CN220516346U

CN220516346U - High-speed high-precision polishing device using fixed abrasive

Info

Publication number: CN220516346U
Application number: CN202321791146.3U
Authority: CN
Inventors: 夏晓明; 雍万军
Original assignee: II VI Optics Suzhou Co Ltd
Current assignee: II VI Optics Suzhou Co Ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-02-23
Anticipated expiration: 2033-07-10

Abstract

The utility model discloses a high-speed high-precision polishing device applying a fixed abrasive, which comprises a polishing die and a lens clamp base, wherein the fixed abrasive is adhered to the bottom of the polishing die, the fixed abrasive comprises a diamond particle layer and a soft basal layer, the lens clamp base comprises a base main body connected to a high-speed polishing machine, and the front end of the base main body is provided with a lens positioning structure for clamping a polished lens; by the mode, the high-speed polishing device can realize high-speed polishing of the lens, and can enable the surface type precision of the lens to reach the wavelength level.

Description

High-speed high-precision polishing device using fixed abrasive

Technical Field

The utility model relates to the technical field of optical lens polishing, in particular to a high-speed high-precision polishing device applying fixed abrasive.

Background

The polishing manufacture of the optical lens generally adopts a cold working mode, namely, a low-speed rotating shaft and a particulate abrasive material of corresponding tiny particles are used as polishing powder, such as alumina, cerium oxide and the like, so that the optical lens is polished, and higher surface type precision and good surface quality are obtained;

the low-speed rotating shaft polishing processing mode can process the optical lens with high precision, but particularly long processing time is required for the condition that a damage layer is caused by the previous process of removing the lens, and defects such as pits, scratches and the like are easily generated on the surface of the lens in the processing process, so that the processing needs to be reworked for many times, the manual operation amount of the whole processing process is large, the working procedures are more, and the requirement on the skills of operators is higher.

In another processing mode of cold processing, a high-speed rotating shaft is utilized, and particulate abrasive materials of tiny particles, such as alumina, cerium oxide and the like, are used as polishing powder in a matched mode, so that an optical lens can be polished, and the surface of the lens can be polished relatively quickly;

the high-speed rotating shaft polishing processing mode has the advantages that the damage layer removing speed is high, the polishing efficiency is high, the quality defects on the surface of the lens are easy to remove, the surface type precision is relatively poor, the good lens surface type is not easy to obtain, and the polishing mode needs to be repeatedly trimmed to obtain the similar surface type.

Based on the above investigation, a new polishing method is to be developed.

Disclosure of Invention

The utility model mainly solves the technical problem of providing a high-speed high-precision polishing device applying fixed abrasive, which not only can realize high-speed polishing of lenses, but also can enable the surface type precision of the lenses to reach the wavelength level.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides an use high-speed high accuracy burnishing device of fixed abrasive material, including polishing mould and lens anchor clamps base, polishing mould's bottom bonding is provided with the fixed abrasive material, the fixed abrasive material includes diamond particle layer and soft stratum basale, lens anchor clamps base is including being connected to the base main part on the high-speed burnishing machine, the front end of base main part is provided with the lens location structure that is used for the centre gripping polishing lens.

Preferably, the polishing die comprises a polishing die adapter, one side of the polishing die adapter is provided with a connector connected to the high-speed polishing machine, and the other side of the polishing die adapter is provided with a polishing die in a bonding mode.

Preferably, the polishing die adapter is provided with a plurality of bolt holes along the circumferential direction, the adapter is correspondingly provided with a plurality of connecting holes, and the number of the bolt holes is larger than that of the connecting holes.

Preferably, the outer wall of the polishing die adapter is designed with an obtuse angle chamfer and a weight reduction function.

Preferably, the diamond particle layer is formed by solidifying micron-sized particle diamond combined with a self-sharpening adhesive.

Preferably, the base body is hollow in the axial direction, and the bottom is mounted on the high-speed polishing machine through a reverse thread.

Preferably, the lens positioning structure comprises a fastening adjusting screw in threaded connection with the base main body, a rubber sealing gasket is sleeved on the fastening adjusting screw, and a bakelite clamp is screwed outside the base main body.

