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High-precision and high-stability coaxial powder feeding nozzle device

A high-stability, coaxial powder feeding technology, applied in the direction of improving energy efficiency, process efficiency, additive manufacturing, etc., can solve the problems of low workpiece accuracy, difficult workpiece, complicated processing, etc., to improve processing stability. , The effect of improving powder utilization and improving processing efficiency

Pending Publication Date: 2021-11-09
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic research on 3D printing equipment is developing rapidly, and its application involves aerospace, automobile, biomedical, construction and other fields. However, the current 3D printed products are slow in the processing process, the workpiece accuracy is not very high, and the work is stable. Poor performance, and it is difficult to process workpieces with complex shapes
Product quality problems have greatly increased the limitations of the application of 3D printing technology in various fields

Method used

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  • High-precision and high-stability coaxial powder feeding nozzle device
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  • High-precision and high-stability coaxial powder feeding nozzle device

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the cooperation relationship and the effect of parts and components of the present invention are described:

[0015] Such as figure 1 , Figure 4 As shown: the connecting cylinder 2 is connected to the powder cylinder 4 through a telescopic sleeve; the powder cylinder 4 is threadedly connected to the protective gas cylinder 5; the inner cone 7, the middle cone 8 and the outer cone 9 are respectively connected to the connecting cylinder 2 and the powder cylinder 4 and the threaded connection between the protective gas cylinder 5.

[0016] Such as figure 1 , Figure 4 , Figure 5 As shown: a central laser tube 10 and eight outer ring laser tubes 11 are respectively connected to the connecting cylinder 2 and the inner cone 7 at the lower end, and the upper end is connected to the laser; the lower end of the six powder feeding holes 3 is connected to the nozzle, and the upper end is Connect the powder feeding device, the ...

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Abstract

The invention provides a high-precision and high-stability coaxial powder feeding nozzle device. The device comprises a laser part, a sensor part, an adjustable gap structure part and a cooling protection part. The device is characterized in that a plurality of laser beams are controlled and selected, and the sensor part and an adjustable structure cooperate and are responsible for the stability of the device. According to the basic technical scheme, the number of the laser beams is controlled to meet the requirements of workpieces with different dimensional accuracy degrees. By means of the cooperation of processing position information measured by a sensor and the adjustable gap structure, the powder focus concentration and the diameter are stabilized, and therefore the high-precision and high-stability coaxial powder feeding nozzle device is provided for 3D printing.

Description

technical field [0001] The invention is used in the field of 3D printing and mechanical structure design, and relates to a 3D printing coaxial powder feeding nozzle device for processing workpieces requiring high precision and high stability. Specifically, it refers to adjusting the powder spray nozzle through sensor feedback information The gap, the amount of powder injection and the number of laser beams are controlled to improve the accuracy and processing stability of the workpiece. At the same time, through the large-area ring water cooling method, the nozzle can be cooled in a timely and efficient manner, reducing the effect of the cladding molten pool and laser heat radiation on the nozzle, and prolonging the life of the nozzle. Therefore, a coaxial powder feeding nozzle device with high processing precision and high stability is provided for 3D printing. Background technique [0002] At present, domestic research on 3D printing equipment is developing rapidly, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F12/53B22F10/25B33Y30/00
CPCB22F12/53B22F10/25B33Y30/00Y02P10/25
Inventor 张元陈瑶
Owner HARBIN UNIV OF SCI & TECH