WO2021036692A1 - Drill bit with circulating cooling function - Google Patents

Drill bit with circulating cooling function Download PDF

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Publication number
WO2021036692A1
WO2021036692A1 PCT/CN2020/106519 CN2020106519W WO2021036692A1 WO 2021036692 A1 WO2021036692 A1 WO 2021036692A1 CN 2020106519 W CN2020106519 W CN 2020106519W WO 2021036692 A1 WO2021036692 A1 WO 2021036692A1
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Prior art keywords
drill
cooling
pipe
drill bit
cooling liquid
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Ceased
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PCT/CN2020/106519
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French (fr)
Chinese (zh)
Inventor
赵云松
官建国
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EZHOU XINGFANG GRINDING TOOLS Co Ltd
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EZHOU XINGFANG GRINDING TOOLS Co Ltd
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Publication of WO2021036692A1 publication Critical patent/WO2021036692A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B51/00Tools for drilling machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B51/00Tools for drilling machines
    • B23B51/06Drills with lubricating or cooling equipment

Definitions

  • the invention relates to the field of machining, in particular to a drill bit with a circulating cooling function.
  • the technical problem to be solved by the present invention is to address the above shortcomings and provide a drill bit with a circulating cooling function, which can effectively solve the problem of overheating of the drill bit and can circulate cooling liquid.
  • the present invention adopts the following technical solutions:
  • a drill bit with a circulating cooling function comprising a drill body, a drill sleeve, a coolant pipe, and a cooling device.
  • the drill body includes a drill shank, a drill body, a drill body, and a drill tip from top to bottom.
  • the inside of the drill body A cooling channel is provided, the cooling channel is U-shaped and the lower end extends to the drill tip, the two sides of the cooling channel are respectively provided with an inlet and an outlet, the inlet and the outlet are arranged on both sides of the drill body, the The inlet is closer to the drill point than the outlet.
  • the drill body is covered 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 through hole. Two annular grooves, the first annular groove communicates with the inlet and the first through hole respectively, the second annular groove communicates with the outlet and the second through hole respectively, and the plane on which the first annular groove and the second annular groove are located is connected to the drill bit.
  • the central axis of the cooling liquid pipe is vertical, one end of the cooling liquid pipe is connected with the second through hole, the other end of the cooling liquid pipe is connected with the middle of the branch pipe, one end of the branch pipe is connected with the first through hole, and the other end is connected with the cooling liquid.
  • the pipe is connected, and the branch pipe is also provided with a water pump, and the water pump is used to deliver the cooling liquid to the inlet.
  • a cooling device is provided on a part of the cooling liquid pipe located outside the drill bit.
  • a one-way valve is provided between the branch pipe and the cooling liquid delivery pipe, and the one-way valve only allows liquid to be transported in one direction from the cooling liquid delivery pipe to the branch pipe.
  • the cooling liquid delivery pipe includes a first cooling liquid delivery pipe and a second cooling liquid delivery pipe, one end of the first cooling liquid delivery pipe and the second cooling liquid delivery pipe are connected to form a communicating end, and the communicating end The end is connected with one end of the branch pipe.
  • the cooling liquid pipeline is divided into a plurality of sub-pipes at the branch point, the other ends of all the sub-pipes are merged into a cooling liquid pipeline at the converging point, and a cooling device is arranged outside the sub-pipes.
  • the cooling device is a water tank containing cold water.
  • the first cooling liquid is water
  • the second cooling liquid is ethylene glycol
  • the present invention has the following advantages after adopting the above technical solutions:
  • the coolant is transported through the first coolant delivery pipe and the second coolant delivery pipe, and merges with each other when passing through the branch pipes, reducing the mixing of coolant; the coolant flows to the cooling device after absorbing the heat of the drill in the cooling runner ,
  • the cooling device is cooling the cooling liquid, the cooled cooling liquid can flow to the cooling channel again, which can achieve the circulation of the cooling liquid; the water pump set on the cooling liquid pipeline can ensure the effective completion of the circulation of the cooling liquid; when flowing to the cooling device,
