High-strength coating alloy drill bit

Abstract

The utility model discloses a high-strength coating alloy drill bit, which relates to the technical field of drill bits and comprises a shunting pipeline fixedly mounted at the bottom of a liquid inlet pipeline. The liquid supply assembly has two cooling modes for the drill bit body, one mode is an inner cooling mode, the heat dissipation and cooling effect is excellent, and no cooling dead angle exists, and the other mode is an outer cooling mode, when the phenomenon that cooling liquid is not discharged smoothly due to the fact that blockage occurs in a hole probably, the outer cooling mode can be triggered automatically, and the cooling effect is good. The phenomenon that cooling efficiency is reduced due to blockage in the hole is avoided, and the problems that cooling of an existing drill bit is of an outer cooling structure, the portion, located in the hole, of the drill bit cannot be well cooled and dissipated, cooling liquid cannot reach the bottommost portion in the hole, and the cooling effect is poor are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and more specifically, particularly relates to a high-strength coated alloy drill bit. Background Art

[0002] The drill bit is a drilling tool commonly used in mechanical processing. The drill bit can be used to drill holes on objects through high-speed rotation. The drill bit will generate heat during drilling, so it is necessary to spray coolant on the side of the drill bit to cool it down and ensure stable processing.

[0003] When the existing drill bit is in use, its cooling adopts an external cooling structure, that is, heat dissipation and temperature reduction are carried out by spraying coolant on the outside and sides. This method cannot effectively cool the part of the drill bit located in the hole, and the coolant may not reach the bottom of the hole. The heat dissipation and cooling effect is poor and the practicality is not high. Utility Model Content

[0004] The disclosed embodiment relates to a high-strength coated alloy drill bit, which has a liquid supply component. The liquid supply component has two cooling methods for the drill bit body. One is internal cooling, in which the coolant is transported inside the drill bit body, and the coolant can directly reach the bottom of the hole and finally be discharged from the hole through the blade groove. The heat dissipation and cooling effect is excellent, and there is no cooling dead angle. The second is external cooling. Since the blade groove also needs to undertake the chip removal operation (cutting waste generated during drilling), there is a probability that the hole will be blocked, resulting in poor coolant discharge. At this time, the external cooling method will be automatically triggered. In this method, the coolant will be redirected from the diversion pipe to the outside of the drill bit body to avoid the phenomenon that the coolant cannot be discharged from the hole in time due to blockage in the hole, which reduces the heat dissipation and cooling efficiency. The external cooling method is automatically controlled and triggered according to the drainage situation in the hole. It is convenient and flexible to use, ensures the stable processing, and also protects the drill bit from being damaged by high temperature. It has strong flexibility, stability and practicality.

[0005] In a first aspect, the present disclosure provides a high-strength coated alloy drill bit, comprising a drill bit body, wherein the exterior of the drill bit body is provided with a carbide coating, wherein common carbide coatings include carbide hard coatings, tungsten carbide coatings, etc., and the carbide coating can form a hard coating on the surface of the drill bit body, thereby improving the wear and thermal stability of the drill bit, and is suitable for processing cast iron, alloy steel and other materials; a liquid supply component, wherein the liquid supply component comprises a liquid cavity ring, a liquid inlet pipe, a shunt pipe and a control plugging ring, wherein the liquid cavity ring is rotatably connected to the top of the drill bit body, and the liquid inlet pipe is fixedly installed on the side of the liquid cavity ring, the shunt pipe is fixedly installed at the bottom of the liquid inlet pipe, and the control plugging ring is plugged into the inside of the shunt pipe, and the liquid inlet pipe is connected to the liquid supply device of the coolant through a hose.

[0006] In at least some embodiments, an inner cooling channel is provided inside the drill body, and a bottom opening of the inner cooling channel is provided at a cutting groove at the bottom of the drill body.

[0007] In at least some embodiments, an adaptable liquid cavity is provided inside the liquid cavity ring, and the adaptable liquid cavity is communicated with a liquid inlet pipeline.

[0008] In at least some embodiments, a top opening of the inner cooling channel is disposed at the adaptation liquid cavity.

