Polishing method and polishing equipment for 3D sapphire

Abstract

The invention relates to a polishing method set according to polishing equipment, wherein the polishing method comprises abrasive material preparation, clamper installation and starting, spraying nozzle adjustment, abrasive material pre-stirring, air pump starting, abrasive material recovery, and other steps. The present invention further provides polishing equipment for 3D sapphire, wherein the polishing equipment comprises a working table and a rotation base arranged on the working table, the rotation base is provided with a clamper for fixing a 3D sapphire part, a spraying gun fixed on the working table is arranged beside the rotation base, the spraying nozzle of the spraying gun is aligned with the 3D sapphire part on the clamper, the gas inlet of the spraying gun is connected to a gas pump through a gas conveying pipe, the gas inlet of the gas pump is connected to a material bin filled with a abrasive material, and the abrasive material is a rubber ball and/or ceramic ball with diamond micro-powder adhered on the surface. According to the present invention, the rubber ball and/or ceramic ball with diamond micro-powder adhered on the surface is sprayed through the spraying gun and impacts onto the processed surface of the sapphire part, the grinding force is provided for the rough surface of the part by using the impacting force of the diamond micro-powder, the polishing is uniform, and the polishing effect is good.

Description

technical field [0001] The invention relates to the field of 3D sapphire processing, in particular to a polishing method and polishing equipment for 3D sapphire. Background technique [0002] Artificial sapphire crystal (a-Al2O3) is widely used as window material because of its special physical, chemical and optical properties. As a window material, sapphire needs to be polished to obtain better optical and aesthetic effects. With the increasing application of sapphire cover and touch screen, the structure is also becoming more and more complex. 2.5D, 3D and other structural products have appeared one after another and have increasingly penetrated into people's life and work. Especially for products with 3D structure, it involves 3D surface polishing, which is difficult to polish. Existing sapphire products are mostly polished by traditional flat grinder / sweep grinder with polishing liquid. The process is simple. Due to the high hardness of sapphire, the roughness of the p...

AI Technical Summary

Problems solved by technology

Especially for products with 3D structure, it involves 3D surface polishing, which is difficult to polish

Existing sapphire products are mostly polished by traditional flat grinder / sweep grinder with polishing liquid. The process is simple. Due to the high hardness of sapphire, the roughness of the product is difficult to meet the requirements, and the polishing liquid is easy to erode the non-processed surface, resulting in surface defects. Very low appearance yield

Chinese patent 201410189761.6 discloses a method for preparing diamond micropowder sapphire polishing. The preparation method of the polishing liquid is: add diamond micropowder and sodium silicate powder in water and stir to make the diamond micropowder adhere to the water glass formed by the reaction of sodium silicate and water On the gel, a suspension containing water glass and diamond powder is formed. Because the water glass gel in the suspension is very soft, when it is polished, the grinding force of the diamond micropowder on the sapphire is easily weakened by the water glass gel. If the buffer is removed, the polishing effect is difficult to guarantee, and water glass is corrosive and highly irritating, which can cause burns to the human body and is unsafe to operate. In addition, the recovery of its diamond powder requires sodium hydroxide to gel the water glass. Dissolution can only be recycled, and the safety risk is greater in operation

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