calculation surface contact gripper

[GIOVANNI682]

Good morning to all,

I have a problem that develops like this:

a gripper gripper that holds me a copper pipe with a grip force of 1000 n, the tube can have different shapes in the sense that it has undergone a bending deformation (let us assume a shape to l for example). My problem is to calculate the minimum contact surface between pipe and clamp to lock the rotation and prevent the sleaching of the tube, (considering that because of the deformation and not being the axis tube this last tends to rotate and taking into account that the rinse of the sigmasn material = 40 mpa. )
I attach a representative scheme.

I considered the mass of the tube as a concentrated mass (fault case)
the quotas are not accurate but they only serve to give me an indication on how to carry out this exercise.

ps: the pliers are shaped in the sense that they have the same shape of the tube

thanks in advance

 

[meccanicamg]

the ability to hold the pipe in clamp depends on the friction coefficient and the force of the clamp....stop.

if you do not have to defirnarebil tube instead you have to calculate the specific pressure of contact and establish an admissible deformation or voltage. depending on this you have the limit that will provide you with how many mm the pipe will be padded.

 

[GIOVANNI682]

thank you for the answer, but they are all considered that I did but do not know how to proceed, can you give me an example or a guideline from where I can leave? Thanks again

 

[meccanicamg]

there are the formulas of science of the buildings to use. There's to put our heads on and make a excel with all the variables.
If you don't have a good school book, I recommend niemann in three volumes.

 

[TETRASTORE]

Can you give me an example or a guideline from where I can go?

I think the document: gripping organs for industrial manipulators (p. 9 and later) even if it treats grippers for robotic arms of smaller size than your can be of help.

 

[GIOVANNI682]

Thank you very much