Torque analisys screwing tool

[paul.espinosa.peralta]

Hello, dear community. 

I am trying to perform a static simulation to know the torques involved in a screwing tool. 

I made two simplified pieces:

The first one: is the base plate 

the second one: is the servomotor and the socket

And the assembly :

I need to get the torques and forces at a specific point when the servomotor applies some torque.

For example, I applied 40 Nm from the servomotor, then when some bolt is screwed the servomotor stop and the forces and torques are translated to the main holder point.  

To simulate this, I set fixed constraints at the socket, and in the main holder point (holes in the robot flange), in addition, I added a moment load of 40 Nm in the servomotor base,  as in the following image :

When simulating I get the forces/torques  values at "fixed constrain at robot flange"

However, I am not sure if the forces and torques are correct. 

Could you help me? What is the correct way to set the constraints and get accuracy forces and torques? 

I attached the simulation files made on Inventor 2022

Thanks for your help 

[tobias]

What helps a lot is to increase (or decrease) the load dramatically. This wil give you a better indication of how your model is behaving. Also look at the deformation and see if it is deflecting as it should be. Animate is very helpfull and increase the visibility of the deformation.

Also put the Torque on the part which actually is working on the plate, unless you want to calculate the servo motor also.

If the parts turn totally blue you probably have a stress concentration somewhere.

Look for it on the internet what it means. This is maybe helpfull:

https://www.eng-tips.com/viewthread.cfm?qid=457734