A tooling assembly for disassembling self-lubricating tapered pins

Abstract

This utility model relates to the field of self-lubricating tapered pin technology, specifically disclosing a tooling assembly for disassembling a self-lubricating tapered pin, including a fork lug support, a self-lubricating tapered pin, and a tooling base. The fork lug support is provided with a tapered through hole. The self-lubricating tapered pin includes a tapered pin body that passes through the tapered through hole and a tapered sleeve that is sleeved on the outside of the tapered pin body. One end of the tapered pin body has a threaded hole. The tooling base includes a limiting end cap and a screw located inside the limiting end cap. The limiting end cap abuts against the outer wall of the fork lug support to form a blocking limit. The screw rotates with the threaded hole to drive the tapered pin body to move axially, thereby disassembling and removing the tapered pin body from the tapered through hole of the fork lug support. This disassembly process will not damage the tapered pin body and the tapered sleeve, and allows the tapered pin body to be disassembled within a small lateral space. The disassembly process is more convenient, faster, easier, and less strenuous.

Description

Technical Field

[0001] This utility model relates to the field of self-lubricating tapered pin technology, specifically to a tooling assembly for disassembling self-lubricating tapered pins. Background Technology

[0002] Self-lubricating tapered pins are used to mount on the fork lugs of the actuators in aircraft flight control systems. The tapered pin body and tapered sleeve of the self-lubricating tapered pin eliminate clearance. However, during loading, the tapered sleeve can deform, causing the tapered pin body to lock up. This makes it difficult to remove the tapered pin body from the fork lug support when replacing it. Current removal methods involve using a hammer to strike one end of the tapered pin body to loosen the locked sleeve and pin body, allowing removal. However, this method easily damages the tapered pin body and sleeve. Furthermore, due to the limited lateral space on aircraft and the small distance between components, it's difficult to insert a hammer for significant striking, making the removal process extremely inconvenient, time-consuming, and labor-intensive. Although there is some space in the longitudinal direction, this space cannot be effectively utilized using a hammering method. Utility Model Content

[0003] The present invention aims to provide a tooling assembly for disassembling self-lubricating tapered pins, so as to solve at least one of the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a tooling assembly for disassembling a self-lubricating tapered pin, comprising a fork lug support, a self-lubricating tapered pin, and a tooling base. The fork lug support is provided with a tapered through hole. The self-lubricating tapered pin includes a tapered pin body that passes through the tapered through hole and a tapered sleeve that is sleeved on the outside of the tapered pin body. One end of the tapered pin body is provided with a threaded hole. The tooling base includes a limiting end cap and a screw rod provided on the inner side of the limiting end cap. The limiting end cap abuts against the outer wall of the fork lug support to form a blocking limit. The screw rod rotates with the threaded hole to drive the tapered pin body to move axially, thereby disassembling and removing the tapered pin body from the tapered through hole of the fork lug support.

[0005] Preferably, it also includes a wrench, one end of which is provided with a polygonal slot, and the outer side of the limiting end cap is provided with a polygonal protrusion, which is locked in place with the polygonal slot of the wrench.

[0006] Preferably, the fork lug support includes a base and two lugs disposed opposite to each other on the base, with tapered through holes disposed opposite to each of the two lugs.

[0007] Preferably, the tapered sleeve has a slit, and the tapered sleeve is fitted between the wall of one of the tapered through holes and the outer wall of the tapered pin.

[0008] Preferably, the end of the tapered pin that is away from the tooling base protrudes from the outside of the tapered through hole and is threaded with a nut.

[0009] Preferably, the limiting end cap includes a circular cover plate and an annular protrusion located on the circumferential outer ring of the circular cover plate and extending inward. The annular protrusion abuts against the outer wall of the fork lug support to form a blocking and limiting action.

[0010] Preferably, an annular groove is formed between the annular protrusion and the screw, and anti-rotation limiting blocks are respectively provided on both sides of one end of the conical pin, with the anti-rotation limiting blocks located in the annular groove.

[0011] Preferably, the surface of the annular bump is provided with a buffer pad.

[0012] Preferably, the cushioning pad is a ring-shaped fabric liner.

