Assembly tool for lock key screw sleeve

Abstract

The utility model provides an assembly tool for a lock key screw sleeve. The assembly tool comprises a bottom plate, a side plate, a top plate, a cushion block, a movable block, a fixed block and a limiting block. The side plates are hollow rectangular plates; the bottom plate is mounted at the bottoms of the side plates; the top plate is mounted above the side plates; a through hole for mounting a screw sleeve is formed in the center of the top plate; a cushion block is mounted above the bottom plate; the two fixing blocks are fixed to the front end and the rear end of the upper surface of the cushion block respectively. The two movable blocks are slidably mounted at the left end and the right end of the upper surface of the cushion block correspondingly. The adjacent front ends of the movable block and the fixed block are provided with grooves used for installing locking keys. The front ends of the movable block and the fixed block are arc-shaped; a limiting block is arranged in the center of the upper surface of the cushion block; a pin hole is formed in the side plate close to the movable block; the limiting block is cylindrical; the tool is simple in structure and convenient and fast to use, effectively guarantees the fitting degree between the lock key and the threaded sleeve, and improves the qualified rate of products.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical assembly tooling technology, specifically relating to an assembly tooling for a keyway screw sleeve. Background Technology

[0002] Locking key inserts are important connecting parts in military aero engines, widely used in engine housing connections. Due to the low hardness of aluminum-magnesium alloys, the internal threads in threaded connections are severely damaged. Therefore, threaded bushings are often used to protect the internal threads in connection structures. Locking key inserts have anti-loosening properties on both their internal and external threads, which is of great significance for the reliable service of the engine and extending the life of the housing threads. They have functions such as high fatigue resistance, high corrosion resistance, high reliability, self-locking, anti-loosening, and vibration damping. Traditionally, locking key inserts are assembled using a simple fixture. Products made using this assembly method have gaps at the contact point between the locking key and the insert. After testing, the minimum torque that the installed insert can withstand is not up to standard. When using a thread ring gauge to test the external threads of the products, some products have thread go / no-go defects, and some even have jamming. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide an assembly fixture for keyway sleeves that reduces assembly defects and improves product qualification rate.

[0004] This utility model is achieved through the following technical solution:

[0005] An assembly fixture for a keyed screw sleeve includes a nut and a key; a keyway is provided on the side wall of the nut; the key is larger at one end and smaller at the other end; the assembly fixture also includes a base plate, a side plate, a top plate, a pad, a movable block, a fixed block, and a limiting block; the side plate is a hollow rectangular plate; the base plate is installed at the bottom of the side plate; the top plate is installed above the side plate; the top plate has a through hole in the center that communicates with the interior of the side plate and is used to install the nut; a pad is installed above the base plate; the pad is located inside the side plate; there are two fixing blocks, which are fixed to the bottom plate. The pad has two movable blocks, one at each end of its upper surface and the other at the other end of its upper surface, located within the side plate. The movable blocks are slidably mounted on the left and right ends of the pad's upper surface, respectively, and are located within the side plate, with a clearance fit between the movable blocks and the inner wall of the side plate. The front ends of the movable blocks and the fixed blocks are provided with grooves for installing locking keys. A limiting block is provided in the center of the pad's upper surface. The upper surface of the limiting block is horizontal to the upper surfaces of the movable blocks and the fixed blocks. A pin hole is provided on the side plate near the movable blocks. The limiting block is cylindrical. The movable blocks and the fixed blocks are distributed around the limiting block.

[0006] To facilitate the removal of the keyed nut after processing, an assembly tool for a keyed nut also includes a mounting block and a spring; the mounting block is a rectangular tube and is horizontally mounted in the center of the upper surface of the pad, with the openings at both ends of the mounting block facing the two movable blocks respectively; the spring is horizontally mounted inside the mounting block, with both ends of the spring contacting the front ends of the two movable blocks respectively; the limiting block is mounted above the mounting block.

[0007] The beneficial effects of this utility model are:

[0008] This utility model tooling has a simple structure and is easy and quick to use. It effectively ensures the fit between the locking key and the screw sleeve, and improves the product qualification rate. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings.

[0010] Figure 1 This is a schematic diagram of the structure of the base plate described in this utility model.

[0011] Figure 2 yes Figure 1 AA sectional view.

[0012] Figure 3 This is a schematic diagram of the key-locking nut described in this utility model.

[0013] As shown in the figure: 1-base plate; 2-side plate; 3-top plate; 4-pad; 5-mounting block; 51-spring; 6-moving block; 7-fixed block; 8-limiting block; 9-nut; 10-locking key. Detailed Implementation

[0014] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0015] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0016] In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0017] like Figure 3 The above is a schematic diagram of the fit between the nut 9 and the locking key 10 in this application; a keyway is provided on the side wall of the nut 9; one end of the locking key 10 is large and the other end is small, and the large end is interference-fitted with the keyway of the nut 9.

