Coaxial powder feeding sprayer capable of automatically adjusting light spots and powder feeding positions

Abstract

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...

AI Technical Summary

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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