阅读说明：本技术 一种双凹镜研磨抛光上治具 (Double-concave mirror grinding and polishing upper jig ) 是由 颜刘兵 査家明 石成 汪晓阳 景海华 王伟 王朔 于 2019-10-30 设计创作，主要内容包括：本发明公开一种双凹镜研磨抛光上治具,属于双凹镜研磨抛光技术领域。所述双凹镜研磨抛光上治具包括装夹头和连接体；所述装夹头顶端开有圆槽,所述圆槽底面为圆弧形凸台；所述连接体中设有若干条喷吹气道,所述喷吹气道贯穿所述连接体和所述装夹头,利用所述喷吹气道中喷出的气体将双凹透镜吹落至下端磨头上,机械手直接抓取即可,能够实现全自动化生产,大大提高生产效率；所述装夹头侧壁均匀分布有若干条斜槽,每个所述斜槽上均开有排泄孔,用于排出边缘的抛光粉,有效避免所述双凹透镜边缘出现亚斯畸变；所述连接体侧壁开有两条密封槽,末端中心开有定位锥槽；所述密封槽中放置有O型圈,能够与外部上轴快速定位并进行连接。(The invention discloses an upper jig for grinding and polishing a double concave mirror, and belongs to the technical field of grinding and polishing of double concave mirrors. The double-concave mirror grinding and polishing upper jig comprises a clamping head and a connector; the top end of the clamping head is provided with a circular groove, and the bottom surface of the circular groove is provided with an arc-shaped boss; the connecting body is internally provided with a plurality of blowing air passages, the blowing air passages penetrate through the connecting body and the clamping head, the biconcave lens is blown down onto the lower end grinding head by utilizing the gas sprayed out of the blowing air passages, and the mechanical arm directly grasps the biconcave lens, so that full-automatic production can be realized, and the production efficiency is greatly improved; a plurality of inclined grooves are uniformly distributed on the side wall of the clamping head, and each inclined groove is provided with a discharge hole for discharging polishing powder at the edge, so that the inferior distortion at the edge of the biconcave lens is effectively avoided; the side wall of the connecting body is provided with two sealing grooves, and the center of the tail end of the connecting body is provided with a positioning conical groove; an O-shaped ring is arranged in the sealing groove and can be quickly positioned and connected with an external upper shaft.)

1. The double-concave mirror grinding and polishing upper jig is characterized by comprising a clamping head (1) and a connecting body (2), wherein the connecting body (2) is positioned at the tail end of the clamping head (1) and is used for connecting an external upper shaft;

a circular groove (11) is formed in the top end of the clamping head (1), and a circular arc-shaped boss (12) is formed in the bottom surface of the circular groove (11);

a plurality of blowing air passages (3) are arranged in the connecting body (2), and the blowing air passages (3) penetrate through the connecting body (2) and the clamping head (1);

the side wall of the clamping head (1) is uniformly distributed with a plurality of inclined grooves (6) for discharging the polishing powder at the edge.

2. The double-concave mirror grinding and polishing upper jig as claimed in claim 1, wherein the side wall of the connecting body (2) is provided with two sealing grooves (4), and an O-ring is placed in each sealing groove (4) and can be connected with an external upper shaft.

3. The double-concave mirror grinding and polishing upper jig as claimed in claim 1, wherein a positioning taper groove (5) is further formed in the center of the tail end of the connecting body (2) so that the connecting body (2) and an external upper shaft can be quickly positioned.

4. The double-concave mirror grinding and polishing upper jig according to claim 3, wherein three blowing air passages (3) are provided and uniformly surround the positioning cone groove (5), and the blowing air passages (3) are connected with an external blowing mechanism.

5. The double-concave mirror grinding and polishing upper jig according to claim 1, wherein the double-concave lens (7) is placed in the circular groove (11), and the depth of the circular groove (11) is half of the thickness of the edge of the double-concave lens (7).

6. The double-concave mirror grinding and polishing upper jig according to claim 5, characterized in that a damping cloth (8) is arranged between the double-concave lens (7) and the circular arc-shaped boss (12), the damping cloth (8) is fixedly connected to the circular arc-shaped boss (12), and the double-concave lens (7) is adsorbed on the surface of the damping cloth (8) through negative pressure.

