Large-length dynamic calibration device based on synchronous measurement of laser interferometer

Abstract

The present invention relates to the technical field of laser interferometry measurement, and discloses a large-length dynamic calibration device based on synchronous measurement of a laser interferometer, including a base. A support frame is arranged on the top of the base. Fixed blocks are fixedly connected to the top of the base and the bottom of the support frame respectively. A first docking block is fixedly connected to one side of each fixed block, and a second docking block is fixedly connected to one side of each fixed block. A rotating column is rotatably connected to the inside of each second docking block. A connecting rod is fixedly connected to the outer wall of each rotating column. One end of one connecting rod is rotatably connected to the other connecting rod. A slider is rotatably connected to the inside of each connecting rod. A limiting block is arranged between the first docking blocks. Through the cooperation among components such as the first docking blocks, the connecting rods and the limiting block, an efficient double-layer shock absorption and buffering effect is achieved. In this way, the shock energy is absorbed and dissipated layer by layer through a multi-stage buffering structure, significantly reducing the impact of vibration on the internal structure and performance of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of laser interferometry, and specifically to a large-length dynamic calibration device based on synchronous measurement by a laser interferometer. Background Art

[0002] A laser interferometer is an instrument that uses the principle of laser interference for precise measurement. Due to its high precision and non-contact measurement characteristics, the laser interferometer has become an important tool in scientific research and industrial production, and is widely used in various fields that require high-precision measurement. Because the measurement accuracy of the laser interferometer can reach the nanometer level, far exceeding the accuracy requirements of traditional measurement methods, this is particularly important for large-length measurement, because any small error will be amplified within a large length range. Therefore, in order to accurately measure and calibrate large-length objects or distances, we will perform measurements based on a laser interferometer and then measure it.

[0003] In the fields of modern industry and precision manufacturing, equipment often faces various external vibration interferences during operation. These vibrations not only affect the normal operation of the equipment, but may also damage the precise structure inside the equipment, reducing the service life and measurement accuracy of the equipment. Although existing shock absorption technologies can alleviate the impact of vibrations to a certain extent, most of them can only provide a single-layer shock absorption effect, have poor adaptability to high-intensity vibration environments, and are difficult to meet the requirements of modern industrial equipment for efficient shock absorption;

[0004] In addition, when industrial measurement equipment performs static and dynamic measurements, it usually requires manual mode switching, which not only increases the complexity of operation, but also easily leads to the generation of measurement errors. The measurement equipment in the prior art often lacks flexibility when switching between static and dynamic modes, and it is difficult to ensure the measurement accuracy and stability under different measurement conditions. Therefore, developing a device that can freely switch between static and dynamic measurement modes is of great significance for improving measurement efficiency and accuracy;

[0005] In industrial automation and precision manufacturing, the clamping and adjustment functions of equipment for objects are also a key requirement. Most of the existing clamping equipment relies on fixed fixtures and is difficult to automatically adjust according to the shapes and sizes of different objects, resulting in poor operation flexibility and limited application scope. Especially when dealing with objects of complex shapes and different sizes, the adaptability and efficiency of the existing clamping equipment are low and cannot meet the requirements of high-efficiency production. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a large-length dynamic calibration device based on synchronous measurement by a laser interferometer, which solves the problem of insufficient shock absorption and buffering ability of the equipment.

[0007] To achieve the above object, the present invention is realized through the following technical solutions: A large-length dynamic calibration device based on synchronous measurement by a laser interferometer, including a base, a support frame is arranged on the top of the base, fixed blocks are fixedly connected to the top of the base and the bottom of the support frame respectively, a docking block one is fixedly connected to one side of each fixed block, a docking block two is fixedly connected to one side of each fixed block, a rotating column is rotatably connected to the inside of each docking block two, a connecting rod is fixedly connected to the outer wall of each rotating column, one end of one connecting rod is rotatably connected to the other connecting rod, a slider is rotatably connected to the inside of each connecting rod, a limiting block is arranged between the docking blocks one, fixed frames are fixedly connected to both sides of the limiting block, the sliders are all slidably connected to the inside of the fixed frames, a damper one is arranged inside each fixed frame, the output end of each damper one is fixedly connected to one side of the slider, the docking blocks one are all slidably connected to the inside of the limiting block, a damper two is arranged on the top of the bottom docking block one, and the output end of the damper two is fixedly connected to the bottom of the top docking block one. A measuring component is arranged on the top of the support frame, a driving component is arranged on the top of the support frame, and a fixing component is arranged on the top of the support frame.