[0013] This utility model has the following beneficial effects:

[0014] (1) A torque is applied to the tooling base by a wrench, causing the tooling base to rotate. Because the limiting end cap abuts against the outer wall of the fork lug support to form a blocking limit, the screw of the tooling base engages with the threaded hole of the tapered pin to convert the rotational motion into linear motion, thereby causing the tapered pin to move axially. This facilitates the removal of the tapered pin from the tapered through hole of the fork lug support. This removal process does not damage the tapered pin or the tapered sleeve, and allows for removal within a small lateral space. Furthermore, the lever principle of the wrench ensures full utilization of the longitudinal space, making the removal process more convenient, quick, and effortless. The tooling assembly has a simple, practical, reliable, and stable structure, and its small size meets the requirements of miniaturization design.

[0015] (2) A buffer pad is provided on the surface of the annular protrusion. The buffer pad is an annular fabric pad. The fabric pad is in close contact with the outer end face of the fork ear support to form a self-lubricating friction pair. This can reduce the friction coefficient between the fabric pad and the outer end face of the fork ear support, reduce the applied rotational force, avoid rigid contact between the annular protrusion and the outer side wall of the fork ear support, and play the function of elastic buffering. This can reduce the friction marks on the outer end face of the fork ear support. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the disassembly process from one perspective, representing an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the disassembly process from another perspective of an embodiment of this utility model.

[0019] Figure 4 yes Figure 3 Sectional view at point AA.

[0020] Figure 5 This is a schematic diagram of a self-lubricating tapered pin according to an embodiment of the present invention, viewed from one angle.

[0021] Figure 6 This is a schematic diagram of the self-lubricating tapered pin of an embodiment of the present invention from another perspective.

[0022] Figure 7 This is an external view of the tooling base of an embodiment of this utility model.

[0023] Figure 8 This is an inner view of the tooling base of an embodiment of this utility model.

[0024] Figure 9 This is a schematic diagram of the structure of the fork lug support according to an embodiment of the present invention.

[0025] Attached figures are labeled as follows: 1. Fork lug support, 11. Base, 12. Lug, 2. Conical pin, 21. Anti-rotation limiting block, 3. Conical sleeve, 4. Tooling base, 41. Limiting end cap, 411. Circular cover plate, 412. Annular protrusion, 413. Annular groove, 42. Screw, 43. Polygonal protrusion, 5. Wrench, 51. Polygonal slot, 6. Conical through hole, 7. Threaded hole, 8. Buffer pad. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they 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.

[0029] See Figure 1-9 As shown in the figure, as an embodiment of the present invention, a tooling assembly for disassembling a self-lubricating tapered pin is provided, including a fork lug support 1, a self-lubricating tapered pin, and a tooling base 4. The fork lug support 1 is provided with a tapered through hole 6. The self-lubricating tapered pin includes a tapered pin body 2 that passes through the tapered through hole 6 and a tapered sleeve 3 that is sleeved outside the tapered pin body 2. One end of the tapered pin body 2 is provided with a threaded hole 7. The tooling base 4 includes a limiting end cap 41 and a screw 42 provided on the inner side of the limiting end cap 41. The limiting end cap 41 abuts against the outer side wall of the fork lug support 1 to form a blocking limit. The screw 42 and the threaded hole 7 are threadedly rotated to drive the tapered pin body 2 to move axially, thereby disassembling and removing the tapered pin body 2 from the tapered through hole 6 of the fork lug support 1. Specifically, it also includes a wrench 5, one end of which is provided with a polygonal slot 51, and the outer side of the limiting end cap 41 is provided with a polygonal protrusion 43. The polygonal protrusion 43 and the polygonal slot 51 of the wrench 5 are correspondingly locked together. Both the polygonal slot 51 and the polygonal protrusion 43 are hexagonal shapes that correspond to each other. By rotating the wrench 5, the tooling base 4 is driven to rotate. Since the limiting end cap 41 abuts against the outer wall of the fork ear support 1 to form a blocking limit, the screw 42 is threadedly rotated with the threaded hole 7 to drive the tapered pin 2 to move axially. This facilitates the removal of the tapered pin 2 from the tapered through hole 6 of the fork lug support 1. The removal process does not damage the tapered pin 2 or the tapered sleeve 3. Furthermore, by applying torque to the tooling base 4 with the wrench 5, the threaded engagement between the screw 42 of the tooling base 4 and the threaded hole 7 of the tapered pin 2 converts rotational motion into linear motion. This allows the tapered pin 2 to be removed within a relatively small lateral space. The lever principle of the wrench 5 also ensures full utilization of the longitudinal space, making the removal process more convenient, quick, and effortless. Moreover, this tooling assembly has a simple, practical, reliable, and stable structure with a small size, meeting the requirements of miniaturization design.

