Abstract: To solve the problems of low polishing efficiency of high quality complex surface, a force rheological polishing(SRP) technique is proposed.By controlling the nonlinear rheological properties of non-Newtonian fluid under shear stress and flow field parameters of the polishing fluid, the shear stress between the polishing fluid and the polished surface is adjusted to form a rheological layer on the polished surface, which flexible gripping abrasive to achieve material removal.The process characteristics of SRP are studied, the experimental results show that the higher the polishing speed and abrasive concentration, the higher the material removal rate and the smaller the polished surface roughness.However, when the polishing fluid mass fraction is constant, the polishing surface quality is less affected by abrasive particle size, and the material removal rate decreases with the increase of abrasive particle size.The SRP results of quartz hemispheric resonator, cemented carbide insert and lithium tantalite substrate show that this method can achieve high efficiency ultra-precision polishing of metal, glass, carbide, crystal and other materials with plane, rotary surface and complex surface without additional physical field, which shows that it has broad application prospects.

Key words: force rheological, non-Newtonian fluid, shear stress, polishing