Ball Bearing Lock Mechanism

[Mattm86]

Hi,

My first post here so I'm not sure if this is the correct Forum, please feel free to move if its not in the right area.

I'm looking to design a ball bearing lock mechanism similar to that found in quick-lock connectors or airline PCL connections
(

http://www.google.co.uk/imgres?imgu...0CF4QMyg0MDRqFQoTCO3aitHr8cgCFQtyFAodJvsA2w).

This will be to secure a ~1" diameter Rod in a oilfield tool I am working on.

My issue is that I will need to calculate for bearing/shear etc and there will essentially be line or point contact.
Are there any existing design guidelines for this sort of thing?

regards

Matt

 

[Tmoose]

Is the rod to spin in the tool, be spun by the tool (like a drill), or vibrate axially ( needle scaler, air hammer/chisel) ?

 

[Mattm86]

Well The rod will be spun (its essentially a drill shaft), however when locked it wont be spun. The lock mechanism is to temporarily prevent the rod from being pumped out of the body of the tool due to a piston effect from pressure across its X-sec area. I was going to use either a collet or keys but thought that a ball bearing lock mechanism may be more compact and allow for a smaller profile on the rod itself on which to lock against.