Self-positioning mounting tool suitable for intersection point joint bearing and using method of self-positioning mounting tool

Abstract

The invention discloses a self-positioning mounting tool suitable for an intersection joint bearing and a using method of the self-positioning mounting tool, and belongs to the technical field of aircraft assembling and manufacturing. A stop nut, a locking sleeve, a fixing sleeve, a guide sleeve, a ball transmission part and a transmission nut are sequentially sleeved on the guide rod, the ball transmission part converts rotary motion of the transmission nut into axial linear motion, the guide sleeve carries a bearing, the fixing sleeve is in transition fit with an intersection joint hole, and the fixing sleeve and the guide sleeve are matched to be coaxial. The locking nut enables the locking sleeve to abut against the intersection joint part, and the transmission nut is rotated to push the guide sleeve to drive the bearing to move towards the center of an intersection joint hole till installation is completed. The self-positioning bearing has a self-positioning function, and the situation that the bearing mounting axis coincides with the axis of the intersection joint is guaranteed through coordination between the structures. And meanwhile, the problems of bearing surface collision and time-consuming and labor-consuming installation caused by manual installation are solved, the difficulty of bearing installation is reduced, and the working efficiency of an operator is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft assembly manufacturing, and relates to a self-positioning installation tool suitable for an intersection joint bearing and a use method thereof. Background Art

[0002] At present, most bearings are installed by equipment, but this installation method is not applicable to all aircraft structures. Because the intersection joints of some aircraft structures need to be finely processed to coordinate the relationship between components, when the bearing is installed, the intersection joints are already in the assembly state, and there is not enough space and conditions to use equipment for installation. It can only be installed manually or with tools.

[0003] Installing bearings in intersection joints is a complex and technically demanding task, and its difficulties are reflected in two aspects: First, the structure of intersection joints is usually complex, the space is small and the shape is irregular, which brings great challenges to the positioning and installation of bearings. Due to the limited space, it is often difficult to directly observe and operate. Secondly, the installation of bearings requires extremely high precision. Any slight deviation may cause the bearing to malfunction or even damage it. In intersection joints, the installation position of the bearing usually needs to be precisely aligned with other components, and ensure that the axis of the bearing is completely coincident with the axis of the joint. It is extremely difficult to succeed by manual installation. Summary of the invention

[0004] In response to the above problems, the present invention proposes a self-positioning installation tool suitable for intersection joint bearings and a method of using the tool. The self-positioning of the tool solves the problem of small space and limited positioning conditions when installing bearings, and through coordination between structures, it can ensure that the axis of the bearing and the axis of the joint are completely coincident, thereby achieving high-quality installation of the intersection joint bearing.

[0005] The present invention adopts the following technical solution:

[0006] A self-positioning installation tool suitable for intersection joint bearings comprises a guide rod 1, a fixing sleeve 2, a guide sleeve 3, a ball transmission part 4, a transmission nut 5, a handle 6, a locking sleeve 7 and a stop nut 8.

[0007] The middle part of the guide rod 1 is a smooth rod, and both ends are threaded. The guide rod 1 is sequentially covered with a stop nut 8, a locking sleeve 7, a fixing sleeve 2, a guide sleeve 3, a ball transmission part 4 and a transmission nut 5, wherein the smooth rod part penetrates the locking sleeve 7, the fixing sleeve 2 and the guide sleeve 3, and the three can slide on the smooth rod, and the threaded part is the stop nut 8, the transmission nut 5 and the ball transmission part 4 to provide a stroke for the spiral motion.

[0008] The transmission nut 5 is rotationally matched with the thread at the rear end of the guide rod 1, and the ball transmission part 4 is located at the front end of the transmission nut 5 and is threadedly matched with the guide rod 1. The transmission between the transmission nut 5 and the guide rod 1 is transmitted through balls. The transmission method between the two is similar to a ball screw. The transmission nut 5 rotates forward to apply thrust to the ball transmission part 4, and the ball transmission part 4 converts the spiral rotation motion of the transmission nut 5 into axial linear motion.

