Calibration device for rectangular prism

By designing a right-angle prism verification device including a calibration plate, a rotating block and an encoder, the problem of inaccurate detection of right-angle prism angles in the prior art is solved, and higher detection accuracy and practicality are achieved.

CN222211659UActive Publication Date: 2024-12-20NANYANG HONGCHENG OPTOELECTRONICS TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421070064.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-16
Publication Date
2024-12-20
Estimated Expiration
2034-05-16

AI Technical Summary

Technical Problem

Existing right-angle prisms are susceptible to external factors when detecting angles, resulting in inaccurate detection and poor practicality.

Method used

A verification device including a base plate, a verification plate, a rotating block, an encoder and a mounting table was designed. Angle measurement is achieved by rotating the verification plate and the central axis to detect the angle, combined with a transmission system of the ball screw and a guide rod. and stable position.

Benefits of technology

The accuracy of angle detection of right angle prisms and the practicality of the verification device are improved, the influence of external factors is reduced, and the position adjustment and fixation of different right angle prisms are facilitated.

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Abstract

The utility model discloses a checking device for a rectangular prism, relates to the technical field of checking devices, and aims to solve the problems that the existing rectangular prism is subjected to large external factors during angle detection, the angle value of the rectangular prism is inconvenient to accurately detect, and the practicability is poor in the prior art. A bottom frame is fixedly installed above the bottom plate, a verification flat plate is fixedly installed above the bottom frame, fixing blocks are symmetrically and fixedly installed at the front end and the rear end of one side of the verification flat plate respectively, a center shaft is rotatably installed between the two fixing blocks, and a rotating block is fixedly installed on the outer side of the center shaft. A verification rotating plate is fixedly installed above the rotating block, an encoder is fixedly installed in front of the fixed block located at the front end, the measuring end of the encoder is fixedly connected with the center shaft, an upper groove is formed in the upper end face of the verification flat plate, and a placing table is arranged in the upper groove. The upper end face of the placing table is flush with the upper end face of the verification flat plate.
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Description

Technical Field

[0001] The utility model relates to the technical field of calibration devices, in particular to a calibration device for a right-angle prism. Background Art

[0002] Right-angle prisms are usually used to turn the light path or deflect the image formed by the optical system by 90°. Depending on the orientation of the prism, the image can be consistent left and right, upside down, inconsistent left and right, or consistent up and down. Right-angle prisms can also be used for applications such as image combination and beam deviation. After the right-angle prism is produced, the angle of the right-angle prism needs to be calibrated to check whether it is standard.

[0003] For example, the authorized patent with the publication number CN 210862565 U (an angle measuring device for processing right-angle prisms): comprises a bottom plate, on which a right-angle reflector and a straight plate are arranged, the angles between the plane of the straight plate and the two vertical planes of the right-angle reflector are both 45°, a connecting rod and a laser emitter are vertically arranged on one side of the straight plate close to the right-angle reflector, a detection cylinder parallel to the laser emitter is arranged on the connecting rod, a through hole with two ends passing through is opened inside the detection cylinder, and a distance is left between the detection cylinder and the straight plate;

[0004] Although the above-mentioned prior art detects by reflecting the light emitted by the laser transmitter through the right-angle prism to be detected, the shaking and deflection of the laser transmitter may easily lead to inaccurate angle detection of the right-angle prism and the inability to accurately detect the angle value. Furthermore, the existing right-angle prism is greatly affected by external factors during angle detection, and it is inconvenient to accurately detect the angle value of the right-angle prism, and its practicality is poor. Therefore, the market urgently needs to develop a right-angle prism calibration device to help people solve the existing problems. Utility Model Content

[0005] The purpose of the utility model is to provide a right-angle prism calibration device to solve the problems raised in the above background technology that the existing right-angle prism is greatly affected by external factors during angle detection, it is inconvenient to accurately detect the angle value of the right-angle prism, and the practicality is poor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a calibration device for a right-angle prism, comprising a bottom plate, a bottom frame fixedly installed above the bottom plate, a calibration plate fixedly installed above the bottom frame, fixed blocks symmetrically fixedly installed at the front and rear ends of one side of the calibration plate, a central axis rotatably installed between the two fixed blocks, a rotating block fixedly installed outside the central axis, a calibration rotating plate fixedly installed above the rotating block, an encoder fixedly installed in front of the fixed block at the front end, a measuring end of the encoder fixedly connected to the central axis, an upper groove is provided on the upper end surface of the calibration plate, a placing table is provided inside the upper groove, and the upper end surface of the placing table is flush with the upper end surface of the calibration plate.

