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Design method for solving inconsistent highlight of vehicle body profile

A design method and body technology, applied in special data processing applications, geometric CAD and other directions, can solve the problems of time-consuming and labor-intensive, low work efficiency, uncontrollable profile quality, etc., to avoid half-way rework, save manpower, shorten The effect of the project cycle

Active Publication Date: 2021-01-29
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology has the following defects: 1. There is no standard in the industry for the consistency of highlight trend and shape features. Once the highlight is readjusted in the later stage, it will take a lot of time and manpower; 2. The existing control point adjustment technology has low work efficiency , surface quality is uncontrollable

Method used

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  • Design method for solving inconsistent highlight of vehicle body profile
  • Design method for solving inconsistent highlight of vehicle body profile
  • Design method for solving inconsistent highlight of vehicle body profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, there is no relationship between the front mask and the highlight trend of the bumper profile. The mask system is straight from the middle and then descends to both ends. figure 2 shown).

Embodiment 2

[0042] D320 side wall system profile highlight trend gradually descends from the front of the car to the rear of the car (such as image 3 As shown), from the perspective of modeling concept, the highlight trend should be consistent with the trend of the main shape feature line (waist line, side contour line). The trend remains the same (such as Figure 4 As shown); in terms of surface feeling, light and shadow flow freely with the characteristics of the body, regular and orderly, gorgeous and colorful, and the quality of the surface is good, while the latter picture is obviously better than the former.

Embodiment 3

[0044] Step 1: Taking the basic surface of the mask as an example, the initial light and shadow are as follows Figure 5 As shown (the light source for each step in the future is in the Z direction, and the Z-direction light source is very important for the high-gloss inspection of the surface quality), according to the light and shadow effect, it shows that U\V are straight and have no radians and no characteristic changes. The surface design rules require U, The V direction requires radians to ensure that the appearance parts are full and powerful.

[0045] The second step: if Figure 6 Light and shadow, pull up along the Z direction according to the two control points (select) arranged horizontally in the U direction of the profile. The size of the pull-up vector can be determined according to the light and shadow changes and the designer's expectations for the light and shadow. The control point vector is attenuated as a whole Change, the V-direction flat arc is 1mm (cont...

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Abstract

The invention discloses a design method for solving the problem of inconsistent highlight of a vehicle body profile. The method comprises the following steps: finding out main modeling characteristicsof a front side view of a vehicle body; finding out main modeling characteristics of the front view of the vehicle body; finding out transition characteristics between two views of the vehicle body;analyzing the highlight trend of the main modeling features from a front side view; analyzing the highlight trend of the main modeling features from the front view; profile highlight conditions corresponding to a front view and a front side view of a light source are respectively checked from X, Y and Z directions of vehicle body coordinates, highlight is required to be consistent with a characteristic line trend, highlight radian is full, highlight convex and concave dimensions are taken as judgment standards, convex and concave fluctuation cannot occur, only single convex and single concavedistribution and uniform highlight density can occur. Highlight among components is smooth without sudden change. According to the invention, profile deviation caused by profile highlight adjustment is very small, and the change of the internal structure of a part and the change of engineering arrangement and structure cannot be caused.

Description

technical field [0001] The invention belongs to the technical field of car body appearance, and in particular relates to a design method for solving the inconsistency of highlights on the profile of a car body. Background technique [0002] The following aspects are generally required for profile highlight evaluation and control: (1) In the initial stage of surface A, the highlight trend of the basic profile of the car body should be planned, that is, the highlight trend of the profile (A surface) tends to be consistent with the shape characteristic line (2) For the relationship between the highlight trend of the profile and the corresponding control points, it is required to form a design specification for the change of light and shadow, the number and arrangement of the control points, and the direction of movement; (3) The deviation of the profile due to the adjustment of the highlight It is required to avoid changing the internal structure due to large surface changes wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15
CPCG06F30/15
Inventor 吴志刚李洪亮邱艺雯安晨然黄太强苗博杨海琼
Owner DONGFENG COMML VEHICLE CO LTD
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