[0008] Preferably, the measuring component includes a lifting platform, the lifting platform is arranged inside the support frame, a laser instrument is arranged on the top of the lifting platform, a beam splitter is arranged on one side of the laser instrument, and the beam splitter is arranged on the top of the lifting platform.

[0009] Preferably, the driving component includes a limiting frame, the limiting frame is fixedly connected to the top of the support frame, a driving block is arranged inside the limiting frame, and the output end of the driving block is fixedly connected to a threaded column one.

[0010] Preferably, the threaded column one is rotatably connected to the inside of the limiting frame, and a sliding plate is threadedly connected to the outer wall of the threaded column one.

[0011] Preferably, the fixing component includes a support frame, the support frame is fixedly connected to the top of the sliding plate, and a fixing ring one is arranged at one end of the support frame.

[0012] Preferably, a fixing ring two is fixedly connected to the top of the fixing ring one, and a DC motor is arranged at the bottom of the fixing ring one.

[0013] Preferably, a plurality of gears are rotatably connected to the inside of the fixing ring one, and a limiting ring is fixedly connected to the top of the fixing ring one.

[0014] Preferably, the output end of the DC motor is fixedly connected to a gear, a toothed ring is rotatably connected to the inside of the fixing ring two, and the gear meshes with the toothed ring.

[0015] Preferably, a rack is slidably connected to the inside of the limiting ring, and the rack meshes with the gear on one side.

[0016] Preferably, a sliding frame is slidably connected inside the rack, a second threaded column is rotatably connected inside the sliding frame, the second threaded column is threadedly connected inside the rack, and a knob is fixedly connected to the outer wall of the second threaded column.

[0017] Working principle: When measurement is required, first drive one of the gears to rotate through a DC motor, so that the gear drives the toothed ring to rotate, thereby driving other gears to rotate synchronously. At this time, the corresponding rack will also be pushed towards the center position of the first fixed ring due to the engagement of the tooth marks, clamping the object placed at the center position of the first fixed ring. And according to the specific shape of the object, we can rotate the knob to make the second threaded column rotate synchronously, thereby changing the specific length of the rack through the sliding position of the sliding frame. When dynamic measurement is required, the object can be clamped in the fixing mechanism at the top of the corresponding slide plate. At this time, drive the rotation of the first threaded column through the drive block, so that the slide plate slides along the thread under the restriction of the limit frame, synchronously driving the measured object to displace. When measuring a static object, the slide plate just needs to remain stationary. In this way, a light beam can be emitted by the laser instrument and then split by the beam splitter, and measurement can be carried out through calculation. And during the measurement process, in order to maintain its stability, when the top of the equipment support frame is shaken due to external factors, the distance between the support frame and the base changes. At this time, the distance between the corresponding fixing block and the first docking block driven by the base and the support frame will decrease, and then the first shock absorption and buffering will be carried out through the action of the second damper. Moreover, when the distance between the two fixing blocks and the first docking block decreases, the inclination angle of the corresponding connecting rod will also change, so that the connecting rod can synchronously push the slider to slide under the restriction of the fixed frame, and then the second shock absorption and buffering will be carried out through the first damper, thereby achieving the double shock absorption and buffering effect.

[0018] The present invention provides a large-length dynamic calibration device based on synchronous measurement of a laser interferometer.

[0019] It has the following beneficial effects:

[0020] 1. Through the cooperation between components such as the first docking block, the connecting rod and the limiting block, the present invention successfully constructs a set of efficient double-layer shock absorption and buffering systems. Through this design, when the equipment is subjected to external vibrations, the vibration energy can be gradually absorbed and dissipated through the multi-stage buffer structure, significantly reducing the impact of vibrations on the internal structure and performance of the equipment. This double-layer shock absorption and buffering system not only improves the seismic resistance of the equipment, but also extends the service life of the equipment, ensuring its stable and reliable operation in a high-vibration environment.

[0021] 2. Through the cooperation among components such as the sliding plate, the first threaded column, and the limiting frame, the present invention realizes the free switching between the static and dynamic measurement modes of the device. This design enables the sliding plate to remain stationary during static measurement, ensuring the stability and accuracy of the measurement results. During dynamic measurement, the first threaded column is driven to rotate by the driving block, and the sliding plate slides along the limiting frame, driving the object to be measured to move, thereby achieving high-precision measurement of the dynamic characteristics of the object. This flexible measurement mode greatly improves the adaptability and measurement accuracy of the device, meeting various measurement requirements.

