CN215999876U

CN215999876U - Large-diameter lens polishing clamp

Info

Publication number: CN215999876U
Application number: CN202122059538.8U
Authority: CN
Inventors: 袁胜猛; 王兴华; 李健; 罗中旭; 应常建; 陆贵兵
Original assignee: Kunming Yunzhe High Tech Co ltd
Current assignee: Kunming Yunzhe High Tech Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-11
Anticipated expiration: 2031-08-30

Abstract

The utility model belongs to the technical field of lens polishing, and particularly discloses a large-diameter lens polishing clamp which comprises a convex or concave clamp body with a certain radian, wherein two ends of the clamp body are provided with right-angle clamping grooves, the middle part of the clamp body is provided with an air guide hole, the top of the air guide hole is provided with a convex block, a groove corresponding to a compressed air gun is formed in the convex block, the clamp body is fixedly connected with a damping positioning ring through the right-angle clamping grooves, an adsorption pad is arranged below the damping positioning ring, and a lens is adsorbed on the adsorption pad. The surface shape is not easy to change.

Description

Large-diameter lens polishing clamp

Technical Field

The utility model belongs to the technical field of lens polishing, and particularly relates to a large-aperture lens polishing clamp.

Background

The traditional optical lens polishing process is to stick a lens on a chassis by an adhesive, then put the chassis on a polishing die for polishing, melt the adhesive by heating after polishing, take down the lens, and then clean the adhesive by an organic solvent.

The requirement on the curvature of the large-caliber lens is high, and the surface shape of the part is often changed due to thermal change or uneven stress in the machining process. The traditional polishing method has the disadvantages of complex operation, low efficiency and high cost, and the deformation of the lens is easily caused in the process of loading and unloading the disc, so that the surface type and the polishing precision of the mirror surface are difficult to ensure. Therefore, the processing of large-diameter lenses presents new challenges for the process of placing and taking parts.

Disclosure of Invention

The utility model mainly aims to provide a large-caliber lens polishing clamp to solve the problems in the background technology.

The utility model provides the following technical scheme:

the utility model provides a heavy-calibre lens polishing clamp, is including the convex surface or the concave surface anchor clamps body that have certain radian, anchor clamps body both ends set up the right angle draw-in groove, and the middle part sets up the air guide hole, and the air guide hole top sets up the lug, sets up the recess that corresponds with the compressed air rifle in the lug, the anchor clamps body passes through right angle draw-in groove fixedly connected with shock attenuation holding ring, is provided with the adsorption pad under the shock attenuation holding ring, and the adsorption pad is gone up and is adsorbed there is the lens.

Further, the radian of the clamp body is 150-160 degrees.

Further, the lens is a silicon lens.

Further, the adsorption pad is a wax-free adsorption pad.

Furthermore, the material of shock attenuation holding ring is the plastic steel.

The large-aperture lens polishing clamp provided by the utility model is divided into a convex surface and a concave surface, which are respectively suitable for processing a spherical surface and an aspheric surface, the spherical surface (aspheric surface) of the lens is attached to the convex surface (concave surface) of the clamp and is uniformly stressed when the lens is in an upper plate state, and the compressed air is used for applying pressure through the air vent to release the plate when the lens is in a lower plate state.

Drawings

FIG. 1 is a schematic cross-sectional view of a male clamp of the present invention;

FIG. 2 is a schematic view of the clamping completion structure of the present invention.

Detailed Description

The utility model is further described with reference to the following figures and specific embodiments;

example 1

As shown in fig. 1-2, fig. 1 is a convex surface clamp, the two ends of the clamp body 1 are provided with right-angle clamping grooves, the middle part is provided with an air guide hole, the top of the air guide hole is provided with a convex block 3, a groove corresponding to a compressed air gun is formed in the convex block 3, the whole clamp is integrally formed, the clamp body 1 is fixedly connected with a damping positioning ring 4 through the right-angle clamping groove, an adsorption pad 5 is arranged below the damping positioning ring 4, a lens 2 is adsorbed on the adsorption pad 5, the radian of the clamp body 1 is 150 degrees, and the specific degree is specifically determined according to the polishing requirement of the lens 2 with a large caliber.

