See post in IVCF with the same header for example files.
Basically, the problem is constraining picks to a rotating drum. It is easy constraining to the cylindrical face, but at the
rounded end, you need to constrain tangent to the toroidal face whilst making the pick orientation normal to the face and
maintaining the 45degree attack angle on the pick.
The pick assembly has a work axis defining the 45degree attack angle, which needs to be normal to the filleted edge of the drum,
and the curved face on the base of the pick needs to be in point contact with the filleted edge of the drum. The contact position
is 200mm from the back edge of the drum.
I've thought of two ways of doing this, but they are both a right royal PITA and my brain is hurting!
John Bilton