STL model-based tool path generation method, intelligent terminal and storage device

Abstract

The invention provides an STL model-based tool path generation method, an intelligent terminal and a storage device. The generation method comprises the following steps: S101, obtaining an STL model, eliminating redundant information in the STL model through a Hash algorithm, and carrying out the topological information reconstruction and broken surface repair of the STL model; S102, obtaining region division information according to the classification information of the feature edges in the STL model, and carrying out process distribution through the region division information; and S103, obtaining a tool contact point set, constructing a tool path, and carrying out fairing processing on the tool path through collision points and tolerances in the tool contact point set to form a fairing tool path. The precision and efficiency of imported data are improved, the problem of tool path generation failure is reduced, the optimal procedure of importing model features and allocating corresponding features is automatically identified, the actual machining efficiency and the machining quality are improved, the influence of complex calculation curves on the tool path generation efficiency is avoided, and the tool path precision is improved by performing fairing processing on the tool path..

Description

technical field [0001] The invention relates to the field of workpiece processing, in particular to a tool path generation method based on an STL model, an intelligent terminal and a storage device. Background technique [0002] In CAM (Computer Aided Manufacturing, computer-aided manufacturing), the commonly used tool path generation method is to obtain the tool contact set by intersecting the discrete points of the model with the tool contacts, and then sort the tool contacts to obtain an ordered tool path (tool bit set). [0003] In order to improve the accuracy of the tool path, the following treatments are often done: [0004] (1) Process the imported data, such as importing 3D point cloud data, STL (STereoLithography, stereolithography) data, digital image data, STL redundant data, etc. [0005] (2) Usually, the tool position is determined according to the differential geometric properties at the position corresponding to the tool contact surface and the tool type, a...

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the deficiencies of the prior art, the present invention proposes a tool path generation method based on the STL model, an intelligent terminal and a storage device, and uses a hash algorithm to reconstruct the topology information imported into the STL model, which greatly improves the accuracy and efficiency of the imported data; Repair the STL file error, effectively solve the problem of tool path generation failure caused by the STL file error; automatically identify the imported model features, and automatically assign the best process for the corresponding feature, which greatly improves the actual processing efficiency and processing quality; use the NUBRS curve theoretically The control points can be infinitely increased without affecting its computational complexity, avoiding the influence of complex calculation curves on the efficiency of tool path generation; using the tolerance discrete interpolation method to introduce machining accuracy to smooth the tool path, greatly improving tool path accuracy

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