Attack angle horizontal lower drilling device
By designing a high-precision hole making device at angle of attack level including positioner, pressure plate, screw, handle and nut, the problem of large errors when installing angle of attack sensors on the surface of the aircraft skin is solved, high-precision hole making and precision measurement are achieved, and installation accuracy is improved.
Patent Information
- Application Number
- CN202421771252.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The prior art when installing an angle of attack sensor on the surface of an aircraft skin, the error is large and the hole making accuracy cannot be accurately measured, resulting in low installation accuracy.
A high-precision hole making device at the angle of attack level is designed, including a positioner, a pressure plate, a screw, a handle and a nut. It is in contact with the skin matching surface through the positioner. The screw and a nut are fixed. The handle rotates and applies force to achieve high-precision hole making, and the hole making accuracy is measured through a quadrant.
The hole making accuracy of the angle of attack sensor installation hole is improved, the influence of human factors is reduced, and the manufacturing error can be directly measured, overcoming the problems of large errors and inability to measure accuracy in the prior art.
Smart Images
Figure CN222830764U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of aviation assembly and relates to a hole-making device at a horizontal attack angle. Background Art
[0002] The angle of attack sensor is installed on the surface of the aircraft skin to provide the aircraft with information such as flight attitude. The angle of attack sensor has extremely high requirements for installation accuracy. The existing technical method is generally to mark and make holes, and then adjust the electronic zero position through the atmospheric machine zero position regulator to compensate for the mechanical zero position. However, due to the irregular arc surface of the skin, the error of marking and making holes is large, which exceeds the electronic zero position compensation range. In addition, the angle of attack sensor is irregular in shape and its horizontal angle cannot be directly measured. After making the hole, the error range cannot be accurately measured. Therefore, it is very necessary to design a high-precision hole-making device at the angle of attack level. Utility Model Content
[0003] Purpose of the utility model
[0004] The utility model provides a high-precision hole-making device at the attack angle level, improves the hole-making accuracy of the attack angle sensor installation hole, and can directly measure the hole-making accuracy. The utility model overcomes the shortcomings of the prior art such as large error and inability to measure hole-making accuracy.
[0005] Technical Solution
[0006] A device for making holes at a horizontal attack angle comprises a positioner 1, a first pressing plate 2, a second pressing plate 3, a screw rod 4, a handle 5 and a nut 6.
[0007] The positioner 1 is an L-shaped structure, which is welded into one by a horizontal plate and a longitudinal plate. The end of the longitudinal plate that contacts the skin has a profile that matches the profile of the skin, and the other end is a vertical plane. The screw 4 passes through the first pressure plate 2, the longitudinal plate, the skin, and the second pressure plate 3 in sequence, and is tightened with a nut 6 to fix the positioner 1.
[0008] Furthermore, it also includes a handle 5, which is welded to the operating end of the screw rod 4 to facilitate rotation and force application.
[0009] Furthermore, the profile of the second pressure plate 3 at the side in contact with the skin matches the inner profile of the skin.
[0010] Furthermore, a boss is provided on the side of the longitudinal plate of the positioner 1 that contacts the skin, and the boss is used to insert into the through hole of the finished skin product and position the positioner 1.
[0011] Furthermore, the longitudinal plate is provided with drilled holes, and the positions of the drilled holes are determined according to the mounting holes of the finished product.
[0012] Furthermore, the first pressing plate 2 is provided with a plurality of cutouts, and the cutouts are used to avoid the positions of the drilling holes.
[0013] Furthermore, the positioner 1 is made of 45# steel, and its structural strength can be guaranteed.
[0014] Furthermore, reinforcing ribs are provided between the transverse plate and the longitudinal plate of the positioner 1 to enhance the structural strength.
