Photoelectricity cooperates pipeline inner wall polishing device and its working method

By integrating electrodes and light source modules onto a polishing fixture, and combining them with centering components and pipe diameter detectors, highly uniform photoelectric co-polishing of the inner wall of metal pipes with large aspect ratios and variable diameter structures is achieved. This solves the problems of passivation film inhibiting anodic dissolution, non-conductive particle residue, and uneven current density, resulting in a flat and smooth inner wall surface.

CN122406352APending Publication Date: 2026-07-17SHANDONG MACHINERY DESIGN INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG MACHINERY DESIGN INST
Filing Date
2026-06-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve highly uniform photoelectric co-polishing of the inner walls of metal pipes with large aspect ratios and variable diameter structures. Issues include passivation film inhibiting anodic dissolution, non-conductive particle residue, uneven current density distribution, and tool marks.

Method used

A photoelectric co-processing pipe inner wall polishing device is adopted. By circumferentially distributing electrodes and light source modules in the polishing fixture, combined with centering components and pipe diameter detectors, a uniform sweep and real-time centering of the photoelectric composite energy field is achieved, ensuring uniform current density and seamless tool mark processing.

Benefits of technology

Achieving highly uniform photoelectric co-polishing of the inner wall of variable diameter pipes solves the problems of passivation film inhibition and dissolution, non-conductive particle residue, and uneven current density, resulting in a flat and smooth inner wall surface.

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Abstract

The application discloses a kind of photoelectricity synergic pipeline inner wall polishing device and working method thereof, belong to pipeline precision machining technical field, including electrolyte circulating mechanism, pipeline polishing mechanism and control system, electrolyte circulating mechanism is located at the both ends of pipeline, pipeline polishing mechanism is located in the inside of pipeline, along the direction of travel sequentially be equipped with polishing assembly, centering assembly and travel assembly, polishing assembly includes rotary drive unit and its driven polishing fixture, polishing fixture side is equipped with multiple polishing modules, each group contains electrode and light source, light source light emitting surface is towards the inner wall of pipeline, its irradiation area and electrochemical processing area of electrode at least partially overlap, polishing fixture front end is equipped with pipe diameter detector, control system is connected with electrolytic power supply, light source, rotary drive unit, centering assembly, travel assembly and pipe diameter detector communication connection.The application realizes the high uniformity polishing of variable-diameter pipeline by optimizing photoelectric field space coupling structure, introducing dynamic centering assembly and spiral overlapping trajectory control.
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