Shearing die and press-forming method
AssigneeJfe Steel Corporation
InventorsHiroto Miyake, Toyohisa Shinmiya, Yuji Yamasaki
Life of this patent
Estimating the term…
Abstract
A shearing die for preventing damage of a die tool in shearing of a super-high-tension steel sheet and a press-forming method using the same. The shearing die for shearing a metal sheet in a direction intersecting a first-sheared edge of the metal sheet in press-working including a plurality of shearing processes to produce a formed article from the metal sheet by press-forming, in which the shearing die comprises a fitting part that can detach a shearing blade in the vicinity of a region coming in contact with an end of the first-sheared edge.
Claims11
A shearing die for shearing a metal sheet in a direction intersecting a first-sheared edge of the metal sheet in a press-working including a plurality of shearing processes to produce a formed article from the metal sheet by a press-forming, characterized in that
- the shearing die comprises a shearing blade and a fitting part configured to detach from the shearing blade, the fitting part being provided in a vicinity of a region of the shearing blade arranged to come in contact with an end of the first-sheared edge, the metal sheet being work-hardened to 500 Hv or more by shearing, wherein
- the fitting part is an insert structure configured to be inserted into a cutout of the shearing blade.
Dependencies are inferred from the claim text.