High-power optical fiber laser welding machine

A technology of fiber laser and fiber laser, applied in laser welding equipment, welding equipment, excitation method/device, etc., to achieve improved heat dissipation, high energy stability, and avoid thermal effect problems

Active Publication Date: 2014-08-06
杭州奥克光电设备有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of reducing the thermal effect of the coupling node in the fiber laser welding process, increasing the output power, clarifying the number of segmented couplings and the optimal coupling distance, and providing a reasonable high-power fiber laser welding machine, using the equation , determine a reasonable number of segmented coupling numbers, optimize the optical quality of the laser output, and reduce the damage of the pump light to the end face

Method used

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  • High-power optical fiber laser welding machine

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Embodiment Construction

[0013] The technical solutions of the present invention will be further specifically described below through examples.

[0014] In this embodiment, a high-power fiber laser welding machine includes a coupled double-clad fiber, a mechanical arm, and a pure fiber-coupled fiber laser, wherein the pure fiber-coupled fiber laser is obtained by a segmented excitation method, and the segmented excitation method is The segmental coupling number is determined according to the total laser output power, fusion splicing loss, outer cladding fiber loss, and single-segment excitation semiconductor power, that is, calculated by the equation:

[0015]

[0016] Among them, n is the segmental coupling number, k is the conversion coefficient, p is the total laser output power, δ r is the splice loss, δ w is the outer cladding fiber loss, p b is the single-segment excitation semiconductor power, η gg is the light efficiency.

[0017] As a specific example, the conversion coefficient k is s...

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Abstract

The invention relates to the technical field of welding equipment, and particularly relates to a high-power optical fiber laser welding machine. The purpose of the high-power optical fiber laser welding machine is to reduce the heating effect of a coupling node, increase the output power, and definitely segment the coupling number and the best coupling distance in the optical fiber laser welding process. The high-power optical fiber laser welding machine is characterized in that the laser welding machine comprises a coupled doubly-clad optical fiber, a mechanical arm and a pure optical-fiber coupled optical fiber laser, and the pure optical-fiber coupled optical fiber laser is obtained through a segmented encouraging mode. The segmented encouraging mode determines the segmented coupling number according to the output power of a total laser, welding loss, optical fiber loss of an outsourcing layer and single-segment incentive semiconductor power. The light-light conversion rate and the output power are increased, and the heating effect and nonlinear effect and mode worsening caused by strong laser single points are avoided. The high-power optical fiber laser welding machine is suitable for cooling of a pumping source, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of welding equipment, in particular to a high-power fiber laser welding machine. Background technique [0002] Laser welding machine is a modern welding method. Laser welding is characterized by small deformation of the welded workpiece, high welding depth / width ratio, and small heat-affected zone, so the welding quality is higher than traditional welding methods. They are used more and more in industry more extensive. The laser welding machine also has the advantages of not being affected by the magnetic field, not limited to conductive materials, not requiring vacuum conditions, and not generating X-rays during the welding process. The combination of laser and computer control controls the welding process better and more accurately, ensuring the quality of welding. According to different welding objects and requirements, technical solutions such as weld tracking, defect monitoring, and weld quality monito...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/21H01S3/09
Inventor 金辉
Owner 杭州奥克光电设备有限公司
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