Abstract
A new precision finishing method based on soft-consolidation abrasives pneumatic wheel was proposed in order to solve the problems of finishing method to mould's freeform surface with high hardness and high resistance.Polymer binder was used to form a layer of abrasives on the surface of pneumatic wheel.Then every abrasive had micro-movement under the pressure and it would affect the adjacent abrasives to form group effect to achieve high-efficient cutting by concentration of stress.According to the Rabinoweizc's theory,the correction coefficient was given for Preston equation with the introduction of hardness proportion coefficient,surface hardness coefficient and particle size.Combined with the theory of elasticity,stress coefficient was modified under the situation of soft-consolidation.Quantitative model of the material removal was presented by the modified Preston equation.The velocity equation was constructed for any condition of contact.Simulation was found for studying on the relationship between feeding distances and presure by ANSYS.The empirical results show that the correction coefficient accords with the theoretical analysis and it brings in great reduction of the removel quantization error.With the contrast of experiments with different abrasive size,processing parameters were given for further study.
Published Version
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