Fineblanking is a
stamping process that produces a part that more closely resembles a machined
part in appearance and dimensional tolerance. Utilizing a triple action
press and compound die construction, in either a single station or progressive
die design, stampings which typically would require at least secondary
machining operations are blanked with smooth edges (no die break) and accurate
net shapes. The ability to confine the material allows for stamping of
parts with small holes (relative to material thickness), minimal edge distances
and difficult shapes with smaller radii than conventional stamping. The
robust nature of the process also allows for coining of material thickness,
joggles, upset features such as buttons and will still maintain superior
flatness. A wide variety of ferrous and non-ferrous materials can be
fineblanked. In general the more ductile the material is, the more
applicable to the process it will be, allowing for more intricate shapes and
greater thickness to be blanked.
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