  • the coolant pipeline is divided into several sub-pipes, which increases the contact area between the pipeline and the cooling device, and improves the heat transfer efficiency; the annular groove opened at the inlet and outlet of the drill body allows the coolant to flow through the coolant pipeline when the drill bit is rotating It flows into the through hole, then flows into the annular groove, flows into the inlet, or flows from the outlet into the groove, then flows to the through hole, and then flows to the coolant pipe, allowing the drill bit to complete the circulation of the coolant
  • Figure 1 is a schematic diagram of the structure of the present invention
  • Figure 2 is a schematic diagram of the bit body structure.
  • Drill body 11, drill shank, 12, drill body, 13, drill body, 14, drill point, 15, first annular groove, 16, second annular groove, 2. drill sleeve, 21, first through hole , 22, second through hole, 3, coolant pipe, 31, branch pipe, 4, cooling device, 5, cooling runner, 51, inlet, 52, outlet, 6, first coolant delivery pipe, 7, No. 2. Coolant delivery pipe, 8. Water pump, 9. One-way valve.
  • a drill bit with a circulating cooling function includes a drill body 1, a drill sleeve 2, a coolant pipe 3, and a cooling device 4.
  • the drill body 1 includes a drill shank 11 from top to bottom. , The drill body 12, the drill body 13, and the drill tip 14.
  • the drill body 1 is provided with a cooling runner 5 inside, the cooling runner 5 is U-shaped and the lower end extends to the drill tip 14, the cooling runner 5
  • An inlet 51 and an outlet 52 are respectively provided on both sides. The inlet 51 and the outlet 52 are arranged on both sides of the drill body 12.
  • the inlet 51 is closer to the drill tip 14 than the outlet 52, and the outer side of the drill body 12 is covered with Drill sleeve 2, the drill sleeve 2 is provided with a first through hole 21 and a second through hole 22, the drill body 12 is provided with a first annular groove 15 and a second annular groove 16, the first annular groove 15 respectively communicate with the inlet 51 and the first through hole 21, and the second annular groove 16 communicates with the outlet 52 and the second through hole 22, respectively.
  • the plane on which the first annular groove 15 and the second annular groove 16 are located and the center of the drill bit The axis is vertical, one end of the cooling liquid pipe 3 is connected to the second through hole 22, the other end of the cooling liquid pipe 3 communicates with the middle of the branch pipe 31, one end of the branch pipe 31 communicates with the first through hole 21, and the other end
  • the branch pipe 31 is also provided with a water pump 8, and the water pump 8 is used to deliver the cooling liquid to the inlet 51.
  • a cooling device 4 is provided on a part of the cooling liquid pipe 3 located outside the drill bit.
  • a one-way valve 9 is provided between the branch pipe 31 and the cooling liquid delivery pipe, and the one-way valve 9 only allows liquid to be transported in one direction from the cooling liquid delivery pipe to the branch pipe 31.
  • the cooling liquid delivery pipe includes a first cooling liquid delivery pipe 6 and a second cooling liquid delivery pipe 7, and one end of the first cooling liquid delivery pipe 6 and the second cooling liquid delivery pipe 7 are connected to form A communicating end, and the communicating end is communicated with one end of the branch pipe 31.
  • the cooling liquid pipe 3 is divided into several sub-pipes at the branch point, the other ends of all the sub-pipes are merged into the cooling liquid pipe 3 at the converging point, and a cooling device 4 is provided outside the sub-pipes.
  • the cooling device 4 is a water tank containing cold water.
  • the first cooling liquid is water
  • the second cooling liquid is ethylene glycol
  • the first cooling liquid is input through the first cooling liquid delivery pipe, and the second cooling liquid is input through the second cooling liquid delivery pipe.
  • the first cooling liquid and the second cooling liquid flow to the branch pipe together.
  • the pressure provided by the water pump is used for the first cooling liquid.
  • the cooling liquid flows to the first through hole on the drill sleeve, flows through the first through hole into the first annular groove opened outside the drill body, and then flows from the first annular groove to the inlet, and then Flows into the cooling channel;
  • the cooling fluid in the cooling channel 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 flows to the outlet, and the entire drill bit is fully integrated Cool, and then flow into the second annular groove opened outside the drill body from the outlet, and then flow from the second annular groove to the coolant pipe.
  • the coolant absorbs the heat of the drill bit; the coolant that has absorbed the heat passes through the coolant again
  • the pipeline flows to the cooling device, and the cooling device absorbs the heat of the cooling liquid.
  • the one-way valve set on the branch pipe prevents the cooling liquid from flowing out.
  • the cooling liquid flowing out of the cooling device will flow to the inlet again to complete a cycle; the cooling liquid in the entire cycle reaches saturation
  • the first coolant delivery pipe and the second coolant delivery pipe will stop transporting the first coolant and the second coolant, and the mixed coolant will circulate between the drill bit and the coolant pipe for continuous cooling.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

A drill bit with a circulating cooling function, comprising a drill bit body (1), a drill bushing (2), a cooling liquid pipeline (3), and a cooling device (4). The drill bit body (1) sequentially comprises a drill handle (11), a drill body (12), a drill bit (13), and a drill tip (14) from top to bottom. A cooling flow channel (5) is formed in the drill bit body (1). The cooling flow channel (5) is U-shaped, and the lower end thereof extends to the drill tip (14). An inlet (51) and an outlet (52) are formed in two sides of the cooling flow channel (5), respectively. The inlet (51) and the outlet (52) are formed in two sides of the drill body (12). The inlet (51) is closer to the drill tip (14) relative to the outlet (52). The outer side of the drill body (12) is coated with the drill bushing (2). 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 communicated with the inlet (51) and the first through hole (21), respectively. The second annular groove (16) is communicated with the outlet (52) and the 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. The drill bit can effectively solve the problem that the drill bit is overheated, and the cooling liquid can be recycled.

Description

一种具有循环冷却功能的钻头Drill bit with circulating cooling function 技术领域Technical field

本发明涉及机加工领域,具体的讲是一种具有循环冷却功能的钻头。The invention relates to the field of machining, in particular to a drill bit with a circulating cooling function.

背景技术Background technique

传统的钻头,均为实心钻头,钻头在进行加工时,由于钻头与被加工工件之间的摩擦力会产生大量的热量,钻头多为硬质合金制成,具有良好的导热性,摩擦产生的热量会迅速传递到钻头上,过高的温度会使钻头的切削性能下降,以及会影响钻头的使用寿命。Traditional drill bits are solid drill bits. When the drill bit is being processed, a lot of heat will be generated due to the friction between the drill bit and the processed workpiece. Most of the drill bits are made of cemented carbide, which has good thermal conductivity and is caused by friction. Heat will be quickly transferred to the drill bit. Excessive temperature will reduce the cutting performance of the drill bit and affect the service life of the drill bit.

发明内容Summary of the invention

本发明要解决的技术问题是针对以上不足,提供一种具有循环冷却功能的钻头,该钻头能有效的解决钻头过热的问题,并且可循环利用冷却液。The technical problem to be solved by the present invention is to address the above shortcomings and provide a drill bit with a circulating cooling function, which can effectively solve the problem of overheating of the drill bit and can circulate cooling liquid.

为解决以上技术问题,本发明采用以下技术方案:To solve the above technical problems, the present invention adopts the following technical solutions:

一种具有循环冷却功能的钻头,包括钻头本体、钻套、冷却液管道和冷却装置,所述钻头本体由上到下依次包括钻柄、钻身、钻体和钻尖,所述钻头本体内部设置有冷却流道,所述冷却流道为U形且下端延伸至钻尖处,所述冷却流道两侧分别设置有进口和出口,所述进口和出口设置于钻身两侧,所述进口相对于出口更靠近钻尖,所述钻身的外侧包覆有钻套,所述钻套上开设有第一通孔和第二通孔,所述钻身上开设有第一环形槽和第二环形槽,所述第一环形槽分别与进口和第一通孔连通,第二环形槽分别与出口和第二通孔连通,所述第一环形槽和第二环形槽所在的平面与钻头的中轴线垂直,所述冷却液管道一端与第二通孔连接,所述冷却液管道的另一端与分支管的中部连通,所述分支管一端第一通孔连通,另一端与冷却液输送管连通,所述分支管上还设置有设置有水泵,所述水泵用于将冷却液输送至进口内。A drill bit with a circulating cooling function, comprising a drill body, a drill sleeve, a coolant pipe, and a cooling device. The drill body includes a drill shank, a drill body, a drill body, and a drill tip from top to bottom. The inside of the drill body A cooling channel is provided, the cooling channel is U-shaped and the lower end extends to the drill tip, the two sides of the cooling channel are respectively provided with an inlet and an outlet, the inlet and the outlet are arranged on both sides of the drill body, the The inlet is closer to the drill point than the outlet. The drill body is covered 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 through hole. Two annular grooves, the first annular groove communicates with the inlet and the first through hole respectively, the second annular groove communicates with the outlet and the second through hole respectively, and the plane on which the first annular groove and the second annular groove are located is connected to the drill bit The central axis of the cooling liquid pipe is vertical, one end of the cooling liquid pipe is connected with the second through hole, the other end of the cooling liquid pipe is connected with the middle of the branch pipe, one end of the branch pipe is connected with the first through hole, and the other end is connected with the cooling liquid. The pipe is connected, and the branch pipe is also provided with a water pump, and the water pump is used to deliver the cooling liquid to the inlet.

进一步的,所述冷却液管道位于钻头外部的部位上设置有冷却装置。Further, a cooling device is provided on a part of the cooling liquid pipe located outside the drill bit.

进一步的,所述分支管和冷却液输送管之间设置有单向阀门,所述单向阀门仅允许液体由冷却液输送管向分支管单向输送。Further, a one-way valve is provided between the branch pipe and the cooling liquid delivery pipe, and the one-way valve only allows liquid to be transported in one direction from the cooling liquid delivery pipe to the branch pipe.

进一步的,所述冷却液输送管包括第一冷却液输送管和第二冷却液输送管,所述第一冷却液输送管和第二冷却液输送管的一端连通形成连通端,且所述连通端与分支管一端连通。Further, the cooling liquid delivery pipe includes a first cooling liquid delivery pipe and a second cooling liquid delivery pipe, one end of the first cooling liquid delivery pipe and the second cooling liquid delivery pipe are connected to form a communicating end, and the communicating end The end is connected with one end of the branch pipe.

进一步的,所述冷却液管道在分支点处分为若干子管道,所有子管道的另一端在汇聚点处合并为冷却液管道,所述子管道外侧设置有冷却装置。Further, the cooling liquid pipeline is divided into a plurality of sub-pipes at the branch point, the other ends of all the sub-pipes are merged into a cooling liquid pipeline at the converging point, and a cooling device is arranged outside the sub-pipes.

进一步的,所述冷却装置为装有冷水的水箱。Further, the cooling device is a water tank containing cold water.

进一步的,所述第一冷却液为水,所述第二冷却液为乙二醇。Further, the first cooling liquid is water, and the second cooling liquid is ethylene glycol.

本发明采用以上技术方案后,与现有技术相比,具有以下优点:Compared with the prior art, the present invention has the following advantages after adopting the above technical solutions:

