Automatic identification method for three-dimensional data of workpiece to be transferred

Abstract

An automatic identification method for three-dimensional data of a workpiece to-be-transferred is characterized by comprising the following steps: marking data of structural features such as the length, the width, the area and special identification of the to-be-produced workpiece on a three-dimensional model of the to-be-produced workpiece; loading the three-dimensional model marked with the structural features to software with a slicing function; extracting data of a flow edge of the three-dimensional model through data filtering analysis, where the flow edge is an edge which contains the same edge and has an included angle of normal vectors of two triangles larger than a set threshold value; subjecting the flow edges to preliminary filtering, where the preliminary filtering condition is that the flow edges are in the same plane and are connected end to end; collecting the flow edges meeting the preliminary filtering condition into a data set of the flow edges, and otherwise, the removing flow edges; and matching the flow edges meeting the requirements with the structural features of the three-dimensional model, and marking the qualified matched flow edges as a transfer stress structure. Therefore, the workpieces can be quickly transferred.

Description

technical field [0001] The invention relates to the technical field of information data, in particular to a method for automatically acquiring three-dimensional data. Background technique [0002] 3D printing, especially 3DP printing of powder bonding, is manufactured by spraying adhesive on the laid powder plane and bonding layer by layer. In addition to the advantages of high precision, it also has the advantages of inkjet bonding efficiency High, fast forming, can realize large-scale, large-scale additive manufacturing. [0003] In the data preparation stage of 3DP printing, it is necessary to use CAD modeling software to draw the 3D data of the model to be printed, and generally output it in STL, OBJ and other formats. Then use the 3D model slicing software to slice the model data according to a certain height interval, obtain the cross-sectional graphics corresponding to the height of each layer, and provide it to the 3DP device in a fixed format for inkjet printing. ...

AI Technical Summary

Problems solved by technology

[0005] In view of the difficulty in determining the three-dimensional data of the workpiece to be transferred above, it is necessary to propose an automatic identification method for the three-dimensional data of the workpiece to be transferred. Automatically identify the mark, and calculate the three-dimensional data of the workpiece to be produced according to the automatic identification mark, thereby avoiding the problem of difficult operation and low efficiency of receiving the marked workpiece material to be transferred

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