Pulse vibration and electrochemical grinding machining method applied to rotary part end surfaces and device thereof

Abstract

The invention discloses a pulse vibration and electrochemical grinding machining method applied to rotary part end surfaces and a device thereof, and belongs to the technical field of electrochemical mechanical combined machining. The device comprises an electric spindle, a pressing plate, a positioning sleeve, a rotary part, a rotary worktable, a tool cathode, a connecting rod, a low-frequency vibration device, a rotary mandrel, a compression spring, a cylindrical pin, a movable shaft sleeve and a grinding tool, wherein the trace dissolution process of the rotary part is regulated and controlled by adopting a pulse power supply output and tool vibration synchronization method; the improvement of locality of electrochemical dissolution is facilitated; optimal matching of an electrochemical dissolution effect and a mechanical grinding effect is facilitated; the electrochemical dissolution effect and the mechanical grinding effect are separated from each other; independent control of the electrochemical grinding process is facilitated; and the surface precision and the surface quality of the end surface of the rotary part are improved.

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, belonging to the technical field of electrochemical-mechanical composite processing. Background technique [0002] A mechanical seal ring is a typical rotary part. In order to meet the mechanical seal requirements of harsh working conditions such as high pressure, high speed, corrosive medium and solid particle medium, not only the performance requirements of the sealing ring material are more stringent, but also higher requirements are placed on the processing performance of the sealing ring end face. Cemented carbide has the characteristics of high hardness, wear resistance and corrosion resistance, and is a common material for mechanical seal friction pair hard rings. [0003] The end surface finishing of cemented carbide sealing rings is mostly done by mechanical grinding. The flatness and surface roughness after proc...

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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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