Method for optimizing magnetic needle lapping process based on surface roughness visual quantitative evaluation

CN117300739BActive Publication Date: 2026-04-28BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Filing Date
2023-09-12
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively treat the surface roughness of parts to meet relevant requirements while ensuring the structural integrity of the workpiece. In particular, traditional methods suffer from low efficiency, high pollution, and insufficient applicability in the grinding process of precision and irregularly shaped workpieces.

Method used

A magnetic needle grinding process based on the visualization and quantitative assessment of surface roughness is adopted. By designing a magnetic needle grinding process matrix and changing process parameters such as magnetic needle length, diameter and magnetic pole rotation speed, combined with ultra-depth-of-field optical imaging technology, a quantitative mapping relationship between process parameters and surface roughness is constructed, and the grinding process is optimized to meet the surface roughness requirements of different workpieces.

Benefits of technology

It enables efficient, pollution-free, and low-cost surface grinding of precision and irregularly shaped workpieces, applicable to a variety of mechanical parts, improving the reliability and service life of parts without affecting workpiece accuracy.

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Abstract

The application provides a magnetic needle polishing process optimization method based on surface roughness visualization quantitative evaluation, and realizes the following steps: (1) a magnetic needle polishing process matrix is designed, and the changed process parameters include the length and diameter of the magnetic needle, the rotating speed of the magnetic pole, the volume density of the polishing liquid particles, etc.; (2) according to the structure characteristics of the object to be polished, a characteristic simulation piece for polishing is designed, such as a local plane simulation piece, an irregular surface simulation piece and the like; (3) for various characteristic simulation pieces, a magnetic needle polishing is carried out by using various process parameter combinations in the process matrix; (4) for various characteristic simulation pieces, surface topography observation is carried out by using an ultra-depth optical imaging technology, and quantitative parameters such as surface roughness are obtained; (5) for various characteristic simulation pieces, a quantitative mapping relationship between the process parameters and the surface roughness is constructed; (6) for a specific object to be polished, the process parameters capable of covering various structure characteristics are determined based on the constructed quantitative mapping relationship.
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Citation Information

Patent Citations

  • Workpiece surface magnetic particle polishing method

    CN114734306A

  • Process for processing a workpiece with a handling system

    DE102015225667A1