A process method for aligning shafts using laser cladding technology

Abstract

A technological method for straightening a shaft by a laser cladding technology includes 1), detecting a bent portion and a bent direction of a shaft part; 2), machining a cladding groove at a high point of the bent position of the shaft or a machinable high point of the shaft; (3), straightening the cladding groove by means of laser cladding; 4), removing residual stress on the surface which is subjected to laser cladding after the shaft part is thoroughly cooled; 5), detecting a jumping value of the shaft again to determine whether the shaft needs to be subjected to laser cladding again or not; and 6), machining and polishing the surface which is subjected to laser cladding to guarantee the precision of the shaft after the shaft is repaired. The technological method has the advantages that contact machining is omitted, abrasion of tools is prevented, laser beams can be guided and focused easily and are high in energy density, the machining speed is high, a heat affected zone is small, follow-up machining workload is low, the method can be used with a numerical control system easily to realize automation, and particularly, the shortcoming that deformation of a shaft cannot be precisely controlled by means of changing technological parameters to straighten the shaft by laser in the prior art is overcome.

Description

technical field [0001] The invention relates to a shaft calibration method, in particular to a shaft calibration process using laser cladding technology. Background technique [0002] Shaft parts and shafting components are important components of mechanical devices, generally as components that transmit force, and usually bear bending loads, torsional loads or combined bending and torsion loads. There are three main reasons for the bending of the shaft. One is the cumulative bending of the shaft after long-term use, and the shaft runout value is 0.03-0.05mm. Compressive stress is generated due to the limitation of the lower temperature part. If the compressive stress is greater than the yield limit at this temperature, permanent deformation occurs, and the metal in the heated part is compressed and shortened. When it is completely cooled, the axis bends and deforms in the opposite direction. , the friction scar is on the concave side of the shaft, forming a permanent bendi...

AI Technical Summary

Problems solved by technology

In the straightening process of heating method and percussion method, the straightening process is difficult to control and cannot be quantified. The straightening work largely depends on the experience of the workers. At the same time, flame heating will enlarge the heat-affected zone and affect the surface of the parts. organizational performance

The use of pressure straightening and bending requires manual inspection, and the manual setting of the bending amount is not accurate enough and the efficiency is low. The straightening accuracy is determined entirely by the operator's experience.

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