Metal sheet shearing work method, pressed component manufacturing method, metal sheet, and shearing die for metal sheet

A metal sheet shearing work method for shearing work a metal sheet, the method comprising:

• applying double shearing work to an end portion of at least one part of a metal sheet;
• forming, in first cutting in the double shearing work, a first area having a cutting margin of second shearing work of 5 mm or less and a projection area continuous to the first area and having the cutting margin of the second shearing work larger than the cutting margin of the second shearing work of the first area due to a fact that the projection area projects with respect to the first area, and
• carrying out second cutting in the double shearing work in a state where movement on an end portion side of the first area is restrained by restraining the projection area.

A metal sheet, the metal sheet being press-formed after an end portion of at least one part is cut by shearing work, the metal sheet comprising, as the end portion to be cut,:

• a first area having a cutting margin of the shearing work of 5 mm or less;
• and
• a projection area continuous to the first area and having the cutting margin of the shearing work larger than the cutting margin of the shearing work of the first area due to a fact that the projection area projects with respect to the first area.

A shearing die for metal sheet, the shearing die cutting an end portion of a metal sheet with an upper blade in a state where the metal sheet is restrained with a lower blade and a sheet holder, the shearing die comprising:

• a restraining tool configured to restrain movement on an end surface side of the end portion to be cut.