Bracket for fixing rod-shaped plane mirror

Abstract

The utility model discloses a bracket for fixing a rod-shaped plane mirror, the main body of the bracket is a cylindrical chassis, a plurality of groups of counter bores are uniformly distributed on the upper surface of the chassis, and the center of the lower surface of the chassis is a V-shaped concave point for fixing the chassis on a pressure head; a hollow cylindrical sleeve with the upper end open is placed in the counter bore, the rod-shaped plane mirror is placed in the sleeve, and the upper surface of the rod-shaped plane mirror protrudes out of the counter bore and the sleeve. According to the utility model, the problems that the polishing liquid is easy to pollute and the surface of the lens is easy to damage in the existing mode of fixing and processing the rod-shaped plane mirror by using a binder are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rod-shaped plane mirror processing, in particular to a bracket used for fixing the rod-shaped plane mirror. Background Art

[0002] Optical lenses with a thickness-to-diameter ratio greater than 2:1 are generally called rod-shaped plane mirrors. During the processing of rod-shaped plane mirrors, if a fixture is used to clamp one side of a single lens and then process the other plane, the force point of the lens is high, and it is easy to cause severe shaking or the phenomenon of being unable to clamp, so that it is impossible to process a plane surface shape that meets the requirements. If the method of gluing multiple rod-shaped plane mirrors into a disc is used for plane processing, it is necessary to use an adhesive to bond one side of the lens to a fixed disc, and clamp the fixed disc to process the other side of the multiple lenses. In this fixing method, during the lens processing process, the adhesive can easily fall into the polishing liquid and contaminate the polishing liquid, causing scratches on the lens surface and reducing the service life of the polishing powder. At the same time, the process of gluing and disassembling multiple lenses is cumbersome and inefficient. When disassembling the lenses, the adhesive is also easy to fall off, damaging the processed lens surface and affecting its appearance quality. Summary of the invention

[0003] Purpose of the utility model: The purpose of the utility model is to provide a bracket for fixing a rod-shaped plane mirror which is convenient for disassembling and assembling the rod-shaped plane mirror, and the plane of the rod-shaped plane mirror is processed by clamping the bracket.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model discloses a bracket for fixing a rod-shaped plane mirror, which is a cylindrical chassis with multiple groups of countersunk holes evenly arranged on the upper surface of the chassis. A cylindrical sleeve with an open upper end and a hollow interior is placed in the countersunk holes. The rod-shaped plane mirror is placed in the sleeve, and the upper surface of the rod-shaped plane mirror protrudes from the countersunk holes and the sleeve.

[0005] The center of the lower surface of the chassis is a V-shaped concave point for fixing it on the pressure head.

[0006] Wherein, a concave step is provided at the bottom of the countersunk hole, an O-shaped rubber ring is horizontally placed in the step, and the diameter of the rubber ring is greater than the depth of the concave step.

[0007] Wherein, the bottom of the sleeve is in contact with the rubber ring.

[0008] Wherein, the gap between the cylindrical surface of the rod-shaped plane mirror and the inner wall of the sleeve ranges from 0.05 to 0.1 mm.

[0009] Wherein, flannel cloth is arranged between the cylindrical surface of the rod-shaped plane mirror and the inner wall of the sleeve.

[0010] Among them, the gap between the outer ring of the sleeve and the inner wall of the countersunk hole ranges from 0.01 to 0.02 mm.

[0011] Beneficial effects: The utility model has the following advantages: 1. The bracket has a simple structure and can fix multiple groups of rod-shaped plane mirrors at the same time, which is suitable for batch processing of rod-shaped plane mirrors with high efficiency; 2. The bracket uses a sleeve to fix multiple groups of rod-shaped plane mirrors on the chassis of the bracket, instead of using an adhesive to fix the rod-shaped plane mirrors, effectively preventing the polishing liquid from being contaminated by the adhesive and causing damage to the appearance of the rod-shaped plane mirrors, thereby ensuring the quality of the lens; 3. The pressure head is fixed at the concave point on the lower surface of the bracket chassis, and at the same time, the grinding rod is pressed against the plane of the multiple groups of rod-shaped plane mirrors installed on the upper surface of the chassis for grinding, which increases the stability of the chassis and avoids the problem of severe shaking or inability to clamp a single rod-shaped plane mirror directly for processing, which affects the processing accuracy, thereby improving the grinding accuracy of the surface of the rod-shaped plane mirror. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the bracket structure. DETAILED DESCRIPTION

[0013] The technical solution of the utility model is described in detail below in conjunction with the embodiments and drawings.

