CN212886757U - Lens polishing clamp, jig and device - Google Patents

Abstract

The application relates to the field of optical polishing, in particular to a lens polishing clamp, a jig and a device. The clamp comprises a butting part, a hemispherical part and a plurality of accommodating grooves. The accommodating grooves are formed in the spherical surface of the hemispherical part, and the positions of the accommodating grooves are within the hemispherical area of the spherical surface; the plurality of accommodating grooves surround the hemispherical part by taking the axis of the hemispherical part as the center and are uniformly distributed. The clamp has high polishing efficiency, uniform stress on each area of the surface of the lens and good polishing effect. The lens is installed and is polished at the sphere, can reduce the focus of lens, and the area of contact of lens and polishing ware in the increase polishing operation to be difficult to influence the curvature radius of product, guarantee polishing quality stability. Through using the axial lead of a plurality of storage tanks with the hemisphere portion as the center and encircle round and evenly distributed, can guarantee that a plurality of lenses polish uniformly, guarantee the polishing effect of each lens when improving polishing efficiency.

Description

Lens polishing clamp, jig and device

Technical Field

The application relates to the field of optical polishing, in particular to a lens polishing clamp, a jig and a device.

Background

The polishing requirements of optical lenses are high, especially for biconvex lens products, which makes the polishing of such lenses more difficult.

Currently, such lenses are polished by single-piece processing, i.e., polishing one lens at a time.

Conventional monolithic polishing operations are: directly place a lens in the polishing ware, the pressure shaft directly supports and presses on the lens, and the rotatory in-process of pressure shaft drives the lens and polishes in the polishing ware. In other conventional operations, a lens is embedded in a casing made of PVC, and then placed in a polishing dish, a pressure shaft directly abuts against the casing made of PVC, and the lens in the casing is driven to polish in the polishing dish in the process of rotation of the pressure shaft.

However, these conventional single polishing methods have low processing efficiency and seriously affect the production efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a lens polishing clamp, a jig and a device, which aim at improving the problem of low polishing efficiency of the existing lens.

In a first aspect, the present application provides a lens polishing jig comprising:

the abutting part is provided with an abutting surface and a connecting surface, and the abutting surface is used for abutting against the rotating shaft;

the bottom surface of the hemispherical part is connected with the connecting surface of the abutting part; the size of the spherical surface of the semispherical part does not exceed that of the semispherical surface; and

the accommodating grooves are formed in the spherical surface of the hemispherical part, and the positions of the accommodating grooves are within the hemispherical area of the spherical surface; the plurality of accommodating grooves surround the hemispherical part by taking the axis of the hemispherical part as the center and are uniformly distributed.

This lens polishing anchor clamps has greatly improved polishing efficiency owing to set up a plurality of storage tanks. And set up in the hemisphere face region of sphere through setting up a plurality of storage tanks, after placing the lens in the storage tank, can well cooperate with the polishing ware, guarantee that every lens on the hemisphere face all polishes for each regional atress in lens surface is even, guarantees polishing effect. And for present monolithic polishing mode, the lens is installed and is polished at the sphere, increases the area of contact of lens and polishing ware in the polishing operation, so can reduce the focus of lens to be difficult to influence the radius of curvature of product, guarantee polishing quality stability. Through using the axial lead of a plurality of storage tanks with the hemisphere portion as the center and encircle round and evenly distributed, can guarantee that a plurality of lenses polish uniformly, guarantee the polishing effect of each lens when improving polishing efficiency.

In other embodiments of the present application, an included angle between a center line of each of the accommodating grooves and an axis line of the hemispherical portion is 40 to 50 °.

The included angle between the central line of each accommodating groove and the axial lead of the hemispherical part is 40-50 degrees, so that the processing gravity center can be reduced, the contact area between the lens and the polishing dish in the polishing operation is increased, and the stress of each area on the surface of the lens is uniform.

In another embodiment of the present application, the number of the receiving grooves is three, and an included angle between projections of central lines of every two adjacent receiving grooves on the bottom surface is 120 °.

Through being three with the quantity of storage tank, can go up 3 lenses of installation simultaneously in lens polishing anchor clamps to polish 3 lenses simultaneously, and then greatly improve polishing efficiency. The included angle between the central lines of every two accommodating grooves is 120 degrees, so that the three accommodating grooves can be uniformly distributed on the hemispherical part, and the stress uniformity of each lens during polishing is further ensured.

In other embodiments of the present application, the abutting portion is in a circular truncated cone shape, and the abutting surface is smaller than the bottom surface of the hemispherical portion; the slope angle between the abutting surface and the bottom surface of the hemispherical part is 120-150 degrees.

