Curved surface workpiece surface array microstructure graph layout method

A technology for surface workpiece and graphic layout, applied in manufacturing tools, metal processing equipment, welding equipment, etc., can solve the problems of micro-structure graphic layout and processing deviation, tool orientation error projection splicing error, not considering errors, etc., to eliminate the layout. The effects of machining errors, easy adjustment, and neat spatial orientation

Active Publication Date: 2015-07-01
WENZHOU UNIVERSITY
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AI Technical Summary

Problems solved by technology

The first method is to conduct offline virtual design based on the theoretical workpiece model and then process the actual workpiece online. However, since any free-form surface workpiece has machining tolerances during the processing of its free-form surface shape, this method does not consider the actual workpiece. ...

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Embodiment Construction

[0023] The present invention will be described in further detail below in combination with specific embodiments.

[0024] The invention provides a surface array microstructure graphic layout method of a curved surface workpiece. By adopting the method, a periodic array microstructure can be arranged and prepared on a given free-form surface workpiece surface with a smooth surface, and then the array microstructure can be laid out. Processing; wherein, the periodic unit spacing between the unit microstructures that constitute the periodic array microstructure is D; the definition of the periodic unit spacing is the arc length along the curved surface between the respective geometric center points of any two unit microstructures or Space straight-line distance (choose one of the two, once determined, it will be consistent throughout the method). If the periodic unit spacing defines the arc length along the curved surface, then the "distance" mentioned in the present invention al...

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Abstract

The invention provides a curved surface workpiece surface array microstructure graph layout method. The method includes the following steps that the boundary dimension of the surface of a free curved surface workpiece is measured through a reverse engineering method, and a reconstructed curved surface is obtained; the reconstructed curved surface is divided into a plurality of curved surface equilateral triangles distributed in a seamless mode; the vertex coordinates Pi of all the nonredundant curved surface equilateral triangles are recorded, and the tangent planes Ki and the outer-normal vectors Vi of the positions of the reconstructed curved surface where the Pi is located are worked out; in all the tangent planes Ki or the planes parallel to the tangent planes Ki, the Pi points corresponding to the tangent planes Ki serve as the geometric center points, design graphs Gi of a unit microstructure are correspondingly distributed, and the requirement that the inclined angles between the same corresponding feature edge line of the design graphs of all the tangent planes and the projection lines of space benchmark vectors in the Ki are fixed values respectively is met. According to the curved surface workpiece surface array microstructure graph layout method, the calculation scale is stable, convergence is maintained, layout efficiency is high, and the layout and machining error of the surface array microstructure graphs can be completely eliminated.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a layout method for array microstructure graphics on the surface of a curved workpiece. Background technique [0002] In the field of mechanical industry and electronic industry, it is often necessary to prepare array microstructures on the surface of the formed free-form surface workpiece. Microstructure refers to the tiny topological shape of the surface with a surface shape accuracy of submicron level and surface roughness of nanometer level with specific functions. The most important feature of microstructure is the functionality of its structure. For example, the surface structure of microstructure surface optical components determines the reflection, transmission or diffraction performance of light, which is convenient for optical designers to optimize the optical system, reduce weight and reduce volume. Another feature is that they generally have a la...

Claims

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Application Information

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IPC IPC(8): B23K26/352
Inventor 曹宇魏鑫磊李春林王艳虎张健
Owner WENZHOU UNIVERSITY
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