Unmanned aerial vehicle paddle machining clamp

Abstract

The utility model discloses an unmanned aerial vehicle paddle processing clamp which comprises a mounting seat, paddles and a cover plate, the mounting seat comprises a mounting seat main body structure, and four groups of paddle processing limiting holes for limiting and placing the paddles are symmetrically formed in the surface of the mounting seat main body structure; by integrally limiting the front edge of the paddle, the rear edge of the paddle, the root area of the lower surface of the paddle, the lower surface of the paddle root and the upper surface of the paddle root, the paddle is accurately clamped and positioned, so that a paddle mounting hole is accurately machined, the hole position is not inclined, and the unbalance amount generated by rotation eccentricity of the paddle due to inaccurate machining of the mounting hole position of the paddle is favorably eliminated; four sets of paddle machining limiting holes are formed in the mounting base body structure and matched with the cover plate through the cover plate mounting face, that is, one set of machining clamp can machine four sets of paddles at the same time, the machining efficiency of the paddle machine is improved, and if the efficiency needs to be further improved, more paddle machining limiting holes can be formed according to actual production.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a UAV blade processing fixture. Background Art

[0002] Drones are widely used in various fields, including entertainment and consumption, agricultural and forestry protection, inspection and mapping, security, emergency rescue, and material transportation. Propellers are key components of drone power. After the blades are molded, the mounting holes need to be machined. The design of the machining fixture significantly affects the positioning accuracy of the mounting holes.

[0003] For example, a propeller punching device for a drone model aircraft (Announcement No.: CN214559112U) includes a propeller body and a waste box, wherein the waste box is movably connected to a waste box inside, an inlet and outlet are provided on the right side of the waste box, the bottom of the waste box is fixedly connected to the top of the bracket, the surface of the bracket is fixedly connected to a U-shaped frame, the U-shaped frame is movably connected to a tilting rod via a rotating shaft, one end of the tilting rod is fixedly connected to a foot pedal, the other end of the tilting rod is fixedly connected to a ball pin, the bottom of the ball pin is fixedly connected to the top of a tension spring, and the tension spring is fixedly connected to the surface of the bracket. The utility model solves the problem that the clamp cannot stably fix the propeller during the punching process by providing a clamping block, a workbench, an internal threaded block, a first threaded rod and a second threaded rod, and the problem that the position of the blade hole may be offset during the punching process due to unstable fixation during the drilling process, thereby reducing the processing quality of the propeller.

[0004] Based on the search of the above patents and combined with the equipment in the prior art, it was found that when the above equipment is used, the fixture to fix the propeller relies on manual cranking of the handle to clamp the propeller. This step is not only time-consuming and labor-intensive, but may also lead to inconsistent clamping due to uneven strength or unskilled operation of the operator, thereby affecting the accuracy of the punching. In addition, only one group of propellers can be clamped and fixed at a time, and the efficiency of punching blade holes is relatively low. Therefore, we need to propose a UAV blade processing fixture. Utility Model Content

[0005] The purpose of the present invention is to provide a UAV blade processing fixture, which has the advantages of accurate positioning and improved processing efficiency, so as to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A drone blade processing fixture includes a mounting base, a blade, and a cover plate. The mounting base includes a mounting base main structure. The surface of the mounting base main structure is symmetrically provided with four groups of blade processing limit holes for limiting the placement of the blade. The blade processing limit holes are composed of a blade leading edge limit surface, a blade trailing edge limit surface, a blade lower surface limit surface, and a blade root lower surface limit surface. The mounting base main structure is provided with a cover plate mounting surface on the surface of the four groups of blade root lower surface limit surfaces.

[0008] The cover plate includes a lower surface of the cover plate that cooperates with the blade to process the limiting holes to limit and fix the blade. Several groups of mounting screws are arranged on the lower surface of the cover plate. A drill hole for drilling the blade is opened on the lower surface of the cover plate.

[0009] Preferably, the blade is composed of a blade leading edge, a blade trailing edge, a root area of ​​the blade lower surface, a blade root lower surface, a blade mounting hole and a blade root upper surface, and a mutual clearance fit is provided between the blade leading edge and the blade leading edge limiting surface, and a mutual clearance fit is provided between the blade trailing edge and the blade trailing edge limiting surface.

[0010] Preferably, the root area of ​​the lower surface of the blade and the limiting surface of the lower surface of the blade are in contact and fit tightly with each other, and the lower surface of the blade root and the limiting surface of the lower surface of the blade root are in contact and fit tightly with each other.

