[机] 花砧, 型铁砧

[ noun ]
an iron block cut with holes and grooves to assist in cold working metal
<noun.artifact>

Swage \Swage\, n.
A tool, variously shaped or grooved on the end or face, used
by blacksmiths and other workers in metals, for shaping their
work, whether sheet metal or forging, by holding the swage
upon the work, or the work upon the swage, and striking with
a sledge.

{Swage block}, a perforated block of iron, having grooved
sides and adapted for use in heading bolts and swaging
objects of large size.