一种基于内嵌物理模型驱动的补偿加工方法

By constructing an edge computing platform with an embedded physical model, real-time simulation and compensation of workpiece elastic deformation of the cutting tool are realized, which solves the problems of insufficient real-time performance and adaptability in the existing technology, improves machining accuracy and stability, and is applicable to a variety of cutting tools and workpiece materials.

CN121523220BActive Publication Date: 2026-07-17NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Application Number
CN202511717004.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-11-21
Publication Date
2026-07-17
Estimated Expiration
2045-11-21

AI Technical Summary

Technical Problem

Existing compensation machining methods have shortcomings in terms of real-time performance, model adaptability, and system integration. They are difficult to achieve rapid modeling, efficient simulation, and support adaptive online compensation, especially in high-precision machine tool and complex workpiece machining scenarios where they are difficult to effectively cope with dynamic errors.

Method used

An edge computing platform with an embedded physical model is constructed. Workpiece coordinate data is collected by the machine measurement program, the actual model is reconstructed, and simulation is performed using a finite element solver to calculate the elastic tool deformation distribution and generate the tool position coordinates after compensation, thereby realizing online closed-loop control.

Benefits of technology

It enables real-time simulation and compensation of workpiece elastic deformation during machining, improving machining accuracy and surface quality. It has good mechanism protection and versatility, is applicable to a variety of cutting tools and workpiece materials, lowers the operating threshold, and is easy to promote and apply in actual machining environments.

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Abstract

本发明涉及数控加工技术领域，具体涉及一种基于内嵌物理模型驱动的补偿加工方法；该方法包括在机床近端部署内嵌有物理模型的边缘计算平台；数控系统执行测量程序驱动在机测头采集工件坐标数据并上传至边缘计算平台，边缘计算平台重构工件实际模型并与理论模型对比计算加工余量分布；以余量分布为输入，调用边缘计算平台内有限元求解器仿真获得工件弹性让刀变形分布；基于反变形原理计算补偿刀位点坐标用于加工。本发明通过边缘计算平台与内嵌物理模型协同操作，实现了加工误差的测量‑计算‑补偿在线闭环控制，显著提升了补偿加工的实时性与精度，有效抑制了因切削力导致的让刀变形。
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Citation Information

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