随动线束塑形建模方法

Modeling method for shaping follow-up wire harnesses

摘要

针对多根线缆组成的线束物性难以表征、空间塑形效率低、一致性不高等问题，本文将测量与理论相结合，提出一种随动线束塑形建模方法。首先，采用跟踪式三维扫描仪对线束线形进行测绘，综合考虑轮廓采集点偏离中线的影响，得到实际连续线束线形中线的空间离散数据点。其次，调整线缆物性，基于有限质点法对理论线束线形进行求解，并与实际线束线形比对，二者接近时的物性即为反演的参数。最后，对提取到的质点位置数据拟合为曲线，得到理论线束线形中线，使用三维软件生成阴模，再3D打印成线束塑形工装。实际生产表明，该方法极大地提高了线缆塑形效率和一致性。

Abstract

Aiming at the problems such as the difficulty in characterizing the physical properties of wire harnesses composed of multiple cables, low spatial shaping efficiency, and poor consistency, this paper combines measurement with theory and proposes a modeling method for the shaping of follow-up wire harnesses. Firstly, a tracking 3D scanner was used to map the alignment of the wire harness. Considering the influence of the deviation of the contour collection points from the centerline comprehensively, the spatial discrete data points of the centerline of the actual continuous wire harness alignment were obtained. Secondly, adjust the physical properties of the cable. Based on the finite particle method, solve the theoretical wiring harness alignment and compare it with the actual wiring harness alignment. The physical properties when the two are close are the parameters for inversion. Finally, the extracted particle position data is fitted into curves to obtain the theoretical midline of the wire harness shape. A negative mold is generated using 3D software and then 3D printed into a wire harness shaping fixture. Actual production shows that this method has greatly improved the shaping efficiency and consistency of cables.

关键词

线束塑形 / 线形测绘 / 有限质点法 / 物性反演

Key words

Wire harness shaping / Linear mapping / Finite particle method / Physical property inversion

参考文献

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