Fastening assembly tool for aero-engine borescope cup type locking washer

Abstract

The utility model discloses a fastening assembly tool for aero-engine borescope cup type locking washer, including slide bar, collision block, rear handle, centre fixed head and stamping die head, stamping die head and collision block both are installed on slide bar in sliding mode, centre fixed head is fixed in the front end of slide bar, rear handle is fixed in the rear end of slide bar, stamping die head is fixed in the rear handle, stamping die head is fixed in the rear handle, stamping die head is fixed in the rear handle, stamping die head is fixed in the rear handle, stamping die head is fixed in the rear handle, stamping die head is fixed in the rear handle, stamping die head is fixed in the rear handle. A positioning column used for being inserted into a center hole of a borescope bolt is arranged in the center of the front end of the center fixing head, a pair of knocking columns are oppositely arranged on the edge of the front end of the stamping die head, and the top ends of the knocking columns are pointed ends used for knocking the edge of a cup type locking washer. The effect of knocking the edge of the cup-type locking washer can be achieved in a narrow longitudinal space, it is guaranteed that the cup-type locking washer can be completely coupled with the borescope bolt, the borescope bolt cannot be loosened, the safety risk is reduced, the risk that in the prior art, when an aluminum bar and a hammer are used for laterally knocking, other parts are damaged is avoided, and the service life of the borescope bolt is prolonged. And damage to other parts caused by aluminum skimmings generated when an aluminum bar is used for installation is avoided.

Description

Technical Field

[0001] The utility model relates to a fastening and assembling tool for a cup-type locking washer of an aero-engine bore. Background Art

[0002] There are many special parts in aircraft engines, among which the cup lock washer used to tighten the boresight bolts is a special washer. There are many boresight ports in the engine for boresight inspection. After the inspection, the boresight bolts need to be tightened. When tightening the boresight bolts, a torque wrench is used to ensure the torque range.

[0003] Aircraft safety requirements require 100% reliability. A cup-type locking washer is designed under the borehole bolt to tighten with the borehole bolt to improve reliability. This cup-type locking washer is a very special washer that needs to be matched with the two diagonal grooves of the borehole bolt to achieve a locking and insurance function. Currently, there is no special installation tool. You can only use an aluminum rod and a hammer to knock the edge of the cup-type locking washer from the side to deform the cup-type locking washer and match it with the groove of the borehole bolt to limit the rotation of the borehole bolt and prevent it from loosening.

[0004] However, the gaps between engine components are very small, and the position of the mating surfaces also has diagonal requirements. Due to the lack of space, it is very difficult to install using aluminum rods and hammers, which takes a lot of time but does not achieve the best results. If you are not careful, it may also cause damage to surrounding components, resulting in significant economic losses. If the cup lock washer is not installed properly and does not tighten the bolt, it will also cause safety risks and even cause major safety accidents. Using aluminum rods for installation is easy to produce aluminum chips, which may also damage the parts if they bounce into the precise and critical parts of the engine. Utility Model Content

[0005] The utility model aims to provide a fastening and assembling tool for a cup-type locking washer of an aircraft engine bore, which has a simple structure, low cost, is easy to install, avoids parts damage, and reduces safety risks.

[0006] The purpose of the utility model is achieved through the following technical measures: a fastening and assembly tool for cup-type locking washers of aircraft engine bore probes, characterized in that it includes a slide rod, a bump block, a rear handle, a center fixing head and a stamping die head, the stamping die head and the bump block are both slidably mounted on the slide rod, the center fixing head is fixed to the front end of the slide rod, the rear handle is fixed to the rear end of the slide rod, the front end center of the center fixing head has a positioning column for inserting the center hole of the bore probe bolt, the front end edge of the stamping die head is relatively provided with a pair of knocking columns, and the top end of the knocking column is a tip for knocking the edge of the cup-type locking washer.

[0007] The utility model inserts a positioning column into the center hole of the hole probe bolt for positioning, pushes the impact block to slide on the slide rod and impact the stamping die head, so that the knocking column on the stamping die head knocks the edge of the cup type locking washer in a stamping manner, and the cup type locking washer is deformed and cooperates with the groove of the hole probe bolt. Therefore, the utility model can achieve the effect of knocking the edge of the cup type locking washer in a narrow longitudinal space, ensuring that the cup type locking washer can be fully coupled to the hole probe bolt, so that the hole probe bolt cannot be loosened, reducing safety risks, and the utility model is easy to install, avoiding the risk of damage to other parts when using aluminum rods and hammers for side knocking in the prior art, and also avoiding the damage to other parts caused by aluminum chips generated when using aluminum rods for installation.

