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Wind tunnel vehicle model and manufacturing method thereof

A manufacturing method and model technology, applied in the field of wind tunnel car model and its manufacturing, can solve the problems of large cost and long cycle, and achieve the effect of reducing cost, reducing demand, and shortening the change process cycle.

Pending Publication Date: 2019-01-01
SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that it takes a long time to change the model of the wind tunnel car, usually 4 weeks. Due to the new design and manufacture of molds, the cost is huge, which cannot meet the needs of wind tunnel experiments.

Method used

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  • Wind tunnel vehicle model and manufacturing method thereof
  • Wind tunnel vehicle model and manufacturing method thereof
  • Wind tunnel vehicle model and manufacturing method thereof

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Embodiment Construction

[0035] refer to figure 1 as shown, figure 1 A flowchart of a method for manufacturing a wind tunnel car model according to an embodiment of the present invention is disclosed. The manufacturing method of this wind tunnel car model comprises the steps:

[0036]101. Data preparation step. According to the chassis data and appearance modeling data, the outer modeling data surface is determined, and the outer modeling data surface is used as the reference, and the data surface of the skeleton installation, the end surface parts installation data surface and the rough machining data surface are determined by offsetting inward respectively. The wind tunnel car model of the present invention is a 1:1 model, and the chassis generally adopts a batch body chassis, and the appearance of the body has original design data. According to the chassis data and the exterior modeling data, the exterior modeling data surface of the vehicle body can be determined. On the basis of the external ...

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Abstract

The invention discloses a manufacturing method of a wind tunnel vehicle model. The method comprises the steps of data preparation, skeleton making, blank establishment, blank rough-machining, end-surface part manufacture, vehicle body assembly, whole vehicle fine-finishing and mold adjustment. The invention also provides the wind tunnel vehicle model which comprises a chassis, a skeleton, an establishment material, end-surface parts and a greasy filth layer. According to the wind tunnel vehicle model and manufacturing method thereof, local model change can be completed in the greasy filth layer, and requirement for making glass-reinforced plastic parts again are reduced. The change period of the wind tunnel vehicle model is shortened greatly, the cost is reduced greatly, the wind tunnel model is changed rapidly and efficiently, and requirements of wind tunnel experiments can be met.

Description

technical field [0001] The invention relates to the field of industrial model design, more specifically, relates to a wind tunnel car model in an automobile wind tunnel experiment and a manufacturing method thereof. Background technique [0002] A wind tunnel is a pipeline-shaped experimental device that can artificially generate and control airflow to simulate the flow of gas around an object, measure the effect of airflow on an object and observe physical phenomena. It is the most commonly used and most effective method for aerodynamic experiments. tool. [0003] Automotive wind tunnel testing plays a pivotal role in the entire vehicle development process. When the car is running, most of the resistance comes from air resistance, F (air resistance or wind resistance) = kV 2 , k is a coefficient, and V is the vehicle speed. Among them, k is generally determined by the cross-section of the vehicle and the drag coefficient. When the speed of the car reached 110 km / h, the ...

Claims

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Application Information

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IPC IPC(8): G01M9/08
CPCG01M9/08
Inventor 汪永辉朱叶勤林芳杨竹君
Owner SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
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