A laser coaxial wire feeding metal parts forming device with variable wire feeding angle

Abstract

The invention relates to a laser coaxial wire feeding metal part forming device with a variable wire feeding angle, which belongs to the technical field of laser near-net shaping. The device includes a focusing mirror, a laser generator, a wire feeding system, a shielding gas system, and a light wire control system. The wire feeding system includes a wire feeding machine, a wire feeding pipeline and a nozzle with a variable wire feeding angle. The variable wire feeding angle nozzle is connected, the laser generator and the wire feeding system are electrically connected to the optical fiber control system respectively, the outer wall of the middle part of the laser nozzle is fixed with a wire feeding pipeline bearing plate, and the top of the laser nozzle is vertically provided with a slide rail, the slide rail The upper slide is equipped with a ring slider, the side end of the ring slider is hinged with a connecting rod, the other end of the connecting rod is hinged with the top of the wire feeding pipe, and the middle part of the wire feeding pipe is set on the wire feeding pipe bearing plate through a rotating connector. At the side end, the shielding gas system is fixed on the outside of the variable wire feeding angle nozzle at the end of the wire feeding pipeline.

Description

technical field [0001] The invention relates to a laser coaxial wire feeding metal part forming device with a variable wire feeding angle, which belongs to the technical field of laser near-net shaping. Background technique [0002] In laser cladding, the laser and metal cladding materials are supplied to the processing position synchronously, and the metal cladding materials are continuously and uniformly fed into the focused laser spot, and the key point is to ensure the precise coupling of the light powder. [0003] The traditional laser powder feeding cladding process is relatively mature, but there are inevitable problems of powder divergence and lag. In order to ensure the continuity of cladding, only part of the metal powder sprayed at high speed participates in the forming, resulting in low utilization of powder materials , and the dust in the working process has brought great harm to the environment; in addition, this technology has higher requirements on the partic...

AI Technical Summary

Problems solved by technology

Although this method solves the problem of the anisotropy of the melt channel shape caused by the different directions of laser cladding in the optical lateral wire feeding technology, and ensures the consistency of all directions, but due to the difference between the wire feeding nozzle and the laser beam Coaxiality cannot be guaranteed, which may easily lead to problems such as insufficient optical material coupling

[0006] However, the internal optical wire feeding cladding technology has a complex internal optical path, many optical problems, and is difficult to completely control. At the same time, the complexity of the optical path also causes the laser to be reflected and absorbed by the inner wall of the nozzle for many times, and its laser utilization rate is low.

Images