[0018] like Figures 1-2 The assembly fixture shown includes: a base plate 1, a side plate 2, a top plate 3, a pad 4, a mounting block 5, a spring 51, a movable block 6, a fixed block 7, and a limit block 8.

[0019] The side plate 2 is a rectangular plate with a through-hole; pin holes are provided on the side plate 2 near the movable block 6.

[0020] The base plate 1 is installed at the bottom of the side plate 2.

[0021] The top plate 3 is installed above the side plate 2; the top plate 3 has a through hole in the center for installing the screw sleeve 9. The pad 4 is installed above the bottom plate 1.

[0022] The fixing block 7 consists of two blocks, which are fixed to the front and rear ends of the upper surface of the pad block 4, respectively.

[0023] The movable block 6 consists of two pieces, which are slidably installed on the left and right ends of the upper surface of the pad block 4, and the movable block 6 is in clearance fit with the inner wall of the side plate 2; the front ends of the movable block 6 and the fixed block 7 are provided with grooves for installing the locking key 10; the front ends of the movable block 6 and the fixed block 7 are both arc-shaped; the movable block 6 and the fixed block 7 are distributed around the limiting block 8.

[0024] The limiting block 8 is installed in the center of the upper surface of the pad block 4; the upper surface of the limiting block 8 is horizontal with the upper surfaces of the movable block 6 and the fixed block 7; the limiting block 8 is cylindrical.

[0025] To facilitate removal of the key screw sleeve after machining, the mounting block 5 is a rectangular tube and is horizontally installed in the center of the upper surface of the pad block 4, with the openings at both ends of the mounting block 5 facing the two movable blocks 6 respectively; the spring 51 is horizontally installed inside the mounting block 5, with both ends of the spring 51 contacting the front ends of the two movable blocks 6 respectively; the limiting block 8 is installed above the mounting block 5.

[0026] Work steps:

[0027] Place the locking key 10 into the groove between the adjacent movable block 6 and fixed block 7, and sleeve it over the limiting block 8 with the smaller end facing down and the larger end facing up. Drive a pin through the pin hole on the side plate 2 to push the movable block 6 inward. The locking key 10 is clamped between the movable block 6, fixed block 7, and limiting block 8, and fixed in the groove between the movable block 6, fixed block 7, and limiting block 8. Then, install the top plate 3 above the side plate 2, put the nut 9 into the through hole in the center of the top plate 3, and align the keyway on the nut 9 with the larger end of the locking key 10. Then, start the press to press down. The nut 9 and the locking key 10 are assembled by interference fit. Then, remove the pin on the side plate 2. The spring 51 in the mounting block 5 pushes the movable block 6 to both sides due to its elasticity, so that the locking key 10 is no longer clamped and fixed in the groove between the movable block 6, fixed block 7, and limiting block 8.

[0028] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.

Claims

1. An assembly fixture for a keyed screw sleeve, comprising a nut (9) and a key (10); a keyway is provided on the side wall of the nut (9); the key (10) is larger at one end and smaller at the other end; characterized in that It also includes a base plate (1), a side plate (2), a top plate (3), a pad (4), a movable block (6), a fixed block (7), and a limiting block (8); the side plate (2) is a hollow rectangular plate; the base plate (1) is installed at the bottom of the side plate (2); the top plate (3) is installed above the side plate (2); the top plate (3) has a through hole in the center that communicates with the interior of the side plate (2) and is used to install a nut (9); a pad (4) is installed above the base plate (1); the pad (4) is located inside the side plate (2); the fixed block (7) consists of two blocks, which are fixed at the front and rear ends of the upper surface of the pad (4), respectively, and positioned... Inside the side plate (2); the movable block (6) consists of two pieces, which are slidably installed on the left and right ends of the upper surface of the pad (4) and located inside the side plate (2), and the movable block (6) is in clearance fit with the inner wall of the side plate (2); the front ends of the movable block (6) and the fixed block (7) are provided with grooves for installing the lock key (10); the front ends of the movable block (6) and the fixed block (7) are both arc-shaped; a limiting block (8) is provided in the center of the upper surface of the pad (4); the upper surface of the limiting block (8) is horizontal with the upper surface of the movable block (6) and the fixed block (7); a pin hole is provided on the side plate (2) near the movable block (6).

2. The assembly fixture for a keyway sleeve according to claim 1, characterized in that... It also includes a mounting block (5) and a spring (51); the mounting block (5) is a rectangular tube and is installed horizontally in the center of the upper surface of the pad (4), and the openings at both ends of the mounting block (5) face the two movable blocks (6); the spring (51) is installed horizontally inside the mounting block (5), and the two ends of the spring (51) are in contact with the front ends of the two movable blocks (6); the limiting block (8) is installed above the mounting block (5).

3. The assembly fixture for a keyway sleeve according to claim 1, characterized in that... The limiting block (8) is cylindrical.

4. The assembly fixture for a keyway sleeve according to claim 1, characterized in that... The movable block (6) and the fixed block (7) are both distributed around the limiting block (8).

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