Composite material front floor single bottom plate of passenger vehicle and preparation method

A composite material and front floor technology, which is applied to vehicle components, superstructure sub-assemblies, transportation and packaging, etc., can solve the problems of reduced product size accuracy, poor appearance integrity, and large number of inspection tools, so as to reduce assembly and manufacturing costs , low linear expansion rate, and the effect of reducing the weight of the bottom plate

Inactive Publication Date: 2020-07-31
AVIC COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because each split body needs to be stamped and formed by a metal mold, and then the split body needs to be welded into an integral base plate assembly. The number of stamping dies, assembly tooling and inspection tools used in it is large, the appearance integrity is poor, and the manufacturing cost is high; in addition, the assembly tolerance Repeated accumulation will cause the product size accuracy to decrease

Method used

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  • Composite material front floor single bottom plate of passenger vehicle and preparation method
  • Composite material front floor single bottom plate of passenger vehicle and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A passenger car composite material front floor single base plate, the single base plate 1 is a variable thickness base plate of composite material, wherein figure 1 is a schematic diagram of the overall structure of the single bottom plate 1, figure 2 It is a schematic diagram of the variable thickness structure of the single bottom plate 1 ( figure 1 Section A-A), the passenger car composite front floor is formed by a monolithic floor 1, which will be described in detail below.

[0022] The single bottom plate 1 integrates the left sill inner plate 2, the right sill inner plate 3, the left bottom plate 4, the right bottom plate 5, the central channel 6 and the central control box installation plate 7 into a single integral bottom plate, which improves the dimensional accuracy and Appearance integrity, reducing the number of molds, tooling and inspection tools, thereby reducing assembly and manufacturing costs.

[0023] In this embodiment, the left side sill inner pa...

Embodiment 2

[0025] This embodiment also provides a method for preparing a composite material front floor monolithic bottom plate of a passenger car, and the monolithic bottom plate 1 is manufactured by a composite material molding process.

[0026] In this embodiment, the composite material is a carbon fiber epoxy resin prepreg (ACTECH1201 / SYT45, manufactured by AVIC Composite Materials Co., Ltd.), and the carbon fiber epoxy resin prepreg has the advantages of easy integration, large-scale manufacturing, and low curing shrinkage. With the characteristics of low linear expansion rate, through the variable thickness structure design, it is solidified and formed on a single molding mold at one time, which saves the welding process, improves the manufacturing efficiency, and greatly reduces the weight of the bottom plate.

[0027] Among them, the carbon fiber epoxy resin prepreg is made by the following method: after adding 6% of the curing agent and 6% of the accelerator to the liquid epoxy r...

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Abstract

The invention discloses a composite material front floor single bottom plate of a passenger vehicle. The single bottom plate is a composite variable-thickness bottom plate, a left threshold inner plate and a right threshold inner plate are arranged on the left side and the right side of the single bottom plate, the left bottom plate is located on the right side of the left threshold inner plate, the right bottom plate is located on the left side of the right threshold inner plate, a central channel is formed between the left bottom plate and the right bottom plate, and a central control box mounting plate is arranged above the central channel. According to the composite material front floor single bottom plate designed by adopting the structure disclosed by the invention, the characteristics of easy integration, large-scale manufacturing, small curing shrinkage rate and low linear expansion rate of the composite material are utilized, through the variable-thickness structural design ofthe composite material, one-time curing forming is conducted on a single mold pressing mold, the size precision and the appearance integrity of the assembly are improved, the weight of the bottom plate is greatly reduced, the number of molds, tools and detection tools is reduced, and thus the assembling and manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of automobile load-bearing body structure design, in particular to a passenger car composite material front floor single bottom plate and a preparation method thereof. Background technique [0002] The traditional metal front floor bottom plate is usually welded by split left bottom plate, central channel and right bottom plate. Because each split body needs to be stamped and formed by a metal mold, and then the split body needs to be welded into an integral base plate assembly. The number of stamping dies, assembly tooling and inspection tools used in it is large, the appearance integrity is poor, and the manufacturing cost is high; in addition, the assembly tolerance Repeated accumulation will result in a decrease in the dimensional accuracy of the product. [0003] The front floor of a traditional car is a metal structure, usually using a metal plate of equal thickness, which is punched into three monomers of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D25/20B62D29/04C08J5/24C08L63/00C08K7/06
CPCB62D25/20B62D29/043B62D29/046C08J5/24C08J2363/00C08K7/06
Inventor 马俊祥苑晓洁
Owner AVIC COMPOSITES
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