An electrolytic machining device for synchronously realizing the microstructure of the inner surface of a cylindrical workpiece and the outer surface of a cylindrical workpiece

Abstract

The invention discloses an electrolytic processing device for synchronously realizing the microstructure of the inner surface of a cylindrical workpiece and the outer surface of a cylindrical workpiece, belonging to the field of electrolytic processing. The device includes cylindrical workpiece Ⅰ, workpiece Ⅱ with cylindrical outer surface, roller cathode, cathode mask, auxiliary roller, cage assembly, conductive bearing, electrically insulating bearing, idler roller Ⅰ, idler roller Ⅱ, conductive shaft, electrolytic liquid nozzle and power supply. The workpiece Ⅰ is placed on the supporting roller Ⅰ and the supporting roller Ⅱ. The workpiece Ⅱ is installed inside the workpiece Ⅰ and is pressed tightly on the cathode of the roller and the auxiliary roller under the action of external force. The supporting roller drives the workpiece Ⅰ to rotate at a constant speed. The cathode mask and The auxiliary rollers are always in close contact with the workpieces I and II, and continuously process the surface of the workpiece while transmitting continuous power. The invention can synchronously realize the microstructure processing of the inner surface of the cylindrical workpiece and the outer surface of the cylindrical workpiece at one time, and the processing process is stable and efficient, the processing quality is good, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of electrolytic machining, in particular to an electrolytic machining device for synchronously realizing the microstructure of the inner surface of a cylindrical workpiece and the outer surface of the cylindrical workpiece. Background technique [0002] Transmission products are commonly used in a variety of rotary joints. Plain bearings are one of the preferred rotary joints. Research and application show that adding an optimally designed microstructure on the surface of the rotating pair component can effectively improve the friction characteristics and reduce the friction coefficient, thereby reducing wear and improving service life. [0003] At present, the main methods for preparing metal surface microstructures are: high-energy beam (such as laser beam, electron beam, etc.) processing, micromachining, chemical etching, electrochemical etching and electrodeposition processing. Among them, mask electro...

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Problems solved by technology

This method uses photolithography to pattern the outer surface of the cylinder or attach a flexible mask to the processing surface, and uses the sleeve as the cathode of the tool for electrolytic processing to prepare the microstructure of the outer surface of the cylinder, but it has disadvantages: The film engraving process is cumbersome, the process cost is high, and the quality of the film is difficult to guarantee

For rotary parts, the biggest difficulty in surface microstructure processing is the preparation of high-quality and high-precision masks on curved surfaces, especially the electrolytic processing of anode masks, which increases the process cost.

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