Full-angle flexible needle type ultrasonic shot blasting device

Abstract

The invention discloses a full-angle flexible needle type ultrasonic shot blasting device. The full-angle flexible needle type ultrasonic shot blasting device is composed of an ultrasonic transducer,a shot blasting needle sleeve, a shot blasting needle and a suction device. The tail end of the shot blasting needle is adsorbed to the end face of the tail end of an amplitude-change pole of the transducer through suction force, and the shot blasting needle is popped out through ultrasonic vibration of the tail end of the amplitude-change pole. The shot blasting needle cannot be completely poppedout of the needle sleeve due to stop of the needle sleeve, and therefore the shot blasting needle can achieve constant reciprocating impacting between the amplitude-change pole of the ultrasonic transducer and a to-be-treated metal workpiece within a wide distance range, flexible contact between the shot blasting needle and the surface of the workpiece is achieved, the end of the shot blasting needle impacts on and is in contact with the surface of the to-be-treated metal workpiece only at the ultrasonic shot blasting moment, and the whole ultrasonic shot blasting device does not need to be in hard contact with the surface of the metal workpiece before shot blasting.

Description

technical field [0001] The invention relates to the technical field of metal surface ultrasonic shot peening, and more specifically relates to a full-angle flexible needle type ultrasonic shot peening equipment and its design method, which can be widely used in aerospace, marine engineering, automobile industry, petrochemical, bridge, etc. Surface strengthening of complex thin-walled metal parts in ships and other fields and stress relief and shape correction of metal welded parts, such as stress relief, shape correction, and surface strengthening of aircraft panels. Background technique [0002] Ultrasonic shot peening of metal surface is a new type of surface strengthening technology. This technology uses ultrasonic vibration mechanical energy to drive shot peening balls or shot peening needles to hit the metal surface at high speed, forming plastic deformation and residual compressive stress areas within a certain depth on the metal surface. It is an advanced shot peening...

AI Technical Summary

Problems solved by technology

The disadvantages of this ultrasonic impact treatment technology are: 1. It is difficult to effectively act on uneven metal surfaces or metal surfaces with steps, such as the surface of welds or the surface of shaft parts with steps, etc.

2. It is difficult to effectively act on the surface of metal parts with a large radius of curvature, such as the surface of LNG storage tanks, rocket liquid fuel storage tanks, and missile shell surfaces, etc.

3. When ultrasonic impact treatment of thin-walled workpieces, the applied pressure is likely to cause local deformation of the workpiece

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