Drilling tool for positioning pin of engine crankshaft of unmanned aerial vehicle
Patent Information
- Application Number
- CN202522075900.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-26
AI Technical Summary
这种无人机发动机曲轴定位销钻孔方式，每次只能固定一个曲轴，且每次需要安装和拆卸螺栓进行曲轴的固定和拆除，钻孔效率低下
1、本实用新型可以将多个曲轴依次放置在多个Ｍ形固定板上，通过旋压气缸的气缸压板按压在曲轴的曲轴连片上，无需螺栓固定曲轴，钻孔机依次对多个曲轴加工曲轴定位销安装孔。
Smart Images
Figure CN224713449U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crankshaft technology for unmanned aerial vehicle (UAV) engines, and in particular to a drilling tool for locating pins of UAV engine crankshafts. Background Technology
[0002] To prevent rotation between the crankshaft connecting plate and crankshaft pin of the drone engine, crankshaft locating pins need to be installed on both. Before installing the crankshaft locating pins, mounting holes for the crankshaft locating pins need to be machined on the crankshaft, i.e., drilling holes for the drone engine crankshaft locating pins. Currently, existing drone engine crankshaft locating pin drilling devices require first fixing the crankshaft to a machining base using bolts, and then drilling the crankshaft locating pins using a drilling machine. This method of drilling drone engine crankshaft locating pins can only fix one crankshaft at a time, and each time bolts need to be installed and removed to fix and remove the crankshaft, resulting in low drilling efficiency. Utility Model Content
[0003] The purpose of this utility model is to provide a drilling fixture for crankshaft positioning pins of unmanned aerial vehicle engines, so as to fix multiple crankshafts at one time and improve the drilling efficiency of crankshaft positioning pins.
[0004] The present invention provides a drilling fixture for crankshaft positioning pins of unmanned aerial vehicle engines, comprising a base on which a mounting seat is provided; support columns are provided at both ends of the mounting seat, and a limiting block is provided in the middle of the mounting seat; an M-shaped fixing plate is provided on the support columns and the limiting block, and a spinning cylinder is provided between the support columns and the limiting block, and between two adjacent limiting blocks; the two ends of the M-shaped fixing plate are provided on the support columns and / or the limiting blocks, and a spinning cylinder is provided in the middle of the M-shaped fixing plate; a cylinder pressure plate is provided at the upper end of the spinning cylinder.
[0005] Furthermore, the two ends of the M-shaped fixing plate are provided with crankshaft connecting plate positioning grooves, and the middle of the M-shaped fixing plate is provided with a spinning cylinder clearance groove.
[0006] Furthermore, the crankshaft connecting plate positioning groove is provided with a positioning pin clearance groove that is adapted to the crankshaft positioning pin.
[0007] Furthermore, the spinning cylinder is connected to a pneumatic control switch via an air pipe.
[0008] Furthermore, the support column and the limiting block are at the same height and are set horizontally.
[0009] Furthermore, the mounting base is provided with 2-6 rows of spinning cylinders, and a crankshaft connecting rod clearance space is provided between two adjacent rows of spinning cylinders.
[0010] The drilling fixture for crankshaft positioning pins of UAV engines provided by this utility model has the following beneficial effects: 1. This utility model can place multiple crankshafts sequentially on multiple M-shaped fixing plates, and press them onto the crankshaft connecting plates by the cylinder pressure plate of the spinning cylinder, without the need for bolt fixing of the crankshafts. The drilling machine sequentially processes crankshaft positioning pin mounting holes on multiple crankshafts.
[0011] 2. After the crankshaft positioning pin drilling is completed, the cylinder pressure plate of the spinning cylinder is disengaged from the upper end of the crankshaft connecting plate, and multiple crankshafts can be removed in sequence without disassembling the bolts, thus improving the drilling efficiency of the crankshaft positioning pin.
[0012] 3. The horizontal arrangement of the support column and limiting block in this utility model allows multiple crankshafts to be located on the same horizontal plane, and keeps the crankshaft positioning pin mounting holes consistent, reducing drilling errors.
