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Car headlights with light pattern automatic modeling system development

Author: XiaTian
Tutor: DanYan
School: Zhejiang University
Course: Chemical Process Equipment
Keywords: UG secondary development Open GRIP Automobile headlights. Light distribution pattern
CLC: U463.6
Type: Master's thesis
Year: 2006
Downloads: 187
Quote: 2
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Abstract


With the social development and people's living standards improve, the car gradually into people's lives. Automotive manufacturing technology to promote the continuous development and progress constantly updated as automotive lighting and signaling devices automotive headlight technology. Automobile headlights light distribution pattern is the main structure of the car headlights for light adjustment and light distribution function, a direct impact on the safety performance of vehicles and the use of performance. A variety of light distribution pattern is often encountered in the process of reverse engineering techniques to the development of new products for automobile headlights, side light distribution pattern, the columnar light distribution pattern, the triangle light distribution pattern, the fish-eye light distribution pattern, pyramid light distribution pattern, the four corners of electroforming pattern, hexagonal pseudo-electroforming pattern and the hexagonal deformation electroforming pattern. Traditional modeling methods manually generate a light distribution pattern, but because of the type and quantity of the light distribution pattern, plus some of the light distribution pattern CNC programming, so the workload is too light distribution pattern modeling and programming, inefficient. This article will detail 3D software UG-based environment, with its secondary development language Open GRIP development of automobile headlights light distribution pattern automatic modeling system. The main task of the car headlights light distribution pattern automatic modeling system two categories: secondary development of the secondary development of the basic functions, application functions. Secondary development of the basic functions, including multi-curved plane seeking cross and validity of the judgment, curved surfaces (non) uniform bias as well as general-purpose grid generator entity array on the surface; secondary development of application functions including nine mutual standalone application, three kinds of strip light distribution pattern automatic modeling program (side light distribution pattern, columnar light distribution pattern, the triangular light distribution pattern), three four corners with light unit automatically modeling program (fish eyes light distribution pattern, the pyramid light distribution pattern, the four corners of electroforming pattern) and three profiled automatic modeling program (pseudo-hexagonal electric casting pattern, hexagonal deformation electroforming pattern, Torx light distribution unit) of the light distribution unit. This article will elaborate on each of the light distribution pattern geometry and modeling principles, programming ideas and steps, the difficulties encountered in the programming process, and solve these difficult theoretical basis and specific algorithms. Test and applications show that the system has greatly improved the efficiency and quality of the car headlights light distribution pattern modeling and NC programming, minimizes the hand-modeling may produce a variety of defects and errors, and to ensure the light distribution pattern modeling The accuracy and precision of lights product development cycle is shortened, resulting in a considerable economic benefits.

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