胎面花纹边界特征提取及重构方法研究

doi:10.3901/JME.2018.03.137

机械工程学报 ›› 2018, Vol. 54 ›› Issue (3): 137-147.doi: 10.3901/JME.2018.03.137

胎面花纹边界特征提取及重构方法研究

董玉德¹, 张荣团¹, 宋忠辉¹, 房玉强¹, 白苏诚², 张方亮²

1. 合肥工业大学机械工程学院合肥 230009;
2. 佳通轮胎中国研发中心合肥 230601

收稿日期:2016-12-20 修回日期:2017-06-10 出版日期:2018-02-05 发布日期:2018-02-05
通讯作者: 董玉德(通信作者),男,1966年出生,博士,教授。研究方向为计算机辅助设计(CAD/CAE/PDM)。E-mail:dydjiaoshou@126.com
作者简介:张荣团,男,1990年出生。研究方向为数字化设计与制造。E-mail:rongtuan_zhang@163.com
基金资助:
国家自然科学基金资助项目（51275145）。

Research on Boundary Features Extraction and Reconstruction for Tire Tread Patterns

DONG Yude¹, ZHANG Rongtuan¹, SONG Zhonghui¹, FANG Yuqiang¹, BAI Sucheng², ZHANG Fangliang²

1. School of Mechanical Engineering, Hefei University of Technology, Hefei 230009;
2. GITI TireChinaR&D Center, Hefei 230601

Received:2016-12-20 Revised:2017-06-10 Online:2018-02-05 Published:2018-02-05

摘要/Abstract

摘要： 为解决轮胎硫化工序中制造成型花纹与设计花纹存在偏差的问题，提出一种从胎面扫描数据中提取花纹边界特征并进行加工特征重构的新方法。该方法依据花纹节距排布和挤压压延成型工艺确定空间分割方案，利用轮廓设计理论和主成分统计分析方法获取胎顶轮廓曲线，从而实现三维点云向二维灰度图像（带有深度值）的转化，根据花纹的增长规律并借鉴区域增长法的思想对花纹边界特征进行识别和提取。结合三次样条插值法将花纹边界离散化处理为一簇等间距坐标点的形式，最终根据最佳一致逼近的定义实现自适应相切连续圆弧直线的花纹曲线逼近。实验结果表明，该方法可在90 s左右的时间内完成各种半钢子午线轮胎花纹的重构，特征提取误差不大于0.15 mm，重构误差绝对值均值不超过0.25 mm，最大值不超过0.4 mm。该方法不仅能快速有效提取胎面花纹边界特征并重构，并且解决了传统逆向工程技术在花纹重构中失真性的问题，为花纹开发效率的提高和综合性能的改善提供了指导方向。

关键词: 逼近, 加工特征, 逆向工程, 胎面花纹, 特征提取, 重构

Abstract: In order to solve the deviation problem between tread pattern and design pattern in the process of tire vulcanization, a new method is proposed to extract and reconstruct tread pattern feature from tire tread scan data. Firstly, A new space segmentation method is determined according to the pattern pitch arrangement and the extrusion and calendering process, secondly, obtained the Contour of the tire crest by contour design theory and principal component analysis method, and finally successfully transformed the dimensional point cloud to the two-dimensional gray image (with depth value). According to the growth rhythm of the pattern and the idea of regional growth law, the pattern border characteristics can be identified and extracted accurately. The cubic boundary spline interpolation method is used to discretize the pattern boundary into a series of equidistant coordinate points. And finally, the approximation of tread curve of Self-adaptive Tangent Continuous Circle and Line is realized according to the definition of optimal uniform approximation. The experimental results show that the method can be used to reconstruct the tire tread pattern of various semi-steel radial tire in about 90s, the feature extraction error is less than 0.15mm, the mean value of reconstruction error absolute value is less than 0.25mm, the maximum value is less than 0.4mm. This method can extract and reconstruct the tread pattern boundary feature effectively and deal the distortion problem in pattern reconstruction of traditional reverse engineering technology, as well as provides a direction for improvement of the efficiency of pattern development and the comprehensive performance of the tire.

Key words: approximation, feature extraction, machining feature, reconstruction, reverse engineering, tread pattern

中图分类号:

TP391

董玉德, 张荣团, 宋忠辉, 房玉强, 白苏诚, 张方亮. 胎面花纹边界特征提取及重构方法研究[J]. 机械工程学报, 2018, 54(3): 137-147.

DONG Yude, ZHANG Rongtuan, SONG Zhonghui, FANG Yuqiang, BAI Sucheng, ZHANG Fangliang. Research on Boundary Features Extraction and Reconstruction for Tire Tread Patterns[J]. Journal of Mechanical Engineering, 2018, 54(3): 137-147.

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胎面花纹边界特征提取及重构方法研究

Research on Boundary Features Extraction and Reconstruction for Tire Tread Patterns

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