CN110548904B

CN110548904B - Forced reaming drill bit

Info

Publication number: CN110548904B
Application number: CN201910946685.1A
Authority: CN
Inventors: 李吴军
Original assignee: Changzhou Rongke New Material Co Ltd
Current assignee: Jiangsu Wushuang New Energy Technology Co ltd
Priority date: 2019-10-06
Filing date: 2019-10-06
Publication date: 2020-07-28
Anticipated expiration: 2039-10-06
Also published as: CN110548904A; CN111375806A; CN111375806B

Abstract

A forced hole expanding drill bit relates to a hole expanding drill bit, wherein a drill rod (18) is provided with a groove (13), the rear ends of a cutting board A (3) and a cutting board B (21) are hinged and connected with the near front part in the groove through a shaft (10), the front end of an inclined board A (11) is fixedly connected with the rear end of the cutting board A, and one side of the front end of the cutting board A is provided with a convex cutting edge A (1); the front end of the sloping plate B (12) is fixedly connected with the rear end of the cutting board B, and the front end of the cutting board B is provided with a convex cutting edge B (2) facing one side of the sloping plate B; the outer ring of the bearing (8) is fixedly connected to the inner wall of the lantern ring (9), the front end of the lantern ring is provided with a conical reducing ring (4), the bearing is sleeved at the front end of the drill rod at intervals, and the middle parts of the cutting board A and the cutting board B are positioned in an inner hole of the conical reducing ring; according to the invention, the rear ends of the cutting board A and the cutting board B are hinged with the inclined board A and the inclined board B, so that the bearing controls the inclined board A and the inclined board B to drive the cutting edge A of the cutting board A and the cutting edge B of the cutting board B to rapidly expand the holes.

Description

Forced reaming drill bit

[ technical field ] A method for producing a semiconductor device

The invention relates to a hole expanding drill bit, in particular to a forced hole expanding drill bit.

[ background of the invention ]

When a casting is processed in the field of machining, a screw cannot be arranged on the casting, so that the casting is difficult to be connected with other workpieces in later use, and the existing connection mode is that a thin plate with holes is arranged on the workpiece, and then the two workpieces are connected by using bolts; the other mode is that a screw hole is machined in a workpiece, and the connection between the two workpieces is obtained through a screw, so that the connection between the workpiece and the workpiece is extremely limited, and particularly when other various devices are required to be fixed on the workpiece, the mode of machining the screw hole in the workpiece cannot meet the actual requirement; the screw rod installation in special needs can not be adapted; one end of the screw rod is connected with the workpiece through welding, so that the firmness is poor; the implantation of a screw on a workpiece is always the research and development direction of technicians in the field and is also a technical bottleneck for adding new functions in the later use process of the workpiece; in the known patent, the bearing is provided at the front end of the drill rod, and the cutting blades are provided at both sides of the middle portion of the drill rod to achieve the purpose of reaming, but the bearing at the end portion is easily not taken out due to the influence of burrs or metal chips during use.

Reference to the literature

Chinese patent CN 109702248A.

[ summary of the invention ]

In order to overcome the defects in the background art, the invention discloses a forced reaming drill bit, which realizes the purpose that a bearing controls an inclined plate A and an inclined plate B to drive a cutting edge A of the cutting plate A and a cutting edge B of the cutting plate B to rapidly ream by utilizing the hinged connection of the rear ends of the cutting plate A and the cutting plate B and the inclined plate A and the inclined plate B.

