Non-Newtonian fluid thickening polishing method and polishing system based on magnetic field assist

Abstract

The invention discloses a non-Newtonian fluid thickening polishing method based on a magnetic field assist. The method comprises the following steps: S1: adding non-Newtonian fluid polishing liquid with magnetorheological properties into a polishing liquid tank, and immersing a polishing workpiece in the non-Newtonian fluid polishing liquid through a holding device with a driving system, and turning on a magnetic field generating device; S2: under the action of the driving system, driving the polishing workpiece to rotate by the holding device, enabling the polishing workpiece and the non-Newtonian fluid polishing liquid to move relative to each other, and cutting the surface of the polished workpiece by abrasive grains in the non-Newtonian fluid polishing liquid, thereby completing the polishing process. The invention further correspondingly provides a non-Newtonian fluid thickening polishing system based on the magnetic field assist. The non-Newtonian fluid thickening polishing method provided by the invention is low in consumables cost, high in polishing efficiency and good in polishing effect, and can realize ultra-precision polishing of the polished workpiece.

Description

technical field [0001] The invention belongs to the field of ultra-precision machining, and in particular relates to a polishing method and a polishing system. Background technique [0002] Complex curved surfaces such as free-form surfaces and aspheric surfaces have been gradually used in the design of parts in many application fields such as aerospace, optical systems, power machinery components, and biomedical molds. High-precision surfaces are of great significance to various equipment: for example, effectively improving the life and reliability of key components of spacecraft; correcting various aberrations of high-precision aspheric lenses in optical systems, optimizing their identification capabilities, and reducing device costs; improving The surface accuracy of high-precision and complex curved surface parts for vehicles reduces mechanical wear and fully optimizes work efficiency. According to statistics, as many as 30% of mold cavities are designed with free-form ...

AI Technical Summary

Problems solved by technology

However, because shear thickening polishing has strict requirements on motor speed and torque parameters, and at the same time, the area where severe thickening occurs is narrow, the thickening effect is weakened with the improvement of surface quality, resulting in low polishing efficiency

Images