冷却液分别通过第一冷却液输送管和第二冷却液输送管输送,在经过分支管时会相互融合,减少了冷却液的混合工件;冷却液在冷却流道吸收钻头的热量后流向冷却装置,冷却装置在为冷却液降温,降温后的冷却液可重新流向冷却通道,可达到冷却液的循环利用;冷却液管道上设置的水泵可保证冷却液有效的完成循环;在流向冷却装置时,冷却液管道分出若干子管道,增加了管道与冷却装置的接触面积,提高了热传递效率;钻身位于进口和出口处开设的环形槽,可让钻头在旋转时,冷却液由冷却液管道流入通孔,再流入环形槽内,在流入进口,或者由出口流向槽内,再流向通孔,再流向冷却液管道,可让钻头在旋转时也能完成冷却液的循环。The coolant is transported through the first coolant delivery pipe and the second coolant delivery pipe, and merges with each other when passing through the branch pipes, reducing the mixing of coolant; the coolant flows to the cooling device after absorbing the heat of the drill in the cooling runner , The cooling device is cooling the cooling liquid, the cooled cooling liquid can flow to the cooling channel again, which can achieve the circulation of the cooling liquid; the water pump set on the cooling liquid pipeline can ensure the effective completion of the circulation of the cooling liquid; when flowing to the cooling device, The coolant pipeline is divided into several sub-pipes, which increases the contact area between the pipeline and the cooling device, and improves the heat transfer efficiency; the annular groove opened at the inlet and outlet of the drill body allows the coolant to flow through the coolant pipeline when the drill bit is rotating It flows into the through hole, then flows into the annular groove, flows into the inlet, or flows from the outlet into the groove, then flows to the through hole, and then flows to the coolant pipe, allowing the drill bit to complete the circulation of the coolant while rotating.

下面结合附图和实施例对本发明进行详细说明。The present invention will be described in detail below with reference to the drawings and embodiments.

附图说明Description of the drawings

图1为本发明结构示意图;Figure 1 is a schematic diagram of the structure of the present invention;

图2为钻头本体结构示意图。Figure 2 is a schematic diagram of the bit body structure.

附图中,各标号所代表的部件列表如下:In the drawings, the list of parts represented by each number is as follows:

1、钻头本体,11、钻柄,12、钻身,13、钻体,14、钻尖,15、第一环形槽,16、第二环形槽,2、钻套,21、第一通孔,22、第二通孔,3、冷却液管道,31、分支管,4、冷却装置,5、冷却流道,51、进口,52、出口,6、第一冷却液输送管,7、第二冷却液输送管,8、水泵,9、单向阀门。1. Drill body, 11, drill shank, 12, drill body, 13, drill body, 14, drill point, 15, first annular groove, 16, second annular groove, 2. drill sleeve, 21, first through hole , 22, second through hole, 3, coolant pipe, 31, branch pipe, 4, cooling device, 5, cooling runner, 51, inlet, 52, outlet, 6, first coolant delivery pipe, 7, No. 2. Coolant delivery pipe, 8. Water pump, 9. One-way valve.

具体实施方式detailed description

以下结合附图对本发明的原理和特征进行描述,所举实例只用于解释本发明,并非用于限定本发明的范围。The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention, and are not used to limit the scope of the present invention.

