Fixing clamp for machining four-axis connecting piece of unmanned aerial vehicle

Abstract

The utility model discloses a stationary fixture for unmanned aerial vehicle four-axis connecting piece machining, and relates to the technical field of stationary fixtures, the stationary fixture comprises a machining platform, an annular groove is formed in the machining platform, a limiting ring is rotatably installed in the annular groove formed in the machining platform, and a rotating table is fixedly installed on the limiting ring; a second convex sliding groove is formed in the rotating table, and a sliding table is installed in the second convex sliding groove formed in the rotating table in a limiting and sliding mode. According to the four-axis connecting piece clamping device, through cooperation of the adjusting screw rod and the second convex sliding groove, the sliding table can transversely and accurately move along the rotating table, the four-axis connecting pieces with different lengths can be rapidly matched, and the clamping module does not need to be manually replaced; the remodeling time in small-batch multi-variety production is remarkably shortened, the equipment utilization rate is increased, the rotating table is rotationally connected with the annular groove of the machining platform through the limiting ring, multi-angle locking can be achieved through the cooperation of the rotating table and the positioning screw, the multi-directional machining requirement is met, the repeated clamping frequency of workpieces is reduced, and the machining process is optimized.

Description

Technical Field

[0001] This utility model relates to the field of fixing fixture technology, and in particular to a fixing fixture for processing quadcopter connectors for unmanned aerial vehicles. Background Technology

[0002] A drone is an unmanned aerial vehicle controlled by radio remote control equipment or autonomous program control device, and is widely used in aerial photography, logistics, agricultural monitoring and other fields. Its quadcopter structure, as the core load-bearing and power transmission component, achieves reliable connection of propellers, motors and fuselage frame through connectors. Therefore, the machining accuracy of the quadcopter connectors directly determines the drone's flight stability, load capacity and safety.

[0003] Existing drone quadcopter connectors mainly include the following structures:

[0004] Propeller assembly: used to install propeller blades, typically includes a central shaft hole and a positioning slot, which must be precisely matched with the motor shaft;

[0005] Support shaft assembly: As the supporting frame of the four-axis structure, it is mostly a hollow rod-shaped structure with threaded holes or flanges at both ends for connecting the fuselage and propeller assembly;

[0006] Connecting arm: A rigid component that connects the center of the machine body to the support shaft. Its cross-sectional shape is mostly circular or rectangular, and its surface needs to be machined with mounting grooves and weight-reducing holes.

[0007] Mounting bracket: Used to fix components such as motors and sensors. It is equipped with positioning bosses and bolt holes and needs to be welded or screwed to the support shaft or connecting arm.

[0008] In existing technologies, for connectors of different specifications (such as support shafts of different lengths and connecting arms of different diameters), it is necessary to manually change the clamping module or adjust the clamping spacing, which is cumbersome and time-consuming. Especially in small-batch, multi-variety production scenarios, frequent model changes lead to reduced equipment utilization. Rigid clamping components (such as metal jaws and pressure plates) directly contact the workpiece surface, which can easily cause indentations and scratches to lightweight materials such as aluminum alloys and carbon fibers during clamping. In particular, for support shaft components that require anodizing treatment, damage may lead to a decrease in corrosion resistance or appearance defects, increasing the scrap rate. Utility Model Content

[0009] Technical problems to be solved

[0010] To address the shortcomings of existing technologies, this utility model provides a fixing fixture for machining quadcopter connectors for unmanned aerial vehicles (UAVs). This solves the problem that in existing technologies, for connectors of different specifications (such as support shafts of different lengths or connecting arms of different diameters), manual replacement of clamping modules or adjustment of clamp spacing is required. This operation is cumbersome and time-consuming, especially in small-batch, multi-variety production scenarios, where frequent model changes lead to reduced equipment utilization. Rigid clamping components (such as metal jaws and pressure plates) directly contact the workpiece surface, easily causing indentations and scratches to lightweight materials such as aluminum alloys and carbon fibers during clamping. This is particularly problematic for support shaft assemblies requiring anodizing treatment; damage can lead to decreased corrosion resistance or aesthetic defects, increasing the scrap rate.

