Self-cooling cutting drill bit

Abstract

The utility model is applied to the field of cutting drill bits, in particular to a self-cooling cutting drill bit which comprises a drill bit body, the drill bit body comprises a cutting end and a liquid inlet end, a liquid storage cylinder is sleeved on the periphery of a connecting end of the drill bit body, and a liquid storage cavity for storing liquid is arranged inside the liquid storage cylinder. The cutting end and the liquid inlet end are both internally provided with communicated heat dissipation grooves, the liquid inlet end is further provided with a liquid inlet hole, the liquid inlet hole is communicated with the heat dissipation grooves, and one end of each heat dissipation groove is open. Therefore, the internal heat dissipation capability of the drill bit body is enhanced, and the self-cooling efficiency of the drill bit body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting drill bits, in particular to a self-cooling cutting drill bit. Background Art

[0002] During the machining process, only the cutting part of the cutting tool is involved in cutting, and the clamping handle does not participate in cutting. In order to avoid the entire cutting tool being scrapped due to damage to the cutting part and to extend the service life of the cutting tool, the cutting part and the clamping handle of the cutting tool are usually set separately, that is, the cutting part and the clamping handle are connected by ordinary threads or other means to achieve repeated loading and unloading of the cutting part on the clamping handle.

[0003] In the prior art, when cooling a working cutting drill bit, the purpose of cooling is achieved by spraying coolant or cold air on the drill bit, but the interior of the cutting drill bit cannot be quickly cooled. Utility Model Content

[0004] The utility model aims to provide a self-cooling cutting drill bit to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-cooling cutting drill bit, comprising a drill bit body, the drill bit body comprising a cutting end and a liquid inlet end, the outer periphery of the drill bit body is sleeved with a liquid storage cylinder, the interior of the liquid storage cylinder is provided with a liquid storage cavity for storing liquid, the interiors of the cutting end and the liquid inlet end are both provided with interconnected heat dissipation grooves, the liquid inlet end is also provided with a liquid inlet hole, the liquid inlet hole is connected to the heat dissipation groove, and one end of the heat dissipation groove is an opening.

[0006] Preferably, the drill body further comprises a connecting end, and a thread for threaded connection is arranged on the outer periphery of the connecting end.

[0007] Preferably, one side of the liquid storage cylinder is connected to a liquid outlet pipe for discharging the coolant, the liquid outlet pipe is communicated with the liquid storage cavity, and the number of the liquid outlet pipes is at least two.

[0008] Preferably, the cutting end is provided with a chip groove, the liquid outlet of the liquid outlet pipe is directly opposite to the cutting end, and the number of the chip grooves corresponds to the number of the liquid outlet pipes.

[0009] Preferably, the liquid outlet pipe is made of a stainless steel hose.

[0010] Preferably, both sides of the fluid storage cylinder are connected to the drill body through sealed bearings, the inner rings of the two sealed bearings are sealed to the outer periphery of the drill body, and the outer rings of the two sealed bearings are sealed to the outer periphery of the fluid storage cylinder.

[0011] Preferably, a liquid inlet pipe facilitating the entry of liquid is provided on the other side of the liquid storage cylinder, and the liquid inlet pipe communicates with the liquid storage cavity.

[0012] Preferably, the drill bit body is made of cemented carbide.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. A self-cooling cutting drill bit, comprising a drill bit body, the drill bit body includes a cutting end and a liquid inlet end, a liquid storage cylinder is sleeved on the outer periphery of the drill bit body at the connection end, a liquid storage cavity for storing liquid is provided inside the liquid storage cylinder, heat dissipation grooves communicating with each other are provided inside both the cutting end and the liquid inlet end, a liquid inlet hole is further provided at the liquid inlet end, and the liquid inlet hole communicates with the heat dissipation groove. One end of the heat dissipation groove is an opening. During use, after the coolant enters the liquid storage cavity, it flows into the heat dissipation groove through the liquid inlet hole. After directly absorbing heat inside the drill bit body of the cutting drill bit, the coolant flows out from the opening at the cutting end to cool the cutting piece, enhancing the internal heat dissipation capacity of the drill bit body of the present utility model and improving the self-cooling efficiency of the drill bit body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the internal structure of the present utility model;

[0017] In the figure: drill bit body 1, cutting end 11, chip flute 111, heat dissipation groove 112, liquid inlet end 12, liquid inlet hole 121, connection end 13, cooling group 2, liquid storage cylinder 21, liquid storage cavity 22, liquid inlet pipe 23, liquid outlet pipe 3, sealed bearing 4. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. are based on the attached Figure 2The orientation or positional relationship shown is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] As Figures 1 to 2 As shown, a self-cooling cutting drill bit in this embodiment includes a drill bit body 1. The drill bit body 1 includes a cutting end 11 and a liquid inlet end 12. A liquid storage cylinder 21 is sleeved on the outer periphery of the drill bit body 1. A liquid storage cavity 22 for storing liquid is provided inside the liquid storage cylinder 21. Cooling grooves 112 that are connected and communicate are provided inside both the cutting end 11 and the liquid inlet end 12. The liquid inlet end 12 is further provided with a liquid inlet hole 121, and the liquid inlet hole 121 is connected and communicates with the cooling groove 112. One end of the cooling groove 112 is an opening. During use, after the coolant enters the liquid storage cavity 22, it flows into the cooling groove 112 through the liquid inlet hole 121. After the coolant directly absorbs heat from the inside of the cutting drill bit body 1, it flows out from the opening of the cutting end 11 to cool the cutting piece, enhancing the internal heat dissipation capacity of the drill bit body 1 of the present utility model and improving the self-cooling efficiency of the drill bit body 1.

