Nanometer magnetic product for minitype electromechanical machine

Abstract

The invention discloses a nanometer magnetic product for a minitype electromechanical machine; the magnetic product is prepared by adopting the mixture of nanometer magnetic powder, synthesized hydroxy metallic stearates, synthesized mineral oil and nanometer crystal whisker, caking and rusting of the magnetic powder, and sedimentation, clustering and leakage of magnetorheological fluid are avoided, therefore, the nanometer magnetic product can be widely applied and can replace the existing magnetic powder and the magnetorheological fluid; the nanometer magnetic product has the advantages of the existing magnetic product and can be widely applied to minitype electromechanical devices. The frictional wear of the device to the working surface is reduced, the magnetic-conductance performance of the magnetic product is increased, the power transmission property is improved and the volume of the device is reduced; under the action of the magnetic filed, the stress on the surface of a transmission part is uniform, the part deformation caused by extrusion of large-particle magnetic powder is avoided, therefore, the nanometer magnetic product has good compactness, heat stability and abrasion resistance, the using performance of a magnetic transmission system is improved, and the service life of the magnetic product body and the transmission system is prolonged.

Description

technical field [0001] The invention relates to a magnetic glue material, in particular to a nanometer magnetic glue for a micro-electromechanical device. Background technique [0002] Magnetic glue is a new type of material made of magnetic powder, colloidal support, dispersant and other auxiliary materials. It replaces the magnetic powder and magnetorheological fluid of the prior art. The magnetic glue is a colloidal material between liquid and solid. It can maintain the original shape in the free state, and can change itself into any shape when it is subjected to shear force. When it is working normally, the nano-magnetic glue can adhere to the cavity wall of the relative motion pair, and does not prevent the relative motion pair from being relatively free. Rotate, and after the coil is energized, nano-magnetic glue can generate resistance torque on the rotor like magnetic powder, and the resistance torque is proportional to the current in the coil. It has all the advanta...

AI Technical Summary

Problems solved by technology

[0003] However, the magnetic glue in the prior art is based on the stability of the power transmission and the output capacity of the power output. The magnetic powder particles are relatively large, generally between 0.1 and 0.55 μm. The friction on the surface is very large, so the power transmitted is also very large; in some small transmission systems with small volume and compact structure, the large particles of magnetic rubber will deform the parts due to extrusion under the force of the magnetic rubber transmission pair, and Larger wear means short failure cycle, which reduces the service life of the transmission system and wastes use and maintenance costs

[0004] At the same time, because the existing magnetic glue only pays attention to the mechanical safety of torque transmission, and adopts a single-component gel-shaped bracket and dispersant, the compactness, thermal stability and wear resistance are poor, so that the magnetic glue itself is prone to failure, thus Reduced service life of the transmission system