CN220837973U - Self-centering tool bit for flat end rotation of catheter - Google Patents

Abstract

The utility model discloses a self-centering tool bit for rotating a flat end of a guide pipe, which relates to the technical field of machining of aviation guide pipes and comprises an inner circular blade, an end surface blade, an outer circular blade, a cutter head, a rotating disc, three blade centering guide structures and a cutter handle fixedly connected with the cutter head; the rotary disk is an annular structure coaxially sleeved on the cutter handle, is attached to the back surface of the cutter head, can rotate by taking the cutter handle as a rotation center, and three blade centering guide structures are uniformly distributed around the cutter handle in the annular direction; the blade centering guide structure comprises a moving part, and the moving part, the cutter head and the rotating disc can be relatively locked; the inner circular blade, the end surface blade and the outer circular blade are respectively detachably arranged on moving parts of the three blade centering guide structures; when the rotary disk is rotated, the three blades can move towards the direction close to or far from the central axis of the cutterhead at the same time for centering the moving part of the guide structure. The utility model can rapidly and accurately position three blades and improve the working efficiency.

Description

Self-centering tool bit for flat end rotation of catheter

Technical Field

The utility model relates to the technical field of aviation conduit machining, in particular to a conduit flat-end rotating self-centering tool bit.

Background

Because the structure of the aviation conduit is hollow and circular, the end processing of the aviation conduit generally requires three parts to be processed: firstly, processing the outer circle of a catheter; secondly, processing the inner circle of the guide pipe; thirdly, processing the end face of the guide pipe. Because the difference of the processing parts is large, three blades are needed for processing the end heads, and the inner circle, the outer circle and the end face of the guide pipe are processed at the same time.

For the flat end rotary tool bit of the guide pipe, the three blades are respectively installed and respectively adjusted to the corresponding machining parts of the guide pipe, and then the fixing screws of the blades are locked when the blades are adjusted to the proper positions. However, this structure requires a lot of experience from the operator in adjusting the position of the blade. The small catheter has a narrow operation space of the tip, which is not beneficial to the installation and positioning of the blade. Before the end of the catheter is processed, the distance position is confirmed by adjusting the fastening screw of each cutter, so that the efficiency is low and the time is wasted.

Disclosure of utility model

The utility model aims to provide a self-centering tool bit for rotating a flat end of a catheter, which can solve the problems.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

The utility model provides a pipe flat end rotation self-centering tool bit, includes interior circle blade, terminal surface blade, excircle blade, blade disc, rotary disk, three blade centering guide structure and with the handle of a knife of blade fixed connection of blade disc;

The rotary disc is an annular structure coaxially sleeved on the cutter handle, is attached to the back surface of the cutter head, can rotate by taking the cutter handle as a rotation center, and the three blade centering guide structures are uniformly distributed around the cutter handle in an annular direction;

The blade centering guide structure comprises a moving part, and the moving part, the cutter head and the rotating disc can be relatively locked; the inner circular blade, the end surface blade and the outer circular blade are respectively detachably arranged on the moving parts of the three blade centering guide structures;

When the rotary disk is rotated, the moving parts of the three blade centering guide structures can simultaneously move towards the direction close to or far from the central axis of the cutter head.

In a preferred embodiment of the present utility model, the blade centering and guiding structure includes a sliding groove, a sliding block slidably mounted on the sliding groove and serving as the moving member, a straight kidney-shaped hole formed at the bottom of the sliding groove and penetrating the rotating disc, an adjusting column fixedly connected to the sliding block and penetrating the straight kidney-shaped hole, and a lock nut screwed to the adjusting column and located at the back side of the rotating disc; the sliding groove consists of a notch formed in the cutter disc and the front face of the rotary disc; the three sliding grooves can be intersected with the central axis of the cutterhead after being prolonged; when the rotating disc is rotated, the adjusting column can move along the waist length direction of the straight waist-shaped hole, the sliding block can slide along the sliding groove, and the sliding block can be fixed in the sliding groove without sliding any more through the adjustment of the locking nut and the threads of the adjusting column.

