Laser cladding lateral powder feed processing head

Abstract

The invention provides a laser cladding lateral powder feed processing head, a laser tube, a powder spray nozzle and a powder spray nozzle clamping mechanism, wherein the powder spray nozzle clamping mechanism includes a support arm and a parallel linkage mechanism; the support arm takes the shape of a square without the left edge; the support arm is mounted on the laser tube in a supported manner; the parallel linkage mechanism includes a driving link, an upper driven link, a linkage link, a clamp link and a driving unit; the powder spray nozzle is mounted on the clamp link; and further, three points, namely the focus point of focused laser beam emitted by the laser tube, the convergent point of powder beams sprayed out by the powder spray nozzle, and a first top point coincide. The laser cladding lateral powder feed processing head enables light beam energy to be distributed uniformly on the surface of a workpiece, improves the powder utilization rate and formation quality of laser cladding, simplifies control technical requirements for coordinate operation of a worktable, improves simplicity and flexibility degrees of process parameter adjustment, and further provides an incidence angle for automatically adjusting the powder beams to enter a laser cladding bath according to the practical situation during the processing, thereby realizing feasibility of better laser cladding formation quality.

Description

technical field [0001] The invention belongs to the field of laser processing equipment, in particular to a laser cladding side powder feeding processing head. Background technique [0002] Laser processing technology is a general term for a class of advanced processing methods that use high-energy-density laser beams to process materials in a non-contact manner. Laser cladding is one of the more actively developed laser processing technologies. Its principle is to pre-set metal powder on the surface of the substrate by powder spreading or powder feeding, and to focus the high-energy laser beam on the surface of the substrate. The metal powder on the surface of the substrate, the metal powder at the focal point and the thin layer on the surface of the substrate are melted to form a molten pool of a certain shape and size. When the focus of the laser beam moves at a certain speed according to a predetermined trajectory, the molten pool after the laser beam moves away Rapid s...

AI Technical Summary

Problems solved by technology

In engineering applications, the worktable must be used to drive the workpiece so that when the angle between the focused laser beam emitted by the lateral laser tube and the focused powder beam emitted by the vertical powder nozzle is adjusted, the converging point (also the focus of the laser beam) is relatively processed. The height position of the workpiece surface remains unchanged, and the horizontal position moves according to the predetermined programmed trajectory, which requires the three-dimensional movement of the worktable to be coordinated with the rotational movement of the swingable lateral laser tube driven by the worm gear transmission mechanism. From the perspective of

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