The abutting part is in a round table shape, and the abutting surface is smaller than the bottom surface of the hemispherical part, so that the abutting effect of the external rotating shaft and the abutting surface can be enhanced, and the rotating effect is improved.

In other embodiments of the present application, the lens polishing fixture includes an inner fixture housing, the inner fixture housing can be installed in the accommodating groove, the inner fixture housing has a cavity and an open end, the cavity is used for accommodating the lens, and the lens can protrude out of the open end.

Through setting up the inside casing, can place the lens in the inside casing, then install in the storage tank again, polish to can protect the lens.

In other embodiments of the present application, the inside of the accommodating groove is stepped, and an inner diameter of the groove bottom of the accommodating groove is smaller than an inner diameter of the groove opening of the accommodating groove;

the outer diameter of the inner clamp shell is less than or equal to the inner diameter of the groove opening of the accommodating groove; when the outer diameter of the inner clamp shell is smaller than the inner diameter of the notch of the containing groove, the difference is within 0.1 mm.

Through the internal diameter with the external diameter less than or equal to the notch department of storage tank of internal clamp shell, can install the internal clamp shell in the storage tank firmly.

In other embodiments of the present application, the lens polishing fixture includes a gasket, the gasket can be placed in the accommodating groove, and a diameter of the gasket is equal to an inner diameter of the accommodating groove; the bottom wall of the inner clamp shell can abut against the gasket.

Through setting up the packing ring, avoid the tank bottom of interior anchor clamps shell direct contact storage tank, reduce the rigidity collision, play the effect of buffering.

In a second aspect, the present application provides a lens polishing jig, including the lens polishing fixture; and

polishing a dish; the polishing dish is provided with a groove; the size of the groove does not exceed the hemispherical surface;

the groove is used for accommodating a hemispherical part of the lens polishing clamp, and the hemispherical part can swing in the groove.

The lens polishing jig can effectively improve the polishing efficiency and the polishing effect.

In other embodiments of the present application, the hemispherical portion swings within the groove at an angle in a range of 1 to 5 °.

Within this swing range, the polishing effect can be ensured.

In a third aspect, the present application provides a lens polishing apparatus, including the lens polishing jig;

the polishing device comprises a machine table, a polishing disc, a polishing head and a polishing head, wherein the polishing disc is arranged on the machine table; and

and the rotating shaft is used for abutting against the abutting part of the lens polishing clamp and driving the lens polishing clamp to rotate.

This lens burnishing device has greatly improved polishing efficiency owing to set up a plurality of storage tanks, and polishing effect is good moreover.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a first view angle of a lens polishing fixture according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a second view angle of the lens polishing fixture provided in the embodiment of the present application;

FIG. 3 is a schematic structural diagram of an inner clamp shell according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a gasket provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a polishing dish according to an embodiment of the present disclosure.

Icon: 100-a lens polishing fixture; 110-a holding portion; 111-a holding surface; 120-a hemispherical portion; 121-bottom surface; 122-sphere; 130-a receiving groove; 131-groove bottom; 132-a notch; 140-inner clamp shell; 141-a cavity; 142-an open end; 143-bottom wall; 150-a gasket; 210-a polishing dish; 211-grooves; 212-axis.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the orientations and positional relationships conventionally understood by those skilled in the art are for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting to the present application.

Referring to fig. 1 to 4, the present disclosure provides a lens polishing fixture 100, including: the supporting portion 110, the hemispherical portion 120 and the plurality of receiving grooves 130.

Further, the abutting portion 110 has an abutting surface 111 and a connecting surface (not shown), and the abutting surface 111 is used for abutting against an external rotation shaft. Thereby when the axis of rotation rotated, can drive lens polishing anchor clamps 100 and rotate, at the pivoted in-process, realize the polishing to the lens.

Further, the bottom surface 121 of the hemispherical portion 120 is connected to the connecting surface of the abutting portion 110. By connecting the hemispherical portion 120 to the supporting portion 110, the supporting portion 110 can rotate along with the external rotation shaft, so as to drive the hemispherical portion 120 to rotate.

In the illustrated embodiment, the hemispherical portion 120 is integrally formed with the holding portion 110. When the supporting portion 110 and the hemispherical portion 120 are integrally formed, the connecting surface and a portion of the bottom surface 121 are hidden inside the structure.

Further, a plurality of accommodating grooves 130 for accommodating lenses are formed on the spherical surface 122. And the plurality of receiving grooves 130 are formed within a hemispherical region of the spherical surface 122.

