A Design Method to Solve the Inconsistency of the Highlights of the Body Shape

A design method and body technology, applied in geometric CAD, special data processing applications, etc., can solve problems such as 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: 2022-06-24
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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  • A Design Method to Solve the Inconsistency of the Highlights of the Body Shape
  • A Design Method to Solve the Inconsistency of the Highlights of the Body Shape
  • A Design Method to Solve the Inconsistency of the Highlights of the Body Shape

Examples

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Effect test

Embodiment 1

[0040] like figure 1 As shown, the front cover is not related to the highlight trend of the bumper face, the mask system is straight from the middle and then goes down to both ends, the bumper is concave from the middle to the two ends and gradually descends, and the highlight trend tends to be the same after the change (such as figure 2 shown).

Embodiment 2

[0042] The trend of D320 side wall system profile highlights gradually descends from the front of the car to the rear of the car (such as image 3 In terms of modeling concept, the trend of highlight should be consistent with the trend of the main modeling feature line (waist line, side contour line). the trend is consistent (such as Figure 4 In terms of profile feel, the light and shadow flow freely with the body characteristics, regular and orderly, gorgeous and colorful, and the profile quality feels good, and the latter image is obviously better than the former.

Embodiment 3

[0044] Step 1: Take the basic surface of the mask as an example, the initial light and shadow are as follows Figure 5 As shown (the light source in the next step is the Z direction, and the Z direction light source is very important for the highlight inspection of the profile quality), according to the light and shadow effect, it shows that the U\V is straight without radian, and there is no feature change, and the profile design rules require U, The radian in the V direction is required to ensure that the appearance of the appearance parts is full and powerful.

[0045] The second step: as Image 6 Light and shadow, two control points (select) are arranged horizontally in the U direction of the profile and pulled up along the Z direction. The size of the pull-up vector can be determined according to the change of light and shadow and the designer's expectation of light and shadow. The control point vector is attenuated as a whole. Changes, the V-direction flat radian is 1mm...

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Abstract

The invention discloses a design method for solving the inconsistency of highlights on the profile of a vehicle body. It includes the following steps: find out the main shape features of the front view of the car body; find out the main shape features of the front view of the car body; find out the transition features between the two views of the car body; The front view analyzes the highlight trend of the main modeling features; the light source is viewed from the X, Y, and Z directions of the body coordinates to view the profile highlights corresponding to the front view and the front side view, and the highlight is required to be consistent with the trend of the feature line, and the highlight arc Full, with the two dimensions of highlight convex and concave as the judging standard, no convex and concave undulations, only single convex and single concave distribution, high light density and uniformity, smooth highlights between parts without sudden changes. According to the invention, the profile deviation caused by profile highlight adjustment is very small, which will not lead to changes in the internal structure of parts, and will not cause changes in engineering layout and structure.

Description

technical field [0001] The invention belongs to the technical field of vehicle body appearance, and in particular relates to a design method for solving the inconsistency of vehicle body profile highlights. Background technique [0002] The general requirements for the evaluation and control of profile highlights meet the following aspects: (1) In the early stage of surface A, the highlight trend of the basic surface of the car body should be planned, that is, the highlight trend of the profile (surface A) tends to be consistent with the modeling feature line (2) For the relationship between the profile highlight trend and the control points, it is required that the light and shadow changes, the number and arrangement of control points, and the direction of movement form a design specification; (3) The deviation of the profile due to the adjustment of the highlight It is required to be within a reasonable range to avoid changes in the internal structure caused by large chang...

Claims

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Application Information

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Patent Type & Authority Patents(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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