[0009] The inner hole of the guide sleeve 3 is slidably matched with the guide rod 1, and its outer diameter is matched with the inner hole of the bearing, which is used to carry the bearing. A boss is arranged on the outer periphery of the rear end of the guide sleeve 3 for limiting the bearing, and an arc guide column extending forward is formed on the front end surface for guiding the movement of the fixed sleeve 2. Under the push of the ball transmission part 4, the guide sleeve 3 moves toward the center of the intersection joint hole with the bearing.

[0010] The inner diameter of the fixed sleeve 2 is set according to the outer diameter of the front end of the guide column on the guide sleeve 3, and its outer diameter is set according to the inner diameter of the intersection joint hole. The two are transitionally matched, and the fixed sleeve 2 and the guide sleeve 3 are matched to make the two coaxial, thereby realizing the coaxiality of the bearing and the intersection joint hole.

[0011] The locking sleeve 7 is a cylindrical shell, and a hole is made in the center of its front end face, which is slidably matched with the guide rod 1, and its rear end face is set to be open. The length of the locking sleeve 7 is greater than the length of the fixing sleeve 2, and the inner diameter is greater than the outer diameter of the fixing sleeve 2, so that the fixing sleeve 2 can enter its interior. The rear end face of the locking sleeve 7 is against the intersection joint part, and the stop nut 8 cooperates with the thread of the front end of the guide rod 1 to press the locking sleeve 7 on the intersection joint, which supports the entire self-positioning installation tool and prevents the axis of the self-positioning installation tool from not coinciding with the axis of the intersection joint hole.

[0012] The handle 6 is sleeved on the driving nut 5, and two cylinders are arranged on the rear end surface thereof for twisting the driving nut 5 with less effort.

[0013] A method for using the self-positioning installation tool for intersection joint bearings comprises the following steps:

[0014] Step 1: Install the bearing on the guide sleeve 3;

[0015] Step 2: Install the fixing sleeve 2, the guide sleeve 3, the ball transmission part 4, and the transmission nut 5 on the guide rod 1 in sequence;

[0016] Step 3: Insert the fixing sleeve 2 into the intersection joint hole;

[0017] Step 4: Install the locking sleeve 7 on the guide rod 1 from the front end, and install the stop nut 8 to press the locking sleeve 7 onto the surface of the intersection joint part;

[0018] Step 5: Put the handle 6 on the transmission nut 5, rotate the handle 6 to drive the transmission nut 5 to rotate, and the ball transmission part 4 converts the spiral motion of the transmission nut 5 into horizontal linear motion, pushing the guide sleeve 3 to move with the bearing to the intersection joint hole. At the same time, the guide sleeve 3 pushes the fixed sleeve 2 to be gradually squeezed out of the intersection joint hole, and the bearing gradually enters the intersection joint hole until the bearing is completely installed. At this time, the fixed sleeve 2 enters the locking sleeve 7.

[0019] Beneficial effects of the invention: The invention does not rely on the characteristics of the surrounding structure for positioning, but has a self-positioning function, and ensures that the bearing installation axis coincides with the intersection joint axis through coordination between structures. At the same time, the tool and method can solve the problems of bearing surface collision and time-consuming and laborious installation caused by manual installation during the bearing installation process, reduce the difficulty of bearing installation, and effectively improve the operator's work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : The present invention is applicable to the schematic diagram of the structure of the self-positioning installation tool of the intersection joint bearing;

[0021] Figure 2 : Schematic diagram of guide rod structure;

[0022] Figure 3 : Schematic diagram of the fixed sleeve structure, where (a) is the main view and (b) is the side view;

[0023] Figure 4 : Schematic diagram of the guide sleeve structure;

[0024] Figure 5 : Schematic diagram of the ball transmission structure;

[0025] Figure 6 : Schematic diagram of handle structure;

[0026] Figure 7 : Schematic diagram of the compression sleeve structure;

[0027] Figure 8 : Schematic diagram of the operation process.

[0028] Among them, 1 is a guide rod; 2 is a fixed sleeve; 3 is a guide sleeve; 4 is a ball transmission part; 5 is a transmission nut; 6 is a handle; 7 is a locking sleeve; 8 is a stop nut. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the specific implementation methods of the present invention will be described in detail below with reference to the technical solution.

[0030] A self-aligning mounting tool for intersection joint bearings, such as Figure 1, including a guide rod 1, a fixed sleeve 2, a guide sleeve 3, a ball transmission part 4, a transmission nut 5, a handle 6, a locking sleeve 7, and a stop nut 8.