In order to achieve the purpose, the invention adopts the following technical scheme:

a forced reaming drill bit comprises a drill rod, a bearing, a cutter plate A, a cutter plate B and a conical reducing ring, wherein a groove penetrating through two sides of the drill rod is formed from the front end surface to the middle part of the drill rod, the rear ends of the cutter plate A and the cutter plate B are hinged to the front part close to the inner part of the groove through a shaft, the front end of an inclined plate A is fixedly connected with the rear end of the cutter plate A, the rear part of the inclined plate A is positioned outside the drill rod on one side of the groove, and a convex cutting edge A is arranged on one side of the front end of; the front end of the inclined plate B is fixedly connected with the rear end of the cutting plate B, the rear part of the inclined plate B is positioned outside the drill rod on the other side of the groove, and the front end of the cutting plate B is provided with a convex cutting edge B facing one side of the inclined plate B; the bearing outer ring is fixedly connected to the inner wall of the lantern ring, the front end of the lantern ring is provided with the conical reducing ring, inner ring inner holes of the bearing are sleeved at the front end of the drill rod at intervals, and the middle parts of the cutting board A and the cutting board B are located in inner holes of the conical reducing ring.

And bearing dust covers are respectively arranged between the inner rings and the outer rings at the two ends of the bearing.

The forced reaming drill bit is provided with a conical ring sheet between the front end of the lantern ring and the conical reducing ring.

The bottom of the groove is provided with an arc-shaped groove bottom.

Force reaming drill bit, set up to the reducing section near the front end of drilling rod, the groove distributes the preceding terminal surface and the left and right sides of reducing section, both sides are equipped with the cutting groove face respectively around the reducing section, and shaft hole B runs through two cutting groove faces of reducing section, and in shaft hole A and the shaft hole C that the rear end of cutting board A and cutting board B set up were worn at the middle part of axle, the both ends of axle are fixed respectively in the shaft hole B of inslot both sides wall.

The forced reaming bit is characterized in that a conical transition surface is arranged between the drill rod and the diameter reducing section.

The middle rear part of the drill rod of the forced reaming drill bit is provided with a handheld expanding section.

And a conical transition A is arranged between the front part of the handheld expanding section of the drill rod and the drill rod.

And a conical transition B is arranged between the rear part of the handheld expanding section of the drill rod and the drill rod.

The forced hole expanding drill bit is characterized in that a plurality of anti-skid protrusions are uniformly distributed on the handheld hole expanding section.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

according to the forced reaming bit, the cutting edge A and the cutting edge B are respectively arranged at the front ends of the cutting board A and the cutting board B, the inner ring of the bearing is utilized to press the inclined board A at the rear end of the cutting board A and the inclined board B at the rear end of the cutting board B to force the cutting edge A and the cutting edge B to expand the diameter of the middle part of a workpiece hole, a tapered reducing ring is inserted into an orifice when working, a tapered ring piece prevents dust from blocking the bearing, and a lantern ring connected to the outer ring of the bearing obtains smoothness when a drill rod rotates; the bearing broaching machine is reasonable in structure and convenient to take out, the broaching progress is effectively improved, and the trouble of taking out a bearing for the second time is overcome.

[ description of the drawings ]

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the assembled structure of the present invention;

FIG. 3 is a schematic perspective view of a tapered reducing ring according to the present invention;

FIG. 4 is a schematic perspective view of the assembly structure of the bearing and the dust-proof cover of the bearing according to the present invention;

FIG. 5 is a perspective view of the drill stem of the present invention;

FIG. 6 is a perspective view of a cutting board A according to the present invention;

FIG. 7 is a schematic view of the present invention in use;

in the figure: 1. a cutting edge A; 2. a cutting edge B; 3. a cutting board A; 4. a tapered reducing ring; 5. a conical ring segment; 6. a bearing dust cover; 7. an inner ring inner hole; 8. a bearing; 9. a collar; 10. a shaft; 11. an inclined plate A; 12. an inclined plate B; 13. a groove; 14. the bottom of the arc groove; 15. a taper transition A; 16. a handheld expanding section; 17. a tapered transition B; 18. a drill stem; 19. the shaft hole A; 20. a shaft hole B; 21. a cutting board B; 22. a shaft hole C; 23. a reducing section; 24. cutting a groove surface; 25. transition surface; 26. a workpiece; 27. an expanded annular surface.

