Aircraft countersunk gasket machining tool

Abstract

The utility model discloses an airplane countersink gasket processing tool which comprises a drilling seat, an outer guide sleeve and an inner guide sleeve, a connecting hole and a countersink hole are arranged on the drilling seat, a connector is arranged at the front end of the outer guide sleeve, a limiting end is arranged at the rear end of the outer guide sleeve, an outer guide sleeve through hole is arranged on the outer guide sleeve, and a guide hole for a drill bit to insert is arranged on the inner guide sleeve. A positioning end is arranged at the rear end of the inner guide sleeve; the grinding device further comprises a grinding base, a grinding disc and a connecting rod, a positioning hole is formed in the center of the front face of the grinding base, a plurality of counter bores used for containing the countersink gaskets are formed in the front face of the grinding base, a positioning boss matched with the positioning hole of the grinding base is arranged on the front end face of the grinding disc, and the center of the rear end face of the grinding disc is connected with the connecting rod. According to the utility model, the rejection rate of countersink gasket processing can be reduced, the processing efficiency is improved, and the working intensity is reduced.

Description

Technical Field

[0001] The utility model relates to a tool for machining an airplane countersunk gasket. Background Art

[0002] In aircraft maintenance work, when patches are needed to strengthen the fuselage, wings, hangers, engines, vertical tails and other areas, countersunk gaskets are often used to fill the holes of plain countersunk fasteners. The countersunk repair gaskets commonly used by Boeing are semi-finished products. Workers need to process the hole diameter and thickness of the countersunk gaskets according to the actual situation at the repair site. However, this semi-finished countersunk gasket is a smooth and oblate structural part without the guide holes required for drilling, so it is not convenient to locate and process it, which brings many inconveniences to the maintenance work.

[0003] In the existing method, the countersunk gasket is generally fixed to the countersunk socket of the fastener hole with an adhesive or fixing glue, and then the required hole diameter is drilled with a drill gun, and then the surface of the gasket is polished with sandpaper to achieve the required gasket thickness. When the worker uses a drill gun to drill a hole on the countersunk socket, the cutting force generated by the rotation of the drill bit may cause the gasket originally fixed with glue to rotate, resulting in slower drilling efficiency and easily causing the countersunk gasket to be scrapped; at the same time, the efficiency of polishing with sandpaper is also relatively low. Utility Model Content

[0004] The utility model aims to provide an aircraft countersunk gasket processing tool, which can reduce the scrap rate of countersunk gasket processing, improve processing efficiency and reduce work intensity.

[0005] The purpose of the utility model can be achieved through the following technical solutions.

[0006] A tool for machining an aircraft countersunk gasket, comprising:

[0007] A drilling assembly comprises a drilling seat, an outer guide sleeve and an inner guide sleeve, wherein the drilling seat is provided with a through hole connected by a connecting hole, a countersunk socket hole and a bottom hole, the countersunk socket hole matches the shape of the countersunk socket gasket, the front end of the outer guide sleeve is provided with a connecting head detachably connected to the connecting hole of the drilling seat, the rear end of the outer guide sleeve is provided with a limiting terminal, the outer guide sleeve is provided with an outer guide sleeve through hole for inserting the inner guide sleeve, the inner guide sleeve is provided with a guide hole for inserting a drill bit, and the rear end of the inner guide sleeve is provided with a positioning terminal;

[0008] A grinding assembly includes a grinding seat, a grinding disc and a connecting rod for connecting to a drill gun, a positioning hole is arranged at the center of the front side of the grinding seat, a plurality of countersunk holes for placing countersunk gaskets are arranged on the front side of the grinding seat and are distributed circumferentially around the central axis of the positioning hole, the countersunk holes pass through the front and back sides of the grinding seat, a positioning boss matching the positioning hole of the grinding seat is arranged on the front end face of the grinding disc, and the center of the rear end face of the grinding disc is connected to the connecting rod.

[0009] The countersunk gasket of the utility model is placed in the countersunk hole of the drilling seat, and then the connecting hole of the drilling seat is connected to the outer guide sleeve to fix the outer guide sleeve and the countersunk gasket is pressed by the connecting head of the outer guide sleeve, and the inner guide sleeve is inserted into the through hole of the outer guide sleeve. Then the drill bit of the drilling gun enters from the guide hole of the inner guide sleeve, and the guide hole can be drilled for the countersunk gasket. The drilling process is safe and stable, and the drilling efficiency can be improved. The countersunk gasket with the guide hole drilled is placed in the countersunk hole of the grinding seat. After multiple countersunk gaskets are placed at one time, the positioning boss of the grinding disc is placed in alignment with the positioning hole of the grinding seat. The grinding disc is connected to the drilling gun through a connecting rod, and the grinding disc is driven by the drilling gun to rotate to grind the countersunk gasket to the required thickness. Finally, a countersunk gasket that meets the repair requirements is obtained.