[0007] Preferably, fixed vertical plates are symmetrically fixedly installed at the front and rear ends above the placement table, and clamps are provided on the inner sides of the two fixed vertical plates. A screw rod is rotatably installed on the clamps on one side facing the fixed vertical plates, and the screw rod is threadedly connected to the fixed vertical plate and penetrates the fixed vertical plate. A hand wheel is fixedly installed on the end of the screw rod away from the clamps.

[0008] Preferably, a ball screw is rotatably mounted inside the bottom frame, a sliding block is slidably mounted on the outer side of the ball screw via a ball nut, and a transmission plate is fixedly mounted above the sliding block.

[0009] Preferably, a slot hole is provided inside the verification plate below the upper groove, and the slot hole is connected to the upper groove, the slot hole is connected to the bottom frame, and the upper end of the transmission plate passes through the slot hole and is fixedly connected to the placement table.

[0010] Preferably, a hand wheel three is rotatably mounted on one side of the bottom frame, and the hand wheel three is fixedly connected to the ball screw.

[0011] Preferably, a guide rod is fixedly installed inside the bottom frame along the bottom of the ball screw, a guide block is slidably provided on the outside of the guide rod, the guide block and the sliding block are fixedly connected by screws, a hand wheel 2 is provided at the front end of the guide block, a screw 2 is fixedly installed on the side of the hand wheel 2 facing the guide block, the screw 2 is threadedly connected to the guide block, and the screw 2 penetrates into the interior of the guide block and contacts with the guide rod.

[0012] Preferably, pads are symmetrically fixedly installed on both sides below the bottom plate, and an operation panel is fixedly installed on one side above the bottom plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the utility model performs angle calibration of a right-angle prism, the right-angle prism is placed on a calibration plate, and then the calibration rotating plate is rotated to make the calibration rotating plate fit with an end face. When the calibration rotating plate is rotated, the central axis can follow the rotation through the transmission of the rotating block, and then the rotation angle of the calibration rotating plate can be detected by the encoder to detect the rotation angle of the central axis, so that an angle value of the right-angle prism can be measured. Furthermore, by arranging the calibration plate and the calibration rotating plate, external factors during the angle calibration of the right-angle prism can be reduced, and the angle value of the right-angle prism can be detected, thereby improving the accuracy of the calibration of the right-angle prism and increasing the practicality of the calibration device.

[0015] The utility model provides a placing table, which is convenient for placing the right-angle prism during calibration. The placing table can be translated, which is convenient for position adjustment according to different right-angle prisms. A fixed vertical plate, a clamping plate, a screw rod and a hand wheel are provided on the placing table, which can clamp and fix the right-angle prism on the placing table, which is beneficial to the position stability during the calibration of the right-angle prism and increases practicality.

[0016] The utility model has a ball screw movably installed inside the bottom frame. Through the rotation of the ball screw, the sliding block can drive the placing table to move horizontally through the transmission plate, thereby increasing the convenience of adjusting the position of the placing table.

[0017] The utility model can limit and guide the translation of the sliding block by means of the guide rod and the guide block, which is conducive to the stable linear translation of the sliding block and increases the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a right-angle prism calibration device of the utility model;

[0019] Figure 2 A cross-sectional view of a right-angle prism calibration device of the utility model;

[0020] Figure 3 It is an enlarged schematic diagram of the A part of the utility model;

[0021] Figure 4 It is a top view of the guide block of the utility model.

