Adjustable punch head assembly

A punch head assembly, comprising:

• a punch head including a main body having opposite first and second ends, and a longitudinal inner bore extending between said first and second ends, said main body having at least one first passageway extending substantially radially from said inner bore, and at least one second passageway substantially traversing a respective one of said at least one first passageway and extending in a direction that is substantially transverse to a longitudinal axis of said longitudinal inner bore;
• a ball bearing received in one of said at least one first passageway;
• a pin member received in the respective one of said at least one second passageway, said pin member having a working channel configured to engage said ball bearing, said pin member being rotationally movable between first and second positions with respect to a longitudinal axis of the respective second passageway;
• and
• a driver coupled to said punch head, said driver including a stem extending through said second end of said punch head and into said inner bore, at least a portion of said stem having an outer ball engagement surface, said punch head being axially movable with respect to said stem of said driver,
• wherein axial movement of said pin member in the respective second passageway moves said ball bearing into and out of engagement with said outer ball engagement surface of said driver for adjusting an axial position of said punch head with respect to said driver, and
• wherein said working channel includes a ball securing portion that receives said ball bearing for securing said ball bearing into engagement with said outer ball engagement surface of said driver and locking the axial position of said punch head, and said working channel includes a ball receiving portion that receives said ball bearing for allowing said ball bearing to move out of engagement with said ball engagement surface of said driver and for guiding said ball bearing into said ball securing portion.