Reflector mounting structure of optical mechanism

Abstract

The utility model discloses an optical mechanism reflector installation structure which comprises an installation frame and a connecting bolt, the installation frame is provided with at least three installation feet, the installation feet are provided with installation holes, a cushion block and a disc-shaped gasket are sequentially arranged above each installation foot upwards, and a spherical gasket and a conical gasket are sequentially arranged below each installation foot downwards. The connecting bolt sequentially penetrates through the disc-shaped washer, the cushion block, the mounting hole, the spherical washer and the conical washer and then is fixedly connected with the optical mechanism in a threaded mode, and the reflector is mounted in the center of the mounting frame. The reflector is fixed on the mounting frame, the spherical washers and the conical washers which are matched with each other, the cushion blocks and the butterfly washers are arranged on the connecting bolts of the mounting feet of the mounting frame, so that the position of the mounting frame is adjusted through relative sliding of the spherical washers and the conical washers in the mounting process, and finally, the three mounting feet have no mounting stress; the installation frame is prevented from generating torsion deformation after installation, mirror surface deformation of the reflector is guaranteed, and therefore the performance requirement of an optical mechanism is met.

Description

Technical Field

[0001] The utility model relates to the technical field of precise installation of optical mechanism reflectors, in particular to an installation structure of an optical mechanism reflector. Background Art

[0002] Reflectors are essential components for optical mechanisms. The installation accuracy of the reflectors determines the size of the effective optical aperture of the product. After the reflector is installed, the flatness of the deformed surface is required to be no more than 0.05λ (λ=632.8nm), which places high demands on the installation stability of the reflector. After years of exploration, various methods have been developed for the installation of reflectors, but most of them have problems such as poor stability and deformation under force. Currently, the industry commonly uses the method of first installing the reflector and the adjustable structure as a whole and then installing it on the optical mechanism, and then using the adjustable structure to adjust the reflector. This method makes the flatness of the reflector easy to change during thermal cycles and mechanical processes, and the stability is insufficient. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides an optical mechanism reflector installation structure.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] An optical mechanism reflector mounting structure comprises a mounting frame and connecting bolts, wherein the mounting frame has at least three mounting feet, the mounting feet are provided with mounting holes, and each mounting foot is provided with a cushion block and a disc washer in sequence upwardly, and a spherical washer and a conical washer in sequence downwardly; the connecting bolts pass through the disc washer, the cushion block, the mounting hole, the spherical washer and the conical washer in sequence, and are threadedly connected and fixed to the optical mechanism, and a reflector is installed in the center of the mounting frame.

[0006] Preferably, the mounting frame is a triangular structure, and the three corners of the triangular structure are bent downward to form the mounting feet.

[0007] Furthermore, the contact surfaces of the spherical washer and the conical washer are coated with molybdenum disulfide lubricant.

[0008] Furthermore, the roughness of the contact surface does not exceed 0.2 μm.

[0009] Preferably, the shape of the pad block is adapted to the shape of the mounting foot.

[0010] Beneficial effects of the utility model:

[0011] 1. The utility model fixes the reflector on the mounting frame, and arranges mutually matching spherical washers and conical washers, as well as pads and butterfly washers on the connecting bolts of the mounting feet of the mounting frame, so that the mounting frame can adjust its position through the relative sliding of the spherical washers and conical washers during the installation process, and finally makes the three mounting feet of the mounting frame free of installation stress, thereby avoiding torsional deformation after the mounting frame is installed, and finally ensuring the mirror deformation and installation stability of the reflector, and meeting the performance requirements of the optical mechanism;

[0012] 2. By coating the contact surface of the spherical washer and the conical washer with molybdenum disulfide lubricant, the roughness between the spherical washer and the conical washer is reduced, and the position of the mounting frame can be adjusted more flexibly.

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0016] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0017] Description of reference numerals:

[0018] 1-mounting frame; 2-connecting bolt; 3-spacer block; 4-butterfly washer; 5-spherical washer; 6-conical washer; 7-optical mechanism; 1-1-mounting foot. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.

