A VBO-based Efficient Geometry Simulation Method for Cutting Process

Abstract

The invention discloses a VBO-based high-efficiency geometric simulation method of the cutting process, which comprises the following steps: local Boolean operation of the tool / workpiece, establishment of a model bounding box, determination of local intersection positions, and fast Boolean operation; virtual voxel mapping, the workpiece The endpoints of the Tri-dexel model are mapped to the corresponding virtual voxels in the space; virtual voxel information encoding, encoding the patch data of the workpiece model in units of virtual voxels; voxel data management, storing voxel data in the video memory VBO The storage method in the memory is mapped to the system memory; the VBO data update, the model patch data stored in the video memory VBO is locally and efficiently updated; the visual rendering, the rendering pipeline is manually defined, and the model patch data in the video memory VBO is decoded and drawn to the screen. This method can reduce redundant calculation in the simulation process, realize local dynamic updating of the workpiece model, and greatly improve the efficiency of geometric simulation in the cutting process.

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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