In a preferred embodiment of the present utility model, the front surface of the cutterhead is provided with a protruding portion for deepening the chute on both sides of the notch.

In a preferred embodiment of the utility model, the protruding portion is provided with a slider fixing auxiliary screw hole which is opened transversely to the chute.

In a preferred embodiment of the present utility model, the waist length of two adjacent straight waist-shaped holes forms an included angle of 60 °, and the included angle of two adjacent sliding grooves is 120 °.

Compared with the prior art, the utility model has the beneficial effects that:

After the initial positions of the three blades (namely the inner circular blade and the end surface blade and the two outer circular blades) are determined, the three blades can synchronously advance and retreat by rotating the rotating disc, and then the positions of the cutters are locked, so that the positions of the three blades can be rapidly and accurately positioned, and the working efficiency is improved.

In order to make the above objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first perspective view of a catheter flat end rotating self-centering bit according to the present utility model;

FIG. 2 is a second view block diagram of a catheter flat end rotating self-centering bit according to the present utility model;

FIG. 3 is a block diagram of the assembly of the tool shank, rotary disc and cutterhead of the present utility model;

FIG. 4 is a block diagram of the assembly of the tool shank and the tool head of the present utility model;

FIG. 5 is a block diagram of a rotary disk according to the present utility model;

in the figure: 1. a knife handle; 2. a rotating disc; 3. a slide block; 4. an inner circular blade; 5. a chute; 6. an end face blade; 7. an outer circular blade; 8. the sliding block is fixed with an auxiliary screw hole; 9. a cutterhead; 10. an adjusting column; 11. a lock nut; 12. a straight kidney-shaped hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.

Referring to fig. 1 to 5, the present embodiment provides a self-centering tool bit for flat end rotation of a catheter, which includes an inner circular blade 4, an end surface blade 6, an outer circular blade 7, a cutter 9, a rotating disc 2, three blade centering guide structures, and a tool shank 1 fixedly connected with the cutter 9.

The rotary disk 2 is an annular structure coaxially sleeved on the cutter handle 1, is attached to the back surface of the cutter head 9, can rotate by taking the cutter handle 1 as a rotation center, and is uniformly arranged around the cutter handle 1 in an annular direction.

The blade centering and guiding structure comprises a sliding groove 5, a sliding block 3 which is assembled on the sliding groove 5 in a sliding way, a straight waist-shaped hole 12 which is arranged at the bottom of the sliding groove 5 and penetrates through the rotating disk 2, an adjusting column 10 which is fixedly connected with the sliding block 3 and penetrates through the straight waist-shaped hole 12, and a locking nut 11 which is connected with the adjusting column 10 in a threaded way and is positioned on the back side of the rotating disk 2; the chute 5 consists of a notch formed in the cutter head 9 and the front surface of the rotary disk 2; the three sliding grooves 5 can be intersected with the central axis of the cutter head 9 after being prolonged; when the rotary disk 2 is rotated, the adjusting column 10 can be moved along the waist length direction of the straight waist-shaped hole 12, the sliding block 3 can slide along the sliding groove 5, and the sliding block 3 can be fixed in the sliding groove 5 without sliding any more through the locking nut 11 and the screw thread adjustment of the adjusting column 10.

The inner circular blade 4, the end surface blade 6 and the outer circular blade 7 are respectively and detachably arranged on the sliding block 3 of the three blade centering guide structures, in order to prevent the blades from being displaced due to stress in the processing process, fixing auxiliary screw holes are additionally formed in the side surfaces of the sliding block 3, and when the inner circular blade 4, the end surface blade 6 and the outer circular blade 7 are respectively arranged in the cutter grooves of the sliding block 3 of the middle guide structure, the blades are fixed through countersunk head screws for locking the measuring surfaces of the sliding block 3.

In order to enable the sliding block 3 to slide in the sliding groove 5 more smoothly, the front surface of the cutter disc 9 is provided with protruding parts for deepening the sliding groove 5 at two sides of the notch, as shown in fig. 4. For different guide pipes, the hardness of the materials may be different, for the guide pipe with higher hardness, the required force for processing is larger, and in order to improve the stability of the sliding block 3 after being locked in the sliding groove 5, a sliding block fixing auxiliary screw hole 8 which transversely leads to the sliding groove 5 is arranged at the protruding part, as shown in fig. 3.

