Rapid boring device and method for bearing cap of vertical stabilizer of airplane
By designing a rapid boring device consisting of a base, positioning pins, nylon pads, a clamping cover plate and a pressure sensor, the problems of repeated disassembly and assembly and zero point alignment in the machining of the base hole of the aircraft vertical stabilizer bearing cover were solved, achieving efficient and high-precision machining and reducing labor intensity and management costs.
Patent Information
- Application Number
- CN202511124149.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-12
- Publication Date
- 2025-10-10
AI Technical Summary
In the existing technology, the base hole processing of the aircraft vertical stabilizer bearing cover requires repeated disassembly, clamping and zero-point alignment, resulting in high labor intensity and low production efficiency for workers. At the same time, different products require multiple special devices, which increases management costs.
A rapid boring device consisting of a base, locating pins, nylon pads, a clamping cover, a pressure sensor and an internal support fixture was designed. The base is connected to the three-jaw chuck of a lathe to achieve universal positioning of the locating pins and precise clamping of the pressure sensor in one clamping. The adjustability of the internal support fixture ensures that the same device can adapt to the efficient processing of different types of bearing covers.
It achieves efficient and high-precision boring of aircraft vertical stabilizer bearing covers, reduces workers' labor intensity, improves production efficiency, and the same device is applicable to various types of bearing covers, improving versatility and universality.
Smart Images
Figure CN120755379A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of mechanical manufacturing, in particular to a kind of quick boring device and method of aircraft vertical stabilizer bearing cover. BACKGROUND
[0002] The aircraft vertical stabilizer mainly has two effects, one is to realize the directional stability of aircraft, and the second is to ensure the operability of aircraft. It is usually used with rudder, and the flexibility requirement is very high. In the aviation field, a variety of non-standard aircraft vertical stabilizer bearing covers with high precision requirements are usually used to realize this flexibility requirement. The bearing base hole precision needs to reach 6 levels, so the bearing mounting structure of this kind of product plays an important role in the stable operation of the aircraft, and a fast and efficient process design scheme needs to be planned to ensure the stability of product manufacturing.
[0003] The traditional processing method of this kind of product bearing base hole is vertical boring by three-coordinate numerical control milling machine or boring machine. Since the single batch quantity of this kind of product is large, repeated disassembly, clamping and zero point alignment are needed, which greatly increases the labor intensity of workers and reduces the production efficiency. At the same time, this kind of product has strong similarity, but the same special device can only process one kind of product, which has poor universality and greatly increases the manufacturing cost. SUMMARY
[0004] The purpose of the present application is to solve the problems and deficiencies in the prior art, such as using the method of vertical boring to process the base hole of the aircraft vertical stabilizer bearing cover, which increases the labor intensity of workers and reduces the labor efficiency due to repeated disassembly, clamping and zero point alignment. At the same time, multiple special devices are needed to realize the boring of the base hole of the same type of product, which greatly increases the management cost.
[0005] In order to achieve the above purpose, the present application provides the following technical scheme: A kind of quick boring device of aircraft vertical stabilizer bearing cover, including 1 base, 1 positioning pin, 1 nylon pad, 1 compression cover plate, 1 pressure sensor, 1 inner support clamp.
[0006] The cover plate is located at the rightmost end of the boring device, mainly composed of clamping boss, pin hole, pressure sensor load cell fixing groove; the base is located at the leftmost end of the device, and is screwed with the cover plate to clamp the vertical stabilizer bearing cover; the positioning pin is located in the pin hole of the base; the nylon pad is located between the cover plate and the base; the pressure sensor is fixed in the pressure sensor load cell fixing groove on the right side of the base end face; the inner support clamp is located in the positioning groove of the base, mainly composed of inner support clamp base, connecting screw and expansion inner support head.
[0007] The base is a rotating body, the left end of which can be connected to the three-jaw chuck of the lathe, and the outer surface of the right end has a right-hand thread. The intermediate cavity structure formed by it and the internal support clamp is consistent with the external structure of the aircraft vertical stabilizer bearing cover and can be completely matched, thereby ensuring that the axis of the device is consistent with the axis of the product, thereby solving the problem of repeated alignment in traditional processing methods.
[0008] The bottom of the locating pin has a right-hand thread, which is screwed into the pin hole of the base through the thread. The upper end has a boss, which is consistent with the size of the vertical stabilizer bearing cover slot, thereby realizing the positioning of the vertical stabilizer bearing cover. At the same time, the locating pin boss matching the device is inconsistent in size, which can adapt to the different slots of different types of vertical stabilizer bearing covers, thereby realizing the universal processing of the same type of bearing cover by the device.
