Infrared lens grinding and forming processing tooling

Abstract

The utility model discloses an infrared lens grinding forming processing frock belongs to infrared optical element processing technical field. The frock includes frock base body and its upper end's lens bearing station, and the lens bearing station diameter is less than infrared lens and is received lens through the adhesion layer. The lens bearing station center is connected with the positioning ring through the positioning column, and the positioning ring bottom is equipped with the telescopic column with spring periphery. The utility model discloses through the adhesion mode fixed lens, and the clamping damage when grinding the side edge is thoroughly avoided.

Description

Technical Field

[0001] This utility model belongs to the field of infrared optical element processing technology, specifically relating to an infrared lens grinding and forming tooling. Background Technology

[0002] In the processing of infrared lenses (such as chalcogenide glass), not only is it necessary to grind the spherical surface, but also to precisely grind the outer diameter of its sides to achieve the dimensional and shape accuracy required for assembly. However, conventional side clamping fixtures and vacuum adsorption fixtures are prone to lens rotation during side grinding, which can lead to problems such as cracks and edge breakage, resulting in a significant reduction in yield. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an infrared lens grinding and forming tooling, which fixes the infrared lens by bonding to facilitate full-circumferential, high-precision grinding of the lens side, reduce lens damage, and improve yield.

[0004] The infrared lens grinding and forming tooling of this utility model includes a tooling base and a lens support platform at its upper end. The infrared lens is supported on the lens support platform by an adhesive layer. The diameter of the lens support platform is smaller than the diameter of the infrared lens. The center of the lens support platform is also provided with a connection hole corresponding to the through hole of the infrared lens. A positioning post is threaded into the connection hole, a positioning ring is threaded into the top of the positioning post, and telescopic posts are equidistantly connected to the bottom of the positioning ring to press the infrared lens tightly during bonding.

[0005] The adhesive layer is a hot-melt adhesive material.

[0006] The lens support platform has multiple radially extending exhaust grooves at the center of the end face that contacts the infrared lens.

[0007] The telescopic column includes an outer tube fixedly connected to the bottom of the positioning plate and an inner tube nested inside the outer tube, with a spring connection between the inner tube and the outer tube; a spherical rubber head is provided at the bottom of the inner tube to contact the infrared lens.

[0008] The beneficial effects of this utility model are: Compared with existing technologies, this invention uses a lens support platform with a diameter smaller than that of the infrared lens, combined with a hot-melt adhesive layer for bonding and fixing. This avoids clamping stress on the sides of the lens, effectively preventing problems such as lens spinning, cracking, and edge breakage during grinding, and significantly improving the processing yield. Simultaneously, the invention, through the placement of positioning posts, positioning rings, and spring-loaded telescopic posts, can apply uniform and gentle pressure to the lens during bonding, ensuring a tight fit between the lens and the adhesive layer. This effectively avoids lens damage or bonding gaps caused by uneven pressure. Furthermore, the radial venting grooves on the end face of the lens support platform ensure the strength and uniformity of the bonding, thus providing a stable and reliable clamping foundation for interference-free, full-circumferential high-precision grinding of the lens sides. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are briefly introduced below.

[0010] Figure 1 This is an exploded view of the tooling in the embodiment.

[0011] Figure 2 This is a schematic diagram of the telescopic column structure of the tooling in the embodiment.

[0012] Figure 3 This is a schematic diagram of the tooling usage state in the embodiment.

[0013] Figure 4 This is a schematic diagram of the tooling bonding the infrared lens in the embodiment.

[0014] In the attached diagram, the structural names represented by each number are as follows: 1-Tooling base, 2-Lens support platform, 201-Exhaust groove, 202-Connecting hole, 3-Adhesive layer, 4-Infrared lens, 401-Through hole, 5-Positioning post, 6-Positioning ring, 7-Telescopic post, 701-Outer tube, 702-Inner tube, 703-Spring, 704-Spherical rubber head. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Example 1 See Figures 1 to 2 As shown, an infrared lens grinding and forming tooling is provided, including a tooling base 1, a lens support platform 2, a positioning column 5, a positioning ring 6, and a telescopic column 7.

[0017] The fixture base 1 is cylindrical and is used to clamp the lens onto the machine tool chuck. The lens support table 2 is fixed to the upper surface of the fixture base 1. Its diameter is smaller than the diameter of the infrared lens 4 to be processed, ensuring that the side of the lens is completely suspended, which facilitates the processing of the grinding tool.

[0018] The lens support platform 2 has multiple radial exhaust grooves 201 on its end face to exhaust air, and a connection hole 202 is opened in the center.

[0019] The lower end of the positioning post 5 is threaded to the connecting hole 202, and the upper end is threaded to the positioning ring 6. Multiple telescopic posts 7 are evenly distributed around the bottom of the positioning ring 6. Each telescopic post 7 consists of an outer tube 701, an inner tube 702, a spring 703, and a spherical rubber head 704, forming an elastic pressing mechanism.

[0020] Working principle: See Figure 3 As shown, first, the positioning post 5 is screwed into the connection hole 202 of the lens carrier 2. Hot melt asphalt is applied to the surface of the lens carrier 2 to form an adhesive layer 3, and the infrared lens 4 is placed centered by passing it through the positioning post 5 with its through hole 401.

[0021] Screw in the positioning ring 6, push the telescopic column 7 down, and the spring 703 is compressed so that the spherical rubber head 704 applies uniform elastic pressure to the lens surface, ensuring that the adhesive layer 3 is tightly attached, and the gas is discharged from the exhaust groove 201.

[0022] See Figure 4 As shown, after the adhesive layer 3 has cured, the positioning post 5, positioning ring 6 and telescopic post 7 are removed, and the fixture with the infrared lens 4 is fixed to the machine tool. The side of the fully exposed infrared lens 4 is then precision ground.

[0023] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not describe all details exhaustively, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification.

Claims

1. A tooling for grinding and shaping infrared lenses, characterized in that, It includes a tooling base (1) and a lens support platform (2) at its upper end. The lens support platform (2) supports an infrared lens (4) through an adhesive layer (3). The diameter of the lens support platform (2) is smaller than the diameter of the infrared lens (4). The center of the lens support platform (2) is also provided with a connecting hole (202) corresponding to the through hole (401) of the infrared lens (4). The connecting hole (202) is threaded with a positioning post (5). The top of the positioning post (5) is threaded with a positioning ring (6). The bottom of the positioning ring (6) is circumferentially connected with telescopic posts (7) to press the infrared lens (4) tightly during bonding.

2. The infrared lens grinding and forming tooling according to claim 1, characterized in that: The adhesive layer (3) is a hot-melt adhesive material.

3. The infrared lens grinding and forming tooling according to claim 1, characterized in that: The lens support platform (2) has multiple radially extending exhaust grooves (201) at the center of the end face that contacts the infrared lens (4).

4. The infrared lens grinding and forming tooling according to claim 1, characterized in that: The telescopic column (7) includes an outer tube (701) fixedly connected to the bottom of the positioning plate and an inner tube (702) nested inside the outer tube (701). A spring (703) is provided between the inner tube (702) and the outer tube (701) for connection. A spherical rubber head (704) is provided at the bottom of the inner tube (702) to contact the infrared lens (4).

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