CN219443562U - Repair positioning tool for alignment screw hole of engine gear box blanking cover - Google Patents
Repair positioning tool for alignment screw hole of engine gear box blanking cover Download PDFInfo
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- CN219443562U CN219443562U CN202320134549.4U CN202320134549U CN219443562U CN 219443562 U CN219443562 U CN 219443562U CN 202320134549 U CN202320134549 U CN 202320134549U CN 219443562 U CN219443562 U CN 219443562U
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- positioning
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- guide sleeve
- mounting hole
- bushing
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Abstract
A repair positioning tool for an engine gear box blanking cover alignment screw hole comprises a positioning plate, a drilling guide sleeve, a first limit bolt, a positioning bushing, a second limit bolt and a center positioning sleeve, wherein the drilling guide sleeve, the first limit bolt, the positioning bushing, the second limit bolt and the center positioning sleeve are arranged on the positioning plate. The center of the positioning plate is provided with a center positioning hole; a guide sleeve mounting hole and a bushing mounting hole are symmetrically formed in two sides of a central positioning hole in the positioning plate, the guide sleeve mounting hole corresponds to the drilling guide sleeve, and the bushing mounting hole corresponds to the positioning bushing; the positioning plate is also provided with a first limit bolt mounting hole and a second limit bolt mounting hole; the first limit bolt mounting hole corresponds to the first limit bolt, and the second limit bolt mounting hole corresponds to the second limit bolt. The drilling guide sleeve is provided with a first locking notch which is matched with the first limit bolt. The positioning bushing is provided with a second locking notch, and the second locking notch is matched with the second limit bolt. The positioning tool can be used for punching the gear box on line, and can ensure the positioning accuracy of punching.
Description
Technical Field
The utility model relates to the technical field of aircraft ground maintenance, in particular to a repair positioning tool for an engine gear box blanking cover alignment screw hole.
Background
The engine gearbox is an important component in the power system of the aircraft, and a blocking cover (N2 blocking cover) of the gearbox is required to be opened periodically for overhauling and maintenance. The plugging cover of the gear box is used in place for a long time, so that the gear box, the plugging cover, the alignment screw holes on the gear box and aligned with the plugging cover and the adjusting studs in the alignment screw holes are adhered to each other to different degrees, the plugging cover is very difficult to open, the adhesion parts are decomposed in a mode of damaging original parts when the plugging cover is regularly opened and overhauled each time, the damaged parts are decomposed to damage the alignment screw holes on the gear box, the alignment screw holes on the gear box are required to be drilled in situ again for repairing after the plugging cover is opened and overhauled each time, and the original damaged alignment screw holes are repaired in a mode of re-punching teeth after in-situ reaming.
Due to the complex structure of the aircraft engine, the blanking cover 100 is disassembled and the positioning accuracy and the drilling accuracy are strictly considered when punching holes in the gear case 200. Referring to fig. 1 of the drawings, the conventional method is as follows: the blanking cover 100 and the whole gear box 200 are removed and transferred to a precision machine tool, a new alignment screw hole for repairing is drilled at the original alignment screw hole of the gear box 200 again after the blanking cover is positioned by a special fixture, namely, after the central adjusting hole 300 of the gear box is required to be positioned, a punching device is used for punching a first adjusting alignment screw hole 301 and a second adjusting alignment screw hole 302 on two sides of the central adjusting hole 300 of the gear box, and the first adjusting stud 401 and the second adjusting stud 402 can be stably installed in the new alignment screw hole in situ. The traditional method needs to remove the base, the gear box and a plurality of related parts on the periphery, and can be completed by matching with a plurality of people, thereby being time-consuming, labor-consuming and low in repair efficiency. Therefore, the applicant needs to develop an efficient tool for in-situ drilling a new alignment screw hole on a gear box without disassembling the gear box of an engine, and can ensure the positioning precision and the drilling precision during punching.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a repair positioning tool for an alignment screw hole of a blocking cover of an engine gearbox, which overcomes the defects in the prior art.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the repair positioning tool for the positioning screw hole of the engine gear box blanking cover comprises a positioning plate, a drilling guide sleeve arranged on the positioning plate, a first limit bolt matched with the drilling guide sleeve, a positioning bush, a second limit bolt matched with the positioning bush and a center positioning sleeve;