[ detailed description ] embodiments

The present invention will be explained in more detail by the following examples, which are intended to disclose all changes and modifications within the scope of the present invention, and the present invention is not limited to the following examples;

the forced reaming drill bit described in conjunction with fig. 1-6 comprises a drill rod 18, a bearing 8, a cutter plate A3, a cutter plate B21 and a conical reducing ring 4, wherein a groove 13 penetrating through two sides of the drill rod 18 is formed from the front end surface to the middle part of the drill rod 18, the bottom of the groove 13 is provided with an arc-shaped groove bottom 14, the rear ends of the cutter plate A3 and the cutter plate B21 are hinged to the front part close to the inside of the groove 13 through a shaft 10, the front end of an inclined plate A11 is fixedly connected with the rear end of the cutter plate A3, the rear part of the inclined plate A11 is positioned outside the drill rod 18 on one side of the groove 13, and one side of the front end of the cutter; the front end of the inclined plate B12 is fixedly connected with the rear end of the knife plate B21, the rear part of the inclined plate B12 is positioned outside the drill rod 18 at the other side of the groove 13, and the front end of the knife plate B21 is provided with a convex cutting edge B2 facing one side of the inclined plate B12; be equipped with bearing shield 6 between the both ends inner circle of bearing 8 and outer lane respectively, bearing 8 outer lane fixed connection is on the inner wall of lantern ring 9, is equipped with toper undergauge ring 4 at the front end of lantern ring 9, is equipped with toper ring piece 5 between lantern ring 9 front end and the toper undergauge ring 4, the inner circle hole 7 interval cover of bearing 8 is at the front end of drilling rod 18, and the middle part of cutting board A3 and cutting board B21 is in the hole of toper undergauge ring 4.

With reference to fig. 1, 2 or 5, a reducing section 23 is provided near the front end of the drill rod 18, the gap between the drill rod 18 and the inner ring of the bearing can be increased by providing the reducing section 23, the gap generated thereby is favorable for discharging cutting chips, a tapered transition surface 25 is provided between the drill rod 18 and the reducing section 23, the grooves 13 are distributed on the front end surface and the left and right sides of the reducing section 23, the front side and the rear side of the reducing section 23 are respectively provided with a cutting groove surface 24, a shaft hole B20 penetrates through the two cutting groove surfaces 24 of the reducing section 23, the middle part of the shaft 10 penetrates through the shaft hole a19 and the shaft hole C22 provided at the rear end of the knife plate A3 and the knife plate B21, and the two ends of the shaft 10 are respectively fixed in the shaft holes B20 on the two side walls in the groove 13.

With reference to fig. 1, 2 or 5, in view of the positioning problem of using the front insertion hole, the application provides a hand-held expanding section 16 at the middle rear part of the drill rod 18; a conical transition A15 is arranged between the front part of the handheld expanding section 16 of the drill rod 18 and the drill rod 18; a conical transition B17 is arranged between the rear part of the handheld expanding section 16 of the drill rod 18 and the drill rod 18; a plurality of anti-skid protrusions are uniformly distributed on the handheld expanding section 16.

The forced reaming bit disclosed by the invention is implemented by combining the attached drawings 1 to 7, during the use process, after a workpiece 26 is fixed, the position needing to be drilled is marked according to the needs, then a blind hole or a through hole is drilled by using the bit, the clamping part at the rear end of a drill rod 18 is inserted into the clamping piece of the drilling tool, the clamping end of the drill rod is fixed by screwing the drilling and rolling head through the clamping piece, the inner ring of a bearing 8 is sleeved on the reducing section 23 at the front end of the drill rod 18 by taking up the lantern ring 9 by hand, then the front ends of a cutter plate A3 and a cutter plate B21 are placed into the blind hole or the through hole, the drill rod 18 is pressed by using the drilling tool, at the moment, the rear end of the inner ring of the bearing 8 is pressed on the inclined plate A11 and the inclined plate B12, the drilling tool is started to switch the drill rod 18 to rotate, the cutting edge A1 of the cutter plate A3 and the cutting edge B2 of the cutter plate B21 are used, the drill rod 18 is slowly pulled outwards by gripping the handheld expanding section 16, the front ends of the cutter plate A3 and the cutter plate B21 which lose pressure are combined and withdrawn from the blind hole or the through hole, the lantern ring 9 is also withdrawn synchronously along with the withdrawal of the drill rod 18, the blind hole or the through hole is washed by a high-pressure water gun to complete the operation, and then the next operation is carried out according to the design.

