Automobile panel die design method

A technology for automotive panel and mold design, which is applied in computing, instrumentation, electrical and digital data processing, etc., and can solve problems such as increasing the difficulty of mold debugging, complex structure, and difficulty in deformation under load.

Active Publication Date: 2011-04-20
成都普什汽车模具有限公司 +2
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  • Abstract
  • Description
  • Claims
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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.

Method used

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Embodiment Construction

[0019] For the drawing die of automobile panels, its main components are upper die, lower die and blank holder. In order to reduce the weight of the mold, these three parts are usually cast and adopt a hollow shell structure. Therefore, the mold structure will undergo elastic deformation under load, which will affect the fitting accuracy of the cavity surface between the upper and lower molds, and ultimately affect the quality of the car. Forming accuracy of the cover.

[0020] The present invention just considers that automobile panel mold has such deformation in advance, and it is brought into automobile panel mold design process, as figure 1 As shown, the design steps are:

[0021] (1) Establish the corresponding CAD model of the three-dimensional geometric theory mold according to the geometric structure characteristics of the automobile panel; determine the movement and contact relationship between the various parts of the model;

[0022] (2) Remove the structural featu...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 闫庆禹周杰费伟杨明赵维川李慧陆演陈科倪志鸿段彦宾田飞刘启奎谭毅
Owner 成都普什汽车模具有限公司
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