[0009] In at least some embodiments, a pressure chamber is provided inside the diversion pipe, and the outer diameter of the control blocking ring is larger than the inner diameter of the top opening of the pressure chamber, and the outer diameter of the control blocking ring is smaller than the inner diameter of the pressure chamber.

[0010] In at least some embodiments, a shunt top spring is provided at the bottom of the control blocking ring, and two ends of the shunt top spring respectively abut against the bottom of the control blocking ring and the inside of the shunt pipe.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The liquid supply component has two cooling methods for the drill body. One is internal cooling. The coolant will be transported inside the drill body. The coolant can reach the bottom of the hole directly and finally be discharged from the hole through the blade groove. The heat dissipation and cooling effect is excellent, and there is no cooling dead corner. The second is external cooling. Since the blade groove also needs to undertake the chip removal operation (cutting waste generated during drilling), there is a probability that the hole will be blocked, resulting in poor coolant discharge. At this time, the external cooling method will be automatically triggered. In this method, the coolant will be redirected from the diversion pipe to the outside of the drill body to avoid blockage in the hole. The coolant cannot be discharged from the hole in time, which reduces the heat dissipation and cooling efficiency. The external cooling method is automatically controlled and triggered according to the drainage situation in the hole. It is convenient and flexible to use, ensuring the stable processing. At the same time, it also protects the drill bit from high temperature damage, improving the flexibility, stability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model after disassembly.

[0015] Figure 3 It is a schematic diagram of the flow structure of the internal coolant in the internal cooling type cooling mode of the utility model.

[0016] Figure 4 This utility model Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0017] Figure 5 It is a schematic diagram of the flow structure of the internal coolant when the external cooling method is used in the utility model.

[0018] Figure 6 This utility model Figure 5 Schematic diagram of the enlarged structure of part B in the middle.

[0019] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0020] 1. drill bit body; 101. internal cooling channel;

[0021] 2. Liquid supply assembly; 201. Liquid cavity ring; 2011. Adaptive liquid cavity; 202. Liquid inlet pipe; 203. Diverter pipe; 2031. Pressure chamber; 204. Control blocking ring; 2041. Diverter top spring. DETAILED DESCRIPTION

[0022] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0023] As attached Figure 1 To Attachment Figure 6 As shown:

[0024] Embodiment 1: The utility model provides a high-strength coated alloy drill bit, including a drill bit body 1, the outside of the drill bit body 1 is provided with a carbide coating, common carbide coatings include carbide hard coatings, tungsten carbide coatings, etc. The carbide coating can form a hard coating on the surface of the drill bit body 1, thereby improving the wear and thermal stability of the drill bit, and is suitable for processing cast iron, alloy steel and other materials; a liquid supply component 2, the liquid supply component 2 includes a liquid cavity ring 201, a liquid inlet pipe 202, a diverter pipe 203 and a control plugging ring 204, the liquid cavity ring 201 is rotatably connected to the top of the drill bit body 1, and the liquid inlet pipe 202 is fixedly installed on the side of the liquid cavity ring 201, the diverter pipe 203 is fixedly installed at the bottom of the liquid inlet pipe 202, and the control plugging ring 204 is plugged into the inside of the diverter pipe 203, and the liquid inlet pipe 202 is connected to the liquid supply device of the coolant through a hose.

[0025] In the disclosed embodiment, an internal cooling channel 101 is provided inside the drill body 1, and the bottom opening of the internal cooling channel 101 is arranged at the edge groove at the bottom of the drill body 1. During use, the liquid supply component 2 is in an internal cooling use / cooling mode when it is in the reset state (i.e., the coolant in the hole can be discharged smoothly). At this time, under the action of the diverter top spring 2041, the blocking ring 204 is controlled to block the top opening of the pressure chamber 2031, so that the coolant will enter the interior of the internal cooling channel 101 through the liquid inlet pipe 202 and the adaptive liquid chamber 2011. After the coolant is discharged from the bottom opening of the internal cooling channel 101, it will be discharged along the edge groove of the drill body 1 and the gap between the drill body 1 and the hole, so that the coolant can completely flow through the drill body 1, and the heat dissipation and cooling effect is excellent.

[0026] In the disclosed embodiment, an adaptive liquid chamber 2011 is provided inside the liquid chamber ring 201, and the adaptive liquid chamber 