Detection device for spacial transmission pointing precision of machining light beam

Abstract

The invention discloses a detection device for spacial transmission pointing precision of a machining light beam. The detection device comprises a laser generation part, a light path part, a galvanometer system and a detection part; a laser device, a beam expander and a reflector I are sequentially fixed on a light path in the horizontal direction; an azimuth rotary light passing shaft and a reflecting mirror II are fixed on the light path in the vertical direction; a pitching rotary light passing shaft and the azimuth rotary light passing shaft are arranged in the light path in a connected mode; the galvanometer system is located behind the pitching rotary light passing shaft and is connected to a driving motor in a galvanometer; and position sensitive chip arrays are fixed on a horizontal display rack and a vertical display rack respectively and control the pointing of the laser beam emitted into the galvanometer through an industrial personal computer. The invention provides the detection device for the spacial transmission pointing precision of the machining light beam. The detection device has the advantages that a light beam pointing closed-loop control experiment can be realized, manual intervention is not needed, and high-speed and high-precision control over the laser beam can be realized.

Description

technical field [0001] The invention relates to a laser beam precision control system, in particular to a processing beam spatial transmission pointing precision detection device. Background technique [0002] Laser processing is to use the energy of light to reach a high energy density at the focus point after being focused by the lens, and to process by the photothermal effect. Laser processing does not require tools, the processing speed is fast, and the surface deformation is small. Compared with traditional processing technology, laser processing technology has the advantages of less material waste, obvious cost effect in large-scale production, and strong adaptability to processing objects. [0003] Laser processing is non-contact processing, and the energy of the high-energy laser beam and its moving speed can be adjusted. It can process a variety of metals and non-metals, especially materials with high hardness, high brittleness and high melting point. Laser can b...

AI Technical Summary

Problems solved by technology

[0004] However, when processing large-scale components by laser, the pointing accuracy of the laser beam is affected by the assembly and movement accuracy of the components in the transmission optical path, and it is often difficult to meet the high-precision requirements, thus affecting the processing quality of the components.

Therefore, it is necessary to address the limitations of existing laser processing equipment such as poor stability and low precision, and propose a processing beam space transmission pointing accuracy detection device that meets the requirements of high-speed, high-precision processing and can automatically compensate.

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