一种基于DXF的二维工程图到三维实体的自动重构方法

By automatically identifying and processing geometric elements in DXF files and combining them with sheet metal processing parameters, efficient and accurate reconstruction from two-dimensional engineering drawings to three-dimensional solids is achieved, solving the problem of low efficiency in traditional manual modeling and ensuring the continuity and accuracy of the three-dimensional model.

CN121234427BActive Publication Date: 2026-07-17JIANGSU YAWEI MACHINE TOOL
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202511401314.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-28
Publication Date
2026-07-17
Estimated Expiration
2045-09-28

AI Technical Summary

Technical Problem

The traditional modeling process from 2D engineering drawings to 3D solids based on DXF relies on manual operation, which is inefficient and lacks accuracy, and cannot efficiently and automatically parse DXF geometric information and reconstruct 3D models.

Method used

An automatic reconstruction method based on DXF from 2D engineering drawings to 3D solids is adopted. By reading DXF file information, geometric elements are identified and classified, bending line information is extracted, non-bending curves are processed using a bidirectional traversal algorithm, bending lines are expanded by combining sheet metal processing industry parameters, and connection line compensation and curve segmentation are performed to construct a 3D solid model.

Benefits of technology

It achieves high-precision 3D model reconstruction, solves the geometric discontinuity problem caused by bending line offset, ensures lossless conversion between 2D process data and 3D model and full-process data traceability, and improves modeling efficiency and accuracy.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121234427B_ABST
    Figure CN121234427B_ABST
Patent Text Reader

Abstract

本发明公开了一种基于DXF的二维工程图到三维实体的自动重构方法,属于计算机辅助设计与智能制造领域,旨在解决传统人工建模效率低、精度差及折弯线偏移导致建模错误的问题。方法包括:读取 DXF 文件,转换二维数据为三维拓扑实体并分类存储几何元素与折弯线信息;处理工件曲线,通过双向遍历生成闭合环,拆分并结合工艺参数拓展折弯线,分阶段补全折弯线与轮廓间隙;分割曲线并区分折弯面、非折弯面;按钣金厚度拉伸面生成三维实体。本发明实现二维到三维自动重构,提升建模效率与精度,保障数据无损转换及全流程追溯,适用于机械设计、钣金加工等场景。
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Bent sheet metal part three-dimensional modeling and collision detection method, terminal and medium

    CN118365782A

  • Bending process planning method based on suboptimal experience inheritance

    CN120068401A