[0009] The nylon pad is placed between the cover plate and the vertical stabilizer bearing cover to pre-tighten the vertical stabilizer bearing cover during the tightening of the cover plate and the base, while preventing the cover plate from scratching the product surface during the tightening process.
[0010] The cover plate is a protective device designed to prevent the product from loosening during processing. Its inner surface has a right-hand thread, and the thread length is longer than the cover plate thread length, which is convenient for the installation of nylon pads. At the same time, the outer circular contour has knurling, which can increase the friction during loading and unloading, so as to facilitate quick disassembly and assembly.
[0011] The pressure sensor is a pressure sensor produced by Siemens, with a force measuring range of 0-100 N and an accuracy of 0.1. During the screwing process of the cover and the base, when the pressure sensor is in a more appropriate range, the screwing is stopped to ensure that the product is pressed tightly while ensuring that the surface of the product is not scratched.
[0012] The internal support fixture is located inside the positioning groove of the base, and is mainly composed of an internal support fixture base, connecting screws, an expansion internal support head, etc.; it is tightly connected to the base through the connecting screws, and at the same time, the expansion internal support head can realize the opening and closing of the fixture base head, thereby achieving the purpose of scaling the size of the internal support fixture base head. The scaling size range is 43-46 mm, and the accuracy is 0.01. For aircraft vertical stabilizer bearing covers with different apertures, it can achieve matching and centering, ensuring that the vertical stabilizer bearing covers of such aircraft can all achieve the purpose of boring through the above device.
[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention fixes the vertical stabilizer bearing cover on the device and then combines it with a lathe, thereby overcoming the problems of high labor intensity and low production efficiency for workers in repeated disassembly and assembly and zero-point alignment when using a special device to assist in processing the base hole of the vertical stabilizer bearing cover of an aircraft; it achieves the purpose of efficient and high-precision boring with one-time clamping and zero-point alignment of the product and rapid product replacement, thereby improving processing efficiency and reducing the labor intensity of workers; it achieves the purpose of assisting in boring the inner holes of the vertical stabilizer bearing covers of the same family with the same device, and has extremely strong versatility and universality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The invention application is further described in detail below with reference to the accompanying drawings of the embodiments.
[0015] Figure 1 This is an isometric view of the overall assembly of a rapid boring device for an aircraft vertical stabilizer bearing cap provided by the present invention; Figure 2 An exploded schematic diagram of the overall structure of a rapid boring device for an aircraft vertical stabilizer bearing cap provided by the present invention; Figure 3 A schematic diagram of the base structure of a rapid boring device for an aircraft vertical stabilizer bearing cap provided by the present invention; Figure 4 A schematic diagram of the structure of an internal support fixture for a rapid boring device for an aircraft vertical stabilizer bearing cap provided by the present invention; In the figure: 1. Base, 2. Positioning pin, 3. Vertical stabilizer bearing cover, 4. Nylon pad, 5. Cover plate, 6. Clamping boss, 7. Pin hole, 8. Pressure sensor force measuring head fixing slot, 9. Pressure sensor, 10. Internal support fixture, 11. Internal support fixture base, 12. Connecting screws, 13. Expansion internal support head. DETAILED DESCRIPTION
[0016] The following will be combined with the accompanying drawings in the embodiments of the present invention to provide a clear and complete description of the technology in the embodiments of the present invention. Obviously, the above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited to this. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or changes based on the technical solutions and inventive concepts of the present invention shall be covered by the scope of protection of the present invention.
