Automobile panel die design method

Abstract

The invention discloses an automobile panel die design method, which comprises the following steps of: (1) establishing a corresponding theoretical model according to the geometrical structural characteristics of an automobile panel; (2) removing the structural characteristics unrelated to the deformation of a die cavity surface from the theoretical model; (3) establishing a finite element model according to the theoretical model simplified by the step (2), and simulating an automobile panel die molding process; (4) calculating the deformation of the die cavity surface after the simulation byusing a computer; (5) performing compensation design and amendment on the theoretical model obtained by the step (1) based on the deformation of the die cavity surface, thereby obtaining a model of an actual die to be machined; and (6) manufacturing the actual die according to the model obtained by the step (5). In the method, corresponding deformation compensation can be performed on the die cavity surface in a design stage so as to offset the influence of the deformation of the actual die, increase the joint degree of the die cavity surface, make the die can be designed and machined in place once, further shorten a die debugging period and reduce the manufacturing cost of the die.

Description

technical field [0001] The invention relates to an automobile mold design method, in particular to a numerical simulation-based automobile panel mold design method, and belongs to the field of automobile panel mold design and manufacture. [0002] Background technique [0003] The production and manufacture of automobile panels is an important link in automobile manufacturing. As an important equipment for car body production, automotive panel molds play a decisive role in the final quality of the car body. Since automobile panels generally have a space surface structure, the shape is relatively complex and the size is large, the automobile panel mold is more complex and larger than the general stamping mold, and the main structure and materials are also different. Based on the above characteristics, the main body of the automobile panel mold is generally cast, and in order to reduce the weight of the mold, the mold adopts a hollow shell structure. Therefore, when the mol...

AI Technical Summary

Problems solved by technology

This process will consume a lot of manpower and time, and the result is related to the fitter's personal experience

[0005] Automobile panel molds will produce overall deformation during debugging and loading work, which will increase the difficulty of mold debugging and affect the forming quality of parts

At the same time, due to the large size and complex structure of the automobile panel mold, it is difficult to obtain the deformation under load by conventional methods.

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