MAKING CORRUGATED ELASTIC SHIMS
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Abstract
IN BENDING CORRUGATED STRIP TO MAKE A CORRUGATED ELASTIC SHIM, A CONTINUOUS STRIP IS FED FORWARD IN A SPACE BETWEEN A CIRCULAR MANDREL AND A FIRST BENDING AND CUTTING DIE COOPERATING WITH A MANDREL, AND THE FIRST DIE IS MOVED FORWARD TO CUT OFF A PIECE OF STRIP IN COOPERATION WITH AN ANVIL AND BEND IT INTO THE SHAPE OF A U WITH THE ENDS PROTRUDING AWAY FROM THE FIRST BENDING DIE, WITHOUT CRUSHING THE CORRUGATIONS, AND THE SECOND BENDING DIE COOPERATING WITH THE MANDREL ON THE SIDE REMOTE FROM THE FIRST BENDING DIE IS MOVED FORWARD TO BEND THE PIECE OF STRIP INTO A CURVED, CIRCULAR OR MULTISIDED SHAPE WITHOUT CRUSHING THE CORRUGATIONS. IN THE PREFERRED EMBODIMENTS THE BONDING DIES AND THE MANDREL GRIP THE CORRUGATED STRIP AT THE EDGES.
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