The beneficial effects of the utility model are as follows:

aiming at the technical defect of low surface type precision of the high-speed polishing optical lens in the prior art, the utility model provides a polishing device capable of obtaining the high-precision optical lens by high-speed polishing, which can be fully adjusted by fastening an adjusting screw by a clamp, is suitable for processing optical lenses with different thicknesses, and greatly enhances the universality of the clamp device; the beveling design of the top end of the bakelite clamp is combined, so that the worn part can be removed conveniently and quickly, and the service life of the clamp is prolonged; meanwhile, the bridge deck design combined with the rubber sealing ring is high in tightness, the air pressure in the clamp is ensured to be stable when the air flow is switched, the cooling liquid cannot seep to the joint to abrade the main shaft, and finally the surface type precision of the processing optical lens reaches 0.5 wavelength level from 3 wavelengths through the mutual cooperation between the structures, so that the processing efficiency is improved by more than 30%, and the processing device has very good technical popularization value.

Drawings

FIG. 1 is a schematic view of a high-speed, high-precision polishing apparatus employing a fixed abrasive in accordance with the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1, showing the structural design of a fixed abrasive;

FIG. 3 is a schematic view showing the constitution of a polishing mold in the present utility model;

FIG. 4 is a schematic view of the structure of the polishing mold adapter of the present utility model;

FIG. 5 is a schematic cross-sectional view of a lens holder base of the present utility model showing the internal structural design and connection relationship;

the components in the drawings are marked as follows:

1. polishing the mold; 11. polishing the die adapter; 12. a joint; 13. polishing the mold; 14. bolt holes;

15. a connection hole; 2. a lens clamp base; 21. a base body; 22. fastening an adjusting screw; 23. a rubber gasket; 24. a bakelite clamp; 3. fixing abrasive materials; 4. polishing the lens.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Examples:

as shown in fig. 1, 3 and 4, a high-speed and high-precision polishing apparatus using a fixed abrasive comprises a polishing mold 1, the polishing mold 1 comprising a joint 12, a polishing mold adapter 11 and a polishing mold 13, wherein the joint 12 is made of stainless steel, and the polishing mold 1 is fixed by the joint 12 and a high-speed polisher. The polishing die adapter 11 is provided with a plurality of bolt holes 14 along the circumferential direction, the adapter 12 is correspondingly provided with a plurality of connecting holes 15, and the adapter 12 is connected with the polishing die adapter 11 through screws; meanwhile, the number of the bolt holes 14 is larger than that of the connecting holes 15, so that the connector 12 can be conveniently installed and can be used for other polishing procedures, and tools are saved. In addition, the outer wall of the polishing die adapter 11 is in an obtuse angle chamfer design, namely, the heavy chamfer shape is subjected to weight reduction treatment, so that the influence of rotation efficiency during processing is avoided. The polishing die 13 is a high-precision polishing die, and the polishing die adapter 11 and the polishing die 13 are connected in a bonding mode, so that the surface type precision of the polishing die 13 reaches the wavelength level of light, and the high-precision processing of an optical lens is facilitated.

As shown in fig. 1 and 2, the bottom of the polishing mold 1 is bonded with a fixed abrasive 3, the fixed abrasive 3 includes a diamond particle layer 31 and a soft base layer 32, wherein the diamond particle layer 31 is formed by curing a high-precision micron-sized particle diamond bonded self-sharpening adhesive, and is used for directly processing the surface of an optical lens, so that the polishing mold has good grinding rate, and simultaneously combines with the soft base, and is directly bonded with a back adhesive and the polishing mold 13, thereby not only ensuring stable aperture quality, but also obtaining excellent surface quality and good surface roughness.

As shown in fig. 1 and 5, a high-speed and high-precision polishing device using fixed abrasive materials further comprises a lens clamp base 2, a base main body 21 of the lens clamp base 2, the base main body 21 is hollow in the axial direction, the bottom is installed on a high-speed polishing machine through a reverse thread, a lens positioning structure is arranged at the front end of the base main body 21, the lens positioning structure comprises a fastening adjusting screw 22, the base main body 21 and the fastening adjusting screw 22 are rotationally connected through a thread mode, the base main body 21 and the fastening adjusting screw 22 are made of stainless steel, a rubber sealing pad 23 is sleeved on the fastening adjusting screw 22, a bakelite clamp 24 is screwed on the outer side of the middle of the base main body 21, and the fastening adjusting screw 22 can be adjusted according to the thickness of a polishing lens 4, so that the polishing lens 4 is higher than the bakelite clamp 24 by about 1/3 height, and polishing is facilitated; further, the apex of the bakelite clamp 24 is beveled to facilitate rapid removal of the worn portion; in operation, the bottom end blows air pressure, the rubber sealing pad 23 bulges, the polishing lens 4 is jacked up, the polishing lens is attached to the surface of the fixed abrasive 3, and corresponding polishing is carried out in high-speed rotation.

