A fixture clamp for full-bore coating of small-size cylindrical elements

Abstract

A kind of small size column element full caliber coating tool clamp, including metal frame and spring fixed structure, the inner surface of the metal frame is fixed with polytetrafluoroethylene plate, can be used to protect the side of column element in extrusion state is not scratched.The spring fixed structure includes spring, two metal plates, one of which is fixed with polytetrafluoroethylene plate on the inner surface, the two metal plates are connected by spring, the other metal plate can be directly fixed on the metal frame screw rod by nut at both ends, the two metal plates are extruded by adjusting nut, so as to realize the side fixation of column element.The utility model has good fixing effect on column element end face full caliber coating, simple structure, clamping and disassembling are convenient, and spring structure has good limiting adaptability to the deformation or gap of column element and clamping structure in high-temperature coating process, and is not easy to produce loosening.

Description

Technical Field

[0001] This patent relates to the field of optical coating technology, specifically to a tooling fixture for full-aperture coating of small cylindrical components. This fixture is particularly suitable for coating processes of small cylindrical optical components such as laser gain media, enabling full-aperture coating of the top and bottom surfaces of the component, while overcoming the shortcomings of traditional fixtures in terms of clamping stress, thermal deformation adaptability, and positioning stability. Background Technology

[0002] With the development of laser technology, the performance improvement of the laser gain medium, as the core component of the laser, is crucial for the entire laser system. In small laser systems, small columnar crystal elements are often used as gain media.

[0003] Full-aperture coating is a key technology for improving the optical performance of such components, but in actual production, traditional fixtures have the following prominent problems:

[0004] 1) Traditional clamps are mostly made of metal. When directly clamping small cylindrical components, the clamping force is too large or the contact surface is too hard, which can easily scratch the side of the component and even cause internal stress concentration, affecting optical performance.

[0005] 2) The coating process requires heating to a certain deposition temperature. The thermal expansion coefficients of the metal fixture and the optical components differ significantly, which can easily cause the components to be squeezed, deformed, or cracked due to deformation mismatch. In addition, the thermal expansion and contraction during the heating and cooling process can cause gaps between the fixture and the components. Traditional rigid fixtures cannot adapt to this gap, which can easily lead to loosening or detachment, seriously affecting the uniformity of the coating.

[0006] 3) For cylindrical components with limited surface area, traditional fixtures are difficult to achieve synchronous and stable clamping of multiple components and lack effective anti-collision design, resulting in low production efficiency and coating consistency.

[0007] Therefore, the shortcomings of traditional clamps are more pronounced in this specific field, necessitating a new type of clamp to address these issues. This clamp should be able to accommodate the full-aperture coating requirements of optical components, while avoiding component damage due to excessive clamping stress, preventing deformation and detachment caused by mismatched coefficients of thermal expansion, and providing stable limiting effects to ensure the stability of the coating process and the consistency between components. A full-aperture coating apparatus can significantly improve the coating quality of optical components, meeting the high performance and high reliability requirements of modern optical products, and also increase production efficiency and reduce production costs, which is of great significance to the development of the optical coating field. Summary of the Invention

[0008] The purpose of this utility model is to provide a small-sized cylindrical element full-diameter coating tooling fixture. Through the specific design of the metal frame and spring fixing structure, it is possible to clamp the cylindrical element for full-diameter coating on the upper and lower end faces.

[0009] The technical solution provided by this utility model is as follows:

[0010] A small-sized cylindrical element full-diameter coating tooling fixture, characterized in that it includes a metal frame and a spring fixing structure;

[0011] The inner surface of the metal frame is fixed with polytetrafluoroethylene plates, which can be used to protect the sides of the column components from being scratched when under compression.

[0012] The spring fixing structure includes a spring and two metal plates. One of the metal plates has a polytetrafluoroethylene plate fixed on its inner surface. The two metal plates are connected by a spring. The two ends of the other metal plate can be directly fixed to the metal frame screw by nuts. By adjusting the nuts, the two metal plates are pressed against each other, thereby achieving side fixing of the column element.

[0013] Furthermore, the metal frame is provided with multiple mounting positions arranged at equal intervals on the left and right, and each mounting position is equipped with the spring fixing structure to realize the side-by-side clamping of multiple column components.

[0014] Furthermore, the metal frame is provided with multiple mounting positions arranged at equal vertical intervals to realize the vertical clamping of multiple columnar components.

[0015] Furthermore, a polytetrafluoroethylene (PTFE) spacer is provided between adjacent column components, and the thickness of the spacer is 0.2-1 mm.

[0016] Furthermore, the screw is provided with scale markings for precisely controlling the rotation angle of the adjusting nut.

[0017] Furthermore, the adjusting nut employs an anti-loosening structure, including a nylon insert or a double nut configuration.

[0018] Furthermore, it also includes a temperature sensor, mounted on a metal frame, for real-time monitoring of the operating temperature.

[0019] Compared with the prior art, the technical effects of this utility model are as follows:

[0020] 1) Polytetrafluoroethylene (PTFE) sheets are fixed on the inner surface of the metal frame and the metal plate of the spring fixing structure, which effectively prevents direct metal contact with the column components and avoids scratches or stress damage. During the high-temperature coating process, PTFE can adapt to temperature changes, reducing the risk of component deformation or breakage due to differences in thermal expansion.

