CN222890597U - Limiting depth-fixing sleeve for countersink - Google Patents
Limiting depth-fixing sleeve for countersink Download PDFInfo
- Publication number
- CN222890597U CN222890597U CN202421385666.9U CN202421385666U CN222890597U CN 222890597 U CN222890597 U CN 222890597U CN 202421385666 U CN202421385666 U CN 202421385666U CN 222890597 U CN222890597 U CN 222890597U
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- sleeve
- main shaft
- protective shell
- spring
- depth
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Abstract
The utility model discloses a countersink limiting depth-fixing sleeve which comprises a sleeve, wherein a main shaft which moves back and forth along the axial direction is arranged on the inner side of the sleeve, one side of the main shaft is connected with a driving assembly to drive the main shaft to rotate, a limiting assembly is arranged on the outer side of the main shaft in a sleeved mode to limit the main shaft when the main shaft moves and resets, and the limiting assembly is arranged on the outer side of the main shaft, one end of the main shaft is designed to be a stepped rotating shaft, a spring and a bearing on the inner side of the sleeve are limited, and the supporting strength of the depth-fixing sleeve is enhanced while the reciprocating movement between the main shaft and the sleeve is not influenced.
Description
Technical Field
The utility model relates to the technical field of aerospace instruments, in particular to a countersink limiting and depth-fixing sleeve.
Background
In the aircraft assembly process, the skin shell needs to be kept smooth as much as possible without any bulge, so a large number of fasteners with countersunk heads are used, a large number of countersunk holes need to be drilled in the skin, the existing machining process can drill holes firstly in the aircraft assembly process, and then the countersunk holes are machined by the depth fixing sleeves respectively.
The nest depth limiting is carried out on the inner side of the depth fixing sleeve mainly by means of an internal spring and a clamping ring (generally in a concentric circular plate shape) above the spring, but in the nest drilling process of the skin, the main shaft of the depth fixing sleeve is subjected to continuous downward pressure to be large, limiting can be realized after the internal spring is compressed to an elastic limit, at the moment, the clamping ring is subjected to the elastic force of the spring and the downward pressure of the main shaft, fatigue damage is easy to occur, after the clamping ring is damaged, the spring can elastically reset upwards, and a limiting structure is absent between the clamping ring and the main shaft, so that the main shaft cannot be limited through the clamping ring in the pressing process.
Disclosure of utility model
The utility model aims to solve the defects in the prior art and provides a countersink limiting and depth-fixing sleeve.
In order to achieve the purpose, the utility model adopts the following technical scheme that the countersink limiting and depth fixing sleeve comprises the following components:
a sleeve;
a main shaft which moves reciprocally along the axial direction is arranged on the inner side of the sleeve;
one side of the main shaft is connected with a driving assembly to drive the main shaft to rotate;
the outside ring cover of main shaft is provided with spacing subassembly, carries out spacingly when carrying out the removal to the main shaft and resets.
As a further description of the technical scheme, a first protective shell and a second protective shell are arranged on the outer side of the sleeve, the second protective shell is connected to the sleeve through threads, and the first protective shell and the second protective shell are abutted.
As a further description of the above technical solution, the limiting assembly includes a first spring and a second spring, and a volume cavity is formed between the first protective shell and the sleeve, so that the first spring is placed inside the volume cavity.
As a further description of the above technical solution, a first locking ring is provided on one side of the first protective shell, and the first locking ring is screwed with the sleeve.
According to the technical scheme, a pin hole is formed in one side, close to the driving assembly, of the main shaft, a second locking ring is arranged on the outer side of the main shaft, and the second locking ring is matched with the main shaft through a pin shaft and the pin hole to limit the second spring.
As further description of the technical scheme, the outer side ring of the main shaft is provided with two bearings, and the second spring is sleeved on the outer side of the main shaft and is positioned between the two bearings.
As a further description of the above technical solution, a gap exists between the sleeve and the first protective shell, and the first spring collar is arranged outside the sleeve.
As a further description of the technical scheme, the end face between the first protective shell and the second protective shell is provided with a tooth shape, so that the first protective shell and the second protective shell are meshed.
As further description of the technical scheme, the end face of one side of the main shaft is provided with a threaded notch for installing the countersink drill, one end, close to the threaded notch, of the main shaft is a stepped shaft, and the stepped shaft is matched with the end face of one side of the sleeve to limit.
As a further description of the technical scheme, a gasket is arranged on one side of the second protective shell.
The technical scheme has the following advantages or beneficial effects:
1. through set up spacing subassembly in the outside of main shaft to design into ladder-shaped pivot to main shaft one end, spacing is carried out to the inboard spring of sleeve and bearing, does not influence and carries out reciprocating motion between main shaft and the sleeve, reinforcing depthkeeping cover's support strength.
Drawings
FIG. 1 is a schematic diagram of a depth jacket according to the present utility model;
FIG. 2 is a physical diagram of the depth sleeve according to the present utility model;
FIG. 3 is a diagram comparing a conventional depth jacket structure with the depth jacket of the present application.
Legend description:
1. A sleeve; 2, a main shaft, 3, a first protective shell, 4, a second protective shell, 5, a first spring, 6, a second spring, 7, a first locking ring, 8, a pin hole, 9, a pin shaft, 10, a second locking ring, 11, a bearing, 12, a thread notch, 13, a gasket, 14 and a limiting shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the countersink limiting and depth fixing sleeve comprises a sleeve 1, wherein a main shaft 2 which moves reciprocally along the axial direction is arranged on the inner side of the sleeve 1, one side of the main shaft 2 is connected with a driving assembly to drive the main shaft 2 to rotate, and a limiting assembly is arranged on the outer side of the main shaft 2 in a sleeved mode to limit the main shaft 2 when the main shaft 2 moves and resets.