The working process of the scheme is as follows:

in actual operation, the fixed abrasive 3 is adhered to the bottom surface of the polishing die 13 through back adhesive, then the polishing die 13 is adhered to the polishing die adapter 11 through adhesive, the polishing die adapter 11 is riveted with the adapter 12 through screws, and the assembled polishing die 1 is mounted on a high-speed polishing machine through the adapter 12;

the rubber sealing gasket 23 is sleeved on the top end of the fastening adjusting screw 22, then screwed into the base main body 21, the bakelite clamp 24 is screwed onto the screw thread at the middle section of the base main body 21, and finally the assembled lens clamp base 2 is integrally screwed onto a main shaft of the machine;

according to the optical lens parameters, setting processing conditions, placing the polished lens 4 in the inner cavity of the bakelite clamp 24, starting the machine, rotating an upper shaft polishing mold, starting to spray cooling water, then moving a lower shaft upwards to prop against the upper shaft polishing mold, inputting gas to enable the optical lens to be tightly attached to the polishing mold, and simultaneously rotating a lower shaft main shaft to enable the optical lens and the polishing mold to move relatively at high speed, so that polishing operation is carried out on the lens;

after polishing is finished, the upper shaft and the lower shaft of the machine stop rotating, the lower shaft cavity gas becomes suction and vacuumizing, so that the rubber sealing gasket is sunken to suck the optical lens, the lower shaft moves back to the original position, suction is stopped through a foot switch, the processed optical lens is taken out, and polishing of the lens is finished.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A high-speed high-precision polishing device applying fixed abrasive is characterized in that: including polishing mould (1) and lens anchor clamps base (2), the bottom bonding of polishing mould (1) is provided with fixed abrasive material (3), fixed abrasive material (3) include diamond particle layer (31) and soft stratum basale (32), lens anchor clamps base (2) are including being connected to base main part (21) on the high-speed burnishing machine, the front end of base main part (21) is provided with the lens location structure that is used for centre gripping polishing lens (4).

2. The high-speed high-precision polishing apparatus using a fixed abrasive according to claim 1, wherein: the polishing die (1) comprises a polishing die adapter (11), one side of the polishing die adapter (11) is provided with a connector (12) connected to a high-speed polishing machine, and the other side of the polishing die adapter (11) is provided with a polishing die (13) in a bonding mode.

3. A high-speed high-precision polishing apparatus using a fixed abrasive according to claim 2, wherein: the polishing die adapter (11) is provided with a plurality of bolt holes (14) along the circumferential direction, a plurality of connecting holes (15) are correspondingly formed in the adapter (12), and the number of the bolt holes (14) is larger than that of the connecting holes (15).

4. A high-speed high-precision polishing apparatus using a fixed abrasive according to claim 2, wherein: the outer wall of the polishing die adapter (11) is designed to be obtuse-angle and chamfer and weight-reducing.

5. The high-speed high-precision polishing apparatus using a fixed abrasive according to claim 1, wherein: the diamond particle layer is formed by solidifying micron-level particle diamond combined with a self-sharpening adhesive.

6. The high-speed high-precision polishing apparatus using a fixed abrasive according to claim 1, wherein: the base body (21) is hollow in the axial direction, and the bottom is installed on a high-speed polishing machine through a reverse thread.

7. The high-speed high-precision polishing apparatus using a fixed abrasive according to claim 1, wherein: the lens positioning structure comprises a fastening adjusting screw (22) in threaded connection with the base main body (21), a rubber sealing pad (23) is sleeved on the fastening adjusting screw (22), and a bakelite clamp (24) is screwed outside the base main body (21).