[0010] The utility model also has the following preferred designs:

[0011] The connection hole of the drilling seat of the utility model is an internal threaded hole, and the connecting head of the outer guide sleeve is provided with an external thread, so that the outer guide sleeve and the drilling seat can be threadedly connected.

[0012] The outer diameter of the connector of the outer guide sleeve of the utility model is smaller than the outer diameter of the outer guide sleeve body so that a limiting step is formed at the connector to limit the maximum depth of the outer guide sleeve entering the drilling seat.

[0013] The grinding seat of the utility model is a square flat block.

[0014] The grinding disc of the utility model is a cylindrical flat block.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model fixes the countersunk gasket by means of the drilling seat and the outer guide sleeve, thereby improving the efficiency of drilling the guide hole and reducing the scrap rate of the countersunk gasket.

[0017] 2. The outer guide sleeve of the utility model is provided with a limit end, and the inner guide sleeve is provided with a positioning end corresponding to the limit end, which can prevent the inner guide sleeve from falling into the through hole of the outer guide sleeve and affecting the drilling.

[0018] 3. The grinding seat of the utility model can grind a plurality of countersunk gaskets at one time, thereby improving work efficiency, and the grinding can be completed using a drill gun just like drilling guide holes, thereby facilitating the processing of the countersunk gaskets. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded view of a drilling assembly in an embodiment;

[0020] Figure 2 yes Figure 1 Top view of the middle drilling seat;

[0021] Figure 3 yes Figure 2 A-A section view;

[0022] Figure 4 yes Figure 1 Assembly drawing of the drilling assembly;

[0023] Figure 5 yes Figure 4 A front view of a drilling assembly;

[0024] Figure 6 is a three-dimensional diagram of a grinding seat of a grinding assembly in an embodiment;

[0025] Figure 7 yes Figure 6 A top view of a grinding seat;

[0026] Figure 8 yes Figure 7 B-B section view;

[0027] Fig. 9 is an assembly diagram of a grinding assembly in an embodiment;

[0028] Fig.10 of Fig. 9 Exploded view of the grinding assembly.

[0029] Explanation of the accompanying drawings: 1-drilling seat, 101-bottom hole, 102-connecting hole, 103-countersunk hole, 2-outer guide sleeve, 201-outer guide sleeve through hole, 202-connecting head, 203-limiting terminal, 3-inner guide sleeve, 301-guide hole, 302-positioning terminal, 4-grinding seat, 401-countersunk hole, 402-positioning hole, 5-grinding disc, 501-positioning boss, 6-connecting rod, 7-countersunk gasket. DETAILED DESCRIPTION

[0030] The technical solution of the present utility model is described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can better understand and implement the technical solution of the present utility model.

[0031] A tool for machining an aircraft countersunk gasket, comprising:

[0032] like Figures 1 to 5The drilling assembly shown includes a drilling seat 1, an outer guide sleeve 2 and an inner guide sleeve 3. The drilling seat 1 is provided with a through hole formed by a connecting hole 102, a countersunk socket hole 103 and a bottom hole 101. The countersunk socket hole 103 matches the shape of the countersunk socket gasket 7. The front end of the outer guide sleeve 2 is provided with a connecting head 202 detachably connected to the connecting hole 102 of the drilling seat 1. The rear end of the outer guide sleeve 2 is provided with a limiting terminal 203. The outer guide sleeve 2 is provided with an outer guide sleeve through hole 201 for inserting the inner guide sleeve 3. The inner guide sleeve 3 is provided with a guide hole 301 for inserting the drill bit. The rear end of the inner guide sleeve 3 is provided with a positioning terminal 302.