[0011] Technical solution

[0012] To achieve the above objectives, this utility model provides the following technical solution:

[0013] A fixing fixture for machining quadcopter connectors for unmanned aerial vehicles (UAVs) includes a machining platform with an annular groove. A limiting ring is rotatably mounted in the annular groove, and a rotary table is fixedly mounted on the limiting ring. A second convex groove is formed on the rotary table, and a sliding table is slidably mounted within the second convex groove. An adjusting screw is threaded through the sliding table and rotatably mounted on the rotary table. A first convex groove is formed on the sliding table, and two clamping plates are slidably mounted within the first convex groove. A positioning screw is threaded through the machining platform and fits against the surface of the limiting ring.

[0014] Preferably, a clamping screw is threaded through and installed between the two clamping plates. The clamping screw has a left-hand thread with the clamping plate on the left and a right-hand thread with the clamping plate on the right. A propeller assembly is provided between the two clamping plates.

[0015] Preferably, the propeller assembly is provided with a support shaft assembly, and a locking screw is slidably installed through the end of the support shaft assembly. The locking screw is threaded onto the processing platform, and a heightening pad is provided between the support shaft assembly and the processing platform. The locking screw is installed through the heightening pad.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this new invention, by adjusting the screw and the second convex groove, the sliding table can move precisely laterally along the rotary table, quickly adapting to four-axis connectors of different lengths (such as support shaft assemblies), eliminating the need for manual replacement of clamping modules, significantly reducing changeover time in small-batch, multi-variety production, and improving equipment utilization. The rotary table forms a rotational connection with the annular groove of the processing platform through a limiting ring, and with the help of the positioning screw, multi-angle locking can be achieved to meet multi-directional processing needs, reduce the number of times the workpiece is repeatedly clamped, and optimize the processing flow.

[0018] In this new invention, the clamping plate achieves synchronous centering and clamping through the left and right thread design of the clamping screw, avoiding workpiece deformation caused by traditional single-sided clamping. Moreover, the clamping force is evenly distributed in non-sensitive areas such as the central shaft hole of the propeller assembly, reducing direct damage to the surface of lightweight materials such as aluminum alloy and carbon fiber. The support shaft assembly adopts a non-contact fixing method with the locking screw passing through the positioning hole, replacing the traditional structure of directly clamping the rod with rigid claws. This avoids indentations and scratches on the support shaft that requires anodizing treatment, reducing the scrap rate and improving the workpiece's corrosion resistance and appearance qualification rate. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a structural diagram of the entire utility model;

[0021] Figure 2 This is a structural diagram of the processing platform of this utility model;

[0022] Figure 3 This is a structural diagram of the rotary table of this utility model;

[0023] Figure 4 This is a structural diagram of the sliding table of this utility model.

[0024] Legend: 11. Rotary table; 12. Limiting ring; 13. First convex groove; 14. Second convex groove; 15. Sliding table; 16. Adjusting screw; 17. Clamping plate; 18. Clamping screw; 21. Propeller assembly; 22. Support shaft assembly; 23. Machining platform; 24. Annular groove; 25. Positioning screw; 26. Heightening pad; 27. Locking screw. Detailed Implementation

[0025] This application provides a fixing fixture for machining quadcopter connectors for drones, effectively solving the technical problems in the prior art. For connectors of different specifications, such as support shafts of different lengths or connecting arms of different diameters, manual replacement of clamping modules or adjustment of clamp spacing is required, which is cumbersome and time-consuming. This is especially problematic in small-batch, multi-variety production scenarios, where frequent model changes reduce equipment utilization. Rigid clamping components, such as metal jaws and pressure plates, directly contact the workpiece surface, easily causing indentations and scratches on lightweight materials like aluminum alloys and carbon fibers during clamping. This is particularly problematic for support shaft assemblies requiring anodizing, as damage can lead to decreased corrosion resistance or aesthetic defects, increasing the scrap rate.