[0017] See also Figure 1-4A quick boring device for an aircraft vertical stabilizer bearing cover, the mechanical structure of which consists of a base 1, a positioning pin 2, a vertical stabilizer bearing cover 3, a nylon pad 4, a cover plate 5, a pressure sensor 9, and an internal support fixture 10. The base 1 consists of a clamping boss 6, a pin hole 7, and a pressure sensor force sensor fixing slot 8. The clamping boss 6 at the left end of the base 1 is used to clamp and connect with the three-jaw chuck of the lathe, and the right end has a right-handed external thread that can engage with the right-handed internal thread of the cover plate 5, thereby clamping the vertical stabilizer bearing cover 3 in the closed space formed by the base 1 and the cover plate 5. At the same time, a pin hole 7 is processed on the base 1, and the pin hole 7 The inner surface of the inner surface is processed with an internal thread, which can engage with the external thread on the outer surface of the lower end of the positioning pin 2 to fix the positioning pin 2 on the base 1, and the outer circular contour of the cover plate 5 is knurled, which can increase friction and facilitate quick disassembly and assembly; at the same time, the upper end of the positioning pin 2 has a boss, which is the same size as the notch of the vertical stabilizer bearing cover 3, which can limit the freedom of the vertical stabilizer bearing cover 3 and prevent it from rotating, thereby realizing the positioning of the vertical stabilizer bearing cover 3; the central cavity structure formed by the base 1 and the internal support fixture 10 is consistent with the external structure of the aircraft vertical stabilizer bearing cover 3, and can completely match it, ensuring the vertical stabilizer bearing of the aircraft The axis of the base hole 3 is concentric with the axis of the device, thereby ensuring the tolerance of the processing hole position, overcoming the problem of repeatedly aligning the product hole center when the traditional assembly vehicle is clamped and processed for the aircraft vertical stabilizer bearing cover 3; and the nylon pad 4 is placed in the center of the base 1 and the cover plate 5, and its maximum diameter is consistent with the maximum inner diameter of the cover plate 5. It is placed in the middle of the vertical stabilizer bearing cover 3 and the cover plate 5. During the tightening process of the base 1 and the cover plate 5, the vertical stabilizer bearing cover 3 is pre-tightened, and the surface of the vertical stabilizer bearing cover 3 is prevented from being scratched, thereby ensuring that the surface roughness of the product can meet the design requirements; at the same time, the pressure head of the pressure sensor 9 is fixed The pressure sensor force measuring head fixing groove (8) of the base (1) is fixed. When the cover plate 5 and the base 1 are screwed together, when the pressure sensor 9 is in a relatively suitable range, the screwing is stopped to ensure that the product is pressed and the surface of the product is not scratched. The inner support fixture 10 is located inside the positioning groove of the base 1 and is composed of an inner support fixture base 11, a connecting screw 12, an expansion inner support head 13, etc. It is tightly connected to the base 1 through the connecting screw 12, and at the same time, the expansion inner support head 13 can realize the opening and closing of the head of the fixture base 11, so as to achieve the scaling of the head of the inner support fixture base 11. The scaling range is 43-46 mm, and the accuracy is 0.01. Therefore, for different apertures of the same type of products, centering can be achieved, ensuring that the vertical stabilizer bearing caps of such aircraft can achieve the purpose of boring through the above device, which greatly improves the universality and versatility of the vertical stabilizer bearing caps.
[0018] Working principle: Before use, select the pin 2 that is suitable for processing the vertical stabilizer bearing cover 3, and expand the internal support head 13 to open and close the head of the internal support fixture base 11 to the appropriate size of the inner hole of the vertical stabilizer bearing cover 3. When in use, place the vertical stabilizer bearing cover 3 in the inner cavity of the base 1, rotate the vertical stabilizer bearing cover 3 to align the notch with the pin hole 7, and then rotate the positioning pin 2 into the pin hole 7 of the base 1, and then place the nylon pad 4 in the cover plate 5 and screw it onto the base 1. After ensuring that the vertical stabilizer bearing cover 3 is stably placed in the inner cavity of the base 1 and the cover plate 5, screw the cover plate 5 and the base 1 together. When the pressure sensor 9 is in a more appropriate range, stop screwing; finally, clamp the whole thing on the three-jaw chuck of the lathe to bore the base hole of the vertical stabilizer bearing cover 3. When the boring is completed, disassemble the base 1 and the cover plate 5 to remove the product, completing the entire boring process of the vertical stabilizer bearing cover 3. At the same time, when processing the next product, it is only necessary to remove the cover plate 5 and replace it with a new product, thereby achieving the purpose of efficient and high-precision boring with one-time clamping of the fixture and rapid product replacement.
[0019] It should be noted that when an element is described as being "connected to" another element, it means being directly connected to the other element. The terms "left" and "right" used in this specification to indicate directions or positional relationships are based on those shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices and elements referred to must have, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the present invention.