the center of the positioning plate is provided with a center positioning hole corresponding to the center positioning sleeve;
a guide sleeve mounting hole and a bushing mounting hole are symmetrically formed in the positioning plate and located on two sides of the central positioning hole; the guide sleeve mounting hole corresponds to the drilling guide sleeve, and the bushing mounting hole corresponds to the positioning bushing;
a first limit bolt mounting hole and a second limit bolt mounting hole are further formed in the locating plate and located on two sides of the central locating hole, the first limit bolt mounting hole is located on one side close to the guide sleeve mounting hole, and the second limit bolt mounting hole is located on one side close to the bushing mounting hole; the first limit bolt mounting hole corresponds to the first limit bolt, and the second limit bolt mounting hole corresponds to the second limit bolt;
a guide hole is formed in the axial direction of the drilling guide sleeve; the outer wall of the drilling guide sleeve is provided with a first locking notch which is matched with the first limit bolt;
a guide hole is formed in the axis direction of the positioning bushing; the outer wall of the positioning bushing is provided with a second locking notch which is matched with the second limit bolt.
Further, the drilling guide sleeve comprises a primary guide sleeve round table and a secondary guide sleeve round table with different outer diameters, the outer diameter of the primary guide sleeve round table is matched with the guide sleeve mounting hole, and the outer diameter of the secondary guide sleeve round table is larger than the guide sleeve mounting hole.
Further, the positioning bush comprises a first-stage bush round table and a second-stage bush round table with different outer diameters, the outer diameter of the first-stage bush round table of the positioning bush is matched with the bush mounting hole, and the outer diameter of the second-stage bush round table of the positioning bush is larger than the bush mounting hole.
Further, the first locking notch is formed in the outer wall of the second-stage guide sleeve round table of the drilling guide sleeve, and the first limit bolt is interfered to the outer wall of the second-stage guide sleeve round table on the drilling guide sleeve.
Further, the second locking notch is formed in the outer wall of the second-stage bushing circular table of the positioning bushing, and the second limit bolt is interfered to the outer wall of the second-stage bushing circular table of the positioning bushing.
Preferably, the first limit bolt is provided with an external thread and an internal thread of the first limit bolt mounting hole for matching, and an internal hexagonal wrench jack is formed in the top surface of the first limit bolt.
Preferably, the second limit bolt is provided with an external thread and an internal thread of the second limit bolt mounting hole for matching, and an internal hexagonal wrench jack is formed in the top surface of the second limit bolt.
Preferably, the outer diameter of the center positioning sleeve is matched with the center positioning hole.
Compared with the prior art, the utility model has the beneficial effects that:
1) The repair positioning tool for the positioning screw hole of the engine gear box blanking cover utilizes the combination of the positioning plate, the drilling guide sleeve, the first limiting bolt, the positioning bushing, the second limiting bolt and the central positioning sleeve, can punch a new positioning screw hole for repair on the gear box in situ on line, and can ensure the positioning precision and the drilling precision of punching.
2) Because the engine gear box is punched on line, the steps of dismantling the base, the gear box and a plurality of related parts on the periphery are reduced, the cooperation of multiple persons is not needed, the time and the labor are saved, and the repair efficiency is high.
In order that the utility model may be more clearly understood, preferred embodiments of the utility model will be described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a diagram of the positional relationship between an engine gearbox and a blanking cover in the background art;
FIG. 2 is a view of the usage status reference of the present utility model;
fig. 3 is a schematic overall structure of the present utility model.
The attached drawings are identified:
the device comprises a 1-positioning plate, a 2-drilling guide sleeve, a 3-first limit bolt, a 4-positioning bushing, a 5-second limit bolt and a 6-center positioning sleeve; 11-a central positioning hole, 12-a guide sleeve mounting hole, 13-a bushing mounting hole, 14-a first limit bolt mounting hole and 15-a second limit bolt mounting hole; 21-a first locking notch; 41-second locking notch.
