Digital twinning method and device for numerical control skin stretch-forming machine

Abstract

The invention belongs to the technical field of stretch forming, and relates to a digital twinning method of a numerical control skin stretch forming machine, which is used for a virtual machine end and comprises the following steps of: generating a digital twinning body corresponding to a physical machine; determining processing technology data of the entity machine through the digital twinborn body; acquiring motion data of the physical machine when the physical machine processes the product through the processing technology data; obtaining quality data of a finished product finally obtainedwhen the physical machine processes the product through the processing technology data; acquiring a plurality of groups of machining process data; adopting an optimization algorithm to screen and optimize the multiple sets of machining process data, wherein the screening optimization is carried out according to the motion data of the entity machine corresponding to each group of processing technology data and the quality data of the finished product; synchronizing the motion data of the entity equipment in production to the virtual machine end, so as to establish complete bidirectional communication between the digital twinborn body and the entity machine, and obtaining more optimized processing technology data through screening optimization.

Description

technical field [0001] The invention belongs to the technical field of stretch forming, and in particular relates to a digital twin method and device of a numerically controlled skin stretching machine. Background technique [0002] Stretch forming is when the two ends of the wool are clamped and stretched by the clamps of the stretching machine, the stretching die lifted by the workbench contacts the sheet, resulting in uneven plane tensile strain, which makes the sheet and the stretching Mold-fit forming method. Mainly used in aerospace, high-speed rail, and other industries. [0003] Digital twin technology is a digital expression of a physical product, so that we can see what might happen to the physical product on the digital product. In the process of digital design and digital production of digital products, the parameters of the simulation analysis model can be transferred to the full 3D geometric model defined by the digital product, and then transferred to the en...

AI Technical Summary

Problems solved by technology

[0005] In the existing digital twin technology, most of the data between the data model and the physical equipment is based on the data model. Except for the debugging stage of the physical equipment, the production dynamics of the physical equipment have not been applied to the data model, resulting in the data model There is no complete closed-loop communication with the physical device

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