Method and device for pulse vibration electrochemical grinding of end face of rotary part

Abstract

The invention discloses a pulse vibration electrochemical grinding processing method and device for the end face of a rotary part, and belongs to the technical field of electrochemical-mechanical composite processing. Including electric spindle, pressure plate, positioning sleeve, rotary parts, rotary table, tool cathode, connecting rod, low-frequency vibration device, rotating mandrel, compression spring, cylindrical pin, mobile bushing, abrasive tool, which is characterized by the use of pulse power supply The output and tool vibration synchronization method regulates the micro-dissolution process of rotating parts, which is conducive to improving the localization of electrochemical dissolution and promoting the optimal matching of electrochemical dissolution and mechanical grinding. The independent control of the chemical grinding process improves the surface accuracy and surface quality of the end face of the rotating parts.

Description

technical field [0001] The invention relates to a pulse vibration electrochemical grinding processing method and device for the end face of a rotary part, and belongs to the technical field of electrochemical-mechanical composite processing. Background technique [0002] A mechanical seal ring is a typical rotating part. In order to meet the requirements of mechanical seals in harsh working conditions such as high pressure, high speed, corrosive medium and solid particle medium, not only the material performance requirements of the seal ring are more stringent, but also the processing performance of the end face of the seal ring is put forward. Cemented carbide has the characteristics of high hardness, wear resistance and corrosion resistance, and is a common material for the hard ring of mechanical seal friction pair. [0003] The surface finishing of the cemented carbide sealing ring mostly adopts mechanical grinding, and the flatness and surface roughness after processin...

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Problems solved by technology

[0005] However, affected by multiple factors such as multi-component characteristics of cemented carbide materials, electrode potential difference, and tool structure and abrasive grain distribution, the removal process of cemented carbide electrochemical grinding materials is an extremely complicated dynamic process. Electrochemical dissolution and mechanical It is still difficult to optimize the matching of grinding action, and it is easy to produce excessive dissolution or obvious abrasive cutting marks

[0006] In addition, in the existing planar electrochemical grinding process, the grinding tool and the cathode are usually combined to form a composite tool. The structure of the composite tool is relatively complex, the manufacture is difficult, and the process adjustment is also relatively difficult.

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