[0031] like Figure 2 The middle part of the guide rod 1 is a smooth rod, and both ends are threaded. The guide rod 1 is sequentially covered with a stop nut 8, a locking sleeve 7, a fixing sleeve 2, a guide sleeve 3, a ball transmission part 4 and a transmission nut 5, wherein the smooth rod part penetrates the locking sleeve 7, the fixing sleeve 2 and the guide sleeve 3, and the three can slide on the smooth rod, and the threaded parts provide the travel of the spiral motion for the stop nut 8, the transmission nut 5 and the ball transmission part 4 respectively.

[0032] The transmission nut 5 is rotatably matched with the thread at the rear end of the guide rod 1, and the ball transmission part 4 is located at the front end of the transmission nut 5 and is threadably matched with the guide rod 1. The ball transmission is performed between the transmission nut 5 and the guide rod 1, and the transmission mode between the two is similar to that of a ball screw. Figure 5 The transmission nut 5 rotates forward and applies thrust to the ball transmission part 4, and the ball transmission part 4 converts the spiral rotation motion of the transmission nut 5 into axial linear motion.

[0033] like Figure 4 The inner hole of the guide sleeve 3 is slidably matched with the guide rod 1, and its outer diameter is matched with the inner hole of the bearing for carrying the bearing. A boss is arranged on the outer periphery of the rear end of the guide sleeve 3 for limiting the bearing, and an arc guide column extending forward is arranged on the front end surface for guiding the movement of the fixed sleeve 2. Under the push of the ball transmission part 4, the guide sleeve 3 moves toward the center of the intersection joint hole with the bearing.

[0034] like Figure 3 The inner diameter of the fixed sleeve 2 is set according to the outer diameter of the front end of the guide column on the guide sleeve 3, and its outer diameter is set according to the inner diameter of the intersection joint hole. The two are transitionally matched, and the fixed sleeve 2 and the guide sleeve 3 are matched to make the two coaxial, thereby realizing the coaxiality of the bearing and the intersection joint hole.

[0035] like Figure 7 The locking sleeve 7 is a cylindrical shell with a hole in the center of its front end face, which is slidably matched with the guide rod 1, and its rear end face is set to be open. The length of the locking sleeve 7 is greater than the length of the fixed sleeve 2, and the inner diameter is greater than the outer diameter of the fixed sleeve 2, so that the fixed sleeve 2 can enter its interior. The rear end face of the locking sleeve 7 is against the intersection joint part, and the stop nut 8 cooperates with the thread of the front end of the guide rod 1 to press the locking sleeve 7 on the intersection joint, which supports the entire self-positioning installation tool and prevents the axis of the self-positioning installation tool from not coinciding with the axis of the intersection joint hole.

[0036] The handle 6 is sleeved on the transmission nut 5, and two cylinders are arranged on the rear end surface thereof for twisting the transmission nut 5 with less effort. Figure 6 .

[0037] A method for using the self-positioning installation tool for intersection joint bearings, such as Figure 8 , including the following steps:

[0038] Step 1: Install the bearing on the guide sleeve 3;

[0039] Step 2: Install the fixing sleeve 2, the guide sleeve 3, the ball transmission part 4, and the transmission nut 5 on the guide rod 1 in sequence;

[0040] Step 3: Insert the fixing sleeve 2 into the intersection joint hole;

[0041] Step 4: Install the locking sleeve 7 on the guide rod 1 from the front end, and install the stop nut 8 to press the locking sleeve 7 onto the surface of the intersection joint part;

[0042] Step 5: Put the handle 6 on the transmission nut 5, rotate the handle 6 to drive the transmission nut 5 to rotate, and the ball transmission part 4 converts the spiral motion of the transmission nut 5 into horizontal linear motion, pushing the guide sleeve 3 to move with the bearing to the intersection joint hole. At the same time, the guide sleeve 3 pushes the fixed sleeve 2 to be gradually squeezed out of the intersection joint hole, and the bearing gradually enters the intersection joint hole until the bearing is completely installed. At this time, the fixed sleeve 2 enters the locking sleeve 7.

