Ultrasonic rolling technique

Abstract

The invention provides an ultrasonic rolling technique. The ultrasonic rolling technique comprises step as follows: an ultrasonic rolling processing device adaptive to a complicated surface is provided and comprises a casing assembly, a hydraulic assembly and an ultrasonic assembly, wherein the ultrasonic assembly is fixed in the casing assembly and connected with the hydraulic assembly, the ultrasonic assembly comprises a transducer, an amplitude-change pole and a tool head, the transducer is connected with an ultrasonic generator, two edge curves of a radial section of the amplitude-change pole are bezier curves, a first end of the amplitude-change pole is connected to a first end of the transducer, and the tool head is detachably connected to a second end of the amplitude-change pole; the ultrasonic rolling processing device is clamped to a machine tool, and the tool head is arranged in the position in slight contact with a to-be-processed surface of a workpiece; the hydraulic assembly is adjusted to output 100-2,000 N static pressure; the ultrasonic assembly is adjusted, and axial amplitude of an output end of the amplitude-change pole is enabled to be 5-30 mu m; meanwhile, a motion trail of the machine tool is set for ultrasonic rolling processing. The ultrasonic rolling technique has the advantages of high efficiency, low energy loss and the like.

Description

technical field [0001] The invention relates to the field of metal surface treatment devices, in particular to an ultrasonic rolling process method. Background technique [0002] Surface rolling strengthening is a better surface strengthening method, which can prepare fine nano-layers on the surface of parts and improve the performance coefficient of materials in all aspects; it can also be used on the surface of damaged workpieces, such as aircraft engine blades. Such parts put into use are repaired twice to extend the service period and obtain nano-scale surface finish at the same time, which is helpful for reducing the surface roughness of the parts, introducing residual compressive stress, and improving the corrosion resistance, wear resistance and fatigue resistance of the parts are of great significance. [0003] Ultrasonic rolling processing is a working method that combines ultrasonic impact energy and static load rolling, and is a more efficient processing method. ...

AI Technical Summary

Problems solved by technology

[0004] The existing ultrasonic rolling process generally has a small range, and its processing range cannot meet the strength requirements required for high-strength material experiments

Moreover, the head shell and the shell main body of the existing ultrasonic rolling processing device for fixing the head tool head are integrally formed or non-detachably fixedly connected. After a period of use, the head shell will wear out but cannot be replaced. , causing the tool head to loosen and can no longer be fixed; and the existing device after wear will affect the processing accuracy. If the same parameters are set and the surface of the same material is treated for a period of time, the results will be different.

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