Magnetorheological polishing grinding wheel device adopting open magnetic field

Abstract

The invention discloses a magnetorheological polishing grinding wheel device adopting an open magnetic field. The magnetorheological polishing grinding wheel device comprises a main magnetic pole and a rotating magnetic pole, wherein the main magnetic pole comprises an outer wall, an inner wall and a circular ring-shaped bottom surface; the main magnetic pole is integrally formed; a clearance is reserved between the outer wall and the inner wall; a copper coil is mounted inside the clearance; the rotating magnetic pole is embedded in the inner wall; a working groove filled with a magnetorheological fluid is further embedded in the upper end of the rotating magnetic pole; a grinding wheel which enables the magnetorheological fluid to form a Bingham body is arranged at the upper end of the rotating magnetic pole; and a belt pulley mounting shaft is connected at the lower end of the rotating magnetic pole. The magnetorheological polishing grinding wheel device has the advantages that the structure is simple, the device is convenient and practical, a vortex effect can be avoided, the processing efficiency is improved, the problem of unstable motion is overcome, a closed loop does not need to be formed, a stable strong magnetic field can be generated, and the polishing purpose is achieved.

Description

technical field [0001] The invention relates to the technical field of ultra-smooth processing on the surface of optical parts, in particular to an electromagnetic polishing grinding head and a device with an open magnetic field. Background technique [0002] The development of modern short-wave science, strong light optics, electronics and thin film science requires that optical components should have high reflectivity, high surface accuracy, low roughness and high strength, so the requirements for optical surfaces are extremely stringent, such as surface without lattice Distortion defects, basically no residual stress, extremely low surface roughness, no contamination by foreign impurities, high geometric accuracy, and the substrate surface should have accurate crystal orientation, etc. In particular, the huge increase in the demand for optical parts with irregular shapes such as 2.5D, 3D, and spherical surfaces has put forward more and more stringent requirements for the ...

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Problems solved by technology

[0010] In view of the deficiencies in the existing technology, the purpose of the patent of the present invention is to provide a magneto-rheological polishing grinding wheel device using an open magnetic field, which can overcome the problems of the existing technology that the electromagnetic intensity is difficult to increase, the processing efficiency is low, and the equipment structure is complicated.

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