A multi-degree-of-freedom powder feeding device

Abstract

The invention provides a multi-degree-of-freedom powder feeding device. The powder feeding device includes a powder holding funnel, a powder feeding shaft arranged at the lower end of the powder holding funnel, a rotating shaft adapted to the powder feeding shaft, and bearings arranged at both ends of the rotating shaft. The motor connected with the shaft coupling and the rotating shaft; the outside of the coupling is provided with a small housing, and the outside of the bearing is provided with a large housing; the lower end of the large housing is provided with a funnel, the powder guide pipe connected with the funnel, and the powder guide pipe connected with the There is a fastening ring between the powder feeding pipe, the powder guiding pipe and the powder feeding pipe; the powder feeding nozzle is arranged at the end of the powder feeding pipe; the universal joint is arranged on the fastening ring, and the laser output end connected with the universal joint . The invention solves the technical problems of inconvenient use and low precision of the existing device. The invention has the advantages of strong portability and adaptability, good precision, high utilization rate of powder and laser, and the like.

Description

technical field [0001] The invention belongs to the technical field of powder feeding in laser cladding, and in particular relates to a multi-degree-of-freedom powder feeding device. Background technique [0002] In current industrial applications, most powder feeders are pneumatic powder feeders, which rely on spraying out pressure gas to carry powder to the laser output end. This powder feeding principle brings about two problems. One is the precise control of the powder delivery speed. First, the control of the gas flow is difficult to achieve continuous adjustment due to technical limitations, which directly affects the continuous adjustability of the powder delivery speed. , In addition, pneumatic powder feeding is affected by many internal and external factors, and there is no stable and accurate corresponding relationship between gas flow and powder delivery speed, which also affects the accuracy of powder delivery speed; second, powder is easily blown away by gas, wh...

AI Technical Summary

Problems solved by technology

This powder feeding principle brings about two problems. One is the precise control of the powder delivery speed. First, the control of the gas flow is difficult to achieve continuous adjustment due to technical limitations, which directly affects the continuous adjustability of the powder delivery speed. , In addition, pneumatic powder feeding is affected by many internal and external factors, and there is no stable and accurate corresponding relationship between gas flow and powder delivery speed, which also affects the accuracy of powder delivery speed; second, powder is easily blown away by gas, which leads to Poor accumulative properties of powder when it just leaves the powder nozzle, which not only affects the quality of laser cladding, but also causes a lot of waste of powder

[0003] In addition, in current industrial applications, most powder feeding devices install the powder feeding nozzle in the laser output device. First, this leads to the fact that the powder feeding device cannot or is difficult to be transplanted to other laser output ends for laser cladding

Second, the design of installing the powder feeding nozzle in the laser output device makes the angle and spatial position of the powder sent out fixed, and cannot be processed flexibly with the various parameters of the laser output from the laser output end. Limitation of powder feeding freedom in powder feeding device design

Third, the design of installing the powder feeding nozzle in the laser output device is easy to block the powder feeding nozzle due to the sputtering of molten droplets, which affects the processing progress and effect

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