Crimping die for terminal fitted wire

A crimping die, comprising:

• a first die formed with a concave die surface for constraining a cylindrical wire crimping portion of a terminal fitting;
• and
• a second die formed with a convex die surface paired with the concave die surface;
• wherein:
• a width of a recess on the concave die surface and that of a projection on the convex die surface are equal to an outer diameter of the wire crimping portion;
• and
• the wire crimping portion is sandwiched between the concave die surface and the convex die surface to be compressed and deformed, whereby the wire crimping portion and the wire inserted into the cylindrical interior of the wire crimping portion are crimped and fixed;
• the recess includes a bottom surface with a first inclined surface part inclined in a depth direction of the recess toward an end part in the length direction;
• the upper end surface of the projection includes an upper end surface with a second inclined surface part inclined in a direction opposite to a projecting direction of the projection toward an end part in a length direction that is perpendicular to a width direction of the recess;
• and
• each of the first and second inclined surface parts is shaped such that an angle of inclination discontinuously changes to increase toward the end part.