一种基于深度学习的丝杠螺母内滚道型面稀疏重建方法

By interpolating and upsampling sparse measurement point clouds using helical spatial decoupling transformation and deep learning models, the problem of low detection efficiency of inner raceway in ball nuts is solved, achieving efficient and accurate reconstruction of inner raceway profile and improving the engineering practicality of the detection.

CN122415902APending Publication Date: 2026-07-17YANQIHU BASIC MFG TECH RES INST (BEIJING) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANQIHU BASIC MFG TECH RES INST (BEIJING) CO LTD
Filing Date
2026-06-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the detection method of the inner raceway of the ball nut cannot quickly obtain a complete and dense three-dimensional surface morphology, resulting in low detection efficiency and difficulty in achieving a comprehensive and efficient evaluation of the inner surface morphology of the entire deep hole spiral.

Method used

A spiral spatial decoupling transformation and a deep learning model are used to intelligently interpolate and upsample sparse measurement point clouds. The predicted point cloud is output through the reconstruction model of the sparse sample set. Combined with the loss function and inverse matrix operation, a dense point cloud set is generated to achieve rapid reconstruction of the inner roller track surface.

Benefits of technology

It improves the efficiency and accuracy of inner raceway measurement, and the generated dense point cloud has higher physical realism and geometric accuracy on key functional surfaces, significantly enhancing the engineering practicality and robustness of the inspection.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种基于深度学习的丝杠螺母内滚道型面稀疏重建方法,属于精密几何量测量技术领域,其包括构建稀疏样本集,输入模型输出预测点云;计算预测与全量点云差值并更新参数,输出密集重建模型;扫描待测丝杠螺母构建稀疏截面点云集;依导程参数生成解耦矩阵并映射出平面稀疏阵列;将平面稀疏阵列输入重建模型得出平面密集预测阵列;乘逆矩阵逆向解算输出三维密集点云集;计算三维密集点云与螺母距离输出偏差数据集。本发明采用螺旋空间解耦变换与深度学习模型对稀疏测量点云进行智能插值和上采样,能够从少量输入数据中快速重建出完整的内滚道三维密集点云,提升了复杂内腔曲面的测量效率与精度。
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