[0014] like Figure 1 As shown, the bracket described in the utility model is a cylindrical chassis 1, with multiple groups of countersunk holes evenly arranged on its upper surface, and a V-shaped concave point at the center of its lower surface. The depth of the V-shaped concave point is as deep as possible while meeting the strength requirements of the main body, thereby reducing the stress point of the chassis 1 during machine tool processing and increasing its stability. The chassis 1 is made of metal, preferably stainless steel.

[0015] A concave step is provided at the bottom of each group of countersunk holes on the chassis 1, and an O-type rubber ring 4 is placed horizontally in the step, and the diameter of the O-type rubber ring 4 is greater than the depth of the concave step. In the countersunk hole, a cylindrical sleeve 3 with an open upper end and a hollow interior is placed on the upper surface of the step. The material is plastic, preferably white steel. The gap between the outer ring of the sleeve 3 and the inner wall of the countersunk hole ranges from 0.01 to 0.02 mm, and the upper end of the sleeve 3 protrudes from the countersunk hole. The O-type rubber ring 4 increases the friction between the chassis 1 and the sleeve 3, and also plays a role in shock absorption.

[0016] A rod-shaped plane mirror 2 is placed in each sleeve, and the gap between the outer ring of the rod-shaped plane mirror 2 and the inner wall of the sleeve 3 is in the range of 0.05-0.1 mm, and the upper surface of the rod-shaped plane mirror 2 protrudes from the upper end of the sleeve 3. At the same time, the thickness (same height) of both ends of the rod-shaped plane mirror 2 after processing is also greater than the internal depth of the sleeve 3 to prevent the upper and lower surfaces of the rod-shaped plane mirror 2 from affecting the sleeve 3 during the processing.

[0017] Working principle:

[0018] Place the rubber ring 4 and the sleeve 3 into the countersunk holes on the chassis 1 in sequence;

[0019] Wrap the cylindrical surface of each rod-shaped plane mirror 2 with flannel and put it into the sleeve 3;

[0020] Put the chassis 1 filled with the rod-shaped plane mirror 2 into water, so that the gaps between the rod-shaped plane mirror 2 and the sleeve 3, and between the sleeve 3 and the chassis 1 are fully filled with water. The adsorption force of water can help fix the sleeve 3 and the rod-shaped plane mirror 2. When the chassis 1 is inverted, the sleeve 3 and the rod-shaped plane mirror 2 are not easy to fall off from the chassis 1.

[0021] Place the entire bracket on the flat polishing mold, and press the pressure head to the concave point on the lower surface of the chassis 1 to fix it and prevent it from shaking;

[0022] The grinding rod is started to grind the upper surfaces of all the rod-shaped plane mirrors 2 on the chassis 1 synchronously;

[0023] After the grinding is completed, the bracket is taken out, and the rod-shaped plane mirror 2 is taken out in turn, and the other side of the rod-shaped plane mirror 2 is processed in the same manner as the above steps.

Claims

1. A bracket for fixing a rod-shaped plane mirror, characterized in that: The bracket is a cylindrical chassis (1), and a plurality of groups of countersunk holes are evenly arranged on the upper surface of the chassis (1). A cylindrical sleeve (3) with an open upper end and a hollow interior is placed in the countersunk hole. The rod-shaped plane mirror (2) is placed in the sleeve (3), and the upper surface of the rod-shaped plane mirror (2) protrudes from the countersunk hole and the sleeve (3).

2. The bracket for fixing a rod-shaped plane mirror according to claim 1, characterized in that: The center of the lower surface of the chassis (1) is a V-shaped concave point for fixing it on the pressure head.

3. The bracket for fixing a rod-shaped plane mirror according to claim 1, characterized in that: A concave step is provided at the bottom of the countersunk hole, an O-shaped rubber ring (4) is horizontally placed in the step, and the diameter of the rubber ring (4) is greater than the depth of the concave step.

4. The bracket for fixing a rod-shaped plane mirror according to claim 3, characterized in that: The bottom of the sleeve (3) is in contact with the rubber ring (4).

5. The bracket for fixing a rod-shaped plane mirror according to claim 1, characterized in that: The gap between the cylindrical surface of the rod-shaped plane mirror (2) and the inner wall of the sleeve (3) is in the range of 0.05 to 0.1 mm.

6. The bracket for fixing a rod-shaped plane mirror according to claim 5, characterized in that: A flannel is provided between the cylindrical surface of the rod-shaped plane mirror (2) and the inner wall of the sleeve (3).

7. The bracket for fixing a rod-shaped plane mirror according to claim 1, characterized in that: The clearance between the outer ring of the sleeve (3) and the inner wall of the counterbore is in the range of 0.01 to 0.02 mm.

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