Detailed Description
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are primarily for distinguishing between different devices, elements, or components (the particular categories and configurations may be the same or different) and are not intended to indicate or imply relative importance or quantity of the devices, elements, or components indicated, but are not to be construed as indicating or implying relative importance.
Furthermore, unless explicitly stated or limited otherwise, the terms "mounted," "configured with," "engaged with/connected to," and the like, are to be construed broadly as meaning, for example, "connected to," whether fixedly connected to, detachably connected to, or integrally connected to; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements; the specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-3, the utility model provides a repair positioning tool for a positioning screw hole of a blocking cover of an engine gearbox, which comprises a positioning plate 1, a drilling guide sleeve 2 detachably arranged on the positioning plate 1, a first limit bolt 3 matched with the drilling guide sleeve 2, a positioning bushing 4, a second limit bolt 5 matched with the positioning bushing 4 and a center positioning sleeve 6.
The center of the locating plate 1 is provided with a center locating hole 11 corresponding to the center locating sleeve 6, and the outer diameter of the center locating sleeve 6 is matched with the center locating hole 11, so that the center locating sleeve 6 can be sleeved in the center locating hole 11, and the centering locating effect is achieved.
Further, a guide sleeve mounting hole 12 and a bushing mounting hole 13 are symmetrically formed on the positioning plate 1 and located on two sides of the central positioning hole 11; the guide sleeve mounting hole 12 corresponds to the drilling guide sleeve 2, so that the drilling guide sleeve 2 can be installed in the guide sleeve mounting hole 12 in a pluggable manner; the bushing mounting holes 13 correspond to the positioning bushing 4 such that the positioning bushing 4 is pluggable mounted within the bushing mounting holes 13.
Further, a first limit bolt mounting hole 14 and a second limit bolt mounting hole 15 are further formed in the locating plate 1 and located on two sides of the central locating hole 11, the first limit bolt mounting hole 14 is located on one side close to the guide sleeve mounting hole 12, and the second limit bolt mounting hole 15 is located on one side close to the bushing mounting hole 13; the first limit bolt mounting hole 14 corresponds to the first limit bolt 3, so that the first limit bolt 3 can be screwed into the first limit bolt mounting hole 14; the second limit bolt mounting hole 15 corresponds to the second limit bolt 5 such that the second limit bolt 5 can be screwed into the second limit bolt mounting hole 15.
The drilling guide sleeve 2 comprises a primary guide sleeve round table and a secondary guide sleeve round table with different outer diameters, the primary guide sleeve round table and the secondary guide sleeve round table enable the drilling guide sleeve 2 to be in a boss shape, the outer diameter of the primary guide sleeve round table is matched with the guide sleeve mounting hole 12, the primary guide sleeve round table can be inserted into the guide sleeve mounting hole 12, the outer diameter of the secondary guide sleeve round table is larger than the guide sleeve mounting hole 12, and the secondary guide sleeve round table is located outside the guide sleeve mounting hole 12.
Further, a guiding hole for a drill to pass through is formed in the axial direction of the drilling guide sleeve 2.
Further, a first locking notch 21 is arranged on the outer wall of the second-stage guide sleeve round table of the drilling guide sleeve 2, the first locking notch 21 is matched with the first limit bolt 3, so that the first limit bolt 3 is interfered to the outer wall of the second-stage guide sleeve round table of the drilling guide sleeve 2, the drilling guide sleeve 2 is prevented from rotating in the guide sleeve mounting hole 12, and deviation of a hole position caused by displacement of the drilling guide sleeve 2 in the drilling process is avoided.
The first limit bolt 3 is provided with external threads matched with internal threads of the first limit bolt mounting hole 14, and an internal hexagonal wrench jack is formed in the top surface of the first limit bolt 3.
