A highly stable displacement adjustment frame

Abstract

This invention discloses a highly stable displacement adjustment frame, comprising a housing, a floating ring, and a rear cover. Adjacent side walls of the housing are connected to a first driving mechanism and a second driving mechanism for driving the floating ring to move along the X-axis and Y-axis, respectively. One end of each of the first and second driving mechanisms extends into the housing and abuts against the outer side wall of the floating ring. A first clamping mechanism and a second clamping mechanism are mounted on the side wall of the housing opposite to the first and second driving mechanisms. A floating block is slidably connected to the outer side wall of the floating ring, away from the first and second driving mechanisms. One end of each of the first and second clamping mechanisms extends into the housing and abuts against the outer side wall of the floating block. An elastic element is provided between the outer side wall of the floating block and the inner side wall of the housing. Under the action of the first and second clamping mechanisms, this invention can effectively fix the position of optical elements, making it suitable for use in environments with high vibration and improving stability.

Description

Technical Field

[0001] This invention relates to the field of optical experimental equipment technology, and in particular to a highly stable displacement adjustment frame. Background Technology

[0002] Optical components are the basic building blocks of an optical system, most of which function as imaging elements, such as lenses, prisms, and mirrors. Other components play special roles in the optical system (such as beam splitting, image transmission, and filtering), such as reticles, filters, gratings, and optical fiber components.

[0003] In various optical experiments or applications, in order to obtain better imaging results, it is necessary to fine-tune the position of optical components to meet experimental requirements. At this time, it is necessary to install the optical components on a displacement adjustment frame and build an optical system to adjust and fix the position of the optical components.

[0004] Many devices for adjusting optical elements have been disclosed in the prior art. For example, patent application number CN202220721654.3 discloses a clamp for adjusting the position of a lens, which includes two spring assemblies, a longitudinal adjusting screw, a transverse adjusting screw, a lens adjusting frame, a lens cover plate, and a lens fixing assembly. The two spring assemblies are mounted on the lens adjusting frame. The transverse adjusting screw is mounted on the side of the lens adjusting frame away from one spring assembly, and the longitudinal adjusting screw is mounted on the side of the lens adjusting frame away from the other spring assembly. The lens fixing assembly is mounted on the lens adjusting frame through the lens cover plate.

[0005] The aforementioned fixture is also an adjustment frame used to adjust optical components. Although it can achieve displacement adjustment of optical components in the X and Y axes, the following problems may occur when it is used in complex environments with high vibration intensity:

[0006] 1) The lens (i.e., optical element) in the fixture is mounted on the lens fixing assembly. When the displacement is adjusted to the optimal position, the position of the lens fixing assembly is only held in place by the spring assembly, which is not stable. During the experiment, it is easy to have result deviation and poor imaging, which reduces the adjustment accuracy of the optical element.

[0007] 2) Due to the significant vibration in the optical experimental environment, the longitudinal and transverse adjustment screws are susceptible to vibration during the experiment, which may cause them to loosen or even fall off the lens adjustment frame.

[0008] 3) The external components of the fixture are also prone to shaking when subjected to large vibrations, which greatly reduces the structural stability of the entire optical experimental system and affects the optical experimental results.

[0009] Therefore, how to effectively solve the problems of the aforementioned adjustment frame and provide an adjustment frame with a stable structure that is suitable for experimental environments with large vibrations has become an urgent technical problem to be solved. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a displacement adjustment frame with a simple structure and high stability suitable for use in environments with large vibrations.

[0011] The technical solution adopted by the present invention to solve its technical problem is as follows: a highly stable displacement adjustment frame, including a housing, a floating ring installed in the housing, and a rear cover on the top of the housing. The housing has a clearance hole in the center, and its adjacent side walls are respectively connected to a first driving mechanism and a second driving mechanism for driving the floating ring to move along the X-axis and along the Y-axis. One end of the first driving mechanism and the second driving mechanism extends into the housing and abuts against the outer side wall of the floating ring. A first clamping mechanism and a second clamping mechanism are respectively installed on the side wall of the housing opposite to the first driving mechanism and the second driving mechanism. Floating blocks are slidably connected on the outer side wall of the floating ring that is away from the first driving mechanism and the second driving mechanism and opposite to the first clamping mechanism and the second clamping mechanism. One end of the first clamping mechanism and the second clamping mechanism extends into the housing and abuts against the outer side wall of the floating block. An elastic element is provided between the outer side wall of the floating block and the inner side wall of the housing.

