Method of removing excess metal from casting with press, and...

Details Method of removing excess metal from casting with press, and... Method of removing excess metal from casting with press, and...

2011-07-12

2011-07-12

Kerns, Kevin P (Department: 1735)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S262000

Reexamination Certificate

active

07975749

ABSTRACT:
A set of dies are composed in order to remove excess metal from a casting with a press. A method of removing the excess metal from the casting includes the steps of attaching a cutter to one of the stationary die side or the movable die side; setting a work on the other side; and punching excess metal of the work into a recess shape by one punching motion of the movable die with a plurality of blades from the first blade, which is smaller, to the final blade, which is larger and protruded, when the excess metal of the work is removed by a punching motion of the movable die conducted on the stationary die. A cutter includes a row of blades in which a plurality of blades are arranged step-wise having a change in the form from the first blade, which is smaller than the final shape of the excess metal to be punched, to the final blade, the shape of which is the same as the final shape. The row of blades from the first blade to the final blade are arranged so that the first small blade can be used ahead of other blades and the other blades can be used in the order of punching motions.

REFERENCES:
patent: 2574953 (1951-11-01), Bess et al.
patent: 4175497 (1979-11-01), Lund
patent: 7810548 (2010-10-01), Nishina
patent: 09-019724 (1997-01-01), None
patent: 9-19724 (1997-01-01), None
patent: 11-197820 (1999-07-01), None
patent: 11-197820 (1999-07-01), None
patent: 2004-17127 (2004-01-01), None

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