In this embodiment, the drive assembly is pneumatic or electronic brill rifle, be connected with main shaft 2 through the chuck, drive main shaft 2 and rotate, carry out the nest to the aircraft skin, be provided with spacing subassembly in the outside of main shaft 2, in the in-process of pushing down the main shaft and carrying out the nest, the distance that makes main shaft 2 stretch into to sleeve 1 inboard is spacing, prevent main shaft 2 feed distance too big, damage aircraft skin, through set up spacing subassembly in the outside of main shaft 2, and design into the ladder-shaped pivot to main shaft 2 one end, spacing subassembly to sleeve 1 inboard carries out spacingly, when not influencing and carry out reciprocating motion between main shaft 2 and the sleeve 1, strengthen the support strength of depth fixing cover.
The outside of sleeve 1 is provided with first protective housing 3 and second protective housing 4, and second protective housing 4 passes through threaded connection in sleeve 1 department, and first protective housing 3 and second protective housing 4 looks butt, and the terminal surface between first protective housing 3 and the second protective housing 4 sets up to the profile of tooth, makes between first protective housing 3 and the second protective housing 4 mesh.
In this embodiment, the first protective shell 3 is sleeved on the sleeve 1, the second protective shell 4 is connected to the sleeve 1 through threads, the depth of the sleeve 1 extending into the inner sides of the first protective shell 3 and the second protective shell 4 is adjusted by rotating the adjusting sleeve, the depth of the countersink is adjusted, the first protective shell 3 is abutted against the second protective shell 4, the end face is tooth-shaped, and relative rotation is prevented after threaded connection.
The first protective shell 3 is provided with a through hole, a limiting shaft 14 is arranged between the first protective shell 3 and the sleeve 1, the sleeve 1 is provided with a sliding groove, one side of the limiting shaft 14 is matched with the through hole, and the other side of the limiting shaft extends into the sliding groove and is used for limiting the sleeve 1 to rotate.
One side of the first protective shell 3 is provided with a first locking ring 7, the first locking ring 7 is in threaded connection with the sleeve 1, and after rotating and screwing, a certain force is applied to one side of the first protective shell 3, so that the first protective shell and the second protective shell 4 are in limit locking.
The limiting assembly comprises a first spring 5 and a second spring 6, a volume cavity is formed between the first protective shell 3 and the sleeve 1, and the first spring 5 is placed inside the volume cavity.
In this embodiment, the first spring 5 is located between the first protective shell 3 and the second protective shell 4, there is a gap between the sleeve 1 and the first protective shell 3, the first spring 5 is looped around the outside of the sleeve 1, and one end contacts with the limiting shaft 14, when the first protective shell 3 is abutted against the second protective shell 4, the first spring 5 is in a compressed state, when the first protective shell 3 is provided with the first locking ring 7 on one side, the thrust of the spring is applied to one side of the second protective shell 4 to lock the second protective shell 4, meanwhile, when the socket depth of the sleeve 1 is adjusted, the first protective shell 3 and the second protective shell 4 are separated conveniently after the first locking ring 7 is released by rotation, the position of the second protective shell 4 at the sleeve 1 is adjusted by rotation, and the socket depth is adjusted.
The screw notch 12 is offered to the terminal surface of one side of main shaft 2 for install the countersink drill, the one end that main shaft 2 is close to screw notch 12 is the step shaft, cooperates with sleeve 1 one side terminal surface and carries out spacing, makes the one end of main shaft 2 stretch out the outside of sleeve 1 and carries out spacing.
The main shaft 2 is close to one side of drive assembly and sets up pinhole 8, is provided with second locking ring 10 in the side that main shaft 2 kept away from screw notch 12, and the ring cover sets up in the outside of main shaft 2, and the outside of main shaft 2 sets up to the linkage segment of rectangle, and the inboard of second locking ring 10 is the rectangular hole with main shaft 2 linkage segment looks adaptation, and the external diameter of second locking ring 10 is less than the internal diameter of sleeve 1, can realize that main shaft 2 and second locking ring 10 stretch into the inboard of sleeve 1, carries out reciprocating motion, carries out the countersink to the aircraft skin. The second locking ring 10 is matched with the main shaft 2 through the pin shaft 9 and the pin hole 8 to limit the second spring 6.
The outside ring cover of main shaft 2 is provided with two bearings 11, and the second spring 6 cover is established in the outside of main shaft 2, and is located between two bearings 11, and when rotating, the connecting section on second locking ring 10 and the main shaft 2 carries out spacingly to the bearing of top, and the bearing of below is with at the sleeve inboard, carries out spacingly through sleeve 1, is carrying out the in-process of countersink, extrudees second spring 10, and is further, is provided with the baffle between second spring 10 and bearing 11, protects the bearing, and the bearing that is close to drive assembly one side is ball bearing, and the bearing that is close to one side of screw notch 12 is needle bearing.
One side of the second protective housing 4 is provided with a gasket 13 which is in contact with the aircraft skin and prevents the aircraft skin from being damaged when being pressed down in the process of countersinking, and the gasket is made of nylon or steel.
It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421385666.9U CN222890597U (en) | 2024-06-17 | 2024-06-17 | Limiting depth-fixing sleeve for countersink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421385666.9U CN222890597U (en) | 2024-06-17 | 2024-06-17 | Limiting depth-fixing sleeve for countersink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222890597U true CN222890597U (en) | 2025-05-23 |
Family
ID=95724471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421385666.9U Active CN222890597U (en) | 2024-06-17 | 2024-06-17 | Limiting depth-fixing sleeve for countersink |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222890597U (en) |
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2024
- 2024-06-17 CN CN202421385666.9U patent/CN222890597U/en active Active
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