CN110465897B

CN110465897B - Manufacturing method of grinding disc for processing tellurium oxide crystals

Info

Publication number: CN110465897B
Application number: CN201910743986.4A
Authority: CN
Inventors: 徐斌
Original assignee: Jiangsu Normal University
Current assignee: Jiangsu Normal University
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2021-08-24
Anticipated expiration: 2039-08-13
Also published as: CN110465897A

Abstract

The invention discloses a grinding disc for processing tellurium oxide crystals and a manufacturing method thereof, wherein heavy flint glass is used as a grinding disc material and is cut into a round grinding slice, the thickness of the grinding slice is 12-15mm, a center hole is drilled at the center of the grinding slice by a diamond glass drill bit, and then at least two circles of through holes are drilled on the surface of the grinding slice by taking the center of the center hole as a reference; sticking the perforated frosted thin sheet on a ceramic substrate with the thickness of 20-25mm by using fire paint; the surface of the abrasive sheet was roughened with a 800 mesh silicon carbide abrasive. The invention uses the heavy flint glass as the material of the grinding disc, overcomes the problems of large hardness, strong toughness and the like of the cast iron grinding disc, and the surface of the processed tellurium oxide crystal device has no defects of scratches, cracks and the like.

Description

Manufacturing method of grinding disc for processing tellurium oxide crystals

Technical Field

The invention relates to the technical field of optical device processing, in particular to a grinding disc for processing tellurium oxide crystals and a manufacturing method thereof.

Background

The tellurium oxide crystal is used as an acousto-optic material with a high quality factor, has good birefringence and optical rotation performance, under the same clear aperture, the resolution of an acousto-optic device made of the tellurium oxide crystal can be improved by orders of magnitude, and the acousto-optic material has the advantages of higher response speed, smaller driving power, higher diffraction efficiency, more stable performance and the like, so the tellurium oxide crystal is widely applied in recent years.

Disclosure of Invention

The invention aims to provide a grinding disc for processing tellurium oxide crystals, which can greatly improve the quality and the qualification rate of ground products of tellurium oxide crystal devices.

Another object of the present invention is to provide a method for manufacturing the above-mentioned grinding disc for processing tellurium oxide crystals, which is simple to manufacture.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a dull polish dish for processing tellurium oxide crystal, includes ceramic substrate and fixes the dull polish thin slice at ceramic substrate upper surface, ceramic substrate is the disc, the center of dull polish thin slice is equipped with the centre bore, the diameter of centre bore is 12mm, still sets up a plurality of through-holes that use the centre of a circle of centre bore to set up with the circumference as the benchmark on the dull polish thin slice, the diameter of through-hole is 10mm, the material of dull polish thin slice is heavy flint glass, the upper surface of dull polish thin slice is equipped with the dull polish layer.

Preferably, the through holes are at least provided with an inner group and an outer group, and the distance from the center of the through hole at the outermost ring to the edge of the frosted sheet is 20 mm.

Preferably, the thickness of the frosted thin sheet is 12-15 mm.

Preferably, the ceramic substrate has a thickness of 20 to 25 mm.

The invention also provides a manufacturing method of the grinding disc for processing the tellurium oxide crystals, which comprises the following steps:

1) heavy flint glass is used as a grinding disc material and is cut into round grinding slices, and the thickness of each grinding slice is 12-15 mm;

2) firstly, drilling a center hole in the center of a frosted sheet by using a diamond glass drill bit, and then drilling at least two circles of through holes on the surface of the frosted sheet by taking the center of the center hole as a reference;

3) sticking the perforated frosted thin sheet on a ceramic substrate with the thickness of 20-25mm by using fire paint;

4) the surface of the abrasive sheet was roughened with a 800 mesh silicon carbide abrasive.

Compared with the prior art, the invention has the following beneficial effects:

because the tellurium oxide crystal material has the defects of small hardness, large brittleness, frangibility and the like, the surfaces of tellurium oxide crystal devices processed by using a conventional cast iron disc as a grinding disc have the defects of scratches, cracks and the like, the problems of large hardness, strong toughness and the like of the cast iron grinding disc are solved by using heavy flint glass as the grinding disc material, and the surfaces of the processed tellurium oxide crystal devices have no defects of scratches, cracks and the like. The conventional grinding disc is grooved on the grinding disc, the grinding materials can be thrown away in the rotation process of the grinding disc, waste is generated, holes are formed in the heavy flint glass grinding disc, the grinding materials can be stored in the holes, the defect that the grinding materials are large in loss due to the grooving method of the conventional grinding disc on the grinding disc is overcome, the cost can be reduced to the maximum extent, and the sufficient supply of the grinding materials on the whole disc surface can be guaranteed when the diameter of a center hole of the grinding disc is larger than the diameter of an outer hole. The ceramic plate is used as a substrate material, the ceramic substrate is small in stable deformation, and the surface shape of the grinding disc is kept. The surface of the abrasive disk is ground to be rough by using 800-mesh boron carbide abrasive, so that the friction force can be increased, the grinding efficiency is improved, and the efficiency is improved. Compared with the cast iron grinding disc, the grinding disc manufactured by the invention has the advantages that the processing efficiency can be improved by 40 percent, and the product percent of pass can reach more than 96 percent.

