Method of manufacturing press mold for mass-producing hot stamping cold trim and press mold for mass-producing hot stamping cold trim manufactured using the same

摘要

A method of manufacturing a press mold for mass-producing a hot stamping cold trim includes bonding first and second steel bodies made of different materials to form a single body mold material, polishing a bottom surface and one edge surface of the mold material with processing margins, processing edge surfaces other than the one edge surface on which a bonding part is positioned, processing reference holes for guide pins and a reference surface, forming bolt holes penetrating through the reference surface and the bottom surface, processing a surface of the first steel body in a predetermined shape, heat-treating the mold material, and polishing the bottom surface and the one edge surface having the processing margins at desired accurate dimensions and wire-processing the one edge surface with the processing margin to configure a front end part having the desired accurate dimension.

主权项

1. A method of manufacturing a press mold for mass-producing a hot stamping cold trim, comprising: a first step of bonding a first steel body to a second steel body, which are made of different materials, the first steel body of a superhard steel and the second steel body being of a tool steel having a hardness less than that of the first steel body, to form a single body mold material; a second step of polishing a bottom surface and one edge surface of the mold material such that they include first and second processing margins; a third step of machining edge surfaces of the mold material other than the one edge surface that is among four edge surfaces on which a bonding part of the mold material is positioned; a fourth step of forming reference holes for guide pins of the mold material and a reference surface; a fifth step of forming a plurality of bolt holes penetrating through the reference surface and the bottom surface of the mold material; a sixth step of machining the reference surface of the first steel body made of a superhard material into a multi-stage shape based on two reference holes to produce the surface in a predetermined shape; a seventh step of heat-treating the mold material; and an eighth step of polishing the bottom surface and the one edge surface having the processing margins at a desired accurate dimension or desired accurate dimensions and wire-processing the one edge surface with the processing margin to configure a front end part having a desired accurate dimension, by applying a correction value based on a numerical value table of measurement values depending on a processing condition.