CN220880643U - Countersunk air drill - Google Patents

Abstract

The utility model discloses a countersunk air drill, comprising: an air drill; the output end of the pneumatic drill is connected with a depth setting device, a rotating shaft is arranged at the inner side of the depth setting device, and the rotating shaft is driven to rotate by the pneumatic drill; the rotating shaft penetrates through the depth setting device and extends outwards, the elastic component is arranged on the inner side of the depth setting device, the ring sleeve is arranged on the outer side of the rotating shaft, and the rotating shaft is reset through the elastic component, so that the rotating shaft reciprocates along the axis direction of the depth setting device; the device designs the afterbody of depth setting device and has rotation portion, passes through threaded connection with the pneumatic drill, for the face contact, increases the cooperation precision, and screw thread locking revolves to opposite with pneumatic drill rotation direction, reduces the error.

Description

Countersunk air drill

Technical Field

The utility model relates to the technical field of aerospace instruments, in particular to a countersunk air drill.

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.

When installing the processing tool bit, need now twist the tool bit on the depth setting cover, be equipped with the pivot at the opposite side of depth setting cover, insert the three-jaw jack catch in air drill the place ahead with the pivot on, rotatory jack catch and pivot in line contact cooperation lock again, when carrying out counter bore countersink, because demountable installation's structure is more, when countersink arrives the assigned position, because inertial action for between air drill and the depth setting cover, radial run-out in the tolerance can take place between depth setting cover and the tool bit, the accumulation of error makes the further increase of machining error, consequently, a succinct air drill countersink structure is needed to be urgently reduced, the procedure that needs the installation depth setting cover.

Disclosure of utility model

The utility model aims to solve the defects in the prior art and provides a countersink drill.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a countersink, comprising:

An air drill;

The output end of the pneumatic drill is connected with a depth setting device, a rotating shaft is arranged at the inner side of the depth setting device, and the rotating shaft is driven to rotate by the pneumatic drill;

The rotating shaft penetrates through the depth setting device and extends outwards, the elastic component is arranged on the inner side of the depth setting device, the annular sleeve is arranged on the outer side of the rotating shaft, and the rotating shaft is reset through the elastic component, so that the rotating shaft moves back and forth along the axis direction of the depth setting device.

As a further description of the above technical solution: the depth setting device comprises a positioning part and a rotating part, wherein the positioning part comprises a supporting ring, one side of the supporting ring is integrally provided with supporting plates, and the number of the supporting plates is at least two.

As a further description of the above technical solution: the support plate is integrally connected with the first shell, and one side of the first shell is provided with a second shell which is matched with the first shell in a staggered mode through tooth shapes.

As a further description of the above technical solution: the first shell body and the inner side of the second shell body are provided with a barrel body, threads are arranged on the outer side of the barrel body, the first shell body is in threaded fit with the barrel body, the second shell body is in clearance fit with the barrel body, one side of the second shell body is provided with a locking ring, and the locking ring is in threaded fit with the barrel body.

As a further description of the above technical solution: a first bearing is arranged on the inner side of the cylinder body, a first limiting plate is arranged on one side of the first bearing, and the first limiting plate is connected with the elastic component;

The other side of the elastic component is provided with a second limiting plate, one side of the second limiting plate is provided with a second bearing, and the rotating shaft penetrates through the first bearing, the first limiting plate, the second limiting plate and the second bearing.

As a further description of the above technical solution: the rotating shaft is divided into an extending section and a limiting section, the limiting section is arranged along the radial direction of the extending section, and the limiting section is attached to the second bearing.

As a further description of the above technical solution: the output end of the rotating shaft is provided with a threaded opening, and the threaded opening is positioned on one side close to the supporting ring and is connected with the cutter head.

As a further description of the above technical solution: the limiting section of the rotating shaft is provided with a notch, one side of the rotating part stretches into the first shell and is matched with the notch to drive the rotating shaft to rotate.

As a further description of the above technical solution: the other side of the rotating part is provided with an internal thread, the inner side of the pneumatic drill is provided with a pneumatic motor, an output shaft of the pneumatic motor is provided with an external thread, and the rotating part and the pneumatic drill are locked through thread engagement.

As a further description of the above technical solution: and a nylon ring is arranged on the other side of the supporting ring.

The technical scheme has the following advantages or beneficial effects:

1. The tail part of the depth setting device is provided with a rotating part which is in threaded connection with the pneumatic drill, so that the matching precision is increased, the rotation direction of the thread locking is opposite to the rotation direction of the pneumatic drill, and the error is reduced.

