CN210702735U

CN210702735U - Drill bit with circulative cooling function

Info

Publication number: CN210702735U
Application number: CN201921411410.XU
Authority: CN
Inventors: 赵云松; 官建国
Original assignee: Ezhou Xingfang Grinding Tools Co ltd
Current assignee: Ezhou Xingfang Grinding Tools Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-09
Anticipated expiration: 2029-08-28
Also published as: WO2021036692A1

Abstract

The utility model relates to a drill bit with a circulating cooling function, which comprises a drill bit body, a drill bushing, a cooling liquid pipeline and a cooling device, the drill bit body sequentially comprises a drill handle, a drill body and a drill tip from top to bottom, a cooling flow passage is arranged in the drill bit body, the cooling flow channel is U-shaped, the lower end of the cooling flow channel extends to the drill point, an inlet and an outlet are respectively arranged at the two sides of the cooling flow channel, the inlet and the outlet are arranged on two sides of the drill body, the inlet is closer to the drill point relative to the outlet, the drill body is coated with a drill sleeve, the drill sleeve is provided with a first through hole and a second through hole, the drill body is provided with a first annular groove and a second annular groove, the first annular groove is communicated with the inlet and the first through hole respectively, the second annular groove is communicated with the outlet and the second through hole respectively, and planes where the first annular groove and the second annular groove are located are perpendicular to the central axis of the drill bit. The drill bit can effectively solve the problem of overheating of the drill bit and can recycle cooling liquid.

Description

Drill bit with circulative cooling function

Technical Field

The utility model relates to a machine tooling field, specific saying is a drill bit with circulative cooling function.

Background

Traditional drill bit is solid drill bit, and the drill bit is adding man-hour, because the drill bit can produce a large amount of heats with the frictional force between the work piece of being processed, and the drill bit is mostly carbide and makes, has good heat conductivity, and on the heat that the friction produced can transmit the drill bit rapidly, the cutting performance that too high temperature can make the drill bit descends to and can influence the life of drill bit.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above not enough, provide a drill bit with circulative cooling function, this drill bit can the overheated problem of effectual solution drill bit to but cyclic utilization coolant liquid.

For solving the technical problem, the utility model discloses a following technical scheme:

a drill bit with a circulating cooling function comprises a drill bit body, a drill sleeve, a cooling liquid pipeline and a cooling device, wherein the drill bit body sequentially comprises a drill handle, a drill body and a drill point from top to bottom, a cooling flow channel is arranged inside the drill bit body, the cooling flow channel is U-shaped, the lower end of the cooling flow channel extends to the drill point, an inlet and an outlet are respectively arranged on two sides of the cooling flow channel, the inlet and the outlet are arranged on two sides of the drill body, the inlet is closer to the drill point relative to the outlet, the drill sleeve is wrapped on the outer side of the drill body, a first through hole and a second through hole are formed in the drill sleeve, a first annular groove and a second annular groove are formed in the drill body, the first annular groove is respectively communicated with the inlet and the first through hole, the second annular groove is respectively communicated with the outlet and the second through hole, the plane where the first annular groove and, the cooling liquid pipeline one end and second through-hole connection, the other end of cooling liquid pipeline and the middle part intercommunication of bleeder, the first through-hole intercommunication of bleeder one end, the other end and cooling liquid conveyer pipe intercommunication, still be provided with the water pump on the bleeder, the water pump is used for carrying the coolant liquid to the import in.

Furthermore, a cooling device is arranged on the part of the cooling liquid pipeline, which is positioned outside the drill bit.

Furthermore, a one-way valve is arranged between the branch pipe and the cooling liquid conveying pipe, and the one-way valve only allows the liquid to be conveyed from the cooling liquid conveying pipe to the branch pipe in a one-way mode.

Further, the coolant conveying pipe comprises a first coolant conveying pipe and a second coolant conveying pipe, one end of the first coolant conveying pipe and one end of the second coolant conveying pipe are communicated to form a communication end, and the communication end is communicated with one end of the branch pipe.

Furthermore, the cooling liquid pipeline is divided into a plurality of sub-pipelines at branch points, the other ends of all the sub-pipelines are combined into the cooling liquid pipeline at a convergence point, and a cooling device is arranged on the outer side of each sub-pipeline.

Further, the cooling device is a water tank filled with cold water.

