| 摘要 |
<p>An inside perimeter hemming machine (10) is disclosed having a base (12) adapted to be supported by a ground surface (14). A nest (16) adapted to support the part (22) to be hemmed is vertically movably mounted relative to the base (12) between predetermined vertical positions while at least one actuator (20) vertically moves the nest (16) relative to the base (12). A die assembly (26) housing is mounted to the base (12), and this die assembly housing (26) extends through the opening (28) on the part (22) to be hemmed. At least two die sets are horizontally slidably mounted to the housing (26) so that the die sets are movable between an extended and a retracted position. In their extended position, the die sets overlay the part (22) to be hemmed so that, upon vertical displacement of the nest (16), a prehem or hem is performed. Conversely, when the die sets are in their retracted position, the nest (16) together with the part (22) to be hemmed is freely vertically movable. A wedge drive member (40) is utilized to simultaneously move the die sets between their extended and retracted positions. <IMAGE></p> |
