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Design method of double-curvature car door glass

A technology of door glass and design method, which is applied in computing, special data processing applications, instruments, etc., can solve problems such as failing to meet engineering design accuracy requirements, difficult to meet aerodynamic requirements, and glass movement instability, etc., to achieve high Actual value of engineering, improvement of fitting accuracy and motion quality, effect of improvement of development ability

Active Publication Date: 2016-09-21
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two main problems in this method: the deviation between the fitted torus and the actual glass surface is too large, which cannot meet the engineering design accuracy requirements; the glass motion is unstable, and it is difficult to meet the aerodynamic requirements

Method used

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  • Design method of double-curvature car door glass
  • Design method of double-curvature car door glass
  • Design method of double-curvature car door glass

Examples

Experimental program
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Embodiment

[0035] According to the front and side window glass model of a certain car model, combined with the actual fitting and motion laws of the double-curvature glass surface, the following figure 1 The input model of : point A and point G are the intersection points of the front and rear boundary lines and the upper boundary line respectively, points C and point E are the intersection points of the front and rear boundary lines and the waist line respectively, point B is the midpoint of AC, and point F is the intersection point of EG The midpoint, point D is the midpoint of CE, point H is the midpoint of AG in the vertical direction, and point K is the midpoint of FB in the vertical direction.

[0036] According to the modeling theory of the drum-shaped surface, the position of the drum axis is established first: make an arc line passing through the three points of EFG, and take its center O 1 , over O 1 Draw the axis L1 of arc 1, connecting O 1 F to O 1 is the origin, L1 is the...

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Abstract

The invention relates to a design method of double-curvature car door glass. The design method comprises the following steps: (1) according to the characteristics of the double-curvature glass and a modeling surface, determining a geometrical input model; (2) according to the input model, determining a parameterized drum shaft position; (3) according to a local coordinate system and the mathematical equation of a drum-shaped surface, establishing a parameterized drum-shaped surface model; and (4) cutting a drum-shaped surface outline, and generating a drum-shaped double-curvature glass surface. The design method of the invention improves a traditional ring surface design model, has a standardized guidance function on the optimization of the drum shaft position and the design of the drum-shaped double-curvature glass, is simultaneously favorable for improving the fitting precision and the movement quality of the double-curvature glass, reduces a fault rate, has a high engineering practical value, and is also a major requirement on improving the car body development capability of the car industry.

Description

technical field [0001] The invention relates to a double-curvature car door glass, in particular to a design method for a drum-shaped car door glass. technical background [0002] Today, with the rapid development of the automobile industry, the streamlined and aerodynamic requirements of the body are getting higher and higher. More and more cars use double-curvature side windows, and drum-shaped double-curvature side windows have become the main development direction of door glass. . In the traditional design process, the design of the door glass and its guidance system is a job that is highly dependent on the engineer's personal experience, and it no longer adapts to the rhythm of modern production in the fierce market competition. The design specification of the drum-shaped double-curvature side window has become a difficult point in the structural design of the car door. [0003] The horizontal and vertical curvature of double-curvature glass is greater than zero, so i...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/367
Inventor 高大威冯金芝郑松林黄星星肖丹赵礼辉张楠
Owner UNIV OF SHANGHAI FOR SCI & TECH
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