[0030] In this embodiment, the fork lug support 1 includes a base 11 and two lugs 12 disposed opposite to each other on the base 11. Conical through holes 6 are disposed opposite to each other on the two lugs 12. A gap is provided on the conical sleeve 3, which has a better elastic expansion and contraction effect and prevents irreversible deformation and damage. The conical sleeve 3 is fitted between the hole wall of one of the conical through holes 6 and the outer wall of the conical pin body 2.

[0031] In this embodiment, the end of the tapered pin 2 away from the tooling base 4 protrudes from the outside of the tapered through hole 6 and is threaded with a nut, so as to fix the self-lubricating tapered pin on the fork lug support 1. When it is necessary to disassemble the self-lubricating tapered pin, the nut needs to be removed first.

[0032] In this embodiment, the limiting end cap 41 includes a circular cover plate 411 and an annular protrusion 412 located on the outer circumference of the circular cover plate 411 and extending inward. The annular protrusion 412 abuts against the outer wall of the fork ear support 1 to form a blocking limit, thereby ensuring that the limiting end cap 41 can only rotate and will not move along the axial direction, so that the conical pin 2 can convert the rotational motion into linear motion, so as to facilitate the flexible removal of the conical pin 2 from the fork ear support 1.

[0033] In this embodiment, an annular groove 413 is formed between the annular protrusion 412 and the screw 42. Anti-rotation limiting blocks 21 are respectively provided on both sides of one end of the conical pin 2. The anti-rotation limiting blocks 21 are located in the annular groove 413. When the conical pin 2 is removed by axial movement, the anti-rotation limiting blocks 21 gradually move towards the bottom wall of the annular groove 413, thereby realizing the removal of the conical pin 2 from the conical through hole 6 of the fork ear support 1.

[0034] In this embodiment, a buffer pad 8 is provided on the surface of the annular protrusion 412. The buffer pad 8 is an annular fabric pad. The disassembly tooling is first roughened by sandblasting, and then the fabric pad is bonded to the surface of the annular protrusion 412 by pre-expansion curing technology. In use, the fabric pad is in close contact with the outer end face of the fork ear support, forming a self-lubricating friction pair. This can reduce the coefficient of friction between the fabric pad and the outer end face of the fork ear support 1, reduce the applied rotational force, and avoid rigid contact between the annular protrusion 412 and the outer side wall of the fork ear support 1, thus playing an elastic buffering function. This can reduce friction marks on the outer end face of the fork ear support 1 and play a better protective role.

[0035] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A tooling assembly for disassembling a self-lubricating tapered pin, characterized in that: The device includes a fork lug support, a self-lubricating tapered pin, and a tooling base. The fork lug support has a tapered through hole. The self-lubricating tapered pin includes a tapered pin body that passes through the tapered through hole and a tapered sleeve that is sleeved on the outside of the tapered pin body. One end of the tapered pin body has a threaded hole. The tooling base includes a limiting end cap and a screw located inside the limiting end cap. The limiting end cap abuts against the outer wall of the fork lug support to form a blocking limit. The screw rotates with the threaded hole to drive the tapered pin body to move axially, thereby removing the tapered pin body from the tapered through hole of the fork lug support.

2. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 1, characterized in that: It also includes a wrench, one end of which is provided with a polygonal slot, and the outer side of the limiting end cap is provided with a polygonal protrusion, which is locked in place with the polygonal slot of the wrench.

3. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 1, characterized in that: The fork-shaped support includes a base and two lugs that are oppositely disposed on the base, with tapered through holes respectively disposed on the two lugs.

4. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 1, characterized in that: The tapered sleeve has a slit and is fitted between the wall of one of the tapered through holes and the outer wall of the tapered pin.

5. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 1, characterized in that: The end of the tapered pin, away from the tooling base, protrudes from the tapered through hole and is threaded with a nut.

6. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 1, characterized in that: The limiting end cap includes a circular cover plate and an annular protrusion located on the outer circumferential ring of the circular cover plate and extending inward. The annular protrusion abuts against the outer wall of the fork lug support to form a blocking and limiting mechanism.

7. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 6, characterized in that: An annular groove is formed between the annular protrusion and the screw. Anti-rotation limiting blocks are respectively provided on both sides of one end of the tapered pin, and the anti-rotation limiting blocks are located in the annular groove.

8. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 6, characterized in that: The surface of the annular bump is provided with a cushioning pad.

9. The tooling assembly for disassembling a self-lubricating tapered pin according to claim 8, characterized in that: The cushioning pad is a ring-shaped fabric liner.

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