Claims
1. A rapid boring device for an aircraft vertical stabilizer bearing cap, characterized by: It includes a base (1), a positioning pin (2), a vertical stabilizer bearing cover (3), a nylon pad (4), a cover plate (5), and an internal support fixture (10); The base (1) is located at the leftmost end of the auxiliary boring device and consists of a clamping boss (6), a pin hole (7), a pressure sensor force head fixing groove (8), and a pressure sensor (9); the cover plate (5) is located at the rightmost end of the device and is screwed together with the base (1) through a thread to clamp the vertical stabilizer bearing cover (3); the positioning pin (2) is screwed together with the pin hole (7) and fixed to the base (1) through a thread; the nylon pad (4) is located between the cover plate (5) and the base (1); the pressure sensor (9) is fixed in the pressure sensor force head fixing groove on the right end face of the base (1); the internal support fixture (10) is located inside the positioning groove of the base (1) and consists of an internal support fixture base (11), a connecting screw (12), and an expansion internal support head (13).
2. The rapid boring device for an aircraft vertical stabilizer bearing cap according to claim 1, characterized in that: The entire device is a rotating body made of aviation aluminum, and its base (1) can be fixed by a lathe three-jaw chuck.
3. The rapid boring device for an aircraft vertical stabilizer bearing cap according to claim 1, characterized in that: The lower end of the positioning pin (2) is provided with a right-handed external thread, which can be screwed together with the right-handed internal thread of the pin hole (7) to tighten. At the same time, the positioning pin (2) is fully engaged with the groove of the vertical stabilizer bearing cover (3), thereby achieving the function of limiting the vertical stabilizer bearing cover (3).
4. The rapid boring device for an aircraft vertical stabilizer bearing cap according to claim 1, characterized in that: The positioning pins (2) are processed into various types. The upper end bosses of different positioning pins (2) have different sizes, which correspond to the sizes of the grooves of different vertical stabilizer bearing covers (3). Only by changing the type of positioning pins (2), the universality of limiting the different vertical stabilizer bearing covers (3) can be achieved.
5. The rapid boring device for an aircraft vertical stabilizer bearing cap according to claim 1, characterized in that: The nylon pad (4) is made of PP polypropylene as a whole and is located between the cover plate (5) and the base (1). The pre-tightening and surface protection of the vertical stabilizer bearing cover (3) are achieved by screwing the cover plate (5) and the base (1).
6. The rapid boring device for an aircraft vertical stabilizer bearing cap according to claim 1, characterized in that: The pressure head of the pressure sensor (9) is fixed to the base (1). Inside the pressure sensor force measuring head fixing groove (8), during the screwing process of the cover plate (5) and the base (1), when the pressure sensor (9) is within the set range, the screwing is stopped to ensure that the surface of the product is not squeezed and scratched when the product is pressed.
7. The rapid boring device for an aircraft vertical stabilizer bearing cap according to claim 1, characterized in that: The inner support fixture (10) is located inside the positioning groove of the base (1), and is composed of an inner support fixture base (11), a connecting screw (12), and an expansion inner support head (13); it is tightly connected to the base (1) through the connecting screw (12), and at the same time, the expansion inner support head (13) can realize the opening and closing of the head of the fixture base (11), thereby achieving the purpose of scaling the size of the head of the inner support fixture base (11), and can achieve centering for aircraft vertical stabilizer bearing caps with different apertures, ensuring that the vertical stabilizer bearing caps of different aircraft can all achieve the purpose of boring holes through the above device.
8. A method for quickly boring a vertical stabilizer bearing cap of an aircraft, characterized by: The method is implemented using the apparatus according to any one of claims 1 to 7, and the method includes: Before use, select a pin (2) that is suitable for processing the vertical stabilizer bearing cover (3), and expand the inner support head (13) to open and close the head of the inner support fixture base (11) to the size of the inner hole of the vertical stabilizer bearing cover (3); When in use, the vertical stabilizer bearing cover (3) is placed in the inner cavity of the base (1), the vertical stabilizer bearing cover (3) is rotated to align the notch with the pin hole (7), and the positioning pin (2) is rotated into the pin hole (7) of the base (1), and then the nylon pad (4) is placed in the cover plate (5) and screwed onto the base (1), ensuring that the vertical stabilizer bearing cover (3) is stably placed in the inner cavity of the base (1) and the cover plate (5), and then the cover plate (5) and the base (1) are screwed together. When the pressure sensor (9) is in a relatively suitable range, the screwing is stopped; Finally, the entire device is clamped on the three-jaw chuck of the lathe to bore the base hole of the vertical stabilizer bearing cover (3); When the boring is completed, the base (1) and the cover (5) are disassembled to remove the product, completing the entire boring process of the vertical stabilizer bearing cover (3).