A three-jaw positioning device for processing a soft vibration reduction waveguide

Abstract

The application discloses a three-jaw positioning device for soft damping waveguide processing, and belongs to the technical field of microwave device precision processing equipment, and comprises a docking damping seat as a supporting base, a clamping mechanism for soft contact type zero-damage clamping of a microwave transmission guide pipe is arranged at one end of the docking damping seat, and the clamping mechanism comprises three clamping jaw seats which are equidistantly and slidingly connected at the end of the docking damping seat. Due to the arrangement of the clamping mechanism, low-frequency vibrations in the transmission during clamping can be absorbed through a transition damping layer, so that errors can be avoided when a through hole is formed in the outer side of the guide pipe, the contact area can be increased through the soft contact layer, and stress concentration can be avoided, so that scratches can be avoided on the outer side surface of the soft damping waveguide.

Description

Technical Field

[0001] This invention relates to the field of precision machining equipment for microwave devices, and in particular to a three-jaw positioning device for machining soft vibration-damping waveguides. Background Technology

[0002] In the fields of microwave and millimeter-wave technology, soft waveguides (or simply soft waveguides) are a key transmission line component. Due to their unique flexibility and vibration damping capabilities, they play a crucial role in complex systems such as radar, microwave communication, aerospace, and satellite communication. They can effectively adapt to complex system layouts and limited installation space, solve alignment challenges during waveguide docking, and ensure signal transmission stability and reliability by isolating mechanical stress through their flexible structure when the system is subjected to vibration, impact, or drastic temperature changes. Compared to rigid waveguides, soft waveguides are typically constructed from precision-wound helical metal strips covered with a flexible sheath such as neoprene rubber. Their thinner walls and corrugated configuration allow for bending and twisting within a certain range, but also result in relatively lower mechanical strength and sensitivity to external pressure.

[0003] During the fabrication, assembly, and testing of flexible waveguides, specialized positioning devices are required for stable clamping. Three-jaw positioning devices are a commonly used type of clamp, designed for accurate workpiece positioning. However, existing devices of this type, especially those using traditional metal jaws, have significant drawbacks when clamping flexible waveguides. Due to the relatively soft surface of flexible waveguides, the clamping force of the metal jaws tends to concentrate at a few points, leading to excessive contact stress. This concentrated stress can easily cause indentations, scratches, and even more serious mechanical damage to the surface of the flexible waveguide. This surface damage not only affects aesthetics but also impairs its electromagnetic performance: on the one hand, the damaged metal surface increases the surface resistance of the conductor, resulting in increased insertion loss and accelerated energy attenuation of the signal during transmission; on the other hand, surface discontinuities can cause non-negligible signal reflections, leading to an increased voltage standing wave ratio (VSWR) and reduced transmission efficiency. In applications requiring high precision and reliability (such as spacecraft feed assemblies), this performance degradation introduced by the assembly process is unacceptable.

[0004] Therefore, there is an urgent need for a new type of three-jaw positioning device for processing soft vibration-damping waveguides, which can provide stable and reliable clamping force without damaging the surface integrity and electromagnetic transmission performance of the soft waveguide. Summary of the Invention

[0005] The purpose of this invention is to provide a three-jaw positioning device for processing soft vibration-damping waveguides, addressing the aforementioned shortcomings. This device solves the technical problem that traditional clamping equipment leaves scratches on the outer wall of the soft vibration-damping waveguide when clamping it, thus affecting the waveguide's microwave transmission performance.

[0006] This invention is achieved through the following scheme: A three-jaw positioning device for processing soft vibration-damping waveguides includes a docking vibration-damping seat as a support base, and one end of the docking vibration-damping seat is provided with a clamping mechanism for soft contact zero-damage clamping of microwave transmission ducts.

[0007] Based on the structure of the three-jaw positioning device for processing a soft vibration-damping waveguide described above, the clamping mechanism includes three clamping jaws that are equidistantly slidably connected to the end of the mating vibration-damping seat. The clamping jaws are arranged in a ring around the center of the clamping mechanism, and the central angle between adjacent clamping jaws is 120°; and the three clamping jaws are arranged facing each other.