[0026] Example

[0027] like Figures 1-4 As shown, the technical solution in this application aims to effectively address the existing technology's problem that, for connectors of different specifications, such as support shafts of different lengths and connecting arms of different diameters, manual replacement of clamping modules or adjustment of clamp spacing is required. This operation is cumbersome and time-consuming, especially in small-batch, multi-variety production scenarios, where frequent model changes lead to reduced equipment utilization. Rigid clamping components, such as metal jaws and pressure plates, directly contact the workpiece surface, easily causing indentations and scratches to lightweight materials such as aluminum alloys and carbon fibers during clamping. This is particularly problematic for support shaft assemblies requiring anodizing treatment, where damage can lead to decreased corrosion resistance or unacceptable appearance, increasing the scrap rate. The overall approach is as follows:

[0028] To address the problems existing in the prior art, this utility model provides a fixing fixture for processing quadcopter connectors for unmanned aerial vehicles, including a processing platform 23 as a basic support platform, which provides a stable installation reference for the overall structure and ensures that each component is subjected to uniform force during processing. The processing platform 23 is provided with an annular groove 24, which is used to rotate and install the limiting ring 12 and form a rotating pair, providing space for multi-angle adjustment of the rotary table 11.

[0029] A limiting ring 12 is rotatably installed inside the annular groove 24. It not only supports the rotational movement of the rotary table 11, but also locks the angle by pressing against the surface with the positioning screw 25, so as to avoid the impact of the rotation table 11 shaking on the accuracy during processing. The rotary table 11 is fixedly installed on the limiting ring 12. This platform is used to support the clamping mechanism and adjust the workpiece processing position by rotation, thereby reducing the number of repeated clamping and improving efficiency.

[0030] The rotary table 11 has a second convex groove 14, which limits the sliding table 15 laterally, so that the sliding table 15 can only slide along the groove. The sliding table 15 is slidably installed in the second convex groove 14. It moves laterally along the groove through the thread drive of the adjusting screw 16, so as to realize the fine adjustment of the position of the clamping mechanism to adapt to four-axis connecting parts of different lengths. The adjusting screw 16 is threaded through the sliding table 15 and is rotatably installed on the rotary table 11. By rotating the screw, the sliding table 15 can be driven to move precisely, which is convenient to operate and has stable positioning.

[0031] The sliding table 15 is also provided with a first convex groove 13, which guides and limits the two clamping plates 17 to ensure that the two plates move synchronously along a straight line to apply force evenly. Two clamping plates 17 are slidably installed in the first convex groove 13. The two plates directly contact and clamp the propeller assembly 21. Symmetrical clamping avoids deformation of the workpiece due to unilateral force.

[0032] A clamping screw 18 is threaded through the two clamping plates 17. The screw has a left-hand thread with the left clamping plate 17 and a right-hand thread with the right clamping plate 17. When rotated, it drives the two plates to move synchronously towards or away from each other, achieving rapid centering and clamping. A positioning screw 25 is threaded through the machining platform 23. The screw fits against the surface of the limiting ring 12 and is used to lock the angle of the rotary table 11 to ensure that the orientation is fixed during machining.

[0033] The propeller assembly 21 held by the fixture is a quadcopter connector for a UAV to be processed. It is equipped with a support shaft assembly 22. This shaft supports the propeller assembly 21 and disperses the clamping force to avoid damage caused by direct clamping of the rod. A locking screw 27 is slidably installed through the end of the support shaft assembly 22. The screw is threaded onto the processing platform 23 and passes through the shaft positioning hole to achieve axial fixation of the workpiece. The non-contact clamping protects the shaft surface from being damaged by clamping.

[0034] A heightening pad 26 is provided between the support shaft assembly 22 and the processing platform 23. The installation height of the support shaft is adjusted by stacking shims of different thicknesses. It is compatible with various specifications of propeller assemblies 21. The locking screw 27 is installed through the heightening pad 26 to fix the shim, support shaft and processing platform 23 into one piece, so as to avoid vibration caused by gap after height adjustment.