[0012] This invention adds a first clamping mechanism and a second clamping mechanism that abut against the floating block. After the position adjustment of the optical element installed in the floating ring is completed, the first drive mechanism and the second drive mechanism hold the floating ring, and the first clamping mechanism and the second clamping mechanism hold the floating block. Under the reset action of the elastic element, the position of the floating ring is clamped in the adjusted position. Even in the experimental environment with large vibration, the position of the optical element installed in the floating ring is fixed in the adjusted position, which improves the stability and imaging effect of the displacement adjustment frame.

[0013] Furthermore, an inwardly extending groove is provided on the outer wall of the floating block, and one end of the first clamping mechanism and the second clamping mechanism extends into the groove and abuts against the inner wall of the groove.

[0014] Furthermore, the inner wall of the floating block is provided with a groove that extends from its left side wall to its right side wall, and the outer wall of the floating ring is provided with a protrusion that engages with the groove at a position corresponding to the floating block.

[0015] Furthermore, the floating block is provided with a top bead at its top.

[0016] Furthermore, the elastic element is a spring, one end of which is connected to the housing and the other end is connected to the floating block.

[0017] Furthermore, the housing includes two drive frames, two clamping frames, and a bottom plate located at the bottom. The two drive frames are used to install the first drive mechanism and the second drive mechanism, and the two clamping frames are used to install the first clamping mechanism and the second clamping mechanism. The two drive frames and the two clamping frames are connected in sequence to form a square frame of the housing. A recessed platform is also provided between the square frame and the bottom plate. The clearance hole is opened at the center of the bottom plate.

[0018] Furthermore, the sides of the sinking platform near the top clamping frame all protrude towards the inner wall of the top clamping frame, and a groove is formed between the protruding part and the inner wall of the top clamping frame. The floating block is engaged in the groove and moves along the X-axis or Y-axis within the groove.

[0019] Furthermore, the first driving mechanism includes an X-axis adjusting threaded pair, the second driving mechanism includes a Y-axis adjusting threaded pair, the first clamping mechanism includes an X-axis clamping threaded pair, the second clamping mechanism includes a Y-axis clamping threaded pair, and bushings are fitted on the screws of the X-axis adjusting threaded pair, the Y-axis adjusting threaded pair, the X-axis clamping threaded pair, and the Y-axis clamping threaded pair.

[0020] Furthermore, the portion of the bushing located outside the housing and connected to the outer side wall of the housing is glued to the outer side wall of the housing, and the portion located inside the housing is fastened to the bottom of the housing by a first screw. The bushing and the screw are connected by threads and fastened by a second screw.

[0021] Furthermore, the floating ring includes a connecting ring, an optical element mounting ring, and a limiting ring that are connected and coaxially arranged from bottom to top. The optical element mounting ring is also provided with a retaining ring and a locking ring is also sleeved around its periphery.

[0022] The advantages of this invention's highly stable displacement adjustment frame are as follows: The invention has a simple structure and is easy to operate. By adding a first clamping mechanism and a second clamping mechanism that abut against the floating block, after the position adjustment of the optical element installed in the floating ring is completed, the first driving mechanism, the second driving mechanism, the first clamping mechanism, and the second clamping mechanism will all generate a thrust along the center of the floating ring. Under the reset action of the elastic element, the position of the floating ring is clamped in the adjusted position. Even in experimental environments with large vibrations, the position of the optical element installed in the floating ring is fixed in the adjusted position, thus improving the stability and imaging effect of the displacement adjustment frame. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a highly stable displacement adjustment frame according to the present invention;

[0024] Figure 2 for Figure 1Top view;

[0025] Figure 3 for Figure 1 An explosion diagram;

[0026] Figure 4 A schematic diagram of an explosion from another perspective;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the shell;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the floating ring;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the floating block;

[0030] Figure 8 A three-dimensional structural diagram of the floating ring and floating block mounted on the housing.

