Micro lens milling, grinding, positioning and clamping jig

Abstract

The utility model discloses a micro lens milling, grinding, positioning and clamping jig, which belongs to the technical field of lens processing devices and comprises a chuck and a clamping seat, the upper end of the chuck is of a circular truncated cone-shaped structure, the lower end of the chuck is of a cylindrical structure, and the diameter of the upper end of the circular truncated cone-shaped structure at the upper end of the chuck is larger than that of the lower end of the chuck. A plurality of contraction grooves are formed in the upper end of the chuck, a movable supporting mechanism is arranged in the clamping hole of the chuck, the clamping seat comprises a seat body and a connecting sleeve, a conical surface is arranged on the inner side of the right end of the connecting sleeve, and matched threads are arranged on the inner side of the left end of the connecting sleeve and the lower end of the chuck. By arranging the movable supporting mechanism, the position of the supporting mechanism can be adjusted according to requirements, so that the lower end of the lens is supported, the extension amount of the lens extending out of the clamping hole is controlled, the clamping hole is of a through hole structure, and the situation that the clamping hole back chipping difficulty is high in the chuck manufacturing process can be avoided; and the condition that the lens is cracked when the lens is clamped by the chuck is effectively avoided.

Description

Technical Field

[0001] The utility model discloses a micro lens milling, grinding, positioning and clamping fixture, belonging to the technical field of lens processing devices. Background Art

[0002] With the development of science and technology and the progress of society, people use optical products more and more frequently and in greater quantities, and their requirements for optical products are also gradually increasing. Microlenses are widely used in various high-end optical instruments due to their wide range of transmittance and low refractive index. Milling is an optical lens processing process that can eliminate surface holes left by the previous cutting, meet the surface roughness requirements, surface error, and center thickness control, and is a very important process in the processing process.

[0003] At present, in the milling and grinding process of cylindrical microlenses, since the lens has no elasticity and is not easy to fix due to its curved surface, a specific metal chuck is required to clamp and position it during the milling and grinding process. The clamping hole on the existing metal chuck used to clamp the microlens also needs to be drilled to a smaller size due to the size and clamping depth of the microlens. The smaller clamping hole makes the metal chuck difficult to manufacture, and the clamping hole is prone to not being cleaned thoroughly during the manufacturing process, which leads to the burrs remaining in the clamping hole when the metal chuck clamps the lens, which easily causes hard damage to the lens, resulting in the edge collapse and cracking of the lens.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] The utility model aims to solve the above problems and provide a micro lens milling positioning clamping fixture, which has the effect of stably clamping the lens to prevent the lens from cracking.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme, including a chuck and a chuck seat, the upper end of the chuck is a truncated cone-shaped structure and the lower end is a cylindrical structure, the upper end of the truncated cone-shaped structure at the upper end of the chuck has a larger diameter than the lower end, a circular chuck hole is opened through the center of the chuck, a plurality of contraction grooves are opened on the upper end of the chuck, a movable supporting mechanism is arranged in the chuck hole, the chuck seat includes a seat body and a connecting sleeve, a conical surface is arranged on the inner side of the right end of the connecting sleeve, and matching threads are arranged on the inner side of the left end of the connecting sleeve and the lower end of the chuck.

[0007] By adopting the above technical scheme, a clamping hole is provided for placing the lens, and the movable supporting mechanism enables the position to be adjusted according to the demand, and the lower end of the lens is supported to control the extension amount of the lens from the clamping hole. The structure of the clamping hole as a through hole effectively avoids the high difficulty of root cleaning in the manufacturing process of the chuck, thereby avoiding the lens from cracking when the chuck clamps the lens. When the lower end of the chuck is inserted from the right end of the connecting sleeve of the clamp seat, the truncated cone structure at the upper end of the chuck is squeezed by the conical surface of the right end of the connecting sleeve, and the contraction groove provided at the upper end of the chuck makes the truncated cone structure at the upper end of the chuck converge toward the center of the clamping hole when being squeezed, thereby clamping and fixing the lens placed in the clamping hole, and then the chuck is fixed by the threads at the lower end of the chuck and the left end of the connecting sleeve, which ensures that the lens will not crack when clamped while improving the convenience of lens clamping.

[0008] Preferably, the supporting mechanism includes a push rod and a threaded seat, the lower end of the chuck is provided with a groove connected to the clamping hole, the threaded seat can be rotatably arranged in the groove, the threaded seat and the groove are both provided with matching threads, the push rod can be movably arranged in the clamping hole and the lower end extends into the groove and is connected to the upper end of the threaded seat.

