FMEA column column ''therblig motion'' for a given potential failure

Silex7

Involved In Discussions
#1
Hello Everyone!

I am in the process of filling a FMEA model assigned by my company. I stopped by a column says ''therblig motion'' for a given potential failure.

I just wondering what does a therblig motion should represent for a given failure mode?

Thank you in advance
 
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Miner

Forum Moderator
Staff member
Admin
#2
As to what a therblig motion is, see Therblig in Wikipedia.

Is this form unique to your company? I have never seen such a column in any FMEA templates I have encountered.
 

Silex7

Involved In Discussions
#3
Yes, I think it's not stated in the regular FMEA standard model. I have read about it on wikipedia, but it seems describing something specific.
I was jus wondering if anyone have heard something similar.
 

ScottK

Not out of the crisis
Staff member
Super Moderator
#4
Wow. I haven't used that stuff since college in the 80's.
I have no idea why it would be on an FMEA unless the FMEA is broken down unto every little motion to complete a task.... that would be a super cumbersome FMEA, like doing a full FMEA for picking up a pen and signing your name.
Maybe the person that created the FMEA template based it on a Time/Motion study template and just didn't delete that column?
 

Bev D

Heretical Statistician
Staff member
Super Moderator
#5
wow. just wow. do you know who created the form and what they were thinking?
 

reynald

Quite Involved in Discussions
#6
Well if the column's sequence is like
Step# | Step | Therblig Motion | Failure Mode...
then I think there might be a sense to it but only for very specific purposes.
Like when motion accuracy is success critical. It means the operation is very minute and detailed though. Like eye-surgery level of necessary precision.
 

Silex7

Involved In Discussions
#7
.. unless the FMEA is broken down unto every little motion to complete a task.... that would be a super cumbersome FMEA, like doing a full FMEA for picking up a pen and signing your name.
Maybe the person that created the FMEA template based it on a Time/Motion study template and just didn't delete that column?
Yes ScottK , that's exactly what it is, they are making a very lengthy and detailed description on FMEA for every single step in the process.
The column is however required to be filled-in, but I don't think it was left for the creator. this is strange and very exhaustive.:bonk:
 

Silex7

Involved In Discussions
#9
Well if the column's sequence is like
Step# | Step | Therblig Motion | Failure Mode...
then I think there might be a sense to it but only for very specific purposes.
Like when motion accuracy is success critical. It means the operation is very minute and detailed though. Like eye-surgery level of necessary precision.
Yes, this what I came through during this discussion here, I guess they want me to describe every step with its related motion, but I think it's useless and more exhaustive.
 

ScottK

Not out of the crisis
Staff member
Super Moderator
#10
I would definitely push back against the need for such detail. Is this for a customer or for internal use?
 
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