[0022] In the figure: 1. bottom plate; 2. pad; 3. operation panel; 4. bottom frame; 5. calibration plate; 501. upper groove; 502. slot hole; 6. fixed block; 7. calibration turn plate; 8. encoder; 9. placement table; 10. fixed vertical plate; 11. clamping plate; 12. hand wheel one; 13. screw one; 14. ball screw; 15. guide rod; 16. sliding block; 17. transmission plate; 18. guide block; 19. rotating block; 20. center axis; 21. hand wheel two; 22. screw two; 23. hand wheel three. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-4The utility model provides an embodiment: a calibration device for a right-angle prism, comprising a bottom plate 1, a bottom frame 4 is fixedly installed above the bottom plate 1, a calibration plate 5 is fixedly installed above the bottom frame 4, fixed blocks 6 are symmetrically fixedly installed at the front and rear ends of one side of the calibration plate 5, a central axis 20 is rotatably installed between the two fixed blocks 6, a rotating block 19 is fixedly installed outside the central axis 20, a calibration rotating plate 7 is fixedly installed above the rotating block 19, an encoder 8 is fixedly installed in front of the fixed block 6 at the front end, a measuring end of the encoder 8 is fixedly connected to the central axis 20, an upper groove 501 is arranged on the upper end surface of the calibration plate 5, a placing table 9 is arranged inside the upper groove 501, and the upper end surface of the placing table 9 is flush with the upper end surface of the calibration plate 5.

[0025] When in use, when checking the angle, the right-angle prism is clamped on the mounting table 9, and then the checking turntable 7 is rotated to make the checking turntable 7 fit with an end face. When the checking turntable 7 rotates, the central axis 20 can follow the rotation through the transmission of the rotating block 19, and then the rotation angle of the central axis 20 is detected by the encoder 8, so that the rotation angle of the checking turntable 7 can be detected, so that the angle value of this part of the right-angle prism can be measured, and then through the setting of the checking plate 5 and the checking turntable 7, the external factors affected by the right-angle prism during the angle calibration can be reduced, and the angle value of the right-angle prism can be detected, thereby improving the accuracy of the right-angle prism calibration and increasing the practicality of the calibration device.

[0026] Furthermore, fixed uprights 10 are symmetrically fixedly installed at the front and rear ends above the placement table 9, and clamps 11 are provided on the inner sides of the two fixed uprights 10. A screw 13 is rotatably installed on the clamp 11 toward one side of the fixed upright 10. The screw 13 is threadedly connected to the fixed upright 10 and penetrates the fixed upright 10. A hand wheel 12 is fixedly installed on one end of the screw 13 away from the clamp 11, so that the screw 13 can be rotated by the hand wheel 12 to drive the clamp 11 to move, thereby facilitating the position fixation of the right-angle prism on the placement table 9.

[0027] Furthermore, a ball screw 14 is rotatably installed inside the bottom frame 4, a sliding block 16 is slidably installed on the outside of the ball screw 14 through a ball nut, a transmission plate 17 is fixedly installed above the sliding block 16, and a hand wheel three 23 is rotatably installed on one side of the bottom frame 4, and the hand wheel three 23 is fixedly connected to the ball screw 14, so that the ball screw 14 can be rotated by the hand wheel three 23.

[0028] Furthermore, a slot hole 502 is provided inside the verification plate 5 along the lower side of the upper groove 501, and the slot hole 502 is connected to the upper groove 501, and the slot hole 502 is connected to the bottom frame 4. The upper end of the transmission plate 17 passes through the slot hole 502 and is fixedly connected to the placement table 9, so that through the rotation of the ball screw 14, the sliding block 16 can drive the placement table 9 to move through the transmission of the transmission plate 17, which is beneficial to the position adjustment of the placement table 9.

[0029] Furthermore, a guide rod 15 is fixedly installed inside the bottom frame 4 along the bottom of the ball screw 14, and a guide block 18 is slidably provided on the outer side of the guide rod 15. The guide block 18 is fixedly connected to the sliding block 16 by screws, so that the movement of the sliding block 16 can be guided. A hand wheel 21 is provided at the front end of the guide block 18, and a screw 22 is fixedly installed on the side of the hand wheel 21 facing the guide block 18. The screw 22 is threadedly connected to the guide block 18, and the screw 22 penetrates into the interior of the guide block 18 and contacts with the guide rod 15. The screw 22 is rotated by the hand wheel 21 to facilitate the fixation of the position of the guide block 18.

[0030] Furthermore, pads 2 are symmetrically fixedly installed on both sides below the base plate 1, and an operation panel 3 is fixedly installed on one side above the base plate 1. A processor and a display screen are arranged inside the operation panel 3. The operation panel 3 is electrically connected to the encoder 8 to facilitate the angle calibration of the right-angle prism.