[0009] By adopting the above technical solution, the setting of the push rod can stably support the lower end of the lens, and through the setting of the threaded seat and the groove, when the threaded seat is rotated, the threaded seat can move up and down under the action of the threaded seat and the inner thread of the groove, thereby driving the push rod to move up and down, and then adjusting the position of the push rod to control the extension amount of the lens, thereby improving the versatility of the chuck.

[0010] Preferably, the clamp seat is provided with a bearing sleeve on the outside of the connecting sleeve, and the connecting sleeve is arranged in the bearing sleeve.

[0011] By adopting the above technical solution and setting the bearing sleeve, the connecting sleeve can be rotated, thereby driving the chuck installed in the connecting sleeve to rotate, so that the chuck can hold the lens for milling processing.

[0012] Preferably, a plurality of the shrinkage grooves are communicated with the clamping hole.

[0013] By adopting the above technical solution, the structure in which the shrinkage groove is connected to the clamping hole not only increases the shrinkage of the truncated cone structure at the upper end of the clamp, but also facilitates taking the lens out of the clamping hole.

[0014] Preferably, the chuck is provided with an elastic coating in the chuck hole.

[0015] By adopting the above technical solution, the elastic coating in the clamping hole can reduce the wear of the microlens that may occur during the clamping process, and further prevent the lens from being cracked when the clamp is clamping the lens.

[0016] Preferably, a connecting buckle is provided at the left end of the connecting sleeve, and the connecting sleeve is connected to the motor via the connecting buckle.

[0017] By adopting the above technical solution and through the design of the connecting buckle, the motor can be conveniently connected to the fixture, providing greater operational flexibility.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] First, the movable support mechanism can adjust its position according to the needs, so as to support the lower end of the lens and control the extension amount of the lens from the clamp hole. The structure of the clamp hole as a through hole can avoid the high difficulty of cleaning the clamp hole during the manufacturing process of the clamp, and effectively avoid the lens from cracking when the clamp is clamping the lens;

[0020] Secondly, the design of the contraction groove allows the chuck to be easily expanded or contracted, which is convenient for loading and unloading the microlens and improves work efficiency;

[0021] Thirdly, the elastic coating in the clamping hole can reduce the wear of the microlens during the clamping process, thereby further preventing the lens from cracking during clamping;

[0022] Fourthly, the lower end of the chuck and the left end of the connecting sleeve are provided with matching threads, which are convenient for disassembly and installation of the chuck. The left end of the connecting sleeve is also provided with a connecting buckle, which can be conveniently connected to the motor to realize automatic operation and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the chuck structure of a microlens milling positioning fixture;

[0024] Figure 2 A cross-sectional view of a chuck of a microlens milling positioning fixture;

[0025] Figure 3 A schematic diagram of a clamping seat structure of a microlens milling positioning fixture;

[0026] Figure 4 This is a schematic diagram of the connection between the chuck and the clamping seat of a microlens milling positioning fixture.

[0027] Figure numerals: 1, chuck; 2, clamp seat; 3, clamp hole; 4, shrinkage groove; 5, connecting sleeve; 6, push rod; 7, threaded seat; 8, groove; 9, bearing sleeve. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] A micro lens milling positioning fixture, such as Figure 1-Figure 4 As shown, it includes a chuck 1 and a chuck seat 2. The upper end of the chuck 1 is a truncated cone structure and the lower end is a cylindrical structure. The upper end diameter of the truncated cone structure of the upper end of the chuck 1 is larger than the lower end. A circular chuck hole 3 is provided through the center of the chuck 1. A plurality of shrinkage grooves 4 are provided on the upper end of the chuck 1. A movable supporting mechanism is provided in the chuck hole 3. The chuck hole 3 is used to place the lens, and the movable supporting mechanism can adjust the position according to the demand, so as to support the lower end of the lens and control the extension amount of the lens from the chuck hole 3. The structure of the chuck hole 3 as a through hole effectively avoids the high difficulty of root cleaning during the manufacturing process of the chuck 1, thereby avoiding the situation that the lens is cracked when the chuck 1 clamps the lens. The clamp seat 2 includes a seat body and a connecting sleeve 5, a conical surface is provided on the inner side of the right end of the connecting sleeve 5, and matching threads are provided on the inner side of the left end of the connecting sleeve 5 and the lower end of the chuck 1. When the lower end of the chuck 1 is inserted from the right end of the connecting sleeve 5 of the clamp seat 2, the truncated cone structure at the upper end of the chuck 1 is squeezed by the conical surface of the right end of the connecting sleeve 5, and the contraction groove 4 opened at the upper end of the chuck 1 makes the truncated cone structure at the upper end of the chuck 1 converge toward the center of the clamp hole 3 when being squeezed, thereby clamping and fixing the lens placed in the clamp hole 3, and then fixing the chuck 1 by the threads at the lower end of the chuck 1 and the left end of the connecting sleeve 5, thereby ensuring that the lens will not crack when clamped and improving the convenience of lens clamping.