7. The double-concave mirror grinding and polishing upper jig according to claim 1, wherein the inclined groove (6) is provided with a chip removal hole (61), the chip removal hole (61) penetrates through the clamping head (1), and the polishing powder and the grinding chips are discharged by using a centrifugal force.

8. The double-concave mirror grinding and polishing upper jig according to claim 1, wherein eight inclined grooves (6) are uniformly distributed on the clamping head (1).

Technical Field

The invention relates to the technical field of double-concave mirror grinding and polishing, in particular to an upper double-concave mirror grinding and polishing jig.

Background

In recent years, with the technical progress in the optical-mechanical-electrical field, new products such as various scanners, projectors, digital cameras, and the like have been increasingly demanded in terms of optical lenses and required to have higher precision. Therefore, the productivity is continuously improved, and the development of automation is the development subject which must be searched by the optical cold processing industry. By aligning the sphere center lower hem grinding and polishing machine and additionally arranging a special robot or a mechanical arm, the problem of workpiece transfer in each processing cavity can be effectively solved, hands are liberated, the production cost is reduced, and the production efficiency is improved. In the grinding and polishing process of spherical lenses, the quality of the upper jig (suitable and unsuitable, stable and unstable) determines whether the aperture and the Yasi of the lens can be processed, in other words, the yield of good lens products is absolutely influenced. Through the special tool of pertinence design, can the main shaft structure of full-automatic accurate centre of sphere lower hem grinding and polishing machine after the adaptation transformation better, can simulate the state of people's hand operation as far as possible moreover, avoid the bad factor in the automatic machining process.

The existing traditional grinding and polishing machine for the lower hem of the quasi-sphere center has the following problems:

1. the automatic lower swinging machine can be convenient for a mechanical arm to take, place and replace the lens only by ensuring that the upper jig is connected with the upper shaft, and the jig cannot be connected with the upper shaft in the prior art;

2. in the prior art, the jig and the lens are separated by manual operation, so that the production efficiency is low;

3. for the biconcave lens with a concave surface and without a platform, when the biconcave lens is processed, polishing powder is easily accumulated at the edge of the lens in the upper jig under the action of centrifugal force, so that the Asia-Si distortion is caused.

Disclosure of Invention

The invention aims to provide a double-concave mirror grinding and polishing upper jig, which solves the problems that the existing universal upper jig cannot be connected with an upper shaft, the efficiency of manually separating a lens is low, and polishing powder is easy to accumulate at the edge of the lens to cause Asian distortion.

In order to solve the technical problem, the invention provides a double-concave mirror grinding and polishing upper jig which comprises a clamping head and a connecting body, wherein the connecting body is positioned at the tail end of the clamping head and is used for connecting an external upper shaft;

the top end of the clamping head is provided with a circular groove, and the bottom surface of the circular groove is provided with an arc-shaped boss;

a plurality of blowing air passages are arranged in the connecting body, and the blowing air passages penetrate through the connecting body and the clamping head;

and a plurality of chutes are uniformly distributed on the side wall of the clamping head and used for discharging the polishing powder at the edge.

Optionally, the side wall of the connecting body is provided with two sealing grooves, and an O-ring is placed in each sealing groove and can be connected with an external upper shaft.

Optionally, a positioning taper groove is further formed in the center of the tail end of the connecting body, so that the connecting body and the external upper shaft can be quickly positioned.

Optionally, the number of the blowing air passages is three, the three blowing air passages uniformly surround the positioning conical groove, and the blowing air passages are connected with an external blowing mechanism.

Optionally, a biconcave lens is placed in the circular groove, and the depth of the circular groove is half of the thickness of the edge of the biconcave lens.

Optionally, damping cloth is arranged between the biconcave lens and the circular arc boss, the damping cloth is fixedly connected to the circular arc boss, and the biconcave lens is adsorbed on the surface of the damping cloth through negative pressure.

Optionally, the chute is provided with a chip removal hole, the chip removal hole penetrates through the clamping head, and polishing powder and grinding chips are discharged by using centrifugal force.