如图1和图2所示,一种具有循环冷却功能的钻头,包括钻头本体1、钻套2、冷却液管道3和冷却装置4,所述钻头本体1由上到下依次包括钻柄11、钻身12、钻体13和钻尖14,所述钻头本体1内部设置有冷却流道5,所述冷却流道5为U形且下端延伸至钻尖14处,所述冷却流道5两侧分别设置有进口51和出口52,所述进口51和出口52设置于钻身12两侧,所述进口51相对于出口52更靠近钻尖14,所述钻身12的外侧包覆有钻套2,所述钻套2上开设有第一通孔21和第二通孔22,所述钻身12上开设有第一环形槽15和第二环形槽16,所述第一环形槽15分别与进口51和第一通孔21连通,第二环形槽16分别与出口52和第二通孔22连通,所述第一环形槽15和第二环形槽16所在的平面与钻头的中轴线垂直,所述冷却液管道3一端与第二通孔22连接,所述冷却液管道3的另一端与分支管31的中部连通,所述分支管31一端第一通孔21连通,另一端与冷却液输送管连通,所述分支管31上还设置有设置有水泵8,所述水泵8用于将冷却液输送至进口51内。As shown in Figures 1 and 2, a drill bit with a circulating cooling function includes a drill body 1, a drill sleeve 2, a coolant pipe 3, and a cooling device 4. The drill body 1 includes a drill shank 11 from top to bottom. , The drill body 12, the drill body 13, and the drill tip 14. The drill body 1 is provided with a cooling runner 5 inside, the cooling runner 5 is U-shaped and the lower end extends to the drill tip 14, the cooling runner 5 An inlet 51 and an outlet 52 are respectively provided on both sides. The inlet 51 and the outlet 52 are arranged on both sides of the drill body 12. The inlet 51 is closer to the drill tip 14 than the outlet 52, and the outer side of the drill body 12 is covered with Drill sleeve 2, the drill sleeve 2 is provided with a first through hole 21 and a second through hole 22, the drill body 12 is provided with a first annular groove 15 and a second annular groove 16, the first annular groove 15 respectively communicate with the inlet 51 and the first through hole 21, and the second annular groove 16 communicates with the outlet 52 and the second through hole 22, respectively. The plane on which the first annular groove 15 and the second annular groove 16 are located and the center of the drill bit The axis is vertical, one end of the cooling liquid pipe 3 is connected to the second through hole 22, the other end of the cooling liquid pipe 3 communicates with the middle of the branch pipe 31, one end of the branch pipe 31 communicates with the first through hole 21, and the other end In communication with the cooling liquid delivery pipe, the branch pipe 31 is also provided with a water pump 8, and the water pump 8 is used to deliver the cooling liquid to the inlet 51.

作为一种实施方式,所述冷却液管道3位于钻头外部的部位上设置有冷却装置4。As an embodiment, a cooling device 4 is provided on a part of the cooling liquid pipe 3 located outside the drill bit.

作为一种实施方式,所述分支管31和冷却液输送管之间设置有单向阀门9,所述单向阀门9仅允许液体由冷却液输送管向分支管31单向输送。As an embodiment, a one-way valve 9 is provided between the branch pipe 31 and the cooling liquid delivery pipe, and the one-way valve 9 only allows liquid to be transported in one direction from the cooling liquid delivery pipe to the branch pipe 31.

作为一种实施方式,所述冷却液输送管包括第一冷却液输送管6和第二冷却液输送管7,所述第一冷却液输送管6和第二冷却液输送管7的一端连通形成连通端,且所述连通端与分支管31一端连通。As an embodiment, the cooling liquid delivery pipe includes a first cooling liquid delivery pipe 6 and a second cooling liquid delivery pipe 7, and one end of the first cooling liquid delivery pipe 6 and the second cooling liquid delivery pipe 7 are connected to form A communicating end, and the communicating end is communicated with one end of the branch pipe 31.

作为一种实施方式,所述冷却液管道3在分支点处分为若干子管道,所有子管道的另一端在汇聚点处合并为冷却液管道3,所述子管道外侧设置有冷却装置4。As an embodiment, the cooling liquid pipe 3 is divided into several sub-pipes at the branch point, the other ends of all the sub-pipes are merged into the cooling liquid pipe 3 at the converging point, and a cooling device 4 is provided outside the sub-pipes.

作为一种实施方式,所述冷却装置4为装有冷水的水箱。As an embodiment, the cooling device 4 is a water tank containing cold water.

作为一种实施方式,所述第一冷却液为水,所述第二冷却液为乙二醇。As an embodiment, the first cooling liquid is water, and the second cooling liquid is ethylene glycol.

本发明冷却液循环流程:The cooling liquid circulation process of the present invention:

第一冷却液通过第一冷却液输送管输入,第二冷却液通过第二冷却液输送管输入,第一冷却液与第二冷却液一同流向分支管,通过水泵提供的 压力,第一冷却液与第二冷却液相互混合为冷却液,冷却液流向钻套上的第一通孔,通过第一通孔流向钻身外部开设的第一环形槽内,再从第一环形槽流向进口,再流入冷却流道;冷却液在冷却流道内,由钻身流向钻体,由钻体流向钻尖,再由钻尖流向钻体,由钻体流向钻身,再流向出口,对整个钻头进行全面冷却,再从出口流入钻身外部开设的第二环形槽内,再从第二环形槽流向冷却液管道,在流动过程中,冷却液吸收钻头的热量;吸收了热量的冷却液再通过冷却液管道流向冷却装置,冷却装置吸收冷却液的热量,分支管上设置的单向阀门阻止冷却液流出,从冷却装置流出的冷却液将重新流向进口,完成一次循环;整个循环内的冷却液达到饱和后,第一冷却液输送管和第二冷却液输送管将停止输送第一冷却液和第二冷却液,混合冷却液在钻头和冷却液管道之间循环流动,持续冷却。The first cooling liquid is input through the first cooling liquid delivery pipe, and the second cooling liquid is input through the second cooling liquid delivery pipe. The first cooling liquid and the second cooling liquid flow to the branch pipe together. The pressure provided by the water pump is used for the first cooling liquid. Mixed with the second cooling liquid to form a cooling liquid, the cooling liquid flows to the first through hole on the drill sleeve, flows through the first through hole into the first annular groove opened outside the drill body, and then flows from the first annular groove to the inlet, and then Flows into the cooling channel; the cooling fluid in the cooling channel 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 flows to the outlet, and the entire drill bit is fully integrated Cool, and then flow into the second annular groove opened outside the drill body from the outlet, and then flow from the second annular groove to the coolant pipe. During the flow, the coolant absorbs the heat of the drill bit; the coolant that has absorbed the heat passes through the coolant again The pipeline flows to the cooling device, and the cooling device absorbs the heat of the cooling liquid. The one-way valve set on the branch pipe prevents the cooling liquid from flowing out. The cooling liquid flowing out of the cooling device will flow to the inlet again to complete a cycle; the cooling liquid in the entire cycle reaches saturation After that, the first coolant delivery pipe and the second coolant delivery pipe will stop transporting the first coolant and the second coolant, and the mixed coolant will circulate between the drill bit and the coolant pipe for continuous cooling.

以上所述为本发明最佳实施方式的举例,其中未详细述及的部分均为本领域普通技术人员的公知常识。本发明的保护范围以权利要求的内容为准,任何基于本发明的技术启示而进行的等效变换,也在本发明的保护范围之内。The above are examples of the best embodiments of the present invention, and the parts that are not mentioned in detail are common knowledge of those 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 enlightenment of the present invention is also within the protection scope of the present invention.

Claims (7)