[0020] See also Figures 1 to 3The utility model provides an optical mechanism reflector mounting structure, which specifically includes a mounting frame 1 and a connecting bolt 2. The mounting frame 1 is a triangular structure, and the three corners of the triangular structure are bent downward to form three mounting feet 1-1. Each mounting foot 1-1 is provided with a mounting hole, and a cushion block 3 and a disc washer 4 are sequentially arranged upward above each mounting foot 1-1, and a spherical washer 5 and a conical washer 6 are sequentially arranged downward below, and the contact surfaces of the spherical washer 5 and the conical washer 6 are coated with molybdenum disulfide lubricant, so that the roughness of the contact surfaces of the spherical washer 5 and the conical washer 6 does not exceed 0.2μm; the connecting bolt 2 passes through the butterfly washer 4, the cushion block 3, the mounting hole, the spherical washer 5 and the conical washer 6 in sequence, and is threadedly connected and fixed to the optical mechanism 7, and the reflector of the optical mechanism 7 is installed in the center of the mounting frame 1.

[0021] By matching the spherical washer 5 with the conical washer 6 and coating the contact surface of the spherical washer 5 and the conical washer 6 with molybdenum disulfide lubricant, the roughness of the contact surface is reduced, thereby making the relative sliding smoother. When the mounting frame 1 is fixed on the optical mechanism 7, the relative sliding of the spherical washer 5 and the conical washer 6 is used for adjustment, so that the mounting frame 1 as a whole has no installation stress, thereby avoiding torsional deformation of the mounting frame 1 and ensuring the deformation of the mirror surface.

[0022] The butterfly washer 4 is located at the uppermost end of the mounting frame 1. Due to its special structure, it evenly transmits the axial positive pressure of the connecting bolt 2 to the entire assembly, providing better clamping force during the installation process.

[0023] The shape of the pad 3 is adapted to the shape of the mounting foot 1-1. The mounting foot 1-1 and the pad 3 are preferably of a quadrilateral structure. The thickness of the pad 3 is 2 to 3 mm. The pad 3 isolates the radial torque of the connecting bolt 2 during the application of the pre-tightening force, thereby preventing the radial torque from being transmitted to the mounting frame 1 and causing the flatness of the reflector on the mounting frame 1 to deteriorate.

[0024] The process of installing the reflector of the optical mechanism 7 through the installation structure is as follows:

[0025] Clean all the parts of the mounting structure, first combine the spherical washer 5 and the conical washer 6 and place abrasive sand on the contact surface for grinding to ensure the smoothness of the contact surface and avoid point contact or line contact, then pour out the abrasive sand, apply molybdenum disulfide lubricant on the contact surface of the two to reduce the friction between the spherical washer 5 and the conical washer 6, so that the relative sliding between the spherical washer 5 and the conical washer 6 is smoother; then the butterfly washer 4 and the cushion block 3, the spherical washer 5 and the conical washer 6 are respectively arranged on the upper and lower end surfaces of the three mounting feet 1-1 of the mounting frame 1 on which the reflector is installed, and pass The connecting bolts 2 pass through the mounting holes of each washer and the mounting foot 1-1, and firstly apply pre-pressure to each connecting bolt 2. Then, the three mounting feet 1-1 of the mounting frame 1 are adjusted to each other by relying on the interaction between the spherical washer 5 and the conical washer 6, so that the three mounting feet of the mounting frame 1 have no mounting stress transmitted to the reflector. Then, pre-pressure is gradually applied to the three connecting bolts 2 at the same time, and finally the mounting frame 1 is firmly fixed on the optical mechanism 7. The reflector installed by this mounting structure has a flatness change of ≤±5″ in the later mechanical and thermal cycle process, which fully meets the normal use requirements of the product.

[0026] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An optical mechanism reflector mounting structure, characterized in that: It includes a mounting frame and connecting bolts, the mounting frame has at least three mounting feet, the mounting feet are provided with mounting holes, and each mounting foot is provided with a cushion block and a butterfly washer in sequence upward, and a spherical washer and a conical washer in sequence downward; the connecting bolts pass through the butterfly washer, the cushion block, the mounting hole, the spherical washer and the conical washer in sequence, and are threadedly connected and fixed to the optical mechanism, and a reflector is installed in the center of the mounting frame.

2. The optical mechanism reflector mounting structure according to claim 1, characterized in that: The mounting frame is a triangular structure, and the three corners of the triangular structure are bent downward to form the mounting feet.

3. The optical mechanism reflector mounting structure according to claim 2, characterized in that: Molybdenum disulfide lubricant is coated on the contact surfaces of the spherical washer and the conical washer.

4. The optical mechanism reflector mounting structure according to claim 3, characterized in that: The roughness of the contact surface does not exceed 0.2 μm.

5. The optical mechanism reflector mounting structure according to claim 4, characterized in that: The shape of the pad block is adapted to the shape of the mounting foot.

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