[0015] The beneficial effects of this application are:
[0016] Compared with marking holes, this method has higher hole making accuracy, effectively reduces the influence of human factors, and can measure manufacturing errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram and a side view of the device;
[0018] Figure 2 It is a schematic diagram and a side view of the positioner 1;
[0019] Among them: 1. positioner, 2. pressure plate, 3. pressure plate, 4. screw, 5. handle, 6. nut. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the embodiments. The following are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Example 1: When making holes at an angle of attack, first level the aircraft frame, then place positioner 1 close to the skin shape, insert the circular boss into the skin opening, adjust the quadrant to zero and place it on the positioner 1b surface, adjust the angle of positioner 1 so that the quadrant is bubbled to the center position, and then lock the positioner with the screw handle and nut to make the hole.
[0022] Example 2: Measuring hole making accuracy. After the hole is made, use screws to fix the locator on the aircraft skin, place the quadrant on the locator 1b surface, and read the current angle through the quadrant. This angle is the hole making accuracy.
[0023] The utility model overcomes the shortcomings of the prior art such as large error and inability to measure hole making accuracy, and provides a hole making device at a horizontal attack angle. The device comprises a positioner 1, a pressing plate 2, a pressing plate 3, a screw 4, a handle 5, and a nut 6.
[0024] The surface of the locator 1a is the same as the arc surface of the skin where the angle of attack sensor is installed. The surface of the locator 1b is used to place the quadrant, and the surface of the locator 1b is perpendicular to the surface c. A circular boss is set on the surface of the locator 1c, and the diameter of the circular boss is the same as the diameter of the finished product through hole on the skin. A hole is made in the center of the circular boss for passing the screw 4, and 4 M5 finished product mounting holes are drilled around the circular boss. The position of the drilled hole relative to the circular boss is the same as the position of the angle of attack sensor relative to the finished product mounting hole.
[0025] The pressure plate 2 is installed on the outer surface of the skin, the pressure plate 3 is installed on the inner surface of the skin, the screw 4 connects the pressure plate 2, the pressure plate 3, and the positioner 1, and the nut 6 and the handle 5 are used to fix and clamp the pressure plate 2 and the pressure plate 3 to fix the positioner 1 on the skin.
[0026] When the device is used, place the locator 1 close to the outer shape of the skin, insert the circular boss into the opening of the skin (the hole through which the angle of attack sensor is finished), adjust the quadrant to zero, and place it on the locator 1b surface. Adjust the angle of the locator 1 so that the quadrant is bubbled to the center position, and clamp the locator 1 with the nut 6 and the handle 5 to make a hole. After the hole is made, the pressure plate 2 and the pressure plate 3 can be removed and the locator 1 can be fixed to the skin surface with screws. By observing the scale of the quadrant, the hole making accuracy can be obtained and the manufacturing error can be calculated.
[0027] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as here. The specific implementation methods described above further explain the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.
Claims
1. A hole-making device at a horizontal attack angle, characterized in that: It includes a positioner, a first pressing plate, a second pressing plate, a screw rod, a handle and a nut; The positioner is an L-shaped structure, which is welded into one by a horizontal plate and a longitudinal plate. The end of the longitudinal plate that contacts the skin has a profile that matches the profile of the skin, and the other end is a vertical plane. The screw passes through the first pressure plate, the longitudinal plate, the skin, and the second pressure plate in sequence, and is tightened with a nut to fix the positioner.
2. The device according to claim 1, characterized in that It also includes a handle, which is welded to the operating end of the screw rod to facilitate rotation and force application.
3. The device according to claim 2, characterized in that The second pressing plate is in contact with the side of the skin, and its profile matches the inner profile of the skin.
4. The device according to claim 3, characterized in that A boss is provided on the side of the longitudinal plate of the positioner that contacts the skin, and the boss is used to insert into the through hole of the finished skin product and position the positioner.
5. The device according to claim 4, characterized in that The longitudinal plate is provided with drilling holes, and the positions of the drilling holes are determined according to the mounting holes of the finished product.
6. The device according to claim 5, characterized in that The first pressing plate is provided with a plurality of cutouts, and the cutouts are used to avoid the positions of the drilling holes.
7. The device according to claim 6, characterized in that The positioner is made of 45 steel.
8. The device according to claim 7, characterized in that Reinforcing ribs are provided between the transverse plate and the longitudinal plate of the positioner.