CN211071946U

CN211071946U - Hard alloy drill bit for reaming

Info

Publication number: CN211071946U
Application number: CN201922042905.6U
Authority: CN
Inventors: 王贵绍
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-24
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a carbide drill bit is used in reaming, including connector, drillstock, gim peg, first drilling rod, chip guide groove, first blade mounting panel, first blade, first bolt, guide post, second drilling rod, second bolt, second blade mounting panel, guide way, screw hole and locating hole. The utility model discloses contain first reaming mechanism and second reaming mechanism, second reaming mechanism's second blade and first reaming mechanism's first blade once alright carry out the reaming to the counter sink, the efficiency to the counter sink reaming is greatly improved, first blade and second blade all can be dismantled, after first blade or second blade damage, only need to change the first blade or the second blade of damage can, need not to change whole device, it is comparatively convenient not only to change, and the use cost of device has been reduced, device simple structure, it is comparatively convenient to use.

Description

Hard alloy drill bit for reaming

Technical Field

The utility model relates to a carbide drill bit is used in reaming specifically is a carbide drill bit is used in reaming belongs to drill bit application technical field.

Background

In the mechanical processing process, drilling is a very common processing procedure, and a workpiece needs to be reamed after being drilled, wherein reaming is to enlarge the bottom of a drilled hole or the bottom of some types of foundation piers so as to increase the load bearing area of the drilled hole; the forging process that reduces hollow blank wall thickness and increase its internal and external diameters, during the reaming, the drill bit is essential instrument.

The drill bit of current reaming usefulness can only once carry out the reaming to the hole of a specification, when carrying out the reaming to the counter sink, need carry out two reamings, and is comparatively troublesome, greatly reduced to the reaming efficiency of counter sink, and the drill bit of current reaming usefulness is mostly integrative, and when the cutting edge damage of drill bit was unable to be used, whole drill bit all will more changed, has increased the use cost of drill bit, has certain not enoughly. Accordingly, a cemented carbide drill for reaming a hole has been proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide a cemented carbide drill for reaming to solve the above problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a carbide drill bit is used in reaming, including drill handle, first drilling rod, first reaming mechanism and second reaming mechanism, the top rigid coupling of first drilling rod has the drill handle, first reaming mechanism is installed to the outer wall of first drilling rod bottom department, open at the center of first drilling rod bottom surface has the guide way, and the top of guide way extends to the top department of drill handle, the outer wall level of drill handle bottom department opens threaded hole, the bottom department of first drilling rod installs second reaming mechanism;

the first hole expanding mechanism comprises a first blade mounting plate, a first blade and a first bolt, wherein a plurality of first blade mounting plates are fixedly connected to the outer wall of the bottom end of the first drill rod at uniform intervals, and one side faces of the first blade mounting plates are provided with the first blade through the first bolt;

the second reaming mechanism includes gim peg, guide post, second drilling rod, second bolt, second blade and second blade mounting panel, the rigid coupling of center department of second drilling rod top surface has the guide post, the even equidistance of opening of outer wall top-down of guide post top department has a plurality of locating holes, the guide post joint is in the guide way, the gim peg is installed to the screw hole internal thread of drillstock, one of them locating hole that the one end screw thread of gim peg passed the guide post extends to outside the drillstock, the even equidistance of outer wall of second drilling rod bottom department has polylith second blade mounting panel, polylith the second blade is all installed through the second bolt in a side of second blade mounting panel.

Preferably, a connector is fixedly connected to the center of the top surface of the drill shank, and a positioning clamping groove is formed in the connector.

Preferably, the first drill rod is provided with a thread-shaped chip guide groove, and the chip guide groove is positioned between the drill handle and the first blade mounting plate.

Preferably, the outer wall of the bottom of the drill handle is provided with two countersunk holes, one end of the fixing bolt is provided with a nut in a threaded manner, and the nut at the end part of the fixing bolt are both positioned in the countersunk holes.

Preferably, the quantity of first blade mounting panel and second blade mounting panel is six, just first blade mounting panel and second blade mounting panel all are 75 with the contained angle of horizontal plane.