[0008] Based on the structure of the three-jaw positioning device for processing soft vibration damping waveguide described above, a rigid substrate layer is sprayed on the opposite ends of several clamping jaws, a transition damping layer is sprayed on the outside of the rigid substrate layer, and a soft contact layer is sprayed on the outside of the transition damping layer.

[0009] Based on the structure of the three-jaw positioning device for processing soft vibration-damping waveguides described above, a stable limiting mechanism is provided at the end of the three clamping mechanisms away from the docking vibration-damping seat, and the docking vibration-damping seat is provided with a stable transmission mechanism for transmitting power to the clamping mechanism.

[0010] Based on the structure of the three-jaw positioning device for processing soft vibration damping waveguide described above, the transition damping layer is a polyurethane-carbon nanotube composite material, and the thickness of the transition damping layer is 2-5 mm.

[0011] Based on the structure of the three-jaw positioning device for processing soft vibration damping waveguide described above, the soft contact layer is made of superelastic silicone rubber, the thickness of the soft contact layer is 1-2 mm, and its surface is provided with micro-textures.

[0012] Based on the structure of the three-jaw positioning device for processing soft vibration damping waveguide described above, the stabilizing and limiting mechanism includes a limiting plate disposed at the top of the clamping jaw seat. Three guide grooves are equally spaced on the limiting plate. Limiting rod seats are slidably connected to the inner side of each guide groove. The limiting rod seats are respectively connected to the top of their corresponding clamping jaw seats.

[0013] Based on the structure of the three-jaw positioning device for processing soft vibration damping waveguide described above, the guide groove is generally arc-shaped, with one end of the guide groove located near the inner side of the limiting plate and the other end located near the outer side of the limiting plate.

[0014] Based on the structure of the three-jaw positioning device for processing soft vibration damping waveguide described above, the stable transmission mechanism includes three transmission motors equidistantly mounted on the outside of the docking vibration damping seat via a base. The transmission end of each transmission motor is connected to a harmonic reducer. The docking vibration damping seat has several adjusting grooves equidistantly opened at one end near the clamping jaw seat. A ball screw is rotatably connected to the inner side of each adjusting groove, and a docking seat is helically connected to the outer side of the ball screw.

[0015] Based on the structure of the three-jaw positioning device for processing soft vibration damping waveguide described above, the top of the docking seat is connected to the bottom of the adjacent clamping jaw seat, and one end of the ball screw is connected to the end of the adjacent harmonic reducer.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. Due to the clamping mechanism, the present invention absorbs the low-frequency vibration transmitted during the clamping process through the transition damping layer, thereby avoiding errors when the outer through hole of the conduit is opened. The soft contact layer can increase the contact area while avoiding stress concentration, thereby avoiding scratches on the outer surface of the soft vibration-damping waveguide.

[0017] 2. Due to the stable transmission mechanism, the clamping process of the clamping mechanism is more stable. The harmonic reducer and ball screw make the clamping positioning more accurate and can adapt to processing objects of different specifications.

[0018] 3. Due to the setting of the stabilizing limiting mechanism, the clamping process of the clamping mechanism is more stable, limiting the stability and synchronization of the three grippers during movement, and ensuring the accuracy during clamping. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the limiting disk installation structure of the present invention; Figure 3 This is a schematic diagram of the installation structure of the limiting rod seat of the present invention; Figure 4 This is a schematic diagram of the drive motor mounting structure of the present invention; Figure 5 This is a schematic diagram of the clamping claw seat mounting structure of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram at point A; Reference numerals: 1. Dating damping seat; 2. Clamping mechanism; 21. Clamping claw seat; 22. Rigid substrate layer; 23. Transition damping layer; 24. Soft contact layer; 3. Stabilizing limiting mechanism; 31. Limiting disc; 32. Guide groove; 33. Limiting rod seat; 4. Stabilizing transmission mechanism; 41. Drive motor; 42. Harmonic reducer; 43. Adjusting groove; 44. Ball screw; 45. Dating seat. Detailed Implementation

