Hard optical material polishing die combined structure and manufacturing method

Abstract

The invention provides a hard optical material polishing die combined structure and a manufacturing method. The polishing die combined structure comprises a metal base body, an asphalt elastic layer and a plurality of polyurethane polishing sheets; the asphalt elastic layer is arranged on the surface of the metal base body; the plurality of polyurethane polishing sheets which are circular are arranged on the asphalt elastic layer. The hard optical material polishing die combined structure integrates the mobility of polishing asphalt and the efficient polishing capacity of polyurethane, the polishing time can be reduced by 50%, and therefore, the polishing efficiency of the hard optical material can be effectively increased on the premise that the surface form precision is met. The hard optical material polishing die combined structure is simple and convenient to manufacture, the materials are easily obtained, the durability is more than three times that of the classical polishing asphalt; the hard optical material polishing die combined structure can be widely applied to the polishing processing of a hard optical material; when in use, the classical polishing machine tool can be directly put into use without changing, so that the cost advantage is obvious.

Description

technical field [0001] The invention belongs to the field of optical cold processing, and relates to a polishing mold for hard optical materials, in particular to a composite structure and a manufacturing method of a hard optical material polishing mold. Background technique [0002] With the development of precision optical technology and demand, hard optical materials such as single crystal silicon, spinel, sapphire, etc. are more and more widely used. The difficulty in balancing the precision and efficiency of hard optical material polishing has always been an obstacle to its application. [0003] There are two polishing methods for hard optical materials, classical polishing and high-speed polishing. The classical polishing method uses a polishing mold made of a metal substrate coated with polished asphalt, which is polished at a low speed and low pressure, and has the characteristics of high surface shape accuracy and excellent surface quality; As a result, frequent r...

AI Technical Summary

Problems solved by technology

The classical polishing method uses a polishing mold made of a metal substrate coated with polished asphalt, which is polished at a low speed and low pressure, and has the characteristics of high surface shape accuracy and excellent surface quality; As a result, frequent rework is required, and the polishing efficiency of the polishing mold made of polished asphalt is low

The high-speed polishing method adopts the polishing mold made of polyurethane polishing leather on the surface of the metal substrate, high-speed and high-pressure polishing, which is characterized by high polishing efficiency and medium surface quality, but its disadvantages are that the polishing mold is complicated and expensive to make, and the obtained surface shape accuracy Difficult to meet the requirements of precision optics

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