Laser drilling device for metal sheet and drilling method

Abstract

The invention relates to a laser drilling device for a metal sheet and a drilling method. The laser drilling device for the metal sheet comprises a laser device, a light path module, a jig and a dust removal mechanism. The light path module is used for adjusting the propagation direction of laser emitted by the laser device and adjusting the laser into a light spot with a preset size; the jig is used for fixing one end of the metal sheet, a groove is formed in the surface of the jig, cooling liquid is arranged in the groove, the back surface of the metal sheet is immersed in the cooling liquid, the front surface of the metal sheet is located outside the cooling liquid, and laser emitted by the laser device is emitted into the metal sheet from the front surface and is emitted out from the back surface; and the dust removal mechanism is used for adsorbing dust generated by drilling. The laser drilling device is low in cost, free of maintenance and high in drilling efficiency, the number of drilled holes per minute can exceed 200, the metal sheet is regularly deformed, and the precision of the holes can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of laser equipment, in particular to a laser drilling device and a drilling method for metal sheets. Background technique [0002] Metals such as stainless steel have the advantages of excellent corrosion resistance, heat resistance, low temperature strength and mechanical properties. They can be used in various industries and are common materials in industry and life. In the prior art, there are many ways of punching a metal sheet with a thickness of 0.1-0.3 mm, such as mechanical drilling, electric spark drilling, electrolytic drilling, ultrasonic drilling, electron beam drilling and laser drilling. Among them, laser drilling adopts non-contact drilling, which has the advantages of high efficiency, high precision, no consumables, simple operation, and adjustable hole type. It is more and more widely used. However, there are the following problems in laser drilling in the prior art: the maintenance of the ...

AI Technical Summary

Problems solved by technology

However, there are the following problems in laser drilling in the prior art: the maintenance of the laser drilling device is difficult and the cost is high; Press the metal sheet around, its purpose is to prevent the metal sheet from deforming

However, after four weeks of pressing the metal sheet, it still causes deformation of the metal sheet, resulting in poor hole size and position accuracy

Images