Coaxial powder feeding nozzle with automatic adjustment of light spot and powder feeding position
An automatic adjustment, coaxial powder feeding technology, applied in the direction of metal material coating process, coating, etc., can solve the problems affecting the surface quality of processed parts, reducing processing efficiency, structural size differences, etc., to ensure convergence and stability. , Improve utilization, facilitate maintenance and replacement
Active Publication Date: 2018-09-14
CHINA UNIV OF MINING & TECH
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Problems solved by technology
One of the biggest advantages of laser cladding technology is that it can directly manufacture parts with complex structures, but it faces many difficult problems in actual operation
There are many features on parts with complex structures, and there are differences in structural dimensions
If a smaller spot is selected for processing, the processing accuracy can be guaranteed, but the processing efficiency is reduced; the step effect in laser cladding seriously affects the surface quality of the processed parts. This adverse effect is in the cladding of complex curved surfaces more prominent when
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[0033] The present invention will be further described below in conjunction with accompanying drawing.
[0034] It should be noted that the relative arrangement, numerical values, etc. of components set forth in the present embodiment are not limited to the scope of the present invention unless specifically stated otherwise. As preferably, in this specific embodiment, the powder spray pipe 4.17 quantity is selected as four, and its special quantity is all within the scope of protection of the present invention as long as it can form a complete annular powder curtain in the powder spray process, and the quantity is not limited. Specific restrictions; the number of the corresponding mounting ears 5.2 and the four-bar linkage mechanism is designed to be four, corresponding to the number of powder spraying pipes 4.17; preferably, the number of air inlets 5.1 for the shielding gas is designed to be three.
[0035] like figure 1As shown, a coaxial powder feeding nozzle that can aut...
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The invention discloses a coaxial powder feeding sprayer capable of automatically adjusting light spots and powder feeding positions. The sprayer can be used for the field of laser cladding and mainly structurally comprises a connecting cylinder, a sprayer body, a variable light path system, an adjustable powder feeding position system and a nozzle, a cooling water jacket and a mounting lug of a four-linkage mechanism are arranged outside the nozzle, and an internal protective gas inlet is formed in the upper end of the nozzle. All movable portions of the sprayer are driven by a servo motor, and rotary motion is transformed into linear motion of a slider through a ball screw. According to the coaxial powder feeding sprayer, the diameter of the light spots and the powder feeding positions can be continuously changed, positions of the light spots can be adjusted, so that the light spots are overlapped with powder flow converging focuses, the sprayer effectively solves the contradiction between cladding efficiency and cladding accuracy in laser cladding, and laser cladding process of complicated curved surfaces can be achieved.
Description
technical field [0001] The invention belongs to the field of laser processing applications, relates to laser three-dimensional forming and laser cladding, in particular to a coaxial powder feeding spray head capable of automatically adjusting light spots and powder feeding positions in laser cladding. Background technique [0002] Laser cladding technology refers to the use of high-energy laser beams to melt metal powder and deposit it on the surface of the substrate to form a metal coating that is metallurgically bonded to the substrate. This technology can be applied to strengthen the surface of the part, repair the damaged area of the part, or directly accumulate and manufacture the part entity with complex structure. One of the biggest advantages of laser cladding technology is that it can directly manufacture parts with complex structures, but it faces many difficult problems in actual operation. There are many features on parts with complex structures, and there are...
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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 郝敬宾马国帅刘昊李中凯李聪聪梁超
Owner CHINA UNIV OF MINING & TECH