Drawings

FIG. 1 is a schematic view of a frosted disc-sanded sheet for processing tellurium oxide crystals according to the present invention;

FIG. 2 is a schematic view of a grinding disc for processing tellurium oxide crystals according to the present invention;

FIG. 3 is an SEM image of the surface morphology of tellurium oxide crystals ground by a cast iron grinding disc;

FIG. 4 is an SEM image of the surface morphology of a tellurium oxide crystal ground by a common glass grinding disc;

FIG. 5 is an SEM image of the surface morphology of a tellurium oxide crystal ground by a heavy flint glass grinding disc;

in the figure: 1 through hole, 2 frosted thin slice, 3 fire paint, 4 ceramic substrate, 5 center hole.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1 to 2, a grinding disc for processing a tellurium oxide crystal comprises a ceramic substrate 4 and a grinding sheet 2 fixed on the upper surface of the ceramic substrate 4, wherein the ceramic substrate 4 is disc-shaped, the thickness of the ceramic substrate 4 is 20-25mm, the thickness of the grinding sheet 2 is 12-15mm, a central hole 5 is formed in the center of the grinding sheet 2, the diameter of the central hole 5 is 12mm, a plurality of through holes 1 which are arranged on the grinding sheet 2 by taking the circle center of the central hole 5 as the reference and on the same circumference are further formed, the diameter of each through hole 1 is 10mm, preferably, the through holes 1 are at least provided with an inner group and an outer group, and the distance from the center of the outermost circle of through holes 1 to the edge of the grinding sheet 2 is 20 mm.

The material of dull polish thin slice 2 is heavy flint glass, the upper surface of dull polish thin slice 2 is equipped with the dull polish layer.

The manufacturing method of the grinding disc for processing the tellurium oxide crystals comprises the following steps:

1) heavy flint glass is used as a grinding disc material and is cut into a round frosted slice 2, and the thickness of the frosted slice 2 is 12-15 mm;

2) firstly, drilling a center hole 5 in the center of a frosted slice 2 by using a diamond glass drill, wherein the diameter of the center hole 5 is 12mm, then drilling two circles of through holes 1 on the surface of the frosted slice 2 by taking the circle center of the center hole 5 as a reference, wherein the diameter of each through hole 1 is 10mm, and the distance from the center of each through hole 1 on the outer circle to the edge of the frosted slice 2 is 20 mm; the holes are punched to store the abrasive in the holes, so that the defect of large abrasive loss caused by a conventional method of slotting the abrasive disc on the abrasive disc is overcome, the cost can be reduced to the maximum extent, and the sufficient supply of the abrasive on the whole disc surface can be ensured by the diameter of the central hole being larger than that of the outer hole;

3) sticking the perforated frosted thin sheet 2 on a ceramic substrate 4 with the thickness of 20-25mm by using a fire paint 3; the ceramic plate is used as a substrate material, so that the ceramic substrate is small in stable deformation, and the surface profile of the abrasive disc is kept;

4) the surface of the frosted slice 2 is roughened by using 800-mesh silicon carbide abrasive, so that the friction force can be increased, the grinding efficiency is improved, and the efficiency is improved.

Fig. 3, fig. 4 and fig. 5 are SEM images of the surface morphology of the tellurium oxide crystal processed by the cast iron grinding disc, the ordinary glass grinding disc and the heavy flint glass grinding disc, respectively, and it can be seen from the SEM images that the surface of the tellurium oxide crystal ground by the cast iron grinding disc generates coarse ballast, the ballast is coarse and deep, the surface of the tellurium oxide crystal ground by the ordinary glass grinding disc has fine ballast, the surface sand holes of the tellurium oxide crystal ground by the heavy flint glass grinding disc are fine and uniform, and there is no defect such as any ballast, scratch, etc., compared with the processing by the cast iron grinding disc, the processing efficiency can be improved by 40%, and the product qualification rate can reach more than 96%.

Claims

1. The manufacturing method of the grinding disc for processing the tellurium oxide crystals is characterized by comprising the following steps of:

1) heavy flint glass is used as a grinding disc material and is cut into a round grinding sheet (2), and the thickness of the grinding sheet (2) is 12-15 mm;

2) firstly, drilling a central hole (5) in the center of a frosted sheet (2) by using a diamond glass drill, wherein the diameter of the central hole (5) is 12mm, then drilling at least two circles of through holes (1) on the surface of the frosted sheet (2) by taking the circle center of the central hole (5) as a reference, wherein the diameter of the through holes (1) is 10mm, and the distance from the center of the outermost circle of through holes (1) to the edge of the frosted sheet (2) is 20 mm;

3) sticking the perforated frosted thin slice (2) on a ceramic substrate (4) with the thickness of 20-25mm by using a fire lacquer (3), wherein the ceramic substrate (4) is in a disc shape;

4) the surface of the grinding sheet (2) is roughened by using 800-mesh silicon carbide grinding materials.