Unlock instant, AI-driven research and patent intelligence for your innovation.

Machining method of large-format curve part inner wall micro-nano structure

A technology of curved surface parts and processing methods, which is applied in the field of processing micro-nano structures on the inner wall of large-format curved surface parts, and can solve problems such as inability to extinction, short life, and easy to pollute the lens

Active Publication Date: 2020-04-24
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of short service life, easy to pollute the lens, inability to extinction in special areas, and unstable functions in the traditional extinction method, the present invention provides a processing method for the micro-nano structure of the inner wall of large-format curved surface parts, using femtosecond laser on large-format curved surface The micro-nano structure is processed on the inner wall of the part to realize extinction and anti-reflection, which has the advantages of simplicity, high precision and high efficiency.
Due to the functional micro-nano manufacturing of the inner wall of large-format curved parts, there are problems such as mechanical interference between the laser processing head and the component, light blocking, etc., so that some special positions cannot be processed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Machining method of large-format curve part inner wall micro-nano structure
  • Machining method of large-format curve part inner wall micro-nano structure
  • Machining method of large-format curve part inner wall micro-nano structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] The traditional method of using laser to process the inner wall of curved components, such as figure 2 , Generally, it is processed obliquely from above the workpiece to be processed. Because the diameter of the curved surface component is small, there are a series of problems such as mechanical interference between the laser processing head and the component, blocking light or the laser cannot be normally incident on the processing surface, which makes some special positions 3 Processing is not possible. The invention uses femtosecond laser to process micro-nano structures on the inner wall of large-format curved parts, and specifically uses an aspherical mirror with adjustable length to focus and reflect the light beam emitted from the focusing module twice, so that the light beam is normally incident on the processing surface. , to en...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of laser machining, and particularly relates to a machining method of a large-format curve part inner wall micro-nano structure. The problems that a traditional extinction manner is short in service life, a lens is easily polluted, a particular area cannot be subjected to extinction, and the function is not stable can be solved. Particularly, a non-spherical reflector with the adjustable length can be adopted for carrying out secondary focusing and reflecting on a light beam emergent from a focusing module, the light beam is in normal incidence to a machiningsurface, and laser micro-nano machining precision and consistency can be ensured. The structure has the advantages of being long in service life, free of pollution and capable of machining any surface.

Description

technical field [0001] The invention belongs to the field of laser processing, and in particular relates to a processing method for the inner wall micro-nano structure of large-format curved parts. Background technique [0002] There are a large number of large-scale curved components in the aerospace field of our country, and the inner wall surface needs to be extinction and antireflection, which plays an important role in eliminating external and system stray light and improving the tactical performance indicators of aerospace systems. For example, for the extinction and anti-reflection of the inner wall of the hood of the astronomical telescope and the extinction and anti-reflection of the star-sensitive lens hood, the extinction and anti-reflection of the hood determines the ability of the satellite to resist stray light and affects the detection accuracy of the satellite, which is the key to its stable operation. [0003] Such components generally have the properties of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/02B23K26/046B23K26/36
CPCB23K26/02B23K26/046B23K26/36
Inventor 李珣李明
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI