L-shaped laser cladding head and laser cladding equipment

Abstract

The invention relates to an L-shaped laser cladding head. According to the L-shaped laser cladding head, the distance between a collimator set and a reflective lens of the L-shaped laser cladding headis less than 200 mm, the length of the laser cladding head is greatly shortened, the deformation resistant ability is strong, a focus is not prone to shaking, the processing effect is good, and the failure rate is low. The invention further relates to laser cladding equipment, the laser cladding equipment comprises the L-shaped laser cladding head, a laser device, a powder feeder, a machine toolbody, a C shaft device, a moving vertical column and an electrical control cabinet, wherein the C shaft device is fixedly arranged at one end of the machine tool body, a C shaft is a chuck clamping rotary shaft, the moving vertical column and the machine tool body form a pair of moving pairs along a Z axis, the Z axis is a horizontal axis and is parallel to the axis of the C shaft, a moving support and the moving vertical column form a pair of moving pairs along a Y axis, the Y axis is a vertical axis, one end of an extension rod is fixed to the moving support, and the L-shaped laser claddinghead is fixed to the hanging-out end portion of the extension rod. By means of the L-shaped laser cladding head and the laser cladding equipment, laser cladding processing can be performed on both aninner hole and an outer wall, the cladding processing on the inner hole and the outer wall of the same processing piece only needs to be clamped once, and the L-shaped laser cladding head and the laser cladding equipment are high in efficiency.

Description

technical field [0001] The invention relates to the technical field of laser cladding equipment, in particular to an L-shaped laser cladding head and a laser cladding equipment. Background technique [0002] Laser cladding, also known as laser cladding or laser cladding, is a new surface modification technology, by adding cladding materials on the surface of the substrate, and using a high-energy-density laser beam to melt it together with the thin layer on the surface of the substrate The method of coagulation forms a metallurgically bonded cladding layer on the surface of the base layer. This technology has obvious advantages in the repair and surface strengthening of large and medium-sized precious parts. [0003] The laser cladding heads used for laser cladding of the inner hole of the workpiece are all L-shaped laser cladding heads. The L-shaped laser cladding head includes a straight lens group, a reflective lens and a focusing lens group. The collimating lens group is...

AI Technical Summary

Problems solved by technology

[0004] In the L-shaped laser cladding head in the prior art, the distance between the collimating lens group and the reflective lens is too far, generally above 400mm, and the laser cladding head is relatively slender and easily deformed, which easily leads to laser focus The position changes, which may lead to the following disadvantages: 1) The effect of laser cladding is poor; 2) Once the focus is on the copper nozzle, the copper nozzle will be burned out, and the copper nozzle needs to be replaced frequently during the processing, not only The amount of consumables is large, and it affects the processing efficiency; 3) It is easy to cause the divergent laser between the collimating mirror group and the reflective mirror to directly irradiate the side wall of the laser cladding head, which accelerates the thermal deformation of the laser cladding head

[0005] Most of the existing laser cladding equipment on the market is modified on the basis of lathes or other machine tools. The Z-axis guide rail is installed on an external base or bracket, and it is difficult to guarantee the movement accuracy of the Z-axis and the parallelism with the main shaft; and the current market There is no equipment in the world that can perform laser cladding on both the inner hole and the outer wall. Basically, laser cladding can only be performed on the inner hole, or only on the outer wall. A part needs laser cladding for both the inner hole and the outer wall, so two kinds of equipment have to be replaced, and the clamping is repeated, the process is complicated and the processing efficiency is low; the existing laser cladding equipment for the inner hole The L-shaped laser cladding head of the prior art is used in the machine, which greatly limits the laser cladding stroke of the inner hole. At present, the laser cladding stroke of the inner hole on the market is generally below 1.5m.

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