Preferably, the first blade and the second blade are both cemented carbide blades.

The utility model has the advantages that:

1. the utility model discloses contain first reaming mechanism and second reaming mechanism, when reaming the counter sink, the second blade of second reaming mechanism and the first blade of first reaming mechanism can ream the counter sink once, have improved the reaming efficiency to the counter sink greatly, when not reaming the counter sink, can tear down the second reaming mechanism, are favorable to enlarging the application scope of the device;

2. the utility model discloses a first blade and second blade all can be dismantled, damage the back when first blade or second blade, only need change the damage first blade or second blade can, need not to change whole device, it is comparatively convenient not only to change, and has reduced the use cost of device, device simple structure, and it is comparatively convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic view of the internal structure of the first drill rod of the present invention;

fig. 3 is a schematic view of a second hole expanding mechanism of the present invention.

In the figure: 1. the drill bit comprises a connector, 2, a drill handle, 3, a fixing bolt, 4, a first drill rod, 5, a chip guide groove, 6, a first blade mounting plate, 7, a first blade, 8, a first bolt, 9, a guide column, 10, a second drill rod, 11, a second bolt, 12, a second blade, 13, a second blade mounting plate, 14, a guide groove, 15, a threaded hole, 16 and a positioning hole.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-3, a hard alloy drill bit for reaming comprises a drill handle 2, a first drill rod 4, a first reaming mechanism and a second reaming mechanism, wherein the drill handle 2 is fixedly connected to the top end of the first drill rod 4, the first reaming mechanism is installed on the outer wall of the bottom end of the first drill rod 4, a guide groove 14 is formed in the center of the bottom surface of the first drill rod 4, the top end of the guide groove 14 extends to the top of the drill handle 2, a threaded hole 15 is horizontally formed in the outer wall of the bottom of the drill handle 2, and the second reaming mechanism is installed at the bottom of the first drill rod 4;

the first hole expanding mechanism comprises a first blade mounting plate 6, first blades 7 and first bolts 8, a plurality of first blade mounting plates 6 are fixedly connected to the outer wall of the bottom end of the first drill rod 4 uniformly and equidistantly, and the first blades 7 are mounted on one side faces of the first blade mounting plates 6 through the first bolts 8;

second reamer constructs includes gim peg 3, guide post 9, second drilling rod 10, second bolt 11, second blade 12 and second blade mounting panel 13, the rigid coupling of center department of second drilling rod 10 top surface has guide post 9, the even equidistance of opening of outer wall top-down of guide post 9 top department has a plurality of locating holes 16, the joint of guide post 9 is in guide way 14, gim peg 3 is installed to the 15 internal threads of screw hole of drillstock 2, one of them locating hole 16 that the one end screw thread of gim peg 3 passed guide post 9 extends to outside drillstock 2, the even equidistance's of outer wall of second drilling rod 10 bottom department rigid coupling has polylith second blade mounting panel 13, polylith second blade 12 is all installed through second bolt 11 to a side of second blade mounting panel 13.

The center of the top surface of the drill handle 2 is fixedly connected with a connector 1, and a positioning clamping groove is formed in the connector 1, so that the device is convenient to mount; a thread-shaped chip guide groove 5 is formed in the first drill rod 4, and the chip guide groove 5 is located between the drill handle 2 and the first blade mounting plate 6, so that chip guide during hole expansion is facilitated; the outer wall of the bottom of the drill handle 2 is provided with two countersunk holes, one end of the fixing bolt 3 is provided with a nut in a threaded manner, and the nut at the end part of the fixing bolt 3 are both positioned in the countersunk holes, so that the fixing bolt 3 is convenient to mount; the quantity of first blade mounting panel 6 and second blade mounting panel 13 is six, just first blade mounting panel 6 and second blade mounting panel 13 all are 75 with the contained angle of horizontal plane, first blade 7 and second blade 12 are the carbide blade, are convenient for guarantee first blade 7 and second blade 12's life.