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a predetermined orientation, or be constructed and operated in a predetermined orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] Example 1 Existing three-jaw positioning devices, due to the concentrated clamping force of traditional metal jaws, are prone to leaving indentations or scratches on the pipe surface, affecting microwave transmission performance, such as increasing surface resistance and reflection loss. Please refer to... Figures 1-6This embodiment provides a three-jaw positioning device for processing soft vibration-damping waveguides, solving the technical problem that traditional clamping equipment leaves scratches on the outer wall of the waveguide when clamping it, thus affecting the microwave transmission performance of the waveguide. The device includes a docking vibration-damping base 1 as a supporting foundation. One end of the docking vibration-damping base 1 is equipped with a clamping mechanism 2 for soft contact-type zero-damage clamping of the microwave transmission waveguide. The clamping mechanism 2 is equipped with a stabilizing limiting mechanism 3 to limit the stability and synchronization of the three clamping jaws 21 during movement. The docking vibration-damping base 1 is equipped with a stabilizing transmission mechanism 4 for transmitting power to the clamping mechanism 2. The waveguide is clamped by the clamping mechanism 2, the clamping process is limited by the stabilizing limiting mechanism 3, and power is provided to the clamping mechanism 2 by the stabilizing transmission mechanism 4.

[0025] The clamping mechanism 2 includes three clamping claw seats 21 that are equidistantly slidably connected to the end of the mating damping seat 1. The opposite ends of the clamping claw seats 21 are coated with a rigid substrate layer 22. A transition damping layer 23 is coated on the outside of the rigid substrate layer 22. A soft contact layer 24 is coated on the outside of the transition damping layer 23. To absorb low- and mid-frequency vibrations during operation, the clamping mechanism 2 includes three clamping claw seats 21 that are equidistantly slidably connected to the ends of the mating damping seat 1. Each clamping claw seat 21 has a rigid substrate layer 22 sprayed onto its opposite ends. A transition damping layer 23 is sprayed onto the outside of the rigid substrate layer 22, and a soft contact layer 24 is sprayed onto the outside of the transition damping layer 23. The transition damping layer 23 is a polyurethane-carbon nanotube composite material of Shore A30-40 with a thickness of 2-5 mm. The soft contact layer 24 is a superelastic silicone rubber of Shore A10-15 with a thickness of 1-2 mm. The surface micro-texture design increases the coefficient of friction μ≥0.8.

[0026] During operation, the soft vibration-damping waveguide is clamped and fixed by the clamping mechanism 2. Through the coordinated design of gradient elastic materials and dynamic damping structures, uniform distribution of clamping force and isolation of high-frequency vibration are achieved, ensuring zero damage to the microwave pipe processing surface. Simultaneously, it meets positioning accuracy (±0.005mm) and vibration resistance performance (vibration transmissibility ≤15%). The soft contact layer 24 adopts a biomimetic micro-pit structure (diameter 0.1~0.3mm, depth 0.05mm) to increase the contact area while avoiding stress concentration. The pipe clamping pressure is ≤0.3MPa. The transition damping layer 23 embeds a piezoresistive damping sheet, converting the 20Hz~1kHz vibration energy into electrical energy for storage, powering the force control system.

[0027] Example 2 Based on Example 1, Example 1 solved the technical problem that traditional clamping devices leave scratches on the outer wall of soft vibration-damping waveguides when clamping them, thus affecting the microwave transmission performance of the waveguides. However, it still suffers from the problem of unstable clamping process. Combined with... Figures 1-6 As shown, the specific implementation process is as follows: The stabilizing limiting mechanism 3 includes a limiting plate 31 set at the top of several clamping claw seats 21. Three guide grooves 32 are equally spaced on the limiting plate 31. Limiting rod seats 33 are slidably connected to the inner side of several guide grooves 32. Several limiting rod seats 33 are respectively connected to the top of several clamping claw seats 21.

[0028] The stabilizing transmission mechanism 4 includes three transmission motors 41 that are equidistantly mounted on the outside of the docking damping seat 1 via a base. The transmission end of the transmission motors 41 is connected to a harmonic reducer 42. The docking damping seat 1 is provided with several adjusting grooves 43 at equal intervals on one end near the clamping claw seat 21. A ball screw 44 is rotatably connected to the inside of the adjusting groove 43, and a docking seat 45 is helically connected to the outside of the ball screw 44.

