Page 48 - Module DMV20173
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3.0 SHEET METAL PROCESSES
4. Die materials for press brakes may range from hardwood (for low-strength
materials and small-production runs) to carbides for strong and abrasive
sheet materials and also are chosen to improve die life.
Figure 3.19 (a) through (e) shows the schematic illustrations of various bending
operations in a press brake, and (f) shows the schematic illustration of a press brake.
a. Beading
1. In beading, the periphery of the sheet metal is bent into the cavity of a die.
2. The bead imparts stiffness to the part by increasing the moment of inertia
of that section.
3. Also, beads improve the appearance of the part and eliminate exposed
sharp edges that can be hazardous.
4. Fig 3.20 (a) shows bead forming with a single die (b) though (d) bead
forming with two dies in a press brake.
BPLK 80 DMV 20173