In the embodiment, the arrangement of the straight kidney-shaped holes 12 and the sliding grooves 5 is designed, wherein the waist length of two adjacent straight kidney-shaped holes 12 forms an included angle of 60 degrees, and the included angle of two adjacent sliding grooves 5 is 120 degrees.

In the embodiment, when the rotary disk 2 rotates, the straight kidney-shaped hole 12 of the rotary disk 2 drives the adjusting posts 10 of the three blade centering and guiding structures to move simultaneously, and the sliding blocks 3 of the three blade centering and guiding structures move along the respective sliding grooves 5 to a direction approaching to or separating from the central axis of the cutterhead 9.

Therefore, after the blades are positioned on the sliding blocks 3 according to different specifications of the processed guide pipes, the inner circular blade 4, the outer circular blade 7 and the end surface blade 6 can be simultaneously driven to move towards the direction close to or far away from the central axis of the cutter head 9 by rotating the rotating disc 2, after the blades move in place, the blades, the sliding blocks 3, the cutter head 9 and the rotating disc 2 are relatively locked through the screw thread adjustment of the locking nut 11 and the adjusting column 10, and at the moment, the end of the guide pipe can be processed by using three blades.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a pipe flat end rotation self-centering tool bit, includes interior circle blade (4), terminal surface blade (6), excircle blade (7), blade disc (9) and with blade disc (9) fixed connection's handle of a knife (1), its characterized in that still includes rotary disk (2) and three blade centering guide structure;

the rotary disc (2) is of an annular structure coaxially sleeved on the cutter handle (1), is attached to the back surface of the cutter head (9), can rotate by taking the cutter handle (1) as a rotation center, and is uniformly arranged in a circumferential direction around the cutter handle (1) by three blade centering guide structures;

The blade centering guide structure comprises a moving part, and the moving part, the cutter head (9) and the rotating disc (2) can be relatively locked; the inner circular blade (4), the end surface blade (6) and the outer circular blade (7) are respectively detachably arranged on moving parts of the three blade centering guide structures;

When the rotary disk (2) is rotated, the three moving parts of the blade centering guide structure can simultaneously move towards the direction approaching to or away from the central axis of the cutter head (9).

2. The catheter flat end rotating self-centering tool bit according to claim 1, wherein the blade centering guide structure comprises a sliding groove (5), a sliding block (3) which is slidably assembled in the sliding groove (5) and serves as the moving part, a straight waist-shaped hole (12) which is formed at the bottom of the sliding groove (5) and penetrates through the rotating disc (2), an adjusting column (10) which is fixedly connected with the sliding block (3) and penetrates through the straight waist-shaped hole (12), and a locking nut (11) which is in threaded connection with the adjusting column (10) and is positioned on the back side of the rotating disc (2); the sliding groove (5) consists of a notch formed in the cutter head (9) and the front surface of the rotary disc (2); the three sliding grooves (5) can be intersected with the central axis of the cutter head (9) after being prolonged; when the rotating disc (2) is rotated, the adjusting column (10) can be moved along the waist length direction of the straight waist-shaped hole (12), the sliding block (3) can slide along the sliding groove (5), and the sliding block (3) can be fixed in the sliding groove (5) without sliding any more through the locking nut (11) and the threaded adjustment of the adjusting column (10).

3. The catheter flat-end rotating self-centering cutter head according to claim 2, characterized in that the front face of the cutter head (9) is provided with protrusions on both sides of the notch for deepening the chute (5).

4. A catheter flat end rotating self-centering tool bit according to claim 3, characterized in that the boss is provided with a slider fixing auxiliary screw hole (8) opening transversely into the chute (5).

5. Catheter flat-end rotating self-centering tool bit according to claim 2, characterized in that the waist length of two adjacent straight waist-shaped holes (12) is at an angle of 60 ° and the angle of two adjacent slide grooves (5) is 120 °.