Drawings

FIG. 1 is a perspective view of a countersunk head according to the present utility model;

FIG. 2 is an elevation view of a countersink of the present utility model;

FIG. 3 is a side view of a countersink according to the present utility model;

FIG. 4 is a cross-sectional view of a countersunk head according to the present utility model;

fig. 5 is a partial enlarged view of fig. 4.

Legend description:

1. An air drill; 2. a rotating shaft; 3. an elastic component; 4. a positioning part; 41. a support ring; 42. a support plate; 43. a first housing; 44. nylon rings; 45. a second housing; 46. a cylinder; 47. a locking ring; 5. a rotating part; 6. a first bearing; 7. a first limiting plate; 8. a second limiting plate; 9. a second bearing; 10. and (5) a threaded opening.

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. 1-5, one embodiment provided by the present utility model is: a countersink, comprising: an air drill 1; the output end of the air drill 1 is connected with a depth setting device, the inner side of the depth setting device is provided with a rotating shaft 2, and the rotating shaft 2 is driven to rotate by the air drill 1; the rotating shaft 2 penetrates through the depth setting device and extends outwards, the elastic component 3 is arranged on the inner side of the depth setting device, the annular sleeve is arranged on the outer side of the rotating shaft 2, and the rotating shaft 2 is reset through the elastic component 3 to reciprocate along the axis direction of the depth setting device.

In this embodiment, the air drill 1 drives the depth setting device to rotate, under the stress state, the air drill 1 pushes the rotating shaft 2 to move in the axial direction of the depth setting device, at this time, the elastic component 3 is pressed by stress and deformed, after the countersink is finished, the air drill 1 is not stressed, and the elastic component 3 resets.

The depth setting device comprises a positioning part 4 and a rotating part 5, wherein the positioning part 4 comprises a supporting ring 41, one side of the supporting ring 41 is integrally provided with supporting plates 42, and the number of the supporting plates 42 is at least two.

In this embodiment, the positioning portion 4 and the rotating portion 5 may rotate relatively, the supporting ring 41 contacts with the profile, and the nylon ring 44 is disposed on the other side of the supporting ring 41, so as to prevent the indentation from being formed on the surface of the carbon fiber composite workpiece due to artificial downward pressure in the countersinking process, the number of the supporting plates 42 is preferably two, and gaps exist between the supporting plates 42, so that screwing or dismounting of the tool bit is facilitated.

The support plate 42 is integrally connected with the first casing 43, one side of the first casing 43 is provided with a second casing 45 which is in staggered fit with the first casing 43 through a tooth form, and when locking is performed, the first casing 43 and the second casing 45 are in staggered fit through a tooth form to perform positioning.

The inner sides of the first shell 43 and the second shell 45 are provided with a cylinder 46, threads are arranged on the outer sides of the cylinder 46, the first shell 43 is in clearance fit with the cylinder 46 through threads, one side of the second shell 45 is provided with a locking ring 47, the locking ring 47 is in threaded fit with the cylinder 46, when the depth of a fixed depth sleeve is adjusted, the locking ring 47 at the rear is unscrewed by rotating first, the second shell 45 is far away from the second shell 45, then the second shell 45 moves towards the locking ring 47 to be separated from the tooth-shaped staggered fit of the first shell 43, at the moment, the first shell 43 can be rotated, the position of a threaded opening 10 away from a nylon ring 44 is adjusted, then the second shell 45 is clamped with the first shell 43, and the locking ring 47 at the rear of rotation further extrudes the second shell 45 and the first shell 43, so that the fit is tighter, and the depth adjustment of the fixed depth sleeve threaded opening is realized.

The rotating shaft 2 is divided into an extending section and a limiting section, the limiting section is arranged along the radial direction of the extending section, and the limiting section is attached to the second bearing 9, so that the rotating shaft 2 can be prevented from falling off.

The output end of the rotating shaft 2 is provided with a threaded opening 10, the threaded opening 10 is positioned on one side close to the supporting ring 41 and is connected with the tool bit, when the pneumatic drill 1 is pressed down, the rotating shaft 2 moves downwards to gradually push the tool bit out of the supporting ring 41, and countersink is carried out on the basis of a lower section bottom hole.

