Machining trajectory generation method for machining Fresnel microstructural arrays by precise lathe

A technology of microstructure array and machining trajectory, which is applied in the field of ultra-precision machining of complex parts, can solve the problems of roughness influence, complex calculation, and large change in the direction of tool combined speed, etc., to reduce roughness, improve dimensional accuracy, and improve consistency sexual effect

Inactive Publication Date: 2018-07-20
GUANGDONG UNIV OF TECH
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Problems solved by technology

However, the coordinate calculation of this method is complicated, and the combined speed direction of the tool r

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  • Machining trajectory generation method for machining Fresnel microstructural arrays by precise lathe
  • Machining trajectory generation method for machining Fresnel microstructural arrays by precise lathe
  • Machining trajectory generation method for machining Fresnel microstructural arrays by precise lathe

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] figure 2 It is a schematic diagram of the processing system of the embodiment of the present invention. The C axis with angular positioning is used as the main axis, and the C axis can realize the linkage with the XY axis. The workpiece is fixed on the C-axis, and the XY-axis moves correspondingly according to the rotation angle of the C-axis. The three-axis linkage forms the final trajectory of the tool on the surface of the workpiece, thereby forming the ...

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Abstract

The invention relates to a surface machining method for Fresnel microstructural arrays. The method can be applied to a ultra-precise machine tool with four or above axles; a single-point diamond turning tool is used for machining; and during machining, the turning tool is mounted on a C-axle main shaft, and workpieces are mounted on a Z axle. According to a method of adopting XYC-axle linkage in the machining process and a principle of overlapping the edge direction of the turning tool with the ring tangent direction of Fresnel structures of the workpieces, machine tool XYZ-axle values and C-axle angles corresponding to each circle of trajectory coordinate points of Fresnel subunits on the workpieces are calculated; conversion of cutting points between a workpiece coordinate system and a lathe coordinate system is finished through the method; and complete machining trajectories are generated. Ultra-precise machining of the Fresnel microstructural arrays is realized; and the cutting direction and the speed direction of a cutter relative to the workpieces are consistent with the Fresnel circular tangent direction.

Description

technical field [0001] The invention belongs to the technical field of ultra-precision machining complex parts manufacturing, and relates to a surface processing method of a Fresnel microstructure array. Background technique [0002] The Fresnel structure is a commonly used lens structure in modern optics. It is composed of a series of concentric rings, and its surface is equivalent to "collapsing" part of the traditional convex or plano-concave lens onto the plane. Viewed in section, the surface profile is a series of zigzag grooves, and the central part is a circular arc. Each ring zone on the surface of the Fresnel structure can be regarded as an independent lens, which realizes the convergence or divergence of the light path. The overall optical effect is equivalent to that of a traditional lens, but the overall thickness is much smaller, which also makes the absorption loss of the lens It has the advantages of light structure, good light transmission performance, low m...

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Application Information

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IPC IPC(8): B23B1/00
CPCB23B1/00
Inventor 林泽钦陈新度刘军辉王素娟吴磊
Owner GUANGDONG UNIV OF TECH
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