[0013] 4. The crankshaft connecting rod clearance space of this utility model can prevent collisions between adjacent crankshaft connecting rods and reduce drilling errors.
[0014] Therefore, this utility model can fix multiple crankshafts at once, which has the positive effect of improving the drilling efficiency of crankshaft positioning pins and reducing drilling errors. Attached Figure Description
[0015] The accompanying drawings disclose specific embodiments of this utility model, wherein, Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the M-shaped fixing plate of this utility model; Figure 3 This is a front view of the structure of the M-shaped fixing plate of this utility model; Figure 4 This is a diagram showing the state of the spinning cylinder of this utility model when it is released; Figure 5 This is a diagram showing the clamping state of the spinning cylinder of this utility model; Figure 6 This is the utility model Figure 1 Schematic diagram of the structure at point A; Figure label: 1. Base; 2. Mounting base; 21. Support column; 22. Limiting block; 23. Crankshaft connecting rod clearance space; 3. M-shaped fixing plate; 31. Crankshaft connecting plate positioning groove; 32. Spinning cylinder clearance groove; 33. Positioning pin clearance groove; 4. Spinning cylinder; 41. Cylinder pressure plate; 42. Air pipe; 43. Pneumatic control switch; 5. Crankshaft; 51. Crankshaft connecting plate; 52. Crankshaft connecting rod; 53. Crankshaft locating pin mounting hole; 54. Crankshaft pin. Detailed Implementation
[0016] like Figure 1-6 As shown, the drilling fixture for crankshaft positioning pins of UAV engines provided by this utility model includes a base 1, on which a mounting seat 2 is provided; support columns 21 are provided at both ends of the mounting seat 2, and a limiting block 22 is provided in the middle of the mounting seat 2; an M-shaped fixing plate 3 is provided on the support columns 21 and the limiting block 22, and a spinning cylinder 4 is provided between the support columns 21 and the limiting block 22, and between two adjacent limiting blocks 22; the two ends of the M-shaped fixing plate 3 are provided on the support columns 21 and / or the limiting block 22, and the spinning cylinder 4 is provided in the middle of the M-shaped fixing plate 3; a cylinder pressure plate 41 is provided at the upper end of the spinning cylinder 4.
[0017] like Figure 4-6 As shown, in use, this utility model first places multiple crankshafts 5 sequentially on multiple M-shaped fixing plates 3. Then, the spinning cylinder 4 is activated, and the cylinder pressure plate 41 at the upper end of the spinning cylinder 4 rotates and presses against the crankshaft connecting plate 51 of the crankshaft 5. Next, the drilling machine is activated, and the drilling machine drills crankshaft locating pin mounting holes 53 for the multiple crankshafts 5 sequentially. Finally, after drilling the crankshaft locating pins for the multiple crankshafts 5, the spinning cylinder 4 is closed, and the cylinder pressure plate 41 at the upper end of the spinning cylinder 4 rotates, disengaging from the upper end of the crankshaft connecting plate 51. The multiple crankshafts 5 can then be removed sequentially without the need to install and remove bolts for crankshaft fixation and removal, thus improving the drilling efficiency of crankshaft locating pins.
[0018] like Figure 2-3 As shown, the M-shaped fixing plate 3 has crankshaft connecting plate positioning grooves 31 at both ends and a spinning cylinder clearance groove 32 in the middle. When the crankshaft 5 is installed on the M-shaped fixing plate 3, the crankshaft connecting plate 51 is installed in the crankshaft connecting plate positioning groove 31. The spinning cylinder 4 is installed on the mounting base 2 by screws. The cylinder body of the spinning cylinder 4 is located in the spinning cylinder clearance groove 32, which facilitates the machining of the crankshaft positioning pin mounting hole 53 by fixing the crankshaft 5 through the cylinder pressure plate 41.
