Rectangular homogenized light spot laser cladding head

Abstract

The invention discloses a rectangular homogenized light spot laser cladding head. The laser cladding head comprises a light guide seat with a laser incidence channel, a collimating lens set, a first micro lens array, a second micro lens array, a first cylindrical focusing lens, a second cylindrical focusing lens, a protective lens and a cladding machining head, wherein the collimating lens set, the first micro lens array, the second micro lens array, the first cylindrical focusing lens, the second cylindrical focusing lens and the protective lens are sequentially arranged along the laser incidence channel from back to front, and the cladding machining head is arranged at the far end of the light guide seat. The first micro lens array comprises a plurality of first micro lenses arranged inan array manner in the first direction. The second micro lens array comprises a plurality of second micro lenses arranged in an array manner in the second direction. The first cylindrical focusing lens and the second cylindrical focusing lens are arranged in the orthogonal direction. The laser cladding head is simple in structure, the cladding efficiency can be obviously improved, meanwhile, the cladding flatness is greatly improved, and the laser cladding head can be widely used for laser cladding machining of the outer surfaces of various product components.

Description

technical field [0001] The invention relates to the field of laser cladding, in particular to a laser cladding head with a rectangular uniform spot. Background technique [0002] In the prior art, the rectangular spot shape is usually formed by using a straight-line strip rectangular spot integrator. The basic principle of this integrator is to reflect the input spot in segments and obtain output spots of the same position and size on the working surface for superimposition. So as to achieve the effect of homogenization and shaping. For this kind of segmented linear strip rectangular spot integrator, due to the plane reflection, the output spot size is approximately equal to the input spot size divided by the number of partitions, so it is impossible to obtain a large spot. In addition, because the incident laser is a Gaussian spot, when the number of partitions is small, The obtained rectangular spot is not a rectangular homogenized spot, which will cause poor flatness o...

AI Technical Summary

Problems solved by technology

For this kind of segmented linear strip rectangular spot integrator, due to the plane reflection, the output spot size is approximately equal to the input spot size divided by the number of partitions, so it is impossible to obtain a large spot. In addition, because the incident laser is a Gaussian spot, when the number of partitions is small, The obtained rectangular spot is not a rectangular homogenized spot, which will cause poor flatness of the laser cladding layer when used in laser cladding processing

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