[0021] 2) Two metal plates are connected by a spring. One plate holds the PTFE plate in place, while the other plate applies pressure via a nut. During the coating heating / cooling process, the spring automatically compensates for the thermal expansion difference between the metal and the component, preventing loosening or detachment due to deformation. The spring compression is adjusted via the nut to flexibly accommodate cylindrical components of different sizes, improving versatility.

[0022] 3) The overall design adopts a modular metal frame and spring fixing structure, which can be clamped or disassembled by simply adjusting the nuts. Compared with traditional complex fixtures, this design is easy to operate, reduces manual adjustment time, and improves production efficiency. It can clamp multiple small cylindrical components in a side-by-side or vertical arrangement, with the components separated by PTFE. Attached Figure Description

[0023] Figure 1 This is a top view of a small-sized cylindrical element full-diameter coating fixture according to Example 1.

[0024] Figure 2 This is a top view of a small-sized cylindrical element full-diameter coating fixture according to Example 2. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments and accompanying drawings, but this should not be construed as limiting the scope of protection of the present invention.

[0026] A tooling fixture for full-diameter coating of small-sized cylindrical components, comprising:

[0027] Metal frame 1, with a polytetrafluoroethylene protective layer fixed on its inner surface;

[0028] The spring fixing structure 2 consists of a first metal plate 2a, a second metal plate 2b, and a compression spring 2c. The inner surface of the first metal plate 2a is fixed with a polytetrafluoroethylene protective layer. The two ends of the second metal plate 2b are provided with adjusting nuts 3 and connected to the metal frame 1 by screws 4. The compression spring 2c is connected between the first metal plate 2a and the second metal plate 2b. The compression amount of the compression spring 2c can be controlled by adjusting the nuts 3, thereby realizing the elastic clamping of the column element 5.

[0029] Example 1: Side-by-side clamping of small cylindrical components

[0030] See Figure 1 The figure shows a small-sized cylindrical element full-diameter coating tooling fixture of this utility model, including a metal frame 1. The inner surface of the metal frame 1 is fixed with polytetrafluoroethylene plates, which can protect the side of the cylindrical element from being scratched under the extrusion state.

[0031] The spring-fixing structure includes a spring and two metal plates. One of the metal plates has a polytetrafluoroethylene (PTFE) plate fixed to its inner surface. The two metal plates are connected by a spring. The other metal plate can be directly fixed to the metal frame screws 4 at both ends by nuts 3. By adjusting the nuts, the two metal plates are pressed against each other, thereby generating a compressive force on the small cylindrical element 5 placed side by side, achieving lateral fixation of the element.

[0032] Example 2: Vertical clamping of small-sized cylindrical components

[0033] See Figure 2 The figure shows a full-diameter coating fixture for small-sized cylindrical components according to this utility model. Its structure is characterized by including a metal frame 1 and a spring fixing structure 2. Small-sized cylindrical components are placed vertically within the metal frame, whose inner surfaces are all fixed with polytetrafluoroethylene (PTFE) plates. The PTFE plates within the metal frame protect the sides of the cylindrical components from scratches during compression. The spring fixing structure includes a spring and two metal plates. One metal plate has a PTFE plate fixed to its inner surface, and the two metal plates are connected by a spring. The other metal plate is directly fixed to the metal frame screws 4 at both ends by nuts 3. By adjusting the nuts, the two metal plates are pressed against each other, thereby generating a compressive force between the vertically placed small-sized cylindrical components 5, achieving side fixation of the components.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tooling fixture for full-diameter coating of small-sized cylindrical components, characterized in that, include: A metal frame (1) with a polytetrafluoroethylene protective layer fixed on its inner surface; The spring fixing structure (2) consists of a first metal plate (2a), a second metal plate (2b) and a compression spring (2c). The inner surface of the first metal plate (2a) is fixed with a polytetrafluoroethylene protective layer. The two ends of the second metal plate (2b) are provided with adjusting nuts (3) and connected to the metal frame (1) by screws (4). The compression spring (2c) is connected between the first metal plate (2a) and the second metal plate (2b). The compression amount of the compression spring (2c) can be controlled by adjusting nuts (3), thereby realizing the elastic clamping of the column element (5).

2. The tooling fixture for full-diameter coating of small-sized cylindrical components according to claim 1, characterized in that, The metal frame (1) has multiple mounting positions arranged at equal intervals on the left and right, and each mounting position is equipped with the spring fixing structure (2) to realize the side-by-side clamping of multiple column elements (5).

3. The tooling fixture for full-diameter coating of small-sized cylindrical components according to claim 1, characterized in that, The metal frame (1) has multiple mounting positions arranged at equal vertical intervals to realize the vertical clamping of multiple column components (5).

4. The tooling fixture for full-diameter coating of small-sized cylindrical elements according to any one of claims 1-3, characterized in that, A polytetrafluoroethylene (PTFE) gasket (6) is provided between adjacent column elements (5), and the thickness of the gasket (6) is 0.2-1 mm.

5. The tooling fixture for full-diameter coating of small-sized cylindrical elements according to any one of claims 1-3, characterized in that, The screw (4) is marked with scales to precisely control the rotation angle of the adjusting nut (3).

6. The tooling fixture for full-diameter coating of small-sized cylindrical components according to claim 5, characterized in that, The adjusting nut (3) adopts an anti-loosening structure, including a nylon insert or a double nut configuration.

7. The tooling fixture for full-diameter coating of small-sized cylindrical elements according to any one of claims 1-3, characterized in that, It also includes a temperature sensor, which is mounted on the metal frame (1) for real-time monitoring of the operating temperature.

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