swertel
Mechanical
- Dec 21, 2000
- 2,067
I have a standard rivet (NAS-1198-3-6) with a .045 inch diameter drilled .055 inches deep in the end (leaving a wall thickness of .0245 inches).
I plan on using a formed punch on a pneumatic cylinder to "roll" the wall material outward to form what is essentially a domed end, thus staking the rivet.
Can anyone refer me to a resource that will aid me in determining the force (size of cylinder) required to form the end of the rivet? I have looked through Roark's and several cases seem to apply, but are innaccurate due to aspect ratios and other assumptions that do not apply to this scenario. A reference for metal working/metal forming seems to be the direction I need to go, since this will be a plastic deformation.
TIA,
--Scott
I plan on using a formed punch on a pneumatic cylinder to "roll" the wall material outward to form what is essentially a domed end, thus staking the rivet.
Can anyone refer me to a resource that will aid me in determining the force (size of cylinder) required to form the end of the rivet? I have looked through Roark's and several cases seem to apply, but are innaccurate due to aspect ratios and other assumptions that do not apply to this scenario. A reference for metal working/metal forming seems to be the direction I need to go, since this will be a plastic deformation.
TIA,
--Scott