The positioning bush 4 comprises a primary bush round table and a secondary bush round table with different outer diameters, the primary bush round table and the secondary bush round table enable the positioning bush 4 to be in a boss shape, the outer diameter of the primary bush round table of the positioning bush 4 is matched with the bush mounting hole 13, the primary bush round table can be inserted into the bush mounting hole 13, the outer diameter of the secondary bush round table of the positioning bush 4 is larger than the bush mounting hole 13, and the secondary bush round table is located outside the bush mounting hole 13.
Further, a guiding hole is formed in the axial direction of the positioning bushing 4, and the guiding hole is used for the first adjusting stud 401 or the second adjusting stud 402 to pass through and then be locked by the second limiting bolt 5.
Further, a second locking notch 41 is arranged on the outer wall of the second-stage bushing circular table of the positioning bushing 4, the second locking notch 41 is matched with the second limit bolt 5, so that the second limit bolt 5 is interfered to the outer wall of the second-stage bushing circular table on the positioning bushing 4, the positioning bushing 4 is prevented from rotating in the bushing mounting hole 13, and an accurate alignment effect is achieved.
The second limit bolt 5 is provided with external threads matched with internal threads of the second limit bolt mounting hole 15, and an internal hexagonal wrench jack is formed in the top surface of the second limit bolt 5.
The outer diameter of the central positioning sleeve 6 is matched with the central positioning hole 11, so that the central positioning sleeve 6 can be rotatably inserted into the central positioning hole 11 to play a role in centering and positioning.
The utility model relates to a repair location frock of engine gear case blanking cover counterpoint screw, its use flow in the actual operating mode is:
1) The center positioning sleeve 6 is sleeved on the center adjusting hole 300 of the engine gearbox, and the center positioning hole 11 on the positioning plate 1 is sleeved on the center positioning sleeve 6, so that the centering and positioning effects of the positioning plate 1 are achieved;
2) The second adjusting stud 402 is reserved to penetrate out of the bushing mounting hole 13 and the positioning bushing 4, the positioning bushing 4 is inserted into the bushing mounting hole 13, and the positioning bushing 4 is fixed through the second limiting bolt 5; the center positioning sleeve 6 is used as a first positioning point, and the positioning bushing 4 is matched with the second adjusting stud 402 to be used as a second positioning point, so that the accurate alignment of a third positioning point (the position of the first adjusting alignment screw hole 301) on the positioning plate 1 and the original alignment screw hole is ensured;
3) Drilling guide sleeve 2 is sleeved in guide sleeve mounting hole 12, first limit bolt 3 is used for fixing drilling guide sleeve 2, drill bit passes through drilling guide sleeve 2 and drills new alignment screw hole for repairing at original alignment screw hole position on gear box 200;
4) In the same way, after the first repair hole is drilled at the position of the first adjustment alignment screw hole 301 (previous steps 1 to 3), a second repair hole is drilled at the position of the second adjustment alignment screw hole 302.
Compared with the prior art, the repair positioning tool for the positioning screw holes of the engine gear box blanking cover of the scheme can be used for punching the new positioning screw holes for repair on the gear box on line by utilizing the combination of the positioning plate 1, the drilling guide sleeve 2, the first limiting bolt 3, the positioning bushing 4, the second limiting bolt 5 and the central positioning sleeve 6, can ensure the positioning precision and the drilling precision of punching, reduces the steps of dismantling the base, the gear box and a plurality of related parts on the periphery, does not need to be matched by a plurality of people, saves time and labor, and has high repair efficiency.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (8)
1. Repair positioning tool for alignment screw holes of engine gear box blanking cover is characterized in that:
the positioning device comprises a positioning plate, a drilling guide sleeve arranged on the positioning plate, a first limit bolt matched with the drilling guide sleeve, a positioning bushing, a second limit bolt matched with the positioning bushing and a center positioning sleeve;
the center of the positioning plate is provided with a center positioning hole corresponding to the center positioning sleeve;
a guide sleeve mounting hole and a bushing mounting hole are symmetrically formed in the positioning plate and located on two sides of the central positioning hole; the guide sleeve mounting hole corresponds to the drilling guide sleeve, and the bushing mounting hole corresponds to the positioning bushing;
a first limit bolt mounting hole and a second limit bolt mounting hole are formed in the locating plate and are positioned on two sides of the central locating hole, the first limit bolt mounting hole is positioned on one side close to the guide sleeve mounting hole, the second limit bolt mounting hole is positioned on one side close to the bushing mounting hole, the first limit bolt mounting hole corresponds to the first limit bolt, and the second limit bolt mounting hole corresponds to the second limit bolt;
a guide hole is formed in the axial direction of the drilling guide sleeve; the outer wall of the drilling guide sleeve is provided with a first locking notch which is matched with the first limit bolt;
a guide hole is formed in the axial direction of the positioning bushing; the outer wall of the positioning bushing is provided with a second locking notch which is matched with the second limit bolt.
