Micro cutter passivation method and device based on flexible abrasive particles and magnetic composite fluid

Abstract

The invention relates to a micro cutter passivation method and device based on flexible abrasive particles and magnetic composite fluid, a cutting edge of a micro cutter is treated by adopting a magnetic composite fluid polishing principle, and a material on the surface of the cutter is slightly removed by utilizing the rheological property of the magnetic composite fluid and the flexible abrasive particles. Cutting edge passivation treatment and surface polishing treatment of the cutter can be achieved at the same time, and the cutter is high in passivation precision and good in consistency; batch passivation of the miniature cutters is achieved through the multi-clamp design, cutter passivation work and disassembly and assembly operation can be carried out at the same time, and the cutter passivation efficiency is improved. According to the micro cutter passivation method and device based on the flexible abrasive particles and the magnetic composite fluid, micro defects of a cutting edge of a micro cutter can be effectively removed, the contour shape of the cutting edge is improved, tiny burrs on the surface of the cutter are eliminated, the surface quality of the cutter is improved, the service life of the cutter is prolonged, and the part machining quality is improved; and high-precision and high-efficiency passivation treatment on the micro cutter is realized.

Description

Technical field [0001] The present invention relates to a tool passivation technique, particularly to a method and apparatus for micro-tool-based passivation and flexible abrasive grain composite magnetic fluid, belonging to the field of precision processing technology. Background technique [0002] With the continuous development of high technology, application of small parts with complex structures in the defense and civil applications are increasingly widespread, and high-quality micro-tool is an important guarantee to realize small parts precision micromachining. After grinding wheel, the inevitable presence of micro-tool cutting edge at the edge notches microscopic defects, such as cracks, but also the presence of a surface micro-pits tool flutes, other flank, micro-cracks, debris adhering , minor glitches and other phenomena. During the cutting process, sharp and easily lead to defective edge chipping, broken teeth and other tools failure conditions, and poor surface qualit...

AI Technical Summary

Problems solved by technology

[0003]The geometric structure of micro-tools is small, and the tool strength and rigidity are low. Common tool passivation processes such as sandblasting, abrasive flow, and abrasive nylon brushes method, magnetic grinding method and other methods, due to the large mechanical force of the abrasive on the tool during the passivation process, it is easy to cause the tool to break, and the abrasive is difficult to evenly act on the complex shape of the cutting edge, resulting in low passivation accuracy and poor consistency. Not suitable for passivation of micro tools

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