[0031] The above figures are labeled as follows: 1-House, 2-Rear cover, 3-Allowing hole, 4-Floating ring, 5-X-axis adjusting thread pair, 6-Y-axis adjusting thread pair, 7-X-axis clamping thread pair, 8-Y-axis clamping thread pair, 9-Bushing, 10-Second screw, 11-Through hole, 12-First floating block, 13-Second floating block, 14-Locking ring, 15-First drive frame, 16-Second drive frame, 17-First clamping frame, 18-Second clamping frame, 19-Base plate, 20-Sunking platform, 21-First slot, 22-Second slot, 23-Connecting ring, 24-Optical element mounting ring, 25-Limiting ring, 26-Second wear-resistant pad, 27-Raised strip, 28-Groove, 29-Top ball, 30-Spring, 31-Sunking groove. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, but these specific embodiments do not limit the scope of protection of the present invention in any way.

[0033] Example 1

[0034] See Figure 1-8 A highly stable displacement adjustment bracket includes a housing 1 and a rear cover 2 covering the top of the housing 1. The housing 1 has a clearance hole 3 at its center, and the rear cover 2 has a through hole 11 at its center communicating with the clearance hole 3. The rear cover 2 is detachably connected to the housing 1 by screws, and the through hole 11 is a φ35 mm through hole. The C-Mount internal thread on the rear cover 2 and the C-Mount external thread on the floating ring can be used to install C-Mount threaded series components.

[0035] The housing 1 is equipped with a floating ring 4, which includes two integrally formed drive frames (specifically, the first drive frame 15 and the second drive frame 16), two clamping frames (specifically, the first clamping frame 17 and the second clamping frame 18), and a base plate 19. The first drive frame 15, the second drive frame 16, the first clamping frame 17, and the second clamping frame 18 are connected end to end to form a square frame of the housing 1. The base plate 19 is located at the bottom of the square frame. A recessed platform 20 is also provided between the square frame and the base plate 19. The clearance hole 3 is opened at the center of the base plate 19. The floating ring 4 is installed in the recessed platform 20.

[0036] The recessed platform 20 protrudes from the side of the first clamping frame 17 and the second clamping frame 18 toward the inner wall of the first clamping frame 17 and the second clamping frame 18, and the protruding part has a groove (specifically corresponding to the first groove 21 and the second groove 22) between it and the inner wall of the first clamping frame 17 and the second clamping frame 18. The first groove 21 is fitted with a first floating block 12, and the second groove 22 is fitted with a second floating block 13. The outer walls of the first floating block 12 and the second floating block 13 are both provided with inwardly extending grooves 28. The first floating block 12 and the second floating block 13 have the same structure, and both are provided with a top bead 29. The top bead 29 can eliminate the gap in the Z-axis direction and further improve stability. Springs 30 for resetting are provided between the first floating block 12 and the first clamping frame 17 and between the second floating block 13 and the second clamping frame 18.

[0037] The slot setting can limit the movement direction of the floating block and has a guiding function. Specifically, when the position of the floating ring 4 is adjusted along the X-axis, the first floating block 12 can only move along the X-axis direction in the first slot 21; when the position of the floating ring 4 is adjusted along the Y-axis, the second floating block 13 can only move along the Y-axis direction in the second slot 22.

[0038] A first driving mechanism and a second driving mechanism are respectively installed on the first driving frame 15 and the second driving frame 16. The first driving mechanism includes an X-axis adjusting threaded pair 5, one end of which extends into the housing 1 and abuts against the outer wall of the floating ring 4. The second driving mechanism includes a Y-axis adjusting threaded pair 6, one end of which extends into the housing 1 and abuts against the outer wall of the floating ring 4. The portions of the outer wall of the floating ring 4 that abut against the X-axis adjusting threaded pair 5 and the Y-axis adjusting threaded pair 6 are each provided with a first wear-resistant pad made of 440C material. The first wear-resistant pad increases the contact strength of the steel balls in the X-axis adjusting threaded pair 5 and the Y-axis adjusting threaded pair 6, preventing wear of the parts from affecting accuracy.

