Device for processing aluminum oxide ceramic by fiber laser and method thereof

Abstract

The invention relates to a device for processing aluminum oxide ceramic by fiber laser and a method thereof. The device comprises a laser, a collimating mirror, an optical rotation system and a focusing mirror which are sequentially arranged along an optical path, wherein laser is emitted by the laser, runs through the collimating mirror and is converted to parallel light beams by divergent light; the collimated light beams are shaped by the optical rotation system; the optical rotation system is used for forming the parallel light beams as circular light rings with uniform energy distribution; the shaped light beams enter the focusing mirror to collect the laser; an auxiliary positioning image system is matched for controlling laser punching positions and is used for punching with high accuracy and monitoring the punching process in real time; the ceramic drilling, marking and cutting functions are implemented; different micorpores (D is smaller than or equal to 1mm) are punched in a single laser point; the device has the advantages of small light spots, high efficiency and low cost.

Description

technical field [0001] The invention relates to a device and method for processing alumina ceramics with fiber laser. Background technique [0002] With the development of science and technology, the application of ceramics in industries such as electronic products and LED lighting is becoming more and more extensive. According to the scope of application of ceramics, it can be divided into two types: one is functional ceramics, which can be used as Components are used in the field of electronic engineering; the other is structural ceramics, which are widely used as structural parts because of their significant advantages in high melting point, strength, chemical stability, mechanical and thermal properties, service life and reliability. use. [0003] For sintered ceramics, machining (diamond grinding) has been considered the most reliable and ideal processing method so far, which can meet the requirements of finished products with high dimensional accuracy and high surfac...

AI Technical Summary

Problems solved by technology

Compared with CO2 laser processing, due to its longer wavelength, restricted by lens aberration, diffraction and other factors, the processed spot (including heat-affected zone) is nearly 100um, which is difficult to meet the application of ceramics; and for shorter wavelength processing Although ultraviolet laser (355nm) and green light (532nm) have small spots, they are restricted by factors such as nanosecond pulse width, high frequency, low laser power (<50W) and expensive lasers, which make their efficiency in ceramic processing greatly improved. Reduced and unable to carry out industrial applications

For the above requirements, traditional processing methods and devices are difficult to meet

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