Spherical consolidation abrasive grinding and polishing pad for processing optical element

A technology of fixed abrasive and spherical optics, applied in the direction of grinding tools, etc., can solve the problems of pollution, low processing efficiency and high processing cost, and achieve the effect of reducing pollution, high processing efficiency and low processing cost.

Inactive Publication Date: 2012-09-12
NANJING YINGXING OPTICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of severe pollution, high processing cost and low processing efficiency in the existing spherical optical ele

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: The polishing pad of this embodiment is that the abrasive material and the thermosetting resin are uniformly mixed to form a spherical consolidated abrasive polishing pad after solidification, and their mass percentage is abrasive material: resin=5%:95%.

[0018] The abrasive is diamond; the particle size is 50 nanometers.

[0019] The thermosetting resin is unsaturated polyester resin.

[0020] The spherical surface is a convex spherical surface; the diameter of the spherical surface is 3.5 mm, and the radius of curvature is 2.5.

Embodiment 2

[0021] Embodiment 2: The polishing pad of this embodiment is that the abrasive material and the thermosetting resin are uniformly mixed to form a spherical consolidated abrasive grinding polishing pad after solidification, and their mass percentage is abrasive material: resin=30%: 70%.

[0022] The abrasive is silicon carbide; the grain size of the abrasive is 50 microns.

[0023] The thermosetting resin is phenolic resin.

[0024] The spherical surface is a concave spherical surface; the diameter of the spherical surface is 500 mm, and the radius of curvature is 5 mm.

Embodiment 3

[0025] Embodiment 3: The polishing pad of this embodiment is that the abrasive material and the thermosetting resin are uniformly mixed to form a spherical consolidated abrasive polishing pad after solidification, and their mass percentage is abrasive material: resin=50%: 50%.

[0026] The abrasive is a combination of silicon oxide and boron carbide; the grain size of the abrasive is 100 microns.

[0027] The thermosetting resin is a combination of epoxy resin and polybutadiene resin.

[0028] The spherical surface is a convex spherical surface; the diameter of the spherical surface is 1000 mm, and the radius of curvature is 10 mm.

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Abstract

The invention discloses a spherical consolidation abrasive grinding and polishing pad for processing an optical element, which is characterized in that an abrasive is uniformly mixed with thermosetting resin, and the spherical consolidation abrasive grinding and polishing pad is formed after consolidation, wherein the mass percent of the abrasive to the thermosetting resin is (5-50 percent):(50-95 percent). The abrasive is one or the combination of more of diamond, silica, cerium oxide, aluminum oxide, aluminum oxide, silicon carbide, boron carbide and zirconium oxide, and has the grain of 50nanometers-100micrometers; the thermosetting resin is one or the combination of unsaturated polyester resin, epoxy resin, phenolic resin and polybutadiene; a spherical surface is a convex spherical surface or concave spherical surface and has a diameter of 3.5-1000 micrometers and a radius of curvature of 2.5-infinity. The grinding and polishing of the spherical surface of the consolidation abrasive has the characteristics of stable grinding and polishing properties, simple process, high processing efficiency, low processing cost, no environment pollution and the like.

Description

technical field [0001] The invention relates to a finishing tool, in particular to a fixed abrasive grinding and polishing pad for processing optical elements, in particular to a fixed abrasive grinding and polishing pad for processing spherical optical elements. Background technique [0002] Spherical optical components are widely used in optical microscope systems, medical endoscope systems and other fields, and the demand is large and increasing. With the improvement of imaging precision requirements, the surface quality requirements of spherical optical components are also getting higher and higher, while spherical optical components mainly use ultra-precision grinding and polishing as their processing means. The level of grinding and polishing technology restricts the development of technologies closely related to the security of our national economy and national defense, such as hard disks, optics, and semiconductors. Spherical polishing pads are required to process s...

Claims

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Application Information

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IPC IPC(8): B24B37/11
Inventor 江斌
Owner NANJING YINGXING OPTICAL INSTR
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