[0030] The supporting mechanism includes a push rod 6 and a threaded seat 7. A groove 8 connected to the clamping hole 3 is provided at the lower end of the chuck 1. The threaded seat 7 can be rotatably arranged in the groove 8. Matching threads are provided in the threaded seat 7 and the groove 8. The push rod 6 can be movably arranged in the clamping hole 3 and the lower end extends into the groove 8 and is connected with the upper end of the threaded seat 7. The setting of the push rod 6 can stably support the lower end of the lens. Through the setting of the threaded seat 7 and the groove 8, when the threaded seat 7 is rotated, the threaded seat 7 can move up and down under the action of the threads in the threaded seat 7 and the groove 8, thereby driving the push rod 6 to move up and down, and then adjusting the position of the push rod 6 to control the extension amount of the lens, thereby improving the versatility of the chuck 1.

[0031] The clamp seat 2 is provided with a bearing sleeve 9 on the outside of the connecting sleeve 5, and the connecting sleeve 5 is arranged in the bearing sleeve 9. Through the arrangement of the bearing sleeve 9, the connecting sleeve 5 can be rotated, thereby driving the chuck 1 installed in the connecting sleeve 5 to rotate, so as to facilitate the chuck 1 to clamp the lens for milling processing. A plurality of shrinkage grooves 4 are connected with the clamping hole 3. The structure in which the shrinkage grooves 4 are connected with the clamping hole 3 not only increases the shrinkage of the truncated cone structure at the upper end of the chuck 1, but also facilitates the removal of the lens from the clamping hole 3. The chuck 1 is provided with an elastic coating in the clamping hole 3. The elastic coating in the clamping hole 3 can reduce the wear that may be generated in the microlens during the clamping process, and further prevent the chuck 1 from causing the lens to crack during the process of clamping the lens. A connecting buckle is provided at the left end of the connecting sleeve 5. The connecting sleeve 5 is connected to a motor through the connecting buckle. Through the design of the connecting buckle, the motor can be conveniently connected to the fixture, providing greater operational flexibility.

[0032] When the lens is to be milled, the threaded seat 7 is rotated according to the processing requirements to adjust the position of the push rod 6, and the extension amount of the lens is adjusted. Then the lens is placed in the clamping hole 3, and the lower end of the chuck 1 is inserted from the right end of the connecting sleeve 5 of the clamping seat 2, so that the upper end of the chuck 1 contracts under the extrusion of the connecting sleeve 5 to clamp the lens. After clamping is completed, the chuck 1 is fixed by the thread at the left end of the connecting sleeve 5, and finally the motor is started to drive the connecting sleeve 5 to rotate to perform milling on the lens.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A microlens milling positioning fixture, characterized in that: The invention comprises a chuck (1) and a chuck seat (2), wherein the upper end of the chuck (1) is a truncated cone-shaped structure and the lower end is a cylindrical structure, the upper end of the truncated cone-shaped structure of the chuck (1) has a larger diameter than the lower end, a circular chuck hole (3) is provided through the center of the chuck (1), a plurality of contraction grooves (4) are provided at the upper end of the chuck (1), a movable supporting mechanism is provided in the chuck hole (3), and the chuck seat (2) comprises a seat body and a connecting sleeve (5), the inner side of the right end of the connecting sleeve (5) is provided with a conical surface, and the inner side of the left end of the connecting sleeve (5) and the lower end of the chuck (1) are both provided with matching threads.

2. A microlens milling positioning fixture according to claim 1, characterized in that: The supporting mechanism comprises a push rod (6) and a threaded seat (7); a groove (8) communicating with the clamping hole (3) is provided at the lower end of the clamping head (1); the threaded seat (7) is rotatably arranged in the groove (8); matching threads are provided in the threaded seat (7) and the groove (8); the push rod (6) is movably arranged in the clamping hole (3) and the lower end thereof extends into the groove (8) and is connected to the upper end of the threaded seat (7).

3. A microlens milling positioning fixture according to claim 1, characterized in that: The clamp seat (2) is provided with a bearing sleeve (9) on the outside of the connecting sleeve (5), and the connecting sleeve (5) is arranged inside the bearing sleeve (9).

4. The microlens milling positioning fixture according to claim 1, characterized in that: A plurality of the contraction grooves (4) are connected to the clamping holes (3).

5. The microlens milling positioning fixture according to claim 1, characterized in that: The clamping head (1) is provided with an elastic coating in the clamping hole (3).

6. The microlens milling positioning fixture according to claim 3, characterized in that: A connecting buckle is provided at the left end of the connecting sleeve (5), and the connecting sleeve (5) is connected to the motor via the connecting buckle.

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