Lower tool with friction reduction device

A lower die for a bending machine, comprising:

• a longitudinally extended base body extending along a longitudinal direction and comprising:
• a tool shank created as a one-piece unit with the base body and disposed on a bottom side of the base body for being received in a guide slot of a tool holder;
• tool shoulders formed by the bottom side of the base body and extending in a transverse direction to the longitudinal direction, wherein the tool shank is located between the tool shoulders and the tool shoulders are built to transfer vertically directed bending forces onto the tool holder, which vertically directed bending forces are generatable by the bending machine and are acting onto an upper side of the lower die;
• and,
• a groove disposed on an upper side of the base body and having a V-shaped cross section, the groove extending in the longitudinal direction;
• and
• at least one friction reduction device on the bottom side of the base body for reducing a frictional force between the bottom side of the base body and the tool holder in the event of a displacement of the lower die relative to the tool holder in the longitudinal direction and when no vertically directed bending forces are acting onto the upper side of the lower die,
• wherein the at least one friction reduction device is configured such that a weight force of the lower die acting on the tool holder, while a reactionary force is applied onto the lower die, causes the weight force of the lower die to be transferred completely from the friction reduction device to the tool holder, and
• wherein the at least one friction reduction device is arranged in a receiving space in the tool shoulders of the lower die such that the friction reduction device is configured so as to be movable with respect to the bottom side at least in the direction of the weight force.