[0039] The first clamping frame 17 and the second clamping frame 18 are respectively equipped with the first clamping mechanism and the second clamping mechanism. The first clamping mechanism includes an X-axis clamping threaded pair 7, one end of which extends into the groove 28 of the first floating block 12 and abuts against the inner wall of the groove 28. The second clamping mechanism includes a Y-axis clamping threaded pair 8, one end of which extends into the groove 28 of the second floating block 13 and abuts against the inner wall of the groove 28.

[0040] The first floating block 12 is provided with a second wear-resistant pad 26 made of 440C material at the connection between it and the X-axis tightening threaded pair 7, and the second floating block 13 is provided with a connection between it and the Y-axis tightening threaded pair 8. The second wear-resistant pad 26 can increase the contact strength of the steel balls of the X-axis tightening threaded pair 7 and the Y-axis tightening threaded pair 8, and prevent the wear of parts from affecting the accuracy.

[0041] The X-axis adjusting threaded pair 5, X-axis tightening threaded pair 7, Y-axis adjusting threaded pair 6, and Y-axis tightening threaded pair 8 have the same structure, and the center lines of X-axis adjusting threaded pair 5 and X-axis tightening threaded pair 7 are on the same straight line, and the center lines of Y-axis adjusting threaded pair 6 and Y-axis tightening threaded pair 8 are on the same straight line.

[0042] The first floating block 12 and the second floating block 13 are slidably connected to the outer wall of the floating ring 4, which is away from the X-axis adjusting thread pair 5 and the Y-axis adjusting thread pair 6 and is opposite to the X-axis clamping thread pair 7 and the Y-axis clamping thread pair 8. The first floating block 12 and the second floating block 13 are located between the housing 1 and the outer wall of the floating ring 4 (specifically, the first floating block 12 is located between the inner wall of the first clamping frame 17 and the outer wall of the floating ring 4, and the second floating block 13 is located between the inner wall of the second clamping frame 18 and the outer wall of the floating ring 4).

[0043] In the above scheme, by adding an X-axis clamping thread pair 7 and a Y-axis clamping thread pair 8 that abut against the first floating block 12 and the second floating block 13, the position of the optical element installed in the floating ring 4 can be adjusted by using the X-axis clamping thread pair 7 and the Y-axis clamping thread pair 8 respectively. After the position of the optical element is adjusted, the X-axis clamping thread pair 7, the Y-axis clamping thread and the spring 30 all generate a pushing force in the direction of the floating ring 4 on the first floating block 12 and the second floating block 13 respectively, so that the floating ring 4 is fixed in the adjusted position under the action of the X-axis adjusting thread pair 5, the Y-axis adjusting thread pair 6, the X-axis clamping thread pair 7, the Y-axis clamping thread and the spring 30. Even in the experimental environment with large vibration, the optical element or external component on the floating ring 4 can be effectively fixed, which is suitable for environments with large vibration or other complex environments, and improves the stability and imaging effect of the displacement adjustment frame.

[0044] Bushings 9 are fitted on the screws of the X-axis adjusting threaded pair 5, Y-axis adjusting threaded pair 6, X-axis tightening threaded pair 7, and Y-axis tightening threaded pair 8. The bushings 9 are threadedly connected to the screws, with a portion protruding outside the housing and a portion inside the housing. The portion of the bushing 9 located outside the housing 1 and connected to the outer wall of the housing 1 is fixedly connected to the outer wall of the housing 1 by adhesive, and the portion located inside the housing 1 is fastened to the bottom of the housing 1 by a first screw. The first screw can lock the position of the X-axis adjusting threaded pair 5, Y-axis adjusting threaded pair 6, X-axis tightening threaded pair 7, and Y-axis tightening threaded pair 8 to prevent loosening of the X-axis adjusting threaded pair 5, Y-axis adjusting threaded pair 6, X-axis tightening threaded pair 7, and Y-axis tightening threaded pair 8 under complex environments.