[0029] The top of the docking seat 45 is connected to the bottom of the adjacent clamping jaw seat 21, and one end of the ball screw 44 is connected to the end of the adjacent harmonic reducer 42.

[0030] During operation, the drive motor 41 drives the harmonic reducer 42 to rotate, which in turn drives the ball screw 44 connected to it to rotate. The ball screw 44 then drives the docking seat 45, which is helically connected to its outer side, to move. The docking seat 45 then drives the clamping jaw seat 21 connected to it to move inside the adjusting groove 43. During this process, the limiting plate 31 connected to the limiting rod seat 33 makes the adjustment process of the clamping jaw seat 21 more stable, synchronized, and more accurate.

[0031] Example 3 like Figures 1-6 As shown, the present invention provides a technical solution: A three-jaw positioning device for processing soft vibration-damping waveguides includes a docking vibration-damping seat 1 as a supporting base, and a clamping mechanism 2 for soft contact zero-damage clamping of microwave transmission conduits is provided at one end of the docking vibration-damping seat 1.

[0032] Based on the above structure, this solution achieves damage-free clamping of the microwave transmission conduit through a clamping mechanism set on the docking vibration damping seat 1.

[0033] As an example, the clamping mechanism 2 includes three clamping claw seats 21 that are equidistantly slidably connected to the end of the docking damping seat 1. The clamping claw seats 21 are arranged in a ring around the center of the clamping mechanism, and the central angle between adjacent clamping claw seats 21 is 120°; and the three clamping claw seats 21 are arranged facing each other.

[0034] Based on the above structure, this solution is provided with three opposing clamping claw seats 21. The three clamping claw seats 21 can slide synchronously to achieve stable and damage-free clamping of wave transmission ducts of different sizes.

[0035] As an example, a rigid substrate layer 22 is sprayed on the opposite ends of several of the clamping claw seats 21, a transition damping layer 23 is sprayed on the outside of the rigid substrate layer 22, and a soft contact layer 24 is sprayed on the outside of the transition damping layer 23.

[0036] Based on the above structure, by providing a rigid substrate layer 22, a transition damping layer 23 and a soft contact layer 24 on the contact layer between the clamping claw seat 21 and the wave transmission conduit, the wave transmission conduit can be effectively protected during the clamping process.

[0037] As an example, the ends of the three clamping mechanisms 2 away from the docking damping seat 1 are provided with stabilizing limiting mechanisms 3 to limit the stability and synchronicity of the three clamping claw seats 21 during movement. The docking damping seat 1 is provided with a stabilizing transmission mechanism 4 for transmitting power to the clamping mechanism 2.

[0038] The stabilizing limiting mechanism 3 includes a limiting disk 31 disposed at the top of the clamping claw seat 21. Three guide grooves 32 are equally spaced on the limiting disk 31. Limiting rod seats 33 are slidably connected to the inner side of each guide groove 32. The limiting rod seats 33 are respectively connected to the top of their corresponding clamping claw seats 21.

[0039] The guide chute 32 has an overall arc-shaped structure. One end of the guide chute 32 is located near the inner side of the limiting plate 31, and the other end is located near the outer side of the limiting plate 31.

[0040] Based on the above structure, the three guide grooves 32 set on a limiting plate 31 in this solution realize the synchronous operation of the three gripping claw seats 21. The curvature of the three guide grooves on the limiting plate is consistent. When each gripping claw seat 21 is driven to move in a straight line, the guide groove will restrict it, so that the three gripping claw seats 21 run synchronously.

[0041] As an example, the transition damping layer 23 is a polyurethane-carbon nanotube composite material, and the thickness of the transition damping layer 23 is 2-5 mm.

[0042] The soft contact layer 24 is made of superelastic silicone rubber, and the thickness of the soft contact layer 24 is 1-2 mm, with micro-textures on its surface.

