Flying plate driving type laser micro-welding method and device

Abstract

The invention relates to welding field, especially relates to a flying slice driving laser microwelding method and device, adapted to quick welding between homogeneous or heterogeneous metallic materials. The invented device is composed of a laser, a reflection mirror, a focusing lens, a focusing lens supporting frame, a focusing lens moving platform, a confinement layer, a confinement layer supporting frame, a confinement layer moving platform, a worktable, a three-dimensional moving platform, a L-shaped base, a CCD cam, a D / A converter, an image gathering card, and a computer. The single pulse laser controlled by the computer accurately acts on the front surface of the flying slice to generate explosion plasma which drives the workpiece adhering tightly to the back of the flying slice to moving with a high speed while driving the flying slice moving with a high speed, the flying slice collides with the base after flying for a distance, and high temperature and high pressure are generated on the colliding boundary to implement welding between the workpiece and the base. The invented method and device realize low cost and high efficiency of microwelding, are provided with simple technique and good compatibility, and are suitable for automated production.

Description

technical field

[0001] The invention relates to the field of welding, in particular to a flyer-driven laser micro-welding method and device, which is suitable for rapid welding between the same or different metal materials, especially suitable for welding micro-metal devices, and can ensure high micro-welding Quality and high efficiency. Background of the invention

[0002] Micro-devices are more and more widely used in various fields such as aerospace, medical and health, telecommunication electronics, precision instruments and national defense. Traditional micro-forming technology is limited by material properties and micro-scale factors, which brings great challenges to the processing of micro-devices. It is difficult to rely solely on the plastic forming technology of materials to meet the needs of industrial production. Welding technology plays an important role in the manufacturing industry because it can quickly and effectively realize the connection of materials of ...

Images