"STRENGTHENING RIBS ARE suitable for adding strength to sheet metal parts. Using our Rollerball~(TM) tooling, punch press operators can quickly and easily create stiffening ribs and decorative beads in sheet metal without secondary operations. Our Rollerball tool forms the rib by pinching the metal between two omni-directional ball bearings in the upper tool assembly and a single ball bearing in the tool's lower assembly. The shape of the rib is created by the punch press programming system and can be placed anywhere on the part surface," Mate Precision Tooling told ISMR.
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