[0043] As an example, the stabilizing transmission mechanism 4 includes three transmission motors 41 that are equidistantly mounted on the outside of the docking damping seat 1 via a base. The transmission end of each transmission motor 41 is connected to a harmonic reducer 42. The docking damping seat 1 has several adjusting grooves 43 equidistantly opened at one end near the clamping claw seat 21. A ball screw 44 is rotatably connected to the inside of each adjusting groove 43, and a docking seat 45 is helically connected to the outside of the ball screw 44.

[0044] The top of the docking seat 45 is connected to the bottom of the adjacent clamping jaw seat 21, and one end of the ball screw 44 is connected to the end of the adjacent harmonic reducer 42.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-jaw positioning device for processing soft vibration-damping waveguides, comprising a docking vibration-damping base (1) as a supporting foundation, characterized in that: The docking damping seat (1) is provided with a clamping mechanism (2) for soft contact zero-damage clamping of microwave transmission conduit at one end.

2. The three-jaw positioning device for processing soft vibration-damping waveguides according to claim 1, characterized in that: The clamping mechanism (2) includes three clamping claw seats (21) that are equidistantly slidably connected to the end of the docking damping seat (1). The clamping claw seats (21) are arranged in a ring around the center of the clamping mechanism, and the central angle between adjacent clamping claw seats (21) is 120°. The three clamping claw seats (21) are arranged facing each other.

3. The three-jaw positioning device for processing soft vibration-damping waveguides as described in claim 2, characterized in that: A rigid substrate layer (22) is sprayed on the opposite ends of several of the clamping claw seats (21), a transition damping layer (23) is sprayed on the outside of the rigid substrate layer (22), and a soft contact layer (24) is sprayed on the outside of the transition damping layer (23).

4. The three-jaw positioning device for processing soft vibration-damping waveguides according to claim 3, characterized in that: The ends of the three clamping mechanisms (2) away from the docking damping seat (1) are provided with stabilizing limiting mechanisms (3), and the docking damping seat (1) is provided with stabilizing transmission mechanisms (4) for transmitting power to the clamping mechanisms (2).

5. A three-jaw positioning device for processing soft vibration-damping waveguides according to claim 3 or 4, characterized in that: The transition damping layer (23) is a polyurethane-carbon nanotube composite material, and the thickness of the transition damping layer (23) is 2-5 mm.

6. A three-jaw positioning device for processing soft vibration-damping waveguides according to claim 3 or 4, characterized in that: The soft contact layer (24) is a superelastic silicone rubber with a thickness of 1-2 mm and a surface textured with micro-textures.

7. A three-jaw positioning device for processing soft vibration-damping waveguides according to claim 4, characterized in that: The stabilizing limiting mechanism (3) includes a limiting plate (31) set at the top of the clamping claw seat (21). Three guide grooves (32) are equally spaced on the limiting plate (31). Limiting rod seats (33) are slidably connected to the inner side of each guide groove (32). The limiting rod seats (33) are respectively connected to the top of their corresponding clamping claw seats (21).

8. The three-jaw positioning device for processing soft vibration-damping waveguides as described in claim 7, characterized in that: The guide groove (32) is an arc-shaped structure. One end of the guide groove (32) is located near the inner side of the limiting plate (31), and the other end is located near the outer side of the limiting plate (31).

9. A three-jaw positioning device for processing soft vibration-damping waveguides according to claim 4, characterized in that: The stabilizing transmission mechanism (4) includes three transmission motors (41) that are equidistantly mounted on the outside of the docking damping seat (1) via a base. The transmission end of the transmission motor (41) is connected to a harmonic reducer (42). The docking damping seat (1) has several adjusting grooves (43) equidistantly opened at one end near the clamping claw seat (21). The inner side of the adjusting groove (43) is rotatably connected to a ball screw (44), and the outer side of the ball screw (44) is helically connected to a docking seat (45).

10. A three-jaw positioning device for processing soft vibration-damping waveguides according to claim 9, characterized in that: The top of the docking seat (45) is connected to the bottom of the adjacent clamping jaw seat (21), and one end of the ball screw (44) is connected to the end of the adjacent harmonic reducer (42).

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