[0011] Preferably, the inner bottom of the cover mounting surface is provided with cover mounting threaded holes corresponding to several groups of mounting screws, the lower surface of the cover is bolted and fixed to the cover mounting threaded holes by the mounting screws, and the lower surface of the cover is tightly fitted with the upper surface of the propeller root.

[0012] Preferably, a machining avoidance groove is provided on the inner bottom of the limiting surface of the lower surface of the blade root of the main structure of the mounting seat, and the machining avoidance groove is arranged corresponding to the drill bit through hole.

[0013] Preferably, the four groups of blade processing limit holes are composed of two groups of forward rotating blade limit holes and two groups of reverse rotating blade limit holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The present invention achieves accurate blade clamping and positioning by integrally constraining the leading edge, trailing edge, lower surface root area, lower root surface, and upper root surface of the blade. This ensures that the blade mounting holes are accurately machined and the holes are not skewed, helping to eliminate blade imbalance caused by eccentric rotation due to inaccurate machining of the mounting holes.

[0016] 2. Four sets of blade processing limit holes are set through the main structure of the mounting seat. The blade processing limit holes are matched with the cover plate through the cover plate mounting surface, that is, a set of processing fixtures can process four sets of blades at the same time, which improves the blade machining efficiency. If the efficiency needs to be further improved, more blade processing limit holes can be set according to actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall assembly of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of a mounting base according to an embodiment of the present utility model;

[0019] Figure 3 Schematic diagram of a cover plate according to an embodiment of the present invention.

[0020] In the figure: 1. Mounting seat; 2. Blade; 3. Cover plate; 11. Blade leading edge limit surface; 12. Blade trailing edge limit surface; 13. Blade lower surface limit surface; 14. Blade root lower surface limit surface; 15. Processed avoidance groove; 16. Cover plate mounting surface; 17. Cover plate mounting threaded hole; 18. Mounting seat main structure; 21. Blade leading edge; 22. Blade trailing edge; 23. Blade lower surface root area; 24. Blade root lower surface; 25. Blade mounting hole; 26. Blade root upper surface; 31. Drill hole; 32. Cover plate lower surface; 33. Mounting screw. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] This embodiment provides a UAV blade processing fixture, referring to Figure 1 、 2 and 3, comprising a mounting base 1, a blade 2 and a cover plate 3, the mounting base 1 comprising a mounting base main structure 18, the surface of the mounting base main structure 18 being symmetrically provided with four groups of blade processing limit holes for limiting the placement of the blade 2, the blade processing limit holes being composed of a blade leading edge limit surface 11, a blade trailing edge limit surface 12, a blade lower surface limit surface 13 and a blade root lower surface limit surface 14, the mounting base main structure 18 being located on the surface of the four groups of blade root lower surface limit surfaces 14 with a cover plate mounting surface 16;

[0023] The cover plate 3 includes a lower surface 32 that cooperates with the blade's limited holes to limit and fix the blade 2. The lower surface 32 of the cover plate is provided with several groups of mounting screws 33. The lower surface 32 of the cover plate is provided with a drill hole 31 for drilling the blade 2:

[0024] In this embodiment, reference Figure 1 、 2 and 3. The blade 2 is composed of a blade leading edge 21, a blade trailing edge 22, a root area 23 on the lower surface of the blade, a blade root lower surface 24, a blade mounting hole 25 and a blade root upper surface 26. A mutual clearance is provided between the blade leading edge 21 and the blade leading edge limit surface 11, and a mutual clearance is provided between the blade trailing edge 22 and the blade trailing edge limit surface 12, thereby limiting the relative position of the blade 2 in the horizontal plane.

[0025] In this embodiment, reference Figure 2 and 3 The root area 23 of the lower surface of the blade is composed of the blade root to the position close to the maximum chord length of the blade. The root area 23 of the lower surface of the blade is in contact and tightly fitted with the blade lower surface limiting surface 13, and the blade root lower surface 24 is in contact and tightly fitted with the blade root lower surface limiting surface 14, thereby limiting the relative position of the blade 2 in the vertical direction.