[0043] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-positioning installation tool suitable for intersection joint bearings, characterized in that: It comprises a guide rod (1), a fixing sleeve (2), a guide sleeve (3), a ball transmission part (4), a transmission nut (5), a locking sleeve (7), and a stop nut (8); The middle part of the guide rod (1) is a smooth rod, and both ends are threaded. A stop nut (8), a locking sleeve (7), a fixing sleeve (2), a guide sleeve (3), a ball transmission part (4) and a transmission nut (5) are sequentially sleeved on the guide rod (1), wherein the smooth rod part is inserted into the locking sleeve (7), the fixing sleeve (2) and the guide sleeve (3), and the three can slide on the smooth rod; The transmission nut (5) is rotationally matched with the thread at the rear end of the guide rod (1), and the ball transmission part (4) is located at the front end of the transmission nut (5) and is matched with the thread of the guide rod (1) to convert the spiral rotation motion of the transmission nut (5) into axial linear motion; The inner hole of the guide sleeve (3) is slidably matched with the guide rod (1), and its outer diameter is matched with the inner hole of the bearing for bearing the bearing. The front end surface of the guide sleeve (3) is formed with an arc guide column extending forward for guiding the movement of the fixed sleeve (2). The inner diameter of the fixing sleeve (2) is set according to the outer diameter of the front end of the guide column on the guide sleeve (3), and its outer diameter is set according to the inner diameter of the intersection joint hole. The fixing sleeve (2) and the guide sleeve (3) cooperate to make the two coaxial, thereby achieving the coaxiality of the bearing and the intersection joint hole; The locking sleeve (7) is a cylindrical shell, the center of the front end face of which is formed with a hole, and is slidably matched with the guide rod (1), and the rear end face of which is arranged to be open. The length of the locking sleeve (7) is greater than the length of the fixing sleeve (2), and the inner diameter is greater than the outer diameter of the fixing sleeve (2), so that the fixing sleeve (2) can enter the interior thereof. The rear end face of the locking sleeve (7) abuts against the intersection joint part, and the stop nut (8) cooperates with the thread of the front end of the guide rod (1) to press the locking sleeve (7) against the intersection joint.

2. A self-positioning installation tool suitable for intersection joint bearings according to claim 1, characterized in that: The ball transmission part (4) and the guide rod (1) are driven by balls, and the transmission method between the two is similar to that of a ball screw.

3. A self-positioning installation tool suitable for intersection joint bearings according to claim 1, characterized in that: The outer periphery of the rear end of the guide sleeve (3) is provided with a boss for limiting the bearing position.

4. A self-positioning installation tool suitable for intersection joint bearings according to claim 1, characterized in that: The fixing sleeve (2) is transitionally matched with the intersection joint hole.

5. A self-positioning installation tool suitable for intersection joint bearings according to claim 1, characterized in that: The handle (6) is sleeved on the transmission nut (5) and is used for twisting the transmission nut (5) with less effort.

6. A self-positioning installation tool suitable for intersection joint bearings according to claim 5, characterized in that: Two cylinders are arranged on the rear end surface of the handle (6).

7. A method for using the self-positioning installation tool for intersection joint bearings according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: Install the bearing on the guide sleeve (3); Step 2: Install the fixing sleeve (2), the guide sleeve (3), the ball transmission part (4), and the transmission nut (5) on the guide rod (1) in sequence; Step 3: Insert the fixing sleeve (2) into the intersection joint hole; Step 4: Install the locking sleeve (7) on the guide rod (1) from the front end, and install the stop nut (8) to press the locking sleeve (7) against the surface of the intersection joint part; Step 5: Turn the transmission nut (5), and the ball transmission part (4) converts the spiral motion of the transmission nut (5) into horizontal linear motion, pushing the guide sleeve (3) to move the bearing toward the intersection joint hole. At the same time, the guide sleeve (3) pushes the fixed sleeve (2) to be gradually squeezed out of the intersection joint hole, and the bearing gradually enters the intersection joint hole until the bearing is completely installed. At this time, the fixed sleeve (2) enters the locking sleeve (7).

8. The method for using the self-positioning installation tool for intersection joint bearings according to claim 7, characterized in that: In the fifth step, the handle (6) is sleeved onto the transmission nut (5), and the handle (6) is rotated to drive the transmission nut (5) to rotate.

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