[0022] 3. Through the cooperation among the toothed ring, the rack, and the gear, the present invention realizes the effect that the device can freely adjust the clamping according to the specific shape of the object. Through this process, the device can accurately adjust the clamping according to the shape and size of the object, which not only ensures the stability and reliability of the clamping process, but also greatly improves the operation flexibility and efficiency of the device in different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the present invention;

[0024] Figure 2 is a schematic diagram of the internal structure of the support frame of the present invention;

[0025] Figure 3 is a schematic diagram of the shock-absorbing structure of the present invention;

[0026] Figure 4 is Figure 3 the enlarged view of part A in

[0027] Figure 5 is a perspective view of the fixing component of the present invention;

[0028] Figure 6 is Figure 5 the enlarged view of part B in

[0029] Among them, 1. Base; 2. Support frame; 3. Laser instrument; 4. Beam splitter; 5. Fixed block; 6. First docking block; 7. Connecting rod; 8. Limiting block; 9. Fixed frame; 10. Slide block; 11. First damper; 12. Second damper; 13. Driving block; 14. First threaded column; 15. Sliding plate; 16. Limiting frame; 17. Lifting table; 18. First fixing ring; 19. DC motor; 20. Gear; 21. Limiting ring; 22. Toothed ring; 23. Rack; 24. Slide frame; 25. Second threaded column; 26. Knob; 27. Second fixing ring; 28. Second docking block; 29. Rotating column; 30. Support frame. DETAILED DESCRIPTION OF THE INVENTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0031] Embodiment:

[0032] Please refer to the attached Figure 2 - attached Figure 4 , the embodiment of the present invention provides a large-length dynamic calibration device based on synchronous measurement of a laser interferometer, including a base 1. A support frame 2 is provided on the top of the base 1. Fixed blocks 5 are fixedly connected to the top of the base 1 and the bottom of the support frame 2. A docking block one 6 is fixedly connected to one side of each fixed block 5. A docking block two 28 is fixedly connected to one side of each fixed block 5. A rotating column 29 is rotatably connected inside each docking block two 28. A connecting rod 7 is fixedly connected to the outer wall of each rotating column 29. One end of one connecting rod 7 is rotatably connected to the other connecting rod 7. A sliding block 10 is rotatably connected inside each connecting rod 7. A limiting block 8 is provided between the docking blocks one 6. Fixed frames 9 are fixedly connected to both sides of the limiting block 8. The sliding blocks 10 are all slidably connected inside the fixed frames 9. A damper one 11 is provided inside each fixed frame 9. The output ends of the dampers one 11 are fixedly connected to one side of the sliding blocks 10. The docking blocks one 6 are all slidably connected inside the limiting block 8. A damper two 12 is provided on the top of the bottom docking block one 6. The output end of the damper two 12 is fixedly connected to the bottom of the top docking block one 6. A measuring assembly is provided on the top of the support frame 2. A driving assembly is provided on the top of the support frame 2. A fixing assembly is provided on the top of the support frame 2.

[0033] Specifically, when the top of the device support frame 2 is vibrated due to external factors, the distance between the support frame 2 and the base 1 will change. This change directly affects the relative distance between the fixed block 5 driven by the support frame 2 and the docking block 1-6 driven by the base 1. With the continuous action of vibration, the distance between these fixed blocks 5 and the docking block 1-6 gradually decreases, and the system then activates the shock absorption mechanism. First, the reduced distance triggers the damper 2-12, achieving the first shock absorption and buffering. The damper 2-12 plays a key role in this process. Through its damping characteristics, it converts the vibration energy into heat energy or other forms of energy, thereby reducing the impact of vibration transmitted to the internal structure of the device. This initial shock absorption and buffering effectively protects the core components of the device, reducing mechanical wear and performance degradation caused by vibration. At the same time, during the process of the distance between the fixed block 5 and the docking block 1-6 decreasing, the inclination angle of the connecting rod 7 also changes. The change in the inclination angle of the connecting rod 7 is a precise mechanical process. It is not just a simple geometric change but a crucial link in the entire shock absorption system. As the inclination angle of the connecting rod 7 changes, the connecting rod 7 begins to push the slider 10 to slide under the restriction of the fixed frame 9. The sliding of the slider 10 further triggers the damper 1-11, achieving the second shock absorption and buffering. The damper 1-11, as the second-stage shock absorption device, complements the damper 2-12. Through the double buffering effect, the vibration energy is consumed and absorbed layer by layer. This double shock absorption and buffering design not only improves the shock absorption capacity of the entire system but also significantly extends the service life of the device, ensuring stable operation in complex and harsh environments. The design concept of the double shock absorption and buffering system is to achieve more efficient absorption and dispersion of vibration energy through a multi-stage buffering structure. The first shock absorption and buffering mainly targets large-amplitude vibrations, quickly absorbing the energy through the damper 2-12 and reducing the impact directly transmitted to the core components of the device. The second shock absorption and buffering then uses the damper 1-11 to refine and further buffer the residual vibrations, ensuring that the vibration energy is completely dissipated. This double shock absorption and buffering system not only performs excellently in mechanical protection but also has significant advantages in maintaining precision and performance stability. Through this design, the device can still maintain a highly precise operating state in a high-vibration environment, ensuring the stability and reliability of measurement and operation.