[0008] The central fixing head of the utility model is composed of two concentric columns with different diameters, the column with a smaller diameter is the positioning column, and the column with a larger diameter is the connecting column. The connecting column has a threaded hole inside and is threadedly connected to the sliding rod.

[0009] The rear handle of the utility model is a column with a threaded hole inside, which is threadedly connected with the slide rod and then fixed by a fixing piece passing through the threaded hole of the rear handle and the threaded section of the slide rod.

[0010] The punching die head of the utility model is composed of a sleeve and a knocking column arranged on the front end of the sleeve, the through hole of the sleeve is a stepped hole, the rear section hole of the through hole is sleeved on the sliding rod and can slide along the sliding rod, the connecting column of the central fixed head is adapted to the front section hole of the through hole, and the connecting column can touch the stepped surface of the through hole.

[0011] The impact block of the utility model is composed of a spindle-shaped body and a platform at least arranged at one end of the spindle-shaped body, and the impact block impacts the punching die head through the platform.

[0012] Compared with the prior art, the utility model has the following significant effects:

[0013] ⑴ The utility model inserts a positioning column into the center hole of the bore probe bolt for positioning, pushes the impact block to slide on the slide rod and impact the stamping die head, so that the knocking column on the stamping die head knocks the edge of the cup-type locking washer in a stamping manner, and the cup-type locking washer is deformed and cooperates with the groove of the bore probe bolt. Therefore, the utility model can achieve the effect of knocking the edge of the cup-type locking washer in a narrow longitudinal space, ensuring that the cup-type locking washer can be fully coupled to the bore probe bolt, making the bore probe bolt unable to loosen, and reducing safety risks.

[0014] (2) The utility model is easy to install, avoiding the risk of damaging other parts when using aluminum rods and hammers to knock sideways in the prior art, and also avoiding the damage to other parts caused by aluminum chips generated when using aluminum rods for installation.

[0015] ⑶The utility model has the advantages of simple structure, low cost and strong practicability and is suitable for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the structural assembly of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the slide bar of the utility model;

[0019] Figure 3 It is a structural perspective view of the rear handle of the utility model;

[0020] Figure 4 It is a cross-sectional view of the central fixing head of the utility model;

[0021] Figure 5 It is the front view of the punching die head of the utility model;

[0022] Figure 6 is along Figure 5 Sectional view along the midline BB;

[0023] Figure 7 is along Figure 5 Section view along line AA.

[0024] In the figure, 1-slide rod; 2-impact block; 3-rear handle; 4-center fixing head; 5-stamping die head; 6-positioning column; 7-knocking column; 8-connecting column; 9-sleeve; 10-rear section hole; 11-front section hole; 12-spindle-shaped body; 13-platform; 14-thread; 15-screw; 16-threaded hole; 17-hole. DETAILED DESCRIPTION

[0025] like Figures 1 to 7 As shown in FIG. 1 , a fastening assembly tool for a cup-type locking washer of an aircraft engine hole probe is provided, comprising a slide bar 1, a bump block 2, a rear handle 3, a central fixing head 4 and a punching die head 5. In this embodiment, the slide bar 1 is 235 mm long and has threads 14 at both ends. Figure 2 ; See Figure 4 The center fixing head 4 is composed of two concentric columns with different diameters. The column with a smaller diameter is a positioning column 6 for inserting into the center hole of the bore probe bolt. The positioning column 6 is a rectangular parallelepiped and is adapted to the inner four corner holes of the bore probe bolt. The column with a larger diameter is a cylindrical connecting column 8. The connecting column 8 has a threaded hole and is threadedly connected to the front end of the slide rod 1. The center fixing head 4 is used to match the center of the bore probe bolt so that it will not deviate during stamping. Figure 3The rear handle 3 is a cylinder with a threaded hole 16 therein, which is threadedly connected to the rear end of the slide bar 1, and then fixed by a screw 15 passing through the threaded hole of the rear handle 3 and the threaded section of the slide bar 1 through the hole 17.

