Patent ID: 6523390
Filing Date: 2003-02-25
Classification: B21D

Abstract:
A holder for mounting to a press brake a press brake tool having a mounting shank, the holder comprising a body having a support plate, a clamp having upper and lower portions and pivotally attached between said upper and lower portions to the body to enable the mounting shank of the tool to be clamped between said lower portion of the clamp and said support plate, the body having formed therein a cylindrical bore and having a fluid entry port for delivering pressurized fluid to a location within said bore, an elongated shaft slidable axially within said bore in response to the delivery of fluid under pressure into the bore and having a camming surface along its length, said camming surface including a first, larger outer diameter region having an outer diameter greater than a second, smaller outer diameter region, said body including a cam follower engagable with said camming surface and movable in response to axial movement of the shaft to force the clamp to pivot with respect to the body, thereby forcing the lower portion of the clamp toward or away from said support plate to clamp or unclamp the mounting shank of the tool.