Laser coaxial powder feeding nozzle adjustable in powder convergence point and with conical surface and lever-type structure

Abstract

The invention relates to a laser coaxial powder feeding nozzle adjustable in powder convergence point and with a conical surface and a lever-type structure. The laser coaxial powder feeding nozzle is characterized in that powder feeding pipes are mounted around a cladding head through an angle regulating device capable of regulating the included angle between the powder feeding pipes and the cladding head; the angle regulating device comprises a sleeve; the cross sectional area of the sleeve in the vertical direction is gradually decreased from top to bottom; a driving device is arranged on one side of the sleeve; a guide device is arranged between the sleeve and the cladding head; the powder feeding pipes are positioned outside the sleeve; one end, close to an inlet, of each of the powder feeding pipes is arranged on the outer wall surface of the sleeve in a vertical sliding manner along the outer wall surface of the sleeve; one end, close to an outlet, of each of the powder feeding pipes is hinged to the cladding head; the middle of each of the powder feeding pipes is connected with the cladding head through a spring; a central controller is connected with the driving device. According to the laser coaxial powder feeding nozzle adjustable in the powder convergence point and with the conical surface and the lever-type structure, when the laser defocusing amount is changed, the powder convergence point is adjusted dynamically in real time, so that the powder convergence point can fall on the surface of a processing part all the time, a cladding layer with high precision, high quality and good performance is achieved, and a cladding track with a changeable width is realized.

Description

technical field [0001] The invention relates to a laser coaxial powder feeding nozzle with an adjustable converging point of powder with a conical surface lever type structure. Background technique [0002] With the continuous development of laser cladding technology and the increase of industrial use, the geometry of processed parts is becoming more and more complex. During processing, the width of the cladding track often needs to be changed. During the processing, by directly moving the laser cladding head in the vertical direction, the position of the focus of the laser beam is changed, thereby changing the size of the spot on the surface of the workpiece, and changing the width of the cladding track online. Ordinary laser coaxial powder feeding nozzles cannot adjust the position of the powder converging point online in real time according to the position of the laser beam focus. , Powder aggregation and powder utilization are not high, which undoubtedly limits the pop...

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Problems solved by technology

Ordinary laser coaxial powder feeding nozzles cannot adjust the position of the powder converging point online in real time according to the position of the laser beam focus. , Powder aggregati...

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