[0026] The punch die head 5 and the impact block 2 are both slidably mounted on the slide bar 1, see Figures 5 to 7 The punching die head 5 is composed of a sleeve 9 and a pair of knocking posts 7 arranged on the front end of the sleeve 9. The knocking posts 7 are arranged opposite to each other. The top of the knocking posts 7 is a tip for knocking the edge of the cup-type locking washer. In this embodiment, the knocking posts 7 are two cylinders separated by 18.76 mm, and the tip is formed by making an 80° chamfer on the top of the top, grinding the sharp top angle, and finally blunting the sharp edges of all parts, and performing a manganese-based phosphating surface treatment. The through hole of the sleeve 9 is a step hole, and the rear section hole 10 of the through hole is mounted on the slide bar 1 and can slide along the slide bar 1. The connecting post 8 of the central fixed head 4 is adapted to the front section hole 11 of the through hole, and the connecting post 8 can touch the step surface of the through hole.

[0027] The impact block 2 is composed of a spindle-shaped body 12 and platforms 13 arranged at both ends of the spindle-shaped body 12 . The impact block 2 impacts the punching die head 5 through the platform 13 .

[0028] This embodiment is compatible with the cup-type locking washer configuration of LPC and IGV bore probe bolts. According to the cup-type locking washer configuration of other bore probe bolts, the stamping die head can be designed with different diameter sizes and chamfer angles so that it can perfectly match the mating surface of the bore probe bolt.

[0029] The use process of this utility model is:

[0030] 1. Put the cup lock washer under the bore probe bolt, make the buckle of the cup lock washer lock in the slot of the bore probe hole, and torque the bore probe bolt according to the manual requirements.

[0031] 2. Use the utility model to tighten and assemble the tool, insert the center fixing head of the tool into the inner four corner holes of the bore probe bolt, and make the tool face the center of the bore probe bolt.

[0032] 3. Align the punch die head with the hole probe bolt groove that needs to be tightened.

[0033] 4. Push the impact block along the slide bar to hit the stamping die head. The die head deforms the outer edge of the cup-type lock washer to perfectly fit the outer edge groove of the hole probe bolt.

[0034] 5. Check the installation status. If the washer does not fit properly, repeat steps 2-4 until the locking washer fits tightly into the bolt groove.

[0035] The implementation methods of the utility model are not limited to this. According to the above content of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above basic technical ideas of the utility model, the utility model can also make other various forms of modifications, replacements or changes, all of which fall within the scope of protection of the utility model.

Claims

1. A fastening and assembly tool for a cup-type locking washer for an aircraft engine bore, characterized in that: It includes a sliding rod, a collision block, a rear handle, a center fixing head and a punching die head. The punching die head and the collision block are both slidably mounted on the sliding rod. The center fixing head is fixed to the front end of the sliding rod, and the rear handle is fixed to the rear end of the sliding rod. The center of the front end of the center fixing head has a positioning column for inserting the center hole of the hole probe bolt. The front end edge of the punching die head is relatively provided with a pair of knocking columns, and the top of the knocking column is a tip for knocking the edge of the cup-type locking washer.

2. The fastening and assembly tool for the cup-type lock washer of the aircraft engine bore according to claim 1, characterized in that: The central fixed head is composed of two concentric columns with different diameters. The column with a smaller diameter is the positioning column, and the column with a larger diameter is the connecting column. A threaded hole is provided in the connecting column, which is threadedly connected to the sliding rod.

3. The fastening and assembly tool for the cup-type lock washer of the aircraft engine bore according to claim 2, characterized in that: The rear handle is a column with a threaded hole inside, which is threadedly connected to the slide rod and then fixed by a fixing piece passing through the threaded hole of the rear handle and the threaded section of the slide rod.

4. The fastening and assembly tool for the cup-type lock washer of the aircraft engine bore according to claim 3, characterized in that: The stamping die head consists of a sleeve and a knocking column arranged on the front end of the sleeve. The through hole of the sleeve is a stepped hole. The rear section hole of the through hole is mounted on the sliding rod and can slide along the sliding rod. The connecting column of the central fixed head is adapted to the front section hole of the through hole, and the connecting column can touch the stepped surface of the through hole.

5. The fastening and assembly tool for the cup-type lock washer of the aircraft engine bore according to claim 4, characterized in that: The impact block is composed of a spindle-shaped body and a platform at least arranged at one end of the spindle-shaped body, and the impact block impacts the punching die head through the platform.

Images