[0031] Working principle: When using, when a batch of right-angle prisms of the same specification are to be angle-calibrated, the position of the placing table 9 is first set, and a right-angle prism is placed on the placing table 9 of the calibration plate 5, so that one surface of the right-angle prism is in contact with the placing table 9, and then the screw 13 is rotated by the hand wheel 12 to make the clamping plate 11 clamp and fix the right-angle prism, and then the calibration rotating plate 7 is rotated to press the calibration rotating plate 7 on the right-angle prism, and the ball screw 14 is driven to rotate by turning the hand wheel 3 23, so that the sliding block 16 drives the placing table 9 to translate, and the position of the right-angle prism is changed until the calibration rotating plate 7 is in contact with one end face of the right-angle prism. Then, the screw rod 22 is rotated by the hand wheel 21 to fix the position of the guide block 18, so that the position of the placement table 9 is fixed, which is convenient for angle calibration of the right-angle prisms of the same batch and the same specification. When calibrating the angle, the right-angle prism is clamped on the placement table 9, and then the calibration rotating plate 7 is rotated to make the calibration rotating plate 7 fit with an end face. When the calibration rotating plate 7 rotates, the central axis 20 can follow the rotation through the transmission of the rotating block 19, and then the encoder 8 detects the rotation angle of the central axis 20, and the rotation angle of the calibration rotating plate 7 can be detected, so that the angle value of this part of the right-angle prism can be measured.

[0032] 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.

Claims

1. A right-angle prism calibration device, comprising a base plate (1), characterized in that: A bottom frame (4) is fixedly mounted above the bottom plate (1), a calibration plate (5) is fixedly mounted above the bottom frame (4), fixed blocks (6) are symmetrically fixedly mounted at the front and rear ends of one side of the calibration plate (5), a central axis (20) is rotatably mounted between the two fixed blocks (6), a rotating block (19) is fixedly mounted outside the central axis (20), a calibration rotating plate (7) is fixedly mounted above the rotating block (19), an encoder (8) is fixedly mounted in front of the fixed block (6) at the front end, a measuring end of the encoder (8) is fixedly connected to the central axis (20), an upper groove (501) is arranged on the upper end surface of the calibration plate (5), a placing table (9) is arranged inside the upper groove (501), and an upper end surface of the placing table (9) is flush with an upper end surface of the calibration plate (5).

2. A right angle prism calibration device according to claim 1, characterized in that: Fixed upright plates (10) are symmetrically fixedly installed at the front and rear ends above the placement platform (9), and clamping plates (11) are arranged on the inner sides of the two fixed upright plates (10). A screw rod (13) is rotatably installed on one side of the clamping plate (11) facing the fixed upright plate (10). The screw rod (13) is threadedly connected to the fixed upright plate (10) and penetrates the fixed upright plate (10), and a hand wheel (12) is fixedly installed on the end of the screw rod (13) away from the clamping plate (11).

3. A right angle prism calibration device according to claim 2, characterized in that: A ball screw (14) is rotatably mounted inside the bottom frame (4), a sliding block (16) is slidably mounted on the outside of the ball screw (14) via a ball nut, and a transmission plate (17) is fixedly mounted above the sliding block (16).

4. The device for verifying a right-angle prism according to claim 3, characterized in that: A slot hole (502) is provided inside the calibration plate (5) below the upper groove (501), and the slot hole (502) is connected to the upper groove (501), and the slot hole (502) is connected to the bottom frame (4), and the upper end of the transmission plate (17) passes through the slot hole (502) and is fixedly connected to the placement table (9).

5. The device for verifying a right angle prism according to claim 4, characterized in that: A hand wheel three (23) is rotatably mounted on one side of the bottom frame (4), and the hand wheel three (23) is fixedly connected to the ball screw (14).

6. A right angle prism calibration device according to claim 5, characterized in that: A guide rod (15) is fixedly installed inside the bottom frame (4) along the lower side of the ball screw (14); a guide block (18) is slidably arranged outside the guide rod (15); the guide block (18) is fixedly connected to the sliding block (16) by screws; a second hand wheel (21) is arranged at the front end of the guide block (18); a second screw rod (22) is fixedly installed on the side of the second hand wheel (21) facing the guide block (18); the second screw rod (22) is threadedly connected to the guide block (18), and the second screw rod (22) penetrates into the interior of the guide block (18) and contacts the guide rod (15).

7. A right angle prism calibration device according to claim 6, characterized in that: Pads (2) are symmetrically fixedly mounted on both sides below the bottom plate (1), and an operating panel (3) is fixedly mounted on one side above the bottom plate (1).