Through set up a plurality of storage tanks 130 in the hemisphere face region of sphere 122, after placing the lens in storage tank 130, can well cooperate with the polishing ware, guarantee that every lens on the hemisphere face all polishes for each regional atress in lens surface is even, guarantees polishing effect. And can be increased

Further, the mirror polishing jig 100 can be suitably used for polishing a lenticular lens, in particular, a lenticular lens which can satisfy the condition of phi/R value ≦ 0.7. The inventor finds that the double-sided convex lens has the characteristics of thick thickness and small curvature radius, in the traditional single-chip polishing mode at present, the polishing gravity center is higher due to the thickness of the double-sided convex lens and the thickness of the shell, gravity is directly transmitted to the lens (or directly transmitted to the lens through the shell) after the pressure shaft is pressed down in the processing process, and finally the gravity is completely reflected on one lens, so that the AS of the lens is easy to change, the curvature radius of a product is influenced, and the product quality is extremely unstable.

The position that this application was seted up a plurality of storage tanks 130 is within the hemisphere face region of sphere 122, has designed into the multi-disc by original traditional monolithic, so along with the increase of lifting surface (the pressure axis is not direct action on single lens, but acts on and supports portion 110), consequently, can reduce the product focus in the polishing process effectively to be difficult to influence the radius of curvature of product, guarantee polishing quality stability.

It should be noted that, when the accommodating groove 130 is opened at a position beyond the hemispherical surface, after the lens is placed in the accommodating groove 130, good polishing cannot be performed (complete contact between the lens and the polishing dish cannot be ensured, it is not easy to make all areas on the surface of the lens uniformly stressed, the polishing effect is poor, the efficiency is low), and the practical operability is not good.

In some embodiments of the present application, the spherical surface of the hemispherical portion 120 is set to be hemispherical or close to hemispherical.

By setting the spherical surface 122 of the hemispherical portion 120 to be hemispherical or close to hemispherical, it is easier to provide the plurality of receiving grooves 130 on the spherical surface. And the processing is more convenient.

Further, the plurality of receiving grooves 130 are uniformly distributed around the axis of the hemispherical portion 120.

By surrounding the plurality of accommodating grooves 130 with the axial lead of the hemispherical portion as the center and uniformly distributing the grooves around one circle, each lens can be guaranteed to be uniformly polished, and the polishing efficiency is improved.

Further, in some embodiments of the present disclosure, an angle α between a center line of each of the receiving grooves 130 and an axis of the hemispherical portion 120 is 40 to 50 °.

The included angle alpha between the central line of each accommodating groove 130 and the axial line of the hemispherical part 120 is 40-50 degrees, the angle function of the included angle alpha is to ensure the uniformity of the distance between multiple holes, the contact area between the lens and a polishing dish in the polishing operation is increased due to the multiple point contact, and compared with a single-chip processing mode, the three-chip processing is more beneficial to reducing the gravity center of the lens in the processing, so that the stress of each area on the surface of the lens is uniform.

Further optionally, an included angle α between a center line of each of the receiving grooves 130 and an axis of the hemispherical portion 120 is 42 to 48 °.

Further optionally, an included angle α between a center line of each of the receiving grooves 130 and an axis of the hemispherical portion 120 is 44 to 47 °.

Illustratively, the angle α between the center line of each receiving groove 130 and the axis of the hemispherical portion 120 is 44.5 °, 45 °, 45.5 °, 46 °, and 46.5 °.

Further, in some embodiments of the present application, referring to fig. 2, the number of the receiving grooves 130 is three, and an included angle β between projections of central lines of every two receiving grooves 130 on the bottom surface 121 is 120 °.

By arranging the receiving grooves 130 three in number, 3 lenses can be simultaneously mounted on the lens polishing jig 100, and 3 lenses can be simultaneously polished, thereby greatly improving the polishing efficiency.

Further, the included angle β between the center lines of every two accommodating grooves 130 is 120 °, so that the three accommodating grooves 130 can be uniformly distributed on the hemispherical portion 120, and the uniformity of stress during polishing of each lens can be ensured.

Furthermore, the abutting portion 110 is in a circular truncated cone shape, and the abutting surface 111 is smaller than the bottom surface 121 of the hemispherical portion 120; the slope angle delta between the abutting surface 111 and the bottom surface 121 of the hemispherical portion 120 is 120-150 degrees.

By forming the abutting portion 110 in a circular truncated cone shape, the abutting surface 111 is smaller than the bottom surface 121 of the hemispherical portion 120, so that the abutting effect between the external rotating shaft and the abutting surface 111 can be enhanced, and the rotating effect can be improved.

