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Can not find starting point for 3D Printing with a 4 DOF arm

#1
I have a 4 DOF Robot arm and I want to simulate the 3D printing process. From what I understand, this simulation can only be done with a 3 DOF or 5 DOF robot. I reduced my robot to 3 DOF, but now I'm encountering the error: "The robot cannot reach all targets in the path." How can I solve this issue?

Additionally, if I manage to resolve this, I might face another error saying: "Can't find starting point." I have been trying to simulate the printing process for days without success, and the submission date is approaching. I'd greatly appreciate a fast response. Thank you! 

I have attached a screenshot and the project file.


Attached Files Thumbnail(s)
   

.rdk   3DOF Robot- 3D Printer.rdk (Size: 15.23 MB / Downloads: 69)
#2
Is it me or does the z axis in the tcp point to the side?
#3
I actually just noticed that, I don’t know how I never noticed it before. Anyways, now that I rotated the z-axis downwards, the program gives me the error saying "can’t find start point"
#4
Is this related to the issue you posted in the other thread? If so, please try to not duplicate your questions among multiple threads.

Also, make sure to attach your RoboDK project file so we can better help you.
#5
Yes it's the same issue! Yes noted my bad.
Here it is! Thank you!


Attached Files
.rdk   3DOF Robot- 3D Printer.rdk (Size: 15.23 MB / Downloads: 56)
#6
You won't be able to make a 3D print project work with this 3-axis robot. It is like if you blocked axes 4, 5 and 6. It could work with a 5-axis robot but not with your current setup.

It would work with a generic 3-axis machine as well (an H-bot type of mechanism).
#7
I see. I have another question then, can I simulate the robot movement with a trajectory planning; by using the target feature?
#8
You should not have any issues programming your 3-axis robot arm using joint movements.
#9
Sounds good! Is there any tutorials for that?
#10
I recommend you to follow this getting started guide to get familiar with targets, coordinate system and tools:
https://robodk.com/doc/en/Getting-Started.html#Station
  




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