Further, the first cooling liquid is water, and the second cooling liquid is ethylene glycol.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

the cooling liquid is respectively conveyed through the first cooling liquid conveying pipe and the second cooling liquid conveying pipe and can be mutually fused when passing through the branch pipes, so that the mixed workpieces of the cooling liquid are reduced; the cooling liquid flows to the cooling device after absorbing the heat of the drill bit in the cooling flow channel, the cooling device cools the cooling liquid, and the cooled cooling liquid can flow to the cooling channel again, so that the cyclic utilization of the cooling liquid can be achieved; the water pump arranged on the cooling liquid pipeline can ensure that the cooling liquid can effectively complete circulation; when the cooling liquid flows to the cooling device, the cooling liquid pipeline is divided into a plurality of sub-pipelines, so that the contact area between the pipeline and the cooling device is increased, and the heat transfer efficiency is improved; the drill body is located the annular groove that import and exit were seted up, can let the drill bit when rotatory, and the coolant liquid flows in the through-hole by the coolant liquid pipeline, and in the annular groove again, flows in the import, perhaps flows to the inslot by the export, and the through-hole flows to again, flows to the coolant liquid pipeline again, can let the drill bit also can accomplish the circulation of coolant liquid when rotatory.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

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

FIG. 2 is a schematic view of a drill bit body.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the drill bit comprises a drill bit body, 11, a drill handle, 12, a drill body, 13, a drill body, 14, a drill tip, 15, a first annular groove, 16, a second annular groove, 2, a drill sleeve, 21, a first through hole, 22, a second through hole, 3, a cooling liquid pipeline, 31, a branch pipe, 4, a cooling device, 5, a cooling flow channel, 51, an inlet, 52, an outlet, 6, a first cooling liquid conveying pipe, 7, a second cooling liquid conveying pipe, 8, a water pump, 9 and a one-way valve.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, a drill bit with a circulating cooling function comprises a drill bit body 1, a drill bushing 2, a cooling liquid pipeline 3 and a cooling device 4, wherein the drill bit body 1 sequentially comprises a drill shank 11, a drill body 12, a drill body 13 and a drill tip 14 from top to bottom, a cooling flow passage 5 is arranged inside the drill bit body 1, the cooling flow passage 5 is U-shaped, the lower end of the cooling flow passage extends to the drill tip 14, an inlet 51 and an outlet 52 are respectively arranged on two sides of the cooling flow passage 5, the inlet 51 and the outlet 52 are arranged on two sides of the drill body 12, the inlet 51 is closer to the drill tip 14 than the outlet 52, the drill bushing 2 is wrapped on the outer side of the drill body 12, a first through hole 21 and a second through hole 22 are formed in the drill bushing 2, a first annular groove 15 and a second annular groove 16 are formed in the drill body 12, the first annular groove 15 is respectively communicated with the inlet 51 and the first through hole 21, the second annular groove 16 is respectively communicated with the outlet 52 and the second through hole 22, the plane where the first annular groove 15 and the second annular groove 16 are located is perpendicular to the central axis of the drill bit, one end of the cooling liquid pipeline 3 is connected with the second through hole 22, the other end of the cooling liquid pipeline 3 is communicated with the middle of the branch pipe 31, the first through hole 21 at one end of the branch pipe 31 is communicated, the other end of the branch pipe is communicated with the cooling liquid conveying pipe, the branch pipe 31 is further provided with a water pump 8, and the water pump 8 is used for conveying cooling liquid to the inlet 51.

In one embodiment, the cooling fluid conduit 3 is provided with a cooling device 4 at a location outside the drill bit.

In one embodiment, a one-way valve 9 is disposed between the branch pipe 31 and the coolant delivery pipe, and the one-way valve 9 allows only one-way delivery of liquid from the coolant delivery pipe to the branch pipe 31.

As an embodiment, the cooling liquid delivery pipe includes a first cooling liquid delivery pipe 6 and a second cooling liquid delivery pipe 7, one end of the first cooling liquid delivery pipe 6 and one end of the second cooling liquid delivery pipe 7 are communicated to form a communication end, and the communication end is communicated with one end of the branch pipe 31.

In one embodiment, the coolant pipe 3 is divided into several sub-pipes at the branch point, the other ends of all the sub-pipes are combined into the coolant pipe 3 at the convergence point, and a cooling device 4 is arranged outside the sub-pipes.

In one embodiment, the cooling device 4 is a water tank filled with cold water.

In one embodiment, the first cooling fluid is water and the second cooling fluid is ethylene glycol.

