Sapphire laser grooving device and grooving method thereof

Abstract

The invention relates to the technical field of laser machining and discloses a sapphire laser grooving device and a grooving method thereof. The sapphire laser grooving device comprises a laser device, a reflecting mirror, a beam expanding lens, a galvanometer, a focusing mirror, a platform and a computer. A to-be-machined sapphire sample is arranged on the platform; the reflecting mirror, the beam expanding lens, the galvanometer and the focusing mirror are arranged above the to-be-machined sapphire sample in sequence from top to bottom; the center of the reflecting mirror, the center of the beam expanding lens, the center of the galvanometer, the center of the focusing mirror and the center of the to-be-machined sapphire sample are located on the same straight line; the laser device is located on one side of the reflecting mirror; the computer is connected with the galvanometer. Compared with a traditional filling type scanning mode, the sapphire laser grooving device and the grooving method thereof have the advantages that a continuous curve mode is adopted, so that the laser grooving effect of machined sapphires is good, the edge breakage quantity is small and cross sections are smooth; besides, scanning is performed according to a spiral line formed by each layer of scanning track so that the problem of poor machining of laser joints during conventional laser scanning can be solved through the scanning tracks, the skipping problem caused by filling type scanning can be avoided, and the machining accuracy can be improved.

Description

technical field [0001] The invention relates to the technical field of laser processing, and more specifically, relates to a sapphire laser slotting device and a slotting method thereof. Background technique [0002] Sapphire has the characteristics of scratch resistance, abrasion resistance and corrosion resistance. Compared with other glasses, the advantages have long been understood by many people. However, due to the price of the material itself and the difficulty of processing, it has been difficult to be widely used. At present, sapphire The cost of materials and the gradual decline, and the technology in the field of laser micromachining has also developed rapidly, and it has great market application prospects for sapphire cutting, drilling, and grooving. At present, sapphire is mainly processed by diamond coated wire. Due to the high cost of diamond, and this processing method is contact processing, the diamond coated wire is easily damaged after being used to a cert...

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Problems solved by technology

[0003] The purpose of the present invention is to aim at the technical problems existing in the prior art, to provide a sapphire laser slotting device and its slotting method, which can solve the jumping problem caused by the filling and scanning method and the problem of poor processing of the connection

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