[0045] The bushing 9 is connected to the screw by a thread and is fastened by a second screw 10. The second screw 10 can lock the position of the screw in the bushing to prevent the screw from loosening. Under the combined locking action of the first screw and the second screw 10, the X-axis adjusting thread pair 5, the Y-axis adjusting thread pair 6, the X-axis tightening thread pair 7 and the Y-axis tightening thread pair 8 can be effectively prevented from falling off the housing 1.

[0046] The floating ring 4 includes a connecting ring 23, an optical element mounting ring 24, and a limiting ring 25, which are connected and coaxially arranged from bottom to top. The optical element mounting ring 24 is also provided with a retaining ring, which is used to hold the optical element in the optical element mounting ring 24. The outer periphery of the optical element mounting ring 24 is also provided with a locking ring 14, which can effectively prevent the external components from shaking and obtain good anti-loosening performance.

[0047] The inner diameters of the connecting ring 23 and the optical element mounting ring 24 are equal. The outer diameter of the connecting ring 23 is smaller than the inner diameter of the clearance hole 3. The outer diameter of the optical element mounting ring 24 is larger than the inner diameter of the clearance hole 3. The inner diameter of the limiting ring 25 is smaller than the inner diameter of the optical element mounting ring 24.

[0048] The specific structure of the first floating block 12 and the second floating block 13 slidingly connected to the outer side wall of the floating ring 4 is as follows: the outer side wall of the floating ring 49 is provided with vertical cut surfaces, each vertical cut surface is evenly distributed in a cross shape on the outer side wall of the floating ring 4, the inner side wall of the first floating block 12 and the second floating block 13 is provided with a groove 31, and the vertical cut surfaces of the outer side wall of the floating ring 4 are provided with protrusions 27 that engage with the grooves 31 at positions corresponding to the first floating block 12 and the second floating block 13, the length of the protrusions 27 is less than the length of the grooves 31.

[0049] In the above scheme, a first floating block 12 and a second floating block 13 are slidably connected to the outer wall of the floating ring 4. A sliding connection structure of the protrusion 27 and the groove 31 is adopted. When the X-axis adjusting thread pair 5 pushes the floating ring 4 to move along the X-axis direction to adjust the position of the optical element, the first floating block 12 moves along the X-axis direction in the first slot 21, and the second floating block 13 cannot move along the X-axis direction in the second slot 22. In the corresponding Y-axis direction, the floating ring 4 will move in the groove 31 in a direction parallel to the X-axis under the guidance of the protrusion 27 and the groove 31 of the second floating block 13, so that the floating ring 4 does not move in the Y-axis direction. Thus, the floating ring 4 as a whole only moves along the X-axis direction, thereby adjusting the position of the optical element in one direction and improving the adjustment accuracy of the optical element.

[0050] When the Y-axis adjusting threaded pair 6 pushes the floating ring 4 to move along the Y-axis direction to adjust the position of the optical element, the second floating block 13 moves along the Y-axis direction in the second slot 22, and the first floating block 12 cannot move along the Y-axis direction in the second slot 22. In the corresponding X-axis direction, the floating ring 4 will move in the slot 31 in a direction parallel to the Y-axis under the guidance of the protrusion 27 and the groove 31 of the first floating block 12, so that the floating ring 4 does not move in the X-axis direction, so that the floating ring 4 moves only along the Y-axis direction, thereby adjusting the position of the optical element in one direction and improving the adjustment accuracy of the optical element.

[0051] The working principle and usage of the integrated automatic reset displacement adjustment frame of this invention:

[0052] In use, the position of the floating ring 4 can be adjusted by using the X-axis adjusting thread pair 5 and the Y-axis adjusting thread pair 6, and the floating block can be tightened by using the X-axis clamping thread pair 7 and the Y-axis clamping thread pair 8. This can effectively fix the optical components or external components installed on the floating ring 4, and is suitable for environments with large vibrations or other complex environments.