[0019] like Figure 2-3 As shown, the crankshaft connecting plate positioning groove 31 is provided with a positioning pin relief groove 33 that is adapted to the crankshaft positioning pin. The crankshaft positioning pin is provided in the positioning pin relief groove 33 to avoid damage to the crankshaft positioning pin.
[0020] like Figure 1 , 4 As shown in Figure 5, the spinning cylinder 4 is connected to the pneumatic control switch 43 via the air pipe 42. When the pneumatic control switch 43 is turned on or pressed, the cylinder pressure plate 41 rotates and presses down; when the pneumatic control switch 43 is turned off, the cylinder pressure plate 41 rotates and lifts up. The pneumatic control switch 43 controls the rotation of multiple spinning cylinders, which can fix multiple crankshafts 5 at one time, improving the drilling efficiency of crankshaft positioning pins.
[0021] like Figure 1 , 4 As shown in Figure 5, the support column 21 and the limiting block 22 are at the same height and are horizontally arranged. This arrangement allows multiple crankshafts 5 to be located on the same horizontal plane and ensures that the crankshaft locating pin mounting holes 53 are consistent, reducing drilling errors. Installing crankshaft locating pins in the crankshaft locating pin mounting holes 53 prevents rotation between the crankshaft connecting plate 51 and the crankshaft pin 54.
[0022] like Figure 1 , 4 As shown in Figure 5, the mounting base 2 is equipped with 2-6 rows of spinning cylinders 4, and a crankshaft connecting rod clearance space 23 is provided between adjacent rows of spinning cylinders 4. Correspondingly, the mounting base 2 is equipped with 2-6 rows of M-shaped fixing plates 3, and a crankshaft connecting rod clearance space 23 is provided between adjacent rows of M-shaped fixing plates 3. The crankshaft connecting rod clearance space 23 prevents collisions between adjacent crankshaft connecting rods 52, reducing drilling errors.
[0023] The installation, connection, or setting methods of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc., and the specific structure, model, and coefficient indicators of all components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented.
[0024] The technical solution of this utility model is not limited to the scope of this utility model. All technical contents not described in detail in this utility model are known technologies.
Claims
1. A drilling fixture for crankshaft positioning pins of a UAV engine, including a base (1), characterized in that, The base (1) is provided with a mounting seat (2); the mounting seat (2) is provided with support columns (21) at both ends, and a limit block (22) is provided in the middle of the mounting seat (2); an M-shaped fixing plate (3) is provided on the support column (21) and the limit block (22), and a spinning cylinder (4) is provided between the support column (21) and the limit block (22) and between two adjacent limit blocks (22); the two ends of the M-shaped fixing plate (3) are provided on the support column (21) and / or the limit block (22), and a spinning cylinder (4) is provided in the middle of the M-shaped fixing plate (3); a cylinder pressure plate (41) is provided at the upper end of the spinning cylinder (4).
2. The drilling fixture for crankshaft positioning pins of UAV engines according to claim 1, characterized in that, The M-shaped fixing plate (3) has crankshaft connecting plate positioning grooves (31) at both ends and a spinning cylinder clearance groove (32) in the middle.
3. The drilling fixture for crankshaft positioning pins of UAV engines according to claim 2, characterized in that, The crankshaft connecting plate positioning groove (31) is provided with a positioning pin clearance groove (33) that is adapted to the crankshaft positioning pin.
4. The drilling fixture for crankshaft positioning pins of UAV engines according to claim 1, characterized in that, The spinning cylinder (4) is connected to the pneumatic control switch (43) via an air pipe (42).
5. The drilling fixture for crankshaft positioning pins of UAV engines according to claim 1, characterized in that, The support column (21) and the limiting block (22) are at the same height and are set horizontally.
6. The drilling fixture for crankshaft positioning pins of UAV engines according to claim 1, characterized in that, The mounting base (2) is provided with 2-6 rows of spinning cylinders (4), and a crankshaft connecting rod clearance space (23) is provided between two adjacent rows of spinning cylinders (4).