orbit.  Add a revolute joint between the dummy cylinder and the EDM. Use a motion link between the two joints with one turning clockwise and the other anticlockwise.

[Oh_Bob_Saget_86]

Interest! I'll give that a try!

[Oh_Bob_Saget_86]

Thanks my man, worked like a charm! Had to add an additional detail but exactly what i wanted! Now its time to update my library with the new configurations utilizing this so i can add simulation to all my electrodes used in designs! This is going to make my electrode repository amazing!