[0034] Please refer to the attached Figure 1 , the measurement component includes a lifting platform 17. The lifting platform 17 is arranged inside the support frame 2. A laser instrument 3 is arranged on the top of the lifting platform 17. A beam splitter 4 is arranged on one side of the laser instrument 3. The beam splitter 4 is arranged on the top of the lifting platform 17.

[0035] Specifically, by emitting a light beam through the laser instrument 3, the system realizes the initial step of high-precision measurement. The light beam generated by the laser instrument 3 has high directivity and stability, which provides a basic guarantee for the accuracy of measurement. After the light beam is emitted, it will pass through the beam splitter 4 to achieve the splitting and multi-path propagation of the light beam. The function of the beam splitter 4 is to divide the original light beam into several independent light beams, and each light beam can be used for different measurement paths or purposes. The lifting platform 17 can adjust the measurement height of the laser instrument 3 and the beam splitter 4 according to the object to be measured.

[0036] Please refer to the appendix Figure 1 The driving assembly includes a limit frame 16. The limit frame 16 is fixedly connected to the top of the support frame 2. A driving block 13 is arranged inside the limit frame 16. The output end of the driving block 13 is fixedly connected to a first threaded column 14. The first threaded column 14 is rotatably connected inside the limit frame 16. A sliding plate 15 is threadedly connected to the outer wall of the first threaded column 14.

[0037] Specifically, by driving the driving block 13 to drive the first threaded column 14 to rotate, during the rotation of the first threaded column 14, it precisely meshes with the thread on the sliding plate 15, pushing the sliding plate 15 to slide along a predetermined trajectory. In this process, the limit frame 16 plays an important guiding and limiting role, ensuring that the movement path of the sliding plate 15 is accurate without deviation or jamming. The smooth sliding of the sliding plate 15 then drives the object to be measured to perform synchronous displacement, enabling the dynamic measurement process to proceed smoothly. When measuring a static object, the operation process is relatively simple. In this case, the sliding plate 15 remains stationary, and the object to be measured also remains fixed. In this state, the measuring device can perform static measurement on the object to obtain the required data. This static measurement mode is suitable for accurately analyzing the parameters of the object in a specific state to ensure the stability and consistency of the measurement results.

[0038] Please refer to the appendix Figure 5 - appendix Figure 6 The fixing assembly includes a support frame 30. The support frame 30 is fixedly connected to the top of the sliding plate 15. One end of the support frame 30 is provided with a first fixing ring 18; a second fixing ring 27 is fixedly connected to the top of the first fixing ring 18. A DC motor 19 is arranged at the bottom of the first fixing ring 18. A plurality of gears 20 are rotatably connected inside the first fixing ring 18. A limit ring 21 is fixedly connected to the top of the first fixing ring 18. The output end of the DC motor 19 is fixedly connected to a gear 20. A toothed ring 22 is rotatably connected inside the second fixing ring 27. The gear 20 meshes with the toothed ring 22. A rack 23 is slidably connected inside the limit ring 21. One side of the rack 23 meshes with the gear 20. A sliding frame 24 is slidably connected inside the rack 23. A second threaded column 25 is rotatably connected inside the sliding frame 24. The second threaded column 25 is threadedly connected inside the rack 23. A knob 26 is fixedly connected to the outer wall of the second threaded column 25.

