Metal deforming – With cutting – By shearing tool-couple
Patent
1990-06-07
1991-03-12
Phan, Hien H.
Metal deforming
With cutting
By shearing tool-couple
72329, 72330, 72336, 83 40, 83 86, 83103, 83167, 83405, 83695, B21D 2800
Patent
active
049984306
ABSTRACT:
In a progressive die for punch press operations in which a strip of material is fed into the press and sequential operations are conducted on the strip including the separation of parts from the strip. The die is provided with a construction which forms an integral carrier tab between the parts to be separated. In the embodiment ilustrated, the operation is the manufacture of rotor and stator laminations for a dynamoelectric machine. The strip of material is fed into the press in which the die is mounted, and the respective rotor and stator laminations are formed in a series of workstations within the die. The improvement in the die construction is a punch station for substantially but not completely separating the rotor lamination from the strip. Thereafter, additional operations are constructed on the strip, the rotor lamination being completely separated at a subsequent workstation. The integral carrier tab for the rotor lamination prevents the forming of burrs of material around the perimeter of the rotor or that portion of the strip from which the lamination is separated.
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Emerson Electric Co.
Jones Eugenia A.
Phan Hien H.
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