[0053] It should be noted that this article uses the terms "first," "second," "first," "second," "third," "fourth," etc., to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another.

[0054] The terms "up," "down," "left," "right," "front," "back," "vertical," "inner," and "outer" used in this document to describe orientation or position are for ease of explanation and are based on the orientation or positional relationships shown in the accompanying drawings. Specifically, "inner" as described herein refers to the direction toward the center of the housing. In actual devices, these orientations may vary depending on the arrangement of the device. They are only used to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A highly stable displacement adjustment frame, comprising a housing, a floating ring installed within the housing, and a rear cover covering the top of the housing, wherein the housing has a clearance hole at its center, and its adjacent side walls are respectively connected to a first driving mechanism and a second driving mechanism for driving the floating ring to move along the X-axis and along the Y-axis, respectively, one end of the first driving mechanism and the second driving mechanism extending into the housing and abutting against the outer side wall of the floating ring, characterized in that: A first clamping mechanism and a second clamping mechanism are respectively installed on the sidewalls of the housing opposite to the first and second driving mechanisms. Floating blocks are slidably connected to the outer sidewalls of the floating ring, which are away from the first and second driving mechanisms and opposite to the first and second clamping mechanisms. One end of the first and second clamping mechanisms extends into the housing and abuts against the outer sidewall of the floating block. An elastic element is provided between the outer sidewall of the floating block and the inner sidewall of the housing. A groove is formed on the inner sidewall of the floating block, extending from its left sidewall to its right sidewall. A protrusion is provided on the outer sidewall of the floating ring at a position corresponding to the floating block, engaging with the groove.

2. The highly stable displacement adjustment frame as described in claim 1, characterized in that: The outer wall of the floating block has an inwardly extending groove, and one end of the first clamping mechanism and the second clamping mechanism extends into the groove and abuts against the inner wall of the groove.

3. The highly stable displacement adjustment frame as described in claim 1, characterized in that: The floating block is equipped with a top bead.

4. The highly stable displacement adjustment frame as described in claim 1, characterized in that: The elastic element is a spring, one end of which is connected to the housing and the other end is connected to the floating block.

5. The highly stable displacement adjustment frame as described in claim 1, characterized in that: The housing includes two drive frames, two clamping frames, and a base plate at the bottom. The two drive frames are used to install a first drive mechanism and a second drive mechanism. The two clamping frames are used to install a first clamping mechanism and a second clamping mechanism. The two drive frames and the two clamping frames are connected in sequence to form a square frame of the housing. A recessed platform is also provided between the square frame and the base plate. The clearance hole is opened at the center of the base plate.

6. The highly stable displacement adjustment frame as described in claim 5, characterized in that: The sides of the sinking platform near the top clamping frame all protrude towards the inner wall of the top clamping frame, and a groove is formed between the protruding part and the inner wall of the top clamping frame. The floating block is locked in the groove and moves along the X-axis or Y-axis within the groove.

7. The high-stability displacement adjustment frame as described in claim 1, characterized in that: The first driving mechanism includes an X-axis adjusting threaded pair, the second driving mechanism includes a Y-axis adjusting threaded pair, the first clamping mechanism includes an X-axis clamping threaded pair, and the second clamping mechanism includes a Y-axis clamping threaded pair. Bushings are fitted on the screws of the X-axis adjusting threaded pair, the Y-axis adjusting threaded pair, the X-axis clamping threaded pair, and the Y-axis clamping threaded pair.

8. The high-stability displacement adjustment frame as described in claim 7, characterized in that: The part of the bushing located outside the housing and connected to the outer side wall of the housing is glued to the outer side wall of the housing, and the part located inside the housing is fastened to the bottom of the housing by a first screw. The bushing and the screw are connected by threads and fastened by a second screw.

9. The high-stability displacement adjustment frame as described in claim 1, characterized in that: The floating ring includes a connecting ring, an optical element mounting ring, and a limiting ring that are connected and coaxially arranged from bottom to top. The optical element mounting ring is also provided with a retaining ring and a locking ring is sleeved around it.

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