US Patent 9815105 Punch holder and punch configurations

Punch holders and corresponding punch configurations configured to increase the ease and speed by which maintenance and/or modification of punches used with the holders can be performed. In some cases, the punch holder can be configured with one or more upper and lower collars operatively situated on differing areas of the holder, with each collar adapted to perform a different action with regard to a punch held by the holder. In some cases, when the upper collar is rotated, a corresponding height adjustment of a punch held by the holder results. In some cases, when the lower collar is rotated, a punch held by the holder is released.