| 主权项 |
1. A biasing assembly for a punching device, comprising:
a punch support member adapted to support a punch and including a head portion and a main portion extending from said head portion, said main portion having a recessed surface extending substantially around said main portion; a retaining member coupled to said punch support member with said punch support member being slidable with respect to said retaining member, said retaining member is a collar surrounding said main portion of said punch support member, said collar having a main retaining portion and at least one extension, wherein said main retaining portion has a radial width that is wider than said at least one extension, such that said main retaining portion has an engaging surface disposed radially outwardly of said at least one extension; a coupling member disposed between said main portion of said punch support member and said retaining member, said coupling member substantially surrounding said recessed surface, wherein said coupling member is fixed with respect to said retaining member, said coupling member being a substantially ring-shaped clip; and a biasing member supported between said head portion of said punch support member and said retaining member, said biasing member engaging said engaging surface of said main retaining portion, whereby said punch support member is movable between at least first and second positions with respect to said coupling member, such that in said first position, said coupling member engages a first area of said recessed surface of said punch support member, and in said second position, said coupling member engages a second area of said recessed surface, different from said first area. |