[0039] Specifically, driven by the DC motor 19, the gear 20 starts to rotate, which in turn drives the gear ring 22 to rotate synchronously. The rotation of the gear ring 22 causes other gears 20 meshing with it to rotate synchronously. This synchronism ensures the stability and efficiency of the entire transmission system. In this process, the precise meshing relationship between the gear 20 and the gear ring 22 is the key. As the gear 20 rotates, the rack 23 is pushed towards the center position of the first fixed ring 18 due to its meshing with the tooth marks. This meshing method ensures the smooth movement of the rack 23, avoiding jamming and unnecessary frictional losses, thereby improving the durability and reliability of the entire device. When the rack 23 moves to the center position of the first fixed ring 18, an object placed at this position can be firmly clamped. This design not only makes the clamping process of the object smoother and more efficient but also significantly improves the automation level of the device. By precisely controlling the rotation speed and direction of the DC motor 19, precise adjustment of the clamping force and clamping position can be achieved, thus meeting the requirements of objects of different sizes and shapes. Generally speaking, this system has remarkable effects in improving production efficiency, reducing manual intervention, and enhancing product quality.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-length dynamic calibration device based on synchronous measurement by a laser interferometer, comprising a base (1), characterized in that, A support frame (2) is provided at the top of the base (1). Fixed blocks (5) are fixedly connected to both the top of the base (1) and the bottom of the support frame (2). A first docking block (6) is fixedly connected to one side of each fixed block (5). A second docking block (28) is fixedly connected to one side of each fixed block (5). A rotating column (29) is rotatably connected to the inside of each second docking block (28). Connecting rods (7) are fixedly connected to the outer walls of the rotating columns (29). One end of one connecting rod (7) is rotatably connected to the other connecting rod (7). Sliders (10) are rotatably connected to the inside of the connecting rods (7). A limiting block (8) is provided between the first docking blocks (6). Fixed frames (9) are fixedly connected to both sides of the limiting block (8). The sliders (10) are all slidably connected to the inside of the fixed frames (9). A first damper (11) is provided inside each fixed frame (9). The output ends of the first dampers (11) are fixedly connected to one side of the sliders (10). The first docking blocks (6) are all slidably connected to the inside of the limiting block (8). A second damper (12) is provided at the top of the bottom first docking block (6). The output end of the second damper (12) is fixedly connected to the bottom of the top first docking block (6). A measuring assembly is provided at the top of the support frame (2). A driving assembly is provided at the top of the support frame (2). A fixing assembly is provided at the top of the support frame (2); The measuring assembly includes a lifting platform (17). The lifting platform (17) is arranged inside the support frame (2). A laser instrument (3) is provided at the top of the lifting platform (17). A beam splitter (4) is provided on one side of the laser instrument (3). The beam splitter (4) is arranged at the top of the lifting platform (17); The driving assembly includes a limiting frame (16). The limiting frame (16) is fixedly connected to the top of the support frame (2). A driving block (13) is arranged inside the limiting frame (16). A first threaded rod (14) is fixedly connected to the output end of the driving block (13); The first threaded rod (14) is rotatably connected to the inside of the limiting frame (16). A sliding plate (15) is threadedly connected to the outer wall of the first threaded rod (14); The fixing assembly includes a support frame (30). The support frame (30) is fixedly connected to the top of the sliding plate (15). A first fixing ring (18) is arranged at one end of the support frame (30); A second fixing ring (27) is fixedly connected to the top of the first fixing ring (18). A DC motor (19) is arranged at the bottom of the first fixing ring (18); A plurality of gears (20) are rotatably connected to the inside of the first fixing ring (18). A limiting ring (21) is fixedly connected to the top of the first fixing ring (18); The output end of the DC motor (19) is fixedly connected to one gear (20). A toothed ring (22) is rotatably connected to the inside of the second fixing ring (27). The gear (20) is meshed with the toothed ring (22); A rack (23) is slidably connected to the inside of the limiting ring (21). One side of the rack (23) is meshed with the gear (20).

2. The large-length dynamic calibration device based on synchronous measurement by a laser interferometer according to claim 1, wherein A sliding frame (24) is slidably connected inside the rack (23), a second threaded column (25) is rotatably connected inside the sliding frame (24), the second threaded column (25) is threadedly connected inside the rack (23), and a knob (26) is fixedly connected to the outer wall of the second threaded column (25).

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