The present invention is not described in detail in the prior art.

Claims

1. The utility model provides a force reamer bit, includes drilling rod (18), bearing (8), cutting board A (3), cutting board B (21) and toper undergauge ring (4), characterized by: grooves (13) penetrating through two sides of the drill rod (18) are formed from the front end face to the middle of the drill rod (18), the rear ends of the cutter plate A (3) and the cutter plate B (21) are hinged to the front portion, close to the inside of the grooves (13), of the rear ends of the cutter plate A (3), the front end of the inclined plate A (11) is fixedly connected with the rear end of the cutter plate A (3), the rear portion of the inclined plate A (11) is located on the outer portion of the drill rod (18) on one side of the grooves (13), and the front end of the cutter plate A (3) is provided with a protruding cutting edge A (1) facing one side of; the front end of the sloping plate B (12) is fixedly connected with the rear end of the cutting plate B (21), the rear part of the sloping plate B (12) is positioned outside the drill pipe (18) at the other side of the groove (13), and the front end of the cutting plate B (21) is provided with a convex cutting edge B (2) facing one side of the sloping plate B (12); bearing (8) outer lane fixed connection is on the inner wall of lantern ring (9), is equipped with toper undergauge ring (4) at the front end of lantern ring (9), the inner circle hole (7) interval cover of bearing (8) is at the front end of drilling rod (18), and the middle part of cutting board A (3) and cutting board B (21) is in the hole of toper undergauge ring (4).

2. The forced reamer bit of claim 1, wherein: bearing dust covers (6) are respectively arranged between the inner ring and the outer ring at two ends of the bearing (8).

3. The forced reamer bit of claim 1, wherein: a conical ring sheet (5) is arranged between the front end of the lantern ring (9) and the conical reducing ring (4).

4. The forced reamer bit of claim 1, wherein: the bottom of the groove (13) is provided with an arc-shaped groove bottom (14).

5. The forced reamer bit of claim 1, wherein: the drill rod is characterized in that a reducing section (23) is arranged at the front end, close to the drill rod (18), of the drill rod, cutting groove surfaces (24) are arranged on the front side and the rear side of the reducing section (23) respectively, a shaft hole B (20) penetrates through the two cutting groove surfaces (24) of the reducing section (23), the middle of a shaft (10) penetrates through a shaft hole A (19) and a shaft hole C (22) formed in the rear ends of a cutter plate A (3) and a cutter plate B (21), and two ends of the shaft (10) are fixed in the shaft holes B (20) of two inner side walls of a groove (13) respectively.

6. The forced reamer bit of claim 5, wherein: a conical transition surface (25) is arranged between the drill rod (18) and the reducing section (23).

7. The forced reamer bit of claim 1, wherein: and a handheld expanding section (16) is arranged at the middle rear part of the drill rod (18).

8. The forced reamer bit of claim 7, wherein: a taper transition A (15) is arranged between the front part of the handheld expanding section (16) of the drill rod (18) and the drill rod (18).

9. The forced reamer bit of claim 7, wherein: a taper transition B (17) is arranged between the rear part of the handheld expanding section (16) of the drill rod (18) and the drill rod (18).

10. The forced reamer bit of claim 7, wherein: a plurality of anti-skid protrusions are uniformly distributed on the handheld expanding section (16).