[0033] like Figures 6 to 10 The grinding assembly shown includes a grinding seat 4, a grinding disc 5 and a connecting rod 6 for connecting to a drill gun. A positioning hole 402 is arranged at the center of the front side of the grinding seat 4. A plurality of countersunk holes 401 for placing countersunk head gaskets 7 are arranged on the front side of the grinding seat 4 and are distributed circumferentially around the central axis of the positioning hole 402. The countersunk holes 401 pass through the front and back sides of the grinding seat 4. A positioning boss 501 matching the positioning hole 402 of the grinding seat 4 is arranged on the front end face of the grinding disc 5. The center of the rear end face of the grinding disc 5 is connected to the connecting rod 6.

[0034] As a preferred embodiment:

[0035] The connection hole 102 of the drilling seat 1 is an internal threaded hole, and the connection head 202 of the outer guide sleeve 2 is provided with an external thread, so that the outer guide sleeve 202 can be threadedly connected with the drilling seat 1. The outer diameter of the connection head 202 of the outer guide sleeve 2 is smaller than the outer diameter of the outer guide sleeve 2 body, so that a limiting step is formed at the connection head 202, limiting the maximum depth of the outer guide sleeve 2 entering the drilling seat 1.

[0036] The grinding seat 4 of this embodiment is a square flat block, and the grinding disc 5 is a cylindrical flat block.

[0037] The use process of the utility model is as follows:

[0038] The countersunk gasket 7 is placed in the countersunk hole 103 of the drilling seat 1, and then the connecting hole 102 of the drilling seat 1 is connected to the outer guide sleeve 2 to fix the outer guide sleeve 2 and the countersunk gasket 7 is pressed by the connecting head 202 of the outer guide sleeve 2, and the inner guide sleeve 3 is inserted into the outer guide sleeve through hole 201. Then the drill bit of the drill gun enters from the guide hole 301 of the inner guide sleeve 3, and the guide hole can be drilled for the countersunk gasket 7. The countersunk gasket 7 after the guide hole is drilled is placed in the countersunk hole 401 of the grinding seat 4. After multiple countersunk gaskets 7 are placed at one time, the positioning boss 501 of the grinding disc 5 is placed in alignment with the positioning hole 402 of the grinding seat 4, and the grinding disc 5 is connected to the drilling gun through the connecting rod 6. The grinding disc 5 is driven by the drilling gun to rotate and grind the countersunk gasket 7 to the required thickness. Finally, a countersunk gasket that meets the repair requirements is obtained.

[0039] The above embodiments are only preferred embodiments of the utility model, but cannot be used as limitations of the utility model. Any modifications and improvements based on the concept of the utility model should fall within the protection scope of the utility model. The specific protection scope shall be subject to the claims.

Claims

1. A tool for machining countersunk gaskets for aircraft, characterized in that: include: A drilling assembly comprises a drilling seat, an outer guide sleeve and an inner guide sleeve, wherein the drilling seat is provided with a through hole connected by a connecting hole, a countersunk socket hole and a bottom hole, the countersunk socket hole matches the shape of the countersunk socket gasket, the front end of the outer guide sleeve is provided with a connecting head detachably connected to the connecting hole of the drilling seat, the rear end of the outer guide sleeve is provided with a limiting terminal, the outer guide sleeve is provided with an outer guide sleeve through hole for inserting the inner guide sleeve, the inner guide sleeve is provided with a guide hole for inserting a drill bit, and the rear end of the inner guide sleeve is provided with a positioning terminal; A grinding assembly includes a grinding seat, a grinding disc and a connecting rod for connecting to a drill gun, a positioning hole is arranged at the center of the front side of the grinding seat, a plurality of countersunk holes for placing countersunk gaskets are arranged on the front side of the grinding seat and are distributed circumferentially around the central axis of the positioning hole, the countersunk holes pass through the front and back sides of the grinding seat, a positioning boss matching the positioning hole of the grinding seat is arranged on the front end face of the grinding disc, and the center of the rear end face of the grinding disc is connected to the connecting rod.

2. The aircraft countersunk gasket processing tool according to claim 1, characterized in that: The connecting hole of the drilling seat is an internal threaded hole, and the connecting head of the outer guide sleeve is provided with an external thread.

3. The aircraft countersunk gasket processing tool according to claim 2, characterized in that: The outer diameter of the connector of the outer guide sleeve is smaller than the outer diameter of the outer guide sleeve body so that a limiting step is formed at the connector.

4. The aircraft countersunk gasket processing tool according to claim 1, characterized in that: The grinding seat is a square flat block.

5. The aircraft countersunk gasket processing tool according to claim 1, characterized in that: The grinding disc is a cylindrical flat block.

Images