High-frequency pulse discharge assisted surface rolling strengthening processing device and method

Abstract

The invention discloses a high-frequency pulse discharge assisted surface rolling strengthening processing device. The high-frequency pulse discharge assisted surface rolling strengthening processing device is composed of a rolling mechanism, a force measuring mechanism and a pulse discharge mechanism; the rolling mechanism comprises a sleeve with a rolling rod, and a rolling wheel is arranged at the end of the rolling rod; a pressure sensor, a supporting plate and a spring of the force measuring mechanism are sequentially arranged at the rear end of the rolling rod in the sleeve and are fixed through an end cover; a pressure display instrument of the force measuring mechanism is connected with the pressure sensor through a data line; the pulse discharge mechanism is a high-frequency pulse power source connected with a work electrode; and a cooling nozzle is formed in one side of the rolling wheel. The invention further discloses a high-frequency pulse discharge assisted surface rolling strengthening processing method. On the basis of surface rolling processing, the high-frequency pulse discharge is introduced into the surface rolling processing process, and through combination of surface rolling and high-frequency pulse discharge, a strengthening layer which is good in performance and uniform in structure is obtained from the surface of a workpiece, and wear-resisting performance and anti-fatigue performance of a part are improved.

Description

technical field [0001] The invention belongs to the technical field of metal surface strengthening, and relates to a surface strengthening technology of shaft parts, in particular to a high-frequency pulse discharge-assisted surface rolling strengthening processing device and method. Background technique [0002] During the use of most shaft and rod parts, due to stress concentration, pitting, fretting wear and other damage phenomena on the surface of the parts, fatigue and severe wear of the parts often occur. Therefore, how to improve the wear resistance and fatigue resistance of metal materials is of great significance for improving the use accuracy and life of metal parts, so as to ensure that mechanical equipment can operate with safer and more reliable performance. [0003] In order to meet the above requirements, it is necessary to modify the surface of shafts and rods. As a surface modification method, surface rolling strengthening can improve the microhardness of t...

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Problems solved by technology

[0004] Aiming at the surface modification treatment problems existing in existing shafts and rods, the purpose of the present invention is to provide a high-frequency pulse discharge assisted surface rolling strengthening device and method with simple operation and strong applicability. The combination of pressure and high-frequency pulse discharge can obtain a strengthening layer with better performance and uniform structure.

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