VBO-based efficient geometric simulation method for cutting process

Abstract

The invention discloses a VBO-based efficient geometric simulation method for a cutting process. The method comprises the following steps: performing local Boolean operation on a tool / workpiece, establishing a model bounding box, determining a local intersection position, and performing rapid Boolean operation; virtual voxel mapping: mapping end points of the workpiece Tri-dexel model to corresponding virtual voxels in a space; virtual voxel information coding: coding the surface patch data of the workpiece model by taking a virtual voxel as a unit; voxel data management: mapping a storage mode of voxel data in a video memory VBO to a system memory; VBO data updating: performing local efficient updating on the model patch data stored in the video memory VBO; and performing visual rendering, manually defining a rendering pipeline, decoding the model patch data in the video memory VBO, and drawing the decoded model patch data on a screen. According to the method, redundant calculation in the simulation process can be reduced, local dynamic updating of the workpiece model is achieved, and the efficiency of geometric simulation in the cutting machining process is greatly improved.

Description

technical field [0001] The invention relates to intelligent manufacturing numerical control processing technology, in particular to a VBO-based high-efficiency geometric simulation method for cutting processing. Background technique [0002] Intelligent manufacturing is an important guarantee for my country's transformation from a manufacturing power to a manufacturing power, and it is also the only way for the transformation and upgrading of the manufacturing industry. Accurate and efficient cutting simulation method has always been one of the core key technologies of CNC machining, and it is also an important bottleneck of domestic related industrial software. Intelligent NC machining puts forward higher requirements for real-time online cutting simulation capabilities. For example, digital twin technology, which has received more and more attention in recent years, has more and more expectations for near-real-time, high-precision cutting simulation algorithms. [0003] M...

AI Technical Summary

Problems solved by technology

For geometric simulation, where the shape of the workpiece changes dynamically and the amount of data is large, the time and cost of copying and transmitting the data is high, which becomes the performance bottleneck of the simulation algorithm.

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