When the utility model is used, when the countersunk hole is reamed, the guide post 9 of the second reaming mechanism is clamped in the cavity of the first drill rod 4, the position of the guide post 9 is fixed through the fixing bolt 3, when the countersunk hole is reamed, the second blade 12 of the second reaming mechanism and the first blade 7 of the first reaming mechanism can ream the countersunk hole once, thereby greatly improving the reaming efficiency of the countersunk hole, when the countersunk hole is not reamed, the second reaming mechanism can be detached, which is beneficial to enlarging the application range of the device, the first blade 7 of the device is arranged on the first blade mounting plate 6 through the first bolt 8, the second blade 12 is arranged on the second blade mounting plate 13 through the second bolt 11, when the first blade 7 or the second blade 12 is damaged, only the damaged first blade 7 or the second blade 12 needs to be replaced, and the whole device does not need to be replaced, not only the replacement is more convenient, but also the use cost of the device is reduced, the structure of the device is simple, and the use is more convenient.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A hard alloy drill bit for reaming is characterized in that: the drilling machine comprises a drill handle (2), a first drill rod (4), a first hole expanding mechanism and a second hole expanding mechanism, wherein the drill handle (2) is fixedly connected to the top end of the first drill rod (4), the first hole expanding mechanism is installed on the outer wall of the bottom end of the first drill rod (4), a guide groove (14) is formed in the center of the bottom surface of the first drill rod (4), the top end of the guide groove (14) extends to the top of the drill handle (2), a threaded hole (15) is horizontally formed in the outer wall of the bottom of the drill handle (2), and the second hole expanding mechanism is installed at the bottom of the first drill rod (4);

the first hole expanding mechanism comprises a first blade mounting plate (6), a first blade (7) and a first bolt (8), wherein a plurality of first blade mounting plates (6) are fixedly connected to the outer wall of the bottom end of the first drill rod (4) at equal intervals, and the first blade (7) is mounted on one side face of each of the plurality of first blade mounting plates (6) through the first bolt (8);

the second hole expanding mechanism comprises a fixed bolt (3), a guide post (9), a second drill rod (10), a second bolt (11), a second blade (12) and a second blade mounting plate (13), a guide column (9) is fixedly connected at the center of the top surface of the second drill rod (10), a plurality of positioning holes (16) are uniformly and equidistantly formed in the outer wall of the top end of the guide column (9) from top to bottom, the guide post (9) is clamped in the guide groove (14), a fixing bolt (3) is arranged in a threaded hole (15) of the drill handle (2) through internal threads, one end of the fixing bolt (3) penetrates through one positioning hole (16) of the guide column (9) to extend out of the drill handle (2), the even equidistance rigid coupling of outer wall of second drilling rod (10) bottom department has polylith second blade mounting panel (13), polylith second blade (12) are all installed through second bolt (11) to a side of second blade mounting panel (13).

2. The cemented carbide drill bit for reaming a hole according to claim 1, wherein: the drill handle is characterized in that a connector (1) is fixedly connected to the center of the top surface of the drill handle (2), and a positioning clamping groove is formed in the connector (1).

3. The cemented carbide drill bit for reaming a hole according to claim 1, wherein: the drill rod is characterized in that a thread-shaped chip guide groove (5) is formed in the first drill rod (4), and the chip guide groove (5) is located between the drill handle (2) and the first blade mounting plate (6).

4. The cemented carbide drill bit for reaming a hole according to claim 1, wherein: the outer wall of the bottom of the drill handle (2) is provided with two countersunk holes, one end of the fixing bolt (3) is provided with a nut in a threaded manner, and the nut at the end part of the fixing bolt (3) are both positioned in the countersunk holes.

5. The cemented carbide drill bit for reaming a hole according to claim 1, wherein: the quantity of first blade mounting panel (6) and second blade mounting panel (13) is six, just first blade mounting panel (6) and second blade mounting panel (13) all are 75 with the contained angle of horizontal plane.

6. The cemented carbide drill bit for reaming a hole according to claim 1, wherein: the first blade (7) and the second blade (12) are both cemented carbide blades.