Further, the slope angle delta between the abutting surface 111 and the bottom surface 121 of the hemispherical portion 120 is 125-145 deg.

Further optionally, the slope angle δ between the abutting surface 111 and the bottom surface 121 of the hemispherical portion 120 is 130-140 °.

Illustratively, the slope angle δ between the abutting surface 111 and the bottom surface 121 of the hemispherical portion 120 is 131 °, 132 °, 133 °, 134 °, 135 °, 136 °, 137 °, 138 °, 139 °, or 140 °.

In some embodiments of the present disclosure, the notch of the accommodating groove 130 is circular, so that the processing is easier and the versatility is stronger.

Further, the inside of the receiving groove 130 is stepped, and an inner diameter of the receiving groove 130 at the groove bottom 131 is smaller than an inner diameter of the receiving groove 130 at the notch 132.

The interior of the receiving groove 130 is set to be step-shaped, which is beneficial to firmly installing the lens in the receiving groove 130.

Further, referring to fig. 1, in the illustrated embodiment, the inside of the receiving groove 130 is stepped in two steps, the inner diameter of the groove bottom 131 is smaller, the inner diameter of the notch 132 is larger, and the height of the smaller area is far smaller than that of the area with the larger diameter. Thus, the lens can be effectively fixed in the accommodating groove 130, and the lens is prevented from directly contacting with the bottom wall of the groove.

Further, referring to fig. 3, the lens polishing jig 100 includes an inner jig housing 140, the inner jig housing 140 can be installed in the accommodating groove 130, the inner jig housing 140 has a cavity 141 and an open end 142, the cavity 141 is used for accommodating a lens, and the lens can protrude from the open end 142.

Through setting up interior anchor clamps shell 140, can place the lens in interior anchor clamps shell 140, then install in storage tank 130 again, polish to can protect the lens.

In some embodiments of the present disclosure, the material of the inner clamp housing 140 is selected from a polymer material, such as PVC, so as to better protect the lens.

Further, the outer diameter of the inner clamp case 140 is equal to or less than the inner diameter of the receiving groove 130 at the notch 132, and when the outer diameter of the inner clamp case 140 is less than the inner diameter of the receiving groove 130 at the notch 132, the difference is within 0.1 mm.

By making the outer diameter of the inner clamp case 140 equal to or less than the inner diameter of the receiving groove 130 at the notch 132, the inner clamp case 140 can be stably mounted in the receiving groove 130.

Further, by making the outer diameter of the inner clamp case 140 smaller than the inner diameter of the receiving groove 130 at the notch 132 by a difference within 0.1mm, the inner clamp case 140 can be further stably mounted in the receiving groove 130.

Further, when the outer diameter of the inner clamp case 140 is smaller than the inner diameter at the notch 132 of the receiving groove 130, the difference is 0.02mm, 0.05mm, 0.06mm, 0.08mm, or 0.1 mm.

In the illustrated example, the inner holder housing 140 has a substantially cylindrical shape, matching the shape of the receiving groove 130, which facilitates not only installation but also processing.

Further, referring to fig. 4, the lens polishing jig 100 includes a gasket 150, the gasket 150 being capable of being placed in the receiving groove 130, a diameter of the gasket 150 being equal to or smaller than an inner diameter at the groove bottom 131 of the receiving groove 130; the bottom wall 143 of the inner clamp shell 140 abuts the gasket 150.

By arranging the gasket 150, the inner clamp shell 140 is prevented from directly contacting the groove bottom 131 of the accommodating groove 130, rigid collision is reduced, and a buffering effect is achieved.

Further, in the illustrated embodiment, the washer 150 is in the shape of an O-ring. Through setting up the O ring, when polishing, can play the cushioning effect at the diapire 143 of inner clamp shell 140 for the buffering is more even.

Some embodiments of the present application also provide a lens polishing jig.

Further, the lens polishing jig includes the lens polishing fixture 100 and the polishing dish 210 in any one of the above embodiments.

Referring to fig. 5, further, the polishing dish 210 has a groove 211; the size of the groove 211 does not exceed the hemispherical surface.

Further, the groove 211 is used for accommodating the hemispherical portion 120 of the lens polishing jig 100, and the hemispherical portion 120 can swing within the groove 211.

By setting the size of the groove 211 as described above not to exceed the hemispherical surface, it can be ensured that the hemispherical portion 120 is more easily placed in the groove 211, and that each lens on the spherical surface 122 of the hemispherical portion 120 is uniformly ground.

Further, the angle of the semi-spherical portion 120 swinging in the groove 211 is in the range of 1 to 5 °.

Further alternatively, the angle of the semi-spherical portion 120 swinging in the groove 211 is in the range of 1.5 to 4.5 °.

