Self-lubricating-type ultrasonic rolling device with micro-array structure on tool head

Abstract

The invention provides a self-lubricating-type ultrasonic rolling device with a micro-array structure on a tool head. According to the self-lubricating-type ultrasonic rolling device, the efficient transmission of ultrasonic amplitude and frequency between a rolling head and an amplitude variable rod can be realized, and ultrasonic deep rolling strengthening is carried out on a workpiece under a low friction state of the rolling head and the workpiece. The self-lubricating-type ultrasonic rolling device includes the assemblies such as a piezoelectric ceramic stack, the amplitude variable rod and various models of integrated micro-textured rolling heads. The rear end of the rolling head is processed into a screw thread to cooperate with the amplitude variable rod for integrated design, a micro-array structure is prefabricated at the front end part of the rolling head through laser, a self-lubricating material is embedded for polishing treatment, the sliding friction between the rollinghead and the workpiece during processing can be reduced, and a worn area of the rolling head is adhered to improve the tool service life and processing quality; and multiple models of the rolling heads are equipped, different models of the rolling heads can be selected according to difference of workpiece sizes, materials and processing requirements to achieve the best processing effects.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a self-lubricating ultrasonic rolling device with a micro-array structure on a tool head. Background technique [0002] Ultrasonic rolling processing technology is a new surface strengthening process that combines ultrasonic vibration shock and static load rolling. Under the combination of rolling force and ultrasonic impact, the surface of the workpiece produces plastic flow, the roughness is reduced, the grains are refined to form nanocrystals, and the distribution of residual stress on the surface of the workpiece is improved; thereby enhancing the mechanical properties of the workpiece and prolonging the fatigue life of the workpiece. It has the effect of enhancing the wear resistance and corrosion resistance of the workpiece, and is widely used in industrial production. [0003] The traditional solid-connected ultrasonic rolling device welds the rolling head...

AI Technical Summary

Problems solved by technology

However, the ultrasonic rolling device has a huge energy loss in the amplitude and frequency transmission process between the horn and the rolling head, and the impact effect of ultrasonic vibration on the surface of the workpiece is weakened. It can only finish the surface of the workpiece, and the residual stress layer The depth is shallow, unable to meet the production needs of some workpieces

[0005] Therefore, considering the shortcomings of the traditional solid-connected ultrasonic rolling device, such as the large wear of the rolling head and the small ultrasonic impact amplitude of the ultrasonic rolling device, how to propose an ultrasonic vibration impact effect that can reduce the wear of the rolling head and significantly reduce the wear and tear of the rolling head. It is of great practical significance to improve the service life of the ultrasonic rolling device

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