The utility model discloses coolant liquid circulation flow:

the first cooling liquid is input through a first cooling liquid conveying pipe, the second cooling liquid is input through a second cooling liquid conveying pipe, the first cooling liquid and the second cooling liquid flow to the branch pipe together, the first cooling liquid and the second cooling liquid are mixed into the cooling liquid through the pressure provided by the water pump, the cooling liquid flows to a first through hole in the drill bushing, flows into a first annular groove formed in the outer portion of the drill body through the first through hole, flows to an inlet from the first annular groove and flows into a cooling flow channel; the cooling liquid flows from the drill body to the drill body, from the drill body to the drill tip, from the drill tip to the drill body, from the drill body to the drill body and then to the outlet, so that the whole drill bit is cooled completely, then flows into a second annular groove formed outside the drill body from the outlet, and then flows to a cooling liquid pipeline from the second annular groove, and in the flowing process, the cooling liquid absorbs the heat of the drill bit; the cooling liquid absorbing heat flows to the cooling device through the cooling liquid pipeline, the cooling device absorbs the heat of the cooling liquid, the one-way valve arranged on the branch pipe prevents the cooling liquid from flowing out, the cooling liquid flowing out of the cooling device flows to the inlet again, and primary circulation is completed; after the cooling liquid in the whole circulation reaches saturation, the first cooling liquid conveying pipe and the second cooling liquid conveying pipe stop conveying the first cooling liquid and the second cooling liquid, and the mixed cooling liquid circularly flows between the drill bit and the cooling liquid pipeline and is continuously cooled.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. The drill bit with the circulating cooling function is characterized by comprising a drill bit body (1), a drill bushing (2), a cooling liquid pipeline (3) and a cooling device (4), wherein the drill bit body (1) sequentially comprises a drill handle (11), a drill body (12), a drill body (13) and a drill tip (14) from top to bottom, a cooling flow channel (5) is arranged inside the drill bit body (1), the cooling flow channel (5) is U-shaped, the lower end of the cooling flow channel extends to the drill tip (14), an inlet (51) and an outlet (52) are respectively arranged on two sides of the cooling flow channel (5), the inlet (51) and the outlet (52) are arranged on two sides of the drill body (12), the inlet (51) is closer to the drill tip (14) relative to the outlet (52), the drill bushing (2) is wrapped on the outer side of the drill body (12), a first through hole (21) and a second through hole (22) are formed in the drill bushing (2), the drill bit is characterized in that a first annular groove (15) and a second annular groove (16) are formed in the drill body (12), the first annular groove (15) is communicated with an inlet (51) and a first through hole (21) respectively, the second annular groove (16) is communicated with an outlet (52) and a second through hole (22) respectively, the plane where the first annular groove (15) and the second annular groove (16) are located is perpendicular to the central axis of the drill bit, one end of a cooling liquid pipeline (3) is connected with the second through hole (22), the other end of the cooling liquid pipeline (3) is communicated with the middle of a branch pipe (31), the first through hole (21) in one end of the branch pipe (31) is communicated with a cooling liquid conveying pipe, a water pump (8) is further arranged on the branch pipe (31), and the water pump (8) is used for conveying cooling liquid into the inlet (51).

2. Drill bit with circulation cooling function according to claim 1, characterized in that the cooling liquid pipe (3) is provided with cooling means (4) at the location outside the drill bit.

3. Drill bit with circulation cooling according to claim 1, characterized in that a one-way valve (9) is arranged between the branch pipe (31) and the coolant conveying pipe, said one-way valve (9) allowing only one-way conveyance of liquid from the coolant conveying pipe to the branch pipe (31).

4. Drill bit with circulation cooling function according to claim 1, characterized in that the cooling liquid delivery pipe comprises a first cooling liquid delivery pipe (6) and a second cooling liquid delivery pipe (7), one end of the first cooling liquid delivery pipe (6) and one end of the second cooling liquid delivery pipe (7) are communicated to form a communication end, and the communication end is communicated with one end of the branch pipe (31).

5. Drill bit with circulation cooling function according to claim 1, characterized in that the coolant pipe (3) is divided into several sub-pipes at the branching point, the other ends of all sub-pipes are merged into the coolant pipe (3) at the converging point, and a cooling device (4) is arranged outside the sub-pipes.

6. Drill with circulation cooling according to claim 5, characterized in that the cooling means (4) is a tank filled with cold water.

7. The drill bit with circulation cooling function as claimed in claim 4, wherein the first cooling liquid is water and the second cooling liquid is ethylene glycol.