The cylinder 46 is provided with a first bearing 6 on the inner side, a first limiting plate 7 is arranged on one side of the first bearing 6, the first limiting plate 7 can rotate relative to the inner side of the cylinder 46, the first limiting plate 7 is connected with the elastic component 3, a second limiting plate 8 is arranged on the other side of the elastic component 3, a second bearing 9 is arranged on one side of the second limiting plate 8, the second bearing 9 is attached to a limiting section of the rotating shaft 2, the rotating shaft 2 can rotate relative to the first shell 42, the second limiting plate 8 extrudes the elastic component 3 to move towards the first limiting plate 7 when countersinking, in the embodiment, the elastic component 3 is a spring, and the rotating shaft 2 penetrates through the first bearing 6, the first limiting plate 7, the second limiting plate 8 and the second bearing 9 and extends to the supporting plate 42.

Specifically, the limiting section of the rotating shaft 2 is provided with a notch, and one side of the rotating part 5 extends into the cylinder 46 and is matched with the notch to drive the rotating shaft 2 to rotate.

In this embodiment, the annular notch can be formed in the curved surface of the limiting section of the rotating shaft 2, the rotating part 5 is provided with a clamping block matched with the annular notch, and the clamping block protrudes inwards to prevent the rotating shaft 2 from slipping.

In another embodiment, a plurality of notches are formed at the end face of the limiting section of the rotating shaft 2, and a corresponding plug-in connector is arranged at one side of the rotating part 5, so that the rotating shaft 2 can be rotated.

The internal thread has been seted up to the opposite side of rotation portion 5, and pneumatic motor has been seted up to pneumatic motor's inboard, and pneumatic motor's output shaft has seted up the external screw thread, and rotation portion 5 passes through threaded engagement locking with pneumatic drill 1, passes through threaded connection with pneumatic drill 1, for the face contact, increases the cooperation precision, and the screw locking revolves to opposite with pneumatic drill 1 rotation direction, reduces the error.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. A countersink, comprising:

An air drill (1);

The output end of the air drill (1) is connected with a depth setting device, a rotating shaft (2) is arranged on the inner side of the depth setting device, and the rotating shaft (2) is driven to rotate by the air drill (1);

The rotating shaft (2) penetrates through the depth setting device and extends outwards, the elastic component (3) is arranged on the inner side of the depth setting device, the ring sleeve is arranged on the outer side of the rotating shaft (2), and the rotating shaft (2) is reset through the elastic component (3) to reciprocate along the axis direction of the depth setting device;

The depth setting device comprises a positioning part (4) and a rotating part (5), wherein the positioning part (4) comprises a support ring (41), one side of the support ring (41) is integrally provided with support plates (42), and the number of the support plates (42) is at least two;

The support plate (42) is integrally connected with the first shell (43), and a second shell (45) is arranged on one side of the first shell (43) and is in staggered fit with the first shell (43) through tooth shapes.

2. A countersunk head according to claim 1, wherein: the novel anti-theft device is characterized in that a cylinder body (46) is arranged on the inner side of the first shell (43) and the inner side of the second shell (45), threads are formed on the outer side of the cylinder body (46), the first shell (43) is in threaded fit with the cylinder body (46), the second shell (45) is in clearance fit with the cylinder body (46), a locking ring (47) is arranged on one side of the second shell (45), and the locking ring (47) is in threaded fit with the cylinder body (46).

3. A countersunk head according to claim 2, wherein: a first bearing (6) is arranged on the inner side of the cylinder body (46), a first limiting plate (7) is arranged on one side of the first bearing (6), and the first limiting plate (7) is connected with the elastic component (3);

The other side of the elastic component (3) is provided with a second limiting plate (8), one side of the second limiting plate (8) is provided with a second bearing (9), and the rotating shaft (2) penetrates through the first bearing (6), the first limiting plate (7), the second limiting plate (8) and the second bearing (9).

4. A countersunk head according to claim 3, wherein: the rotating shaft (2) is divided into an extending section and a limiting section, the limiting section is arranged along the radial direction of the extending section, and the limiting section is attached to the second bearing (9).

5. A countersunk head according to claim 1, wherein: the output end of the rotating shaft (2) is provided with a threaded opening (10), and the threaded opening (10) is positioned at one side close to the supporting ring (41) and is connected with the cutter head.

6. A countersunk head according to claim 1, wherein: the limiting section of the rotating shaft (2) is provided with a notch, one side of the rotating part (5) stretches into the first shell (43) and is matched with the notch to drive the rotating shaft (2) to rotate.

7. A countersunk head according to claim 1, wherein: the other side of the rotating part (5) is provided with an internal thread, the inner side of the pneumatic drill (1) is provided with a pneumatic motor, an output shaft of the pneumatic motor is provided with an external thread, and the rotating part (5) is locked with the pneumatic drill (1) through thread engagement.

8. A countersunk head according to claim 1, wherein: the other side of the supporting ring (41) is provided with a nylon ring (44).