The radian of the radius of the clamp is processed according to the radius of a part, after the clamp is processed, the damping positioning ring is arranged on the clamp, the adsorption pad is attached to the clamp, and finally the large-caliber silicon is clamped in the clamp. The adsorption pad is a wax-free adsorption pad, the material of the damping positioning ring is plastic steel, when the device is used specifically, the specification of a large-caliber lens is phi 290mm, the device is clamped into a clamp, the clamping of the device is realized by using a clamp body to use an air guide hole as a central line, the concentricity and the coaxiality designed by the clamp per se ensure that the part is at a proper position, meanwhile, the radius of the concave-convex surface of the clamp is consistent with that of the convex-concave surface of the lens, the spherical surface of the part is ensured to be attached to the convex surface of the clamp and the stress is uniform, the lens is ensured not to be broken by the flexibility of the plastic steel of a clamp clamping groove, if the part is clamped by a tool clamping groove when the equipment rotates at a high speed, compared with the existing part, the device is fixed by vacuum adsorption, the device cannot fall off due to high-speed rotation even if the air tightness is poor, and the clamping is convenient and fast.

After the clamp is installed, polishing is carried out, after polishing is completed, a compressed air gun with certain pressure is used for aligning the air guide hole to blow compressed air, and the part comes out of the tool.

The method has the following specific advantages:

1. the tool is suitable for polishing equipment of various types such as Jp025.3B, Jp040.2B, JP015.4P and YGS304B, and the interface of the tool clamp can be changed according to the thread type of the main shaft of the equipment without influencing the precision and the use.

2. Most of the existing tool fixtures for processing various lenses use vacuum adsorption, but the polishing equipment does not have the performance of vacuum adsorption, most of mechanical equipment cannot be used, and the polishing fixture solves the limited problem.

3. The thickness difference of the eccentric edge of the center of the lens processed by the tool is less than or equal to 0.005mm, the RMS value is less than or equal to 0.02 mu m, the diaphragm number can be controlled to be less than or equal to 0.5 diaphragm, PV is less than or equal to ¼ lambda, and the smoothness is less than or equal to 30-20.

4. After the tool parts are clamped, the stress of the whole lens can be uniform, the lens stress can not be changed due to local stress, and the parameters of N, delta N, PV, B, X and the like of the processed lens are influenced due to nonuniform stress.

The tool has very convenient requirements for clamping the lens, the pressure is not controlled as well as vacuum adsorption, the lens is exploded when the pressure is too high, and the lens is easy to fall off when the pressure is too low, so that the lens is scrapped; the pressure change and verification are carried out every time products with different specifications are replaced.

Claims

1. The utility model provides a heavy-calibre lens polishing clamp, its characterized in that, is including the convex surface or the concave surface anchor clamps body that have certain radian, anchor clamps body both ends set up the right angle draw-in groove, and the middle part sets up the air guide hole, and the air guide hole top sets up the lug, sets up the recess that corresponds with the compressed air rifle in the lug, the anchor clamps body passes through right angle draw-in groove fixedly connected with shock attenuation holding ring, is provided with the adsorption pad under the shock attenuation holding ring, and the adsorption pad is gone up and is adsorbed there is the lens.

2. The large-aperture lens polishing fixture as claimed in claim 1, wherein the arc of the fixture body is 150-160 °.

3. A large aperture lens polishing fixture according to claim 1 or 2, wherein said lens is a silicon lens.

4. The large aperture lens polishing fixture of claim 3, wherein the adsorption pad is a wax-free adsorption pad.

5. The large-aperture lens polishing fixture of claim 1, wherein the shock-absorbing positioning ring is made of plastic steel.