Manufacturing method of high-strength parts thermoforming stamping die

Abstract

The invention discloses a high-strength part thermal formation punching mold manufacturing method. The manufacturing method comprises the following steps: the conventional mold structural design is performed as needed, and meanwhile, the thermal coupling calculation is performed according to a geometric shape of a part at high temperature; a mold formation block is machined at constant high temperature, and thermal coupling calculation data is used as machining reference; a mold is inspected and debugged, the differences between the molded surface of the mold and a design drawing at high temperature are compared, and the thermal coupling calculation data is used as detecting reference; and the debugged mold is formally produced, and the thermal coupling calculation data is used as production reference. The manufacturing method guarantees the mold manufacturing precision and the geometric shape accuracy, simplifies the mold design requirements, reduces the debugging times, and shortens the mold development period.

Description

technical field [0001] The invention belongs to the technical field of high-strength boron steel stamping, and in particular relates to a method for manufacturing a high-strength part thermoforming stamping die. Background technique [0002] Traditional thermoforming stamping parts with softening energy-absorbing zone mold development process, according to the geometry of normal temperature auto parts, relying on thermal coupling simulation analysis software to calculate the geometry of the parts at a specific temperature, and then calculate the mold forming block at room temperature The geometric shape, using this geometric shape for conventional normal temperature machining, after the mold processing is completed, the mold is heated and debugged, there are many variable factors in the whole process, such as the thermal coupling simulation analysis model is inconsistent with the reality, considering the actual environment Temperature, humidity, wind force, etc.; the heat tr...

AI Technical Summary

Problems solved by technology

[0002] Traditional thermoforming stamping parts with softening energy-absorbing zone mold development process, according to the geometry of normal temperature auto parts, relying on thermal coupling simulation analysis software to calculate the geometry of the parts at a specific temperature, and then calculate the mold forming block at room temperature The geometric shape, using this geometric shape for conventional normal temperature machining, after the mold processing is completed, the mold is heated and debugged, there are many variable factors in the whole process, such as the thermal coupling simulation analysis model is inconsistent with the reality, considering the actual environment Temperature, humidity, wind force, etc.; the heat transfer efficiency of the simulation analysis is different from the actual one; the material of the mold forming block itself is not uniform, which leads to the inconsistency between the expansion system of the mold forming block and the mathematical model of the thermal coupling simulation analysis; the heating in the mold forming block Uneven source distribution leads to inconsistent local expansion; the above calculation results are approximate values, and relying on this method to make molds will eventually lead to poor precision, requiring a lot of debugging, and product quality cannot be improved

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