一种具有循环冷却功能的钻头,其特征在于,包括钻头本体(1)、钻套(2)、冷却液管道(3)和冷却装置(4),所述钻头本体(1)由上到下依次包括钻柄(11)、钻身(12)、钻体(13)和钻尖(14),所述钻头本体(1)内部设置有冷却流道(5),所述冷却流道(5)为U形且下端延伸至钻尖(14)处,所述冷却流道(5)两侧分别设置有进口(51)和出口(52),所述进口(51)和出口(52)设置于钻身(12)两侧,所述进口(51)相对于出口(52)更靠近钻尖(14),所述钻身(12)的外侧包覆有钻套(2),所述钻套(2)上开设有第一通孔(21)和第二通孔(22),所述钻身(12)上开设有第一环形槽(15)和第二环形槽(16),所述第一环形槽(15)分别与进口(51)和第一通孔(21)连通,第二环形槽(16)分别与出口(52)和第二通孔(22)连通,所述第一环形槽(15)和第二环形槽(16)所在的平面与钻头的中轴线垂直,所述冷却液管道(3)一端与第二通孔(22)连接,所述冷却液管道(3)的另一端与分支管(31)的中部连通,所述分支管(31)一端第一通孔(21)连通,另一端与冷却液输送管连通,所述分支管(31)上还设置有设置有水泵(8),所述水泵(8)用于将冷却液输送至进口(51)内。A drill bit with circulating cooling function, which is characterized in that it comprises a drill body (1), a drill sleeve (2), a coolant pipe (3) and a cooling device (4). The drill body (1) moves from top to bottom It includes a drill shank (11), a drill body (12), a drill body (13) and a drill tip (14) in turn. The drill body (1) is provided with a cooling runner (5) inside, and the cooling runner (5) ) Is U-shaped and the lower end extends to the drill tip (14), the cooling channel (5) is provided with an inlet (51) and an outlet (52) on both sides, and the inlet (51) and the outlet (52) are provided On both sides of the drill body (12), the inlet (51) is closer to the drill point (14) relative to the outlet (52), and the outer side of the drill body (12) is covered with a drill sleeve (2), and the drill The sleeve (2) is provided with a first through hole (21) and a second through hole (22), and the drill body (12) is provided with a first annular groove (15) and a second annular groove (16), so The first annular groove (15) communicates with the inlet (51) and the first through hole (21), and the second annular groove (16) communicates with the outlet (52) and the second through hole (22), respectively. The plane on which an annular groove (15) and a second annular groove (16) are located is perpendicular to the central axis of the drill bit. One end of the coolant pipe (3) is connected to the second through hole (22), and the coolant pipe (3) is connected to the second through hole (22). The other end of the branch pipe (31) is in communication with the middle of the branch pipe (31), one end of the branch pipe (31) is in communication with the first through hole (21), and the other end is in communication with the coolant delivery pipe, and the branch pipe (31) is also provided A water pump (8) is provided, and the water pump (8) is used to deliver the cooling liquid to the inlet (51). 如权利要求1所述的具有循环冷却功能的钻头,其特征在于,所述冷却液管道(3)位于钻头外部的部位上设置有冷却装置(4)。The drill bit with circulating cooling function according to claim 1, characterized in that, a cooling device (4) is provided on a part of the coolant pipe (3) located outside the drill bit. 如权利要求1所述的具有循环冷却功能的钻头,其特征在于,所述分支管(31)和冷却液输送管之间设置有单向阀门(9),所述单向阀门(9)仅允许液体由冷却液输送管向分支管(31)单向输送。The drill bit with circulating cooling function according to claim 1, characterized in that, a one-way valve (9) is provided between the branch pipe (31) and the coolant delivery pipe, and the one-way valve (9) is only The liquid is allowed to be transported in one direction from the coolant delivery pipe to the branch pipe (31). 如权利要求1所述的具有循环冷却功能的钻头,其特征在于,所述冷却液输送管包括第一冷却液输送管(6)和第二冷却液输送管(7),所述第一冷却液输送管(6)和第二冷却液输送管(7)的一端连通形成连通端,且所述连通端与分支管(31)一端连通。The drill bit with circulating cooling function according to claim 1, characterized in that the cooling liquid delivery pipe includes a first cooling liquid delivery pipe (6) and a second cooling liquid delivery pipe (7), and the first cooling One end of the liquid conveying pipe (6) and the second cooling liquid conveying pipe (7) are communicated to form a communicating end, and the communicating end is communicated with one end of the branch pipe (31). 如权利要求1所述的具有循环冷却功能的钻头,其特征在于,所述冷却液管道(3)在分支点处分为若干子管道,所有子管道的另一端在汇聚点处合并为冷却液管道(3),所述子管道外侧设置有冷却装置(4)。The drill bit with circulating cooling function according to claim 1, characterized in that the cooling liquid pipe (3) is divided into several sub-pipes at the branch point, and the other end of all the sub-pipes merges into a cooling liquid pipe at the converging point. (3) A cooling device (4) is provided outside the sub-pipe. 如权利要求5所述的具有循环冷却功能的钻头,其特征在于,所述 冷却装置(4)为装有冷水的水箱。The drill bit with circulating cooling function according to claim 5, characterized in that the cooling device (4) is a water tank filled with cold water. 如权利要求4所述的具有循环冷却功能的钻头,其特征在于,所述第一冷却液为水,所述第二冷却液为乙二醇。The drill bit with circulating cooling function according to claim 4, wherein the first cooling liquid is water, and the second cooling liquid is ethylene glycol.
PCT/CN2020/106519 2019-08-28 2020-08-03 Drill bit with circulating cooling function Ceased WO2021036692A1 (en)

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