Further alternatively, the angle of the semi-spherical portion 120 swinging in the groove 211 is in the range of 2 to 4 °.

Illustratively, the angle at which the above-described hemispherical portion 120 swings within the groove 211 is 2.5 °, 3 °, 3.5 °, or 4.5 °.

Some embodiments of the present application further provide a lens polishing apparatus, including the lens polishing jig provided in any one of the foregoing embodiments, a machine table (not shown), and a rotating shaft (not shown).

Further, the polishing dish 210 is mounted on a machine table, and the machine table is used for driving the polishing dish 210 to swing.

Further, the rotating shaft is used for abutting against the abutting portion 110 of the lens polishing clamp 100 and driving the lens polishing clamp 100 to rotate.

Illustratively, the lens polishing apparatus may be used by: the shaft 212 of the polishing dish 210 is mounted on a machine. The machine may be a swinging machine commonly used in the art, so as to drive the polishing dish 210 to swing. Further, the lens is mounted in the inner fixture housing 140, the gasket 150 is mounted in the receiving groove 130, the inner fixture housing 140 is mounted in the receiving groove 130, the assembled lens polishing fixture 100 is mounted in the polishing dish 210, the supporting portion 110 of the lens polishing fixture 100 is abutted against the rotating shaft, the lens polishing fixture 100 is driven to rotate in the receiving groove 130 under the rotation of the rotating shaft, and the lens polishing fixture 100 is driven to swing in the receiving groove 130 under the swing of the machine table, so that the lens mounted on the lens polishing fixture 100 is polished in the receiving groove 130.

This lens burnishing device has greatly improved polishing efficiency owing to set up a plurality of storage tanks 130, and polishing effect is good moreover.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A lens polishing jig, comprising:

the abutting part is provided with an abutting surface and a connecting surface, and the abutting surface is used for abutting against the rotating shaft;

the bottom surface of the semi-spherical part is connected with the connecting surface of the abutting part; and

the accommodating grooves are formed in the spherical surface of the hemispherical part, and the positions of the accommodating grooves are within the hemispherical area of the spherical surface; the plurality of accommodating grooves surround the hemispherical part by taking the axis of the hemispherical part as the center and are uniformly distributed.

2. The lens polishing jig of claim 1,

the included angle between the center line of each accommodating groove and the axial lead of the hemispherical part is 40-50 degrees.

3. The lens polishing jig of claim 1,

the number of the accommodating grooves is three, and the included angle between the projections of the central lines of every two adjacent accommodating grooves on the bottom surface is 120 degrees.

4. The lens polishing jig according to any one of claims 1 to 3,

the abutting part is in a round table shape, and the abutting surface is smaller than the bottom surface of the hemispherical part; the slope angle between the abutting surface and the bottom surface of the hemispherical part is 120-150 degrees.

5. The lens polishing jig of claim 1,

the lens polishing clamp comprises an inner clamp shell, the inner clamp shell can be installed in the accommodating groove, the inner clamp shell is provided with a cavity and an opening end, the cavity is used for accommodating a lens, and the lens can protrude out of the opening end.

6. The lens polishing jig of claim 5,

the inside of the containing groove is step-shaped, and the inner diameter of the bottom of the containing groove is smaller than the inner diameter of the notch of the containing groove;

the outer diameter of the inner clamp shell is smaller than or equal to the inner diameter of the containing groove at the notch of the containing groove; when the outer diameter of the inner clamp shell is smaller than the inner diameter of the notch of the containing groove, the difference is within 0.1 mm.

7. The lens polishing jig of claim 6,

the lens polishing clamp comprises a gasket, the gasket can be placed in the accommodating groove, and the diameter of the gasket is smaller than or equal to the inner diameter of the accommodating groove at the groove bottom; the bottom wall of the inner clamp shell can abut against the gasket.

8. A lens polishing jig, characterized by comprising the lens polishing jig of any one of claims 1 to 7; and

polishing a dish; the polishing dish is provided with a groove; the size of the groove does not exceed the hemispherical surface;

the groove is used for accommodating a hemispherical part of the lens polishing clamp, and the hemispherical part can swing in the groove.

9. The lens polishing jig according to claim 8,

the angle of the semi-sphere swinging in the groove is within the range of 1-5 degrees.

10. A lens polishing apparatus comprising the lens polishing jig according to claim 8 or 9;

the polishing tool is arranged on the machine table, and the machine table is used for driving the polishing tool to swing; and

and the rotating shaft is used for abutting against the abutting part of the lens polishing clamp and driving the lens polishing clamp to rotate.

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