Powder feeding type laser 3D printing optical fiber powder feeding head

Abstract

The invention belongs to the field of powder feeding type laser 3D printing and particularly relates to a powder feeding type laser 3D printing optical fiber powder feeding head. The powder feeding type laser 3D printing optical fiber powder feeding head comprises a window protecting system, a telescopic sleeve, a centering device, a protecting gas conveying segment, a connecting sleeve and a powder spraying nozzle which are sequentially and coaxially connected; the connecting sleeve is provided with a dual-layer cooling structure; a laser beam sequentially penetrates center holes of the window protecting system, the telescopic sleeve, the centering device, the protecting gas conveying segment and the connecting sleeve, and is projected onto a machining face; and the powder spraying nozzle sprays powder flow into the light beam from the periphery, and powder is fast fused so that forming machining can be achieved. The powder feeding type laser 3D printing optical fiber powder feeding head has the beneficial effects of being high in powder feeding precision, capable of bearing high power long time work, resistant to oxidization and the like.

Description

technical field [0001] The invention belongs to the technical field of powder feeding type laser 3D printing, in particular to a powder feeding type laser 3D printing optical fiber powder feeding head. technical background [0002] 3D printing technology, also known as Additive Manufacturing (AM) technology, is a multi-disciplinary process involving physics, chemistry, materials science and engineering, computer science and technology, control science and engineering, mechanical engineering, biomedicine and engineering. Cutting-edge advanced manufacturing technology at the intersection of fields. Powder-feeding laser 3D printing technology is a new advanced manufacturing technology developed by the combination of rapid prototyping technology and synchronous feeding laser cladding technology. The raw materials are simultaneously fed into the molten pool to form a new metal layer that is metallurgically combined with the base metal and has a very low dilution rate. During the...

AI Technical Summary

Problems solved by technology

But at present, the commonly used powder feeders have problems such as low powder feeding accuracy, low powder utilization rate, easy clogging, and inability to withstand high power.

[0004] A set of stable and practical powder feeding head is the key to determine the forming accuracy and forming efficiency of 3D printing. Currently, the mainstream powder feeding heads in the market have many deficiencies in powder feeding accuracy and high power capacity. In actual processing, it can stably withstand 3000W The fiber laser has fewer powder feeding heads, and there are large deficiencies in powder feeding accuracy and powder jet stiffness

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