Metal tools and implements – making – Blank or process – Die
Patent
1993-11-05
1996-10-22
Peterson, Kenneth E.
Metal tools and implements, making
Blank or process
Die
8369871, B21K 520
Patent
active
055665942
ABSTRACT:
A re-rulable steel rule die frame is made from metal. Slots are cut in the metal die frame for receiving the blades of the steel rule. In one embodiment, the frame is a block of metal and the slots are cut such that the slots do not go completely through the frame. The blades are placed in the slots to form the desired cutting configuration. The edges of the blades opposite the cutting edges rest on the metal bottoms of the slots. The corners or ends of the blades are joined by welding, brazing or soldering without danger of burning the metal frame. In another embodiment, computer-directed laser beams cut precise slots in multiple layers of metal. The multiple layers are then joined together so the slots align, providing a precisely cut metal-framed steel rule die of a thickness able to withstand repeated stress. A modification of this embodiment allows the cut material to fall through the die. The desired shape is precisely cut in each frame layer, forming openings through each layer. The layers are joined together so the openings align. The steel rule blades are brazed to the metal frame layers around the perimeter of the formed opening. When the material is cut it falls through the frame. As an alternative to the openings, compressed air ejection system is used to remove the cut work piece from the die frame.
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