The invention provides a double-concave mirror grinding and polishing upper jig which comprises a clamping head and a connecting body, wherein the connecting body is positioned at the tail end of the clamping head and is used for connecting an external upper shaft; the top end of the clamping head is provided with a circular groove, and the bottom surface of the circular groove is provided with an arc-shaped boss; the connecting body is internally provided with a plurality of blowing air passages, the blowing air passages penetrate through the connecting body and the clamping head, the biconcave lens is blown down onto the lower end grinding head by utilizing the gas sprayed out of the blowing air passages, and the mechanical arm directly grasps the biconcave lens, so that full-automatic production can be realized, and the production efficiency is greatly improved; a plurality of inclined grooves are uniformly distributed on the side wall of the clamping head, and each inclined groove is provided with a discharge hole for discharging polishing powder at the edge, so that the inferior distortion at the edge of the biconcave lens is effectively avoided; the side wall of the connecting body is provided with two sealing grooves, and the center of the tail end of the connecting body is provided with a positioning conical groove; an O-shaped ring is arranged in the sealing groove and can be quickly positioned and connected with an external upper shaft.

Drawings

FIG. 1 is a schematic structural view of a double-concave mirror grinding and polishing upper fixture provided by the present invention;

FIG. 2 is a partial cross-sectional view of a double-concave mirror grinding and polishing upper fixture provided by the present invention;

FIG. 3 is a full sectional view of a double concave mirror grinding and polishing upper fixture provided by the present invention;

FIG. 4 is a full sectional view of the double concave mirror after clamping the double concave mirror by the upper jig for grinding and polishing the double concave mirror provided by the invention;

FIG. 5 is a top view of a double concave mirror grinding and polishing upper fixture provided by the present invention.

Detailed Description

The double concave mirror grinding and polishing upper jig provided by the invention is further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

The invention provides a double-concave mirror grinding and polishing upper jig, which comprises a clamping head 1 and a connecting body 2, wherein the connecting body 2 is positioned at the tail end of the clamping head 1 and is used for connecting an external upper shaft; a circular groove 11 is formed at the top end of the clamping head 1, and a circular arc-shaped boss 12 is arranged at the bottom surface of the circular groove 11; a plurality of blowing air passages 3 are arranged in the connecting body 2, and the blowing air passages 3 penetrate through the connecting body 2 and the clamping head 1; the side wall of the clamping head 1 is uniformly distributed with a plurality of inclined grooves 6 for discharging the polishing powder at the edge.

Specifically, as shown in fig. 4, damping cloth 8 is arranged between the biconcave lens 7 and the circular arc-shaped boss 12, the damping cloth 8 is fixedly connected to the circular arc-shaped boss 12, the biconcave lens 7 is adsorbed on the surface of the damping cloth 8 through negative pressure, and it is ensured that the biconcave lens 7 rotates with the chuck 1 when the lower concave surface of the biconcave lens 7 is polished by the lower end grinding head, but the speed is far less than the rotating speed of the lower end grinding head.

Further, with reference to fig. 1 to 4, two sealing grooves 4 are formed in the sidewall of the connecting body 2, and an O-ring is disposed in the sealing groove 4 and can be connected to an external upper shaft; the center of the tail end of the connecting body 2 is also provided with a positioning conical groove 5, so that the connecting body 2 and an external upper shaft can be quickly positioned, and the double-concave mirror grinding and polishing upper jig and the external upper shaft can be quickly positioned, connected and fixed by the structure; three blowing air passages 3 are uniformly arranged around the positioning conical groove 5, the blowing air passages 3 are connected with an external blowing mechanism, air sprayed out by the blowing mechanism passes through the blowing air passages 3, so that the biconcave lens 7 is separated from the damping cloth 8, the biconcave lens 7 falls on the lower end grinding head, and finally, the mechanical arm is used for grabbing and replacing, thereby realizing full-automatic production and improving the production efficiency; the inclined groove 6 is provided with a chip removal hole 61, the chip removal hole 61 penetrates through the clamping head 1, polishing powder and grinding chips are discharged by utilizing centrifugal force, and therefore the phenomenon that the polishing powder is accumulated on the edge of the biconcave lens 7 to cause subss distortion of the edge of the biconcave lens 7 can be effectively avoided.

Specifically, as shown in fig. 2 and 5, eight inclined grooves 6 are uniformly distributed on the clamping head 1, and the eight inclined grooves 6 are provided with eight chip removal holes 61, so that the polishing powder can be discharged timely to the maximum extent, and the asian distortion of the edge of the biconcave lens 7 can be avoided.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.