[0035] Working principle:

[0036] The first step is to place the propeller assembly 21 of the UAV between two clamping plates 17. By rotating the clamping screw 18, the screw is connected to the clamping plate 17. The left side is a left-hand thread and the right side is a right-hand thread. This drives the two clamping plates 17 to move synchronously towards each other along the first convex slide groove 13, thereby achieving stable clamping of the propeller assembly 21 and avoiding workpiece deformation caused by unilateral force.

[0037] The second step is to align the screw hole of the support shaft assembly 22 with the locking screw 27, so that the screw passes through the screw hole to complete the initial positioning. According to the actual height of the propeller assembly 21, the lifting pad 26 is stacked on the bottom of the support shaft assembly 22 and adjusted to the height required for workpiece processing. The locking screw 27 is then tightened so that it passes through the lifting pad 26 and the processing platform 23 in sequence and is threadedly connected to the platform. The support shaft assembly 22 is fixed by axial pressure to avoid direct clamping of the rod and to protect the workpiece surface from damage.

[0038] Third, rotate the adjusting screw 16 to drive the sliding table 15 to slide along the second convex groove 14 of the rotary table 11, adjust the lateral position of the clamping mechanism to adapt to four-axis connectors of different lengths, loosen the positioning screw 25 on the processing platform 23, manually rotate the limiting ring 12 to drive the rotary table 11 to rotate in the annular groove 24, adjust to the target angle according to the processing requirements, and then tighten the positioning screw 25 to fix it, realize multi-angle processing, improve operation efficiency, and ensure clamping accuracy and stability through the combination of thread transmission and groove limiting. The non-contact fixed support shaft assembly 22 avoids damage to the rod to the traditional clamping. The rotation adjustment structure supports multi-angle processing angle switching, reduces the number of workpiece disassembly times, and optimizes the processing flow.

[0039] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fixing fixture for machining quadcopter connectors for unmanned aerial vehicles, comprising a machining platform (23), characterized in that: The processing platform (23) has an annular groove (24). A limiting ring (12) is rotatably installed in the annular groove (24) of the processing platform (23). A rotating table (11) is fixedly installed on the limiting ring (12). A second convex sliding groove (14) is opened on the rotating table (11). A sliding table (15) is slidably installed in the second convex sliding groove (14) of the rotating table (11). An adjusting screw (16) is threaded through the sliding table (15). The adjusting screw (16) is rotatably installed on the rotating table (11). A first convex sliding groove (13) is opened on the sliding table (15). Two clamping plates (17) are slidably installed in the first convex sliding groove (13) of the sliding table (15). A positioning screw (25) is threaded through the processing platform (23). The positioning screw (25) is attached to the surface of the limiting ring (12).

2. The fixing fixture for machining a quadcopter connector for a UAV according to claim 1, characterized in that: A clamping screw (18) is threaded through and installed between the two clamping plates (17).

3. A fixing fixture for machining a quadcopter connector for a UAV according to claim 2, characterized in that: The clamping screw (18) and the clamping plate (17) located on the left side have a left-hand thread; The clamping screw (18) and the clamping plate (17) located on the right side have a right-hand thread.

4. A fixing fixture for machining a quadcopter connector for a UAV according to claim 3, characterized in that: A propeller assembly (21) is provided between the two clamping plates (17).

5. A fixing fixture for machining a quadcopter connector for a UAV according to claim 4, characterized in that: The propeller assembly (21) is provided with a support shaft assembly (22), and a locking screw (27) is slidably mounted through the end of the support shaft assembly (22).

6. A fixing fixture for machining a quadcopter connector for a UAV according to claim 5, characterized in that: The locking screw (27) is threaded onto the machining platform (23).

7. A fixing fixture for machining a quadcopter connector for a UAV according to claim 6, characterized in that: A heightening pad (26) is provided between the support shaft assembly (22) and the machining platform (23).

8. A fixing fixture for machining a quadcopter connector for a UAV according to claim 7, characterized in that: The locking screw (27) is mounted through the heightening pad (26).

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