[0022] Furthermore, the drill bit body 1 further includes a connection end 13. Threads for threaded connection are provided on the outer periphery of the connection end 13, and the drill bit body 1 is threadedly connected to the clamping part of the existing chip removal equipment through the threads.

[0023] Further, one side of the liquid storage cylinder 21 is connected with a liquid outlet pipe 3 for the coolant to flow out. The liquid outlet pipe 3 is communicated with the liquid storage cavity 22. The number of the liquid outlet pipes 3 is at least two. The cutting end 11 is provided with a chip groove 111. The liquid outlet of the liquid outlet pipe 3 faces the cutting end 11. The number of the chip grooves 111 corresponds to the number of the liquid outlet pipes 3 one by one. When the drill bit body 1 works, the liquid outlet pipe 3 can always face the chip groove 111. The coolant output by the liquid outlet pipe 3 can move along the chip groove 111 to the front end of the drill bit body 1 and be distributed in the area where the drill bit blade contacts the cutting piece, so as to achieve a better cooling effect. Further, the liquid outlet pipe is made of a stainless steel flexible pipe, and the stainless steel flexible pipe itself has good flexibility to realize the angle adjustment of the liquid outlet.

[0024] Further, both sides of the liquid storage cylinder 21 are respectively connected with the drill bit body 1 through a sealed bearing 4. The inner rings of the two sealed bearings 4 are hermetically connected to the outer periphery of the drill bit body 1, and the outer rings of the two sealed bearings 4 are hermetically connected to the outer periphery of the liquid storage cylinder 21. The inner ring and the outer ring of the sealed bearing 4 are respectively hermetically connected to the drill bit body 1 and the liquid storage cylinder 21, which improves the airtightness of the liquid storage cylinder 21 and the drill bit body 1 and avoids the leakage of the coolant.

[0025] Further, the other side of the liquid storage cylinder 21 is provided with a liquid inlet pipe 23 for facilitating the entry of liquid. The liquid inlet pipe 23 is communicated with the liquid storage cavity 22. During use, the drill bit body 1 and the liquid storage cylinder 21 move relative to each other through the sealed bearing, which improves the convenience of liquid inlet.

[0026] Further, the drill bit body 1 is made of hard alloy, and the hard alloy itself has good hardness, wear resistance, strength and toughness, which avoids the deformation of the drill bit body 1 during the cutting work and thus affects the processing efficiency and processing accuracy.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cooling cutting drill bit, comprising a drill bit body, characterized in that: The drill bit body includes a cutting end and a liquid inlet end. A liquid storage cylinder is sleeved on the outer periphery of the drill bit body. A liquid storage cavity for storing liquid is provided inside the liquid storage cylinder. Cooling grooves that are connected and communicate with each other are provided inside both the cutting end and the liquid inlet end. The liquid inlet end is further provided with a liquid inlet hole, and the liquid inlet hole is connected and communicates with the cooling grooves. One end of the cooling grooves is an opening.

2. The self-cooling cutting drill bit according to claim 1, characterized in that: The drill bit body further includes a connection end, and a thread for threaded connection is provided on the outer periphery of the connection end.

3. The self-cooling cutting drill bit according to claim 1, characterized in that: One side of the liquid storage cylinder is connected with a liquid outlet pipe for discharging coolant, and the liquid outlet pipe is connected and communicates with the liquid storage cavity. The number of the liquid outlet pipes is at least two.

4. The self-cooling cutting drill bit according to claim 3, characterized in that: The cutting end is provided with chip flutes, the liquid outlet of the liquid outlet pipe is facing the cutting end, and the number of the chip flutes corresponds to the number of the liquid outlet pipes one by one.

5. The self-cooling cutting drill bit according to claim 3, characterized in that: The liquid outlet pipe is made of a stainless steel hose.

6. The self-cooling cutting drill bit according to claim 1, wherein: Both sides of the liquid storage cylinder are respectively connected to the drill bit body through sealed bearings. The inner rings of the two sealed bearings are both sealed and connected to the outer periphery of the drill bit body, and the outer rings of the two sealed bearings are both sealed and connected to the outer periphery of the liquid storage cylinder.

7. The self-cooling cutting drill bit according to claim 1, characterized in that: The other side of the liquid storage cylinder is provided with a liquid inlet pipe for facilitating the entry of liquid, and the liquid inlet pipe is connected and communicates with the liquid storage cavity.

8. A self-cooling cutting drill bit according to claim 1, characterized in that: The drill bit body is made of cemented carbide.

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