2. The repair positioning tool for the alignment screw hole of the engine gearbox blanking cover of claim 1, wherein the repair positioning tool is characterized in that: the drilling guide sleeve comprises a primary guide sleeve round table and a secondary guide sleeve round table with different outer diameters, the outer diameter of the primary guide sleeve round table is matched with the guide sleeve mounting hole, and the outer diameter of the secondary guide sleeve round table is larger than the guide sleeve mounting hole.
3. The repair positioning tool for the alignment screw hole of the engine gearbox blanking cover of claim 2, wherein the repair positioning tool is characterized in that: the positioning bushing comprises a primary bushing circular table and a secondary bushing circular table, wherein the primary bushing circular table and the secondary bushing circular table are different in outer diameter, the outer diameter of the primary bushing circular table is matched with the bushing mounting hole, and the outer diameter of the secondary bushing circular table is larger than the bushing mounting hole.
4. The repair positioning tool for the alignment screw hole of the engine gearbox blanking cover of claim 3, wherein the repair positioning tool is characterized in that: the first locking notch is formed in the outer wall of the second-stage guide sleeve round table of the drilling guide sleeve, and the first limit bolt is interfered to the outer wall of the second-stage guide sleeve round table on the drilling guide sleeve.
5. The repair positioning tool for the alignment screw hole of the engine gearbox blanking cover of claim 4, wherein the repair positioning tool is characterized in that: the second locking notch is formed in the outer wall of the second-stage bushing circular table of the positioning bushing, and the second limiting bolt is interfered to the outer wall of the second-stage bushing circular table of the positioning bushing.
6. The repair positioning tool for the alignment screw hole of the engine gearbox blanking cover of claim 5, wherein the repair positioning tool is characterized in that: the first limit bolt is provided with external threads and is matched with the internal threads of the first limit bolt mounting hole, and an inner hexagonal wrench jack is formed in the top surface of the first limit bolt.
7. The repair positioning tool for the alignment screw hole of the engine gearbox blanking cover of claim 5, wherein the repair positioning tool is characterized in that: the second limit bolt is provided with external threads matched with internal threads of the second limit bolt mounting hole, and an inner hexagonal wrench jack is formed in the top surface of the second limit bolt.
8. The repair positioning tool for the alignment screw hole of the engine gearbox blanking cover of claim 5, wherein the repair positioning tool is characterized in that: the outer diameter of the center locating sleeve is matched with the center locating hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320134549.4U CN219443562U (en) | 2023-01-19 | 2023-01-19 | Repair positioning tool for alignment screw hole of engine gear box blanking cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320134549.4U CN219443562U (en) | 2023-01-19 | 2023-01-19 | Repair positioning tool for alignment screw hole of engine gear box blanking cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219443562U true CN219443562U (en) | 2023-08-01 |
Family
ID=87423209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320134549.4U Active CN219443562U (en) | 2023-01-19 | 2023-01-19 | Repair positioning tool for alignment screw hole of engine gear box blanking cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219443562U (en) |
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2023
- 2023-01-19 CN CN202320134549.4U patent/CN219443562U/en active Active
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