[0026] In this embodiment, reference Figure 1 、 2 and 3. The inner bottom of the cover mounting surface 16 is provided with cover mounting threaded holes 17 corresponding to several groups of mounting screws 33. The lower surface 32 of the cover is bolted to the cover mounting threaded holes 17 by the mounting screws 33, and the lower surface 32 of the cover is tightly fitted with the upper surface 26 of the propeller root. The blade 2 is limited and fixed by the lower surface 32 of the cover, and the mounting screws 33 cooperate with the cover mounting threaded holes 17 to facilitate the disassembly and assembly of the lower surface 32 of the cover.

[0027] In this embodiment, reference Figure 2 and 3 The main structure 18 of the mounting seat is located at the inner bottom of the limiting surface 14 on the lower surface of the blade root, and a processing avoidance groove 15 is opened. The processing avoidance groove 15 is arranged corresponding to the drill bit through hole 31, so as to effectively process the blade mounting hole 25 into place and prevent the machine tool drill bit from drilling damage to the main structure 18 of the mounting seat.

[0028] In this embodiment, reference Figure 1 and 2 The four groups of blade processing limit holes are composed of two groups of forward rotating blade limit holes and two groups of reverse rotating blade limit holes, that is, one set of processing fixture can process four groups of blades 2 at the same time, thereby improving the processing efficiency of blade 2.

[0029] Working principle: When the present invention is used, four groups of blades 2 are placed in sequence into the four groups of blade processing limit holes on the mounting seat main structure 18, so that the root area 23 of the blade lower surface of the blade 2 is in close contact with the blade lower surface limit surface 13, and the blade root lower surface 24 is in close contact with the blade root lower surface limit surface 14, and then the cover plate lower surface 32 is installed on the cover plate mounting surface 16 by installing screws 33, so that the cover plate lower surface 32 is tightly matched with the blade root upper surface 26, and the blade 2 is limited and fixed by the cover plate lower surface 32, and the blade 2 is processed and formed into a blade mounting hole 25 by the machine tool drill bit descending through the drill bit through the hole 31.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A UAV blade processing fixture, comprising a mounting base (1), a blade (2) and a cover plate (3), characterized in that: The mounting seat (1) includes a mounting seat main structure (18), and the surface of the mounting seat main structure (18) is symmetrically provided with four groups of blade processing limit holes for limiting the placement of the blade (2), and the blade processing limit holes are composed of a blade leading edge limit surface (11), a blade trailing edge limit surface (12), a blade lower surface limit surface (13) and a blade root lower surface limit surface (14), and the mounting seat main structure (18) is provided with a cover plate mounting surface (16) on the surface of the four groups of blade root lower surface limit surfaces (14); The cover plate (3) includes a cover plate lower surface (32) that cooperates with a blade processing limiting hole to limit and fix the blade (2), a plurality of groups of mounting screws (33) are provided on the cover plate lower surface (32), and a drill bit through hole (31) for drilling the blade (2) is opened on the cover plate lower surface (32).

2. The UAV blade processing fixture according to claim 1, characterized in that: The blade (2) is composed of a blade leading edge (21), a blade trailing edge (22), a blade lower surface root area (23), a blade root lower surface (24), a blade mounting hole (25) and a blade root upper surface (26); a mutual clearance fit is provided between the blade leading edge (21) and the blade leading edge limiting surface (11); and a mutual clearance fit is provided between the blade trailing edge (22) and the blade trailing edge limiting surface (12).

3. The UAV blade processing fixture according to claim 2, characterized in that: The blade lower surface root area (23) and the blade lower surface limiting surface (13) are in close contact with each other, and the blade root lower surface (24) and the blade root lower surface limiting surface (14) are in close contact with each other.

4. The UAV blade processing fixture according to claim 1, characterized in that: The inner bottom of the cover plate mounting surface (16) is provided with cover plate mounting threaded holes (17) corresponding to a plurality of groups of mounting screws (33); the cover plate lower surface (32) is bolted and fixed to the cover plate mounting threaded holes (17) by the mounting screws (33), and the cover plate lower surface (32) is tightly matched with the propeller root upper surface (26).

5. The UAV blade processing fixture according to claim 1, characterized in that: The mounting seat main structure (18) is provided with a machining avoidance groove (15) on the inner bottom of the limiting surface (14) on the lower surface of the blade root. The machining avoidance groove (15) is arranged corresponding to the drill bit through hole (31).

6. The UAV blade processing fixture according to claim 1, characterized in that: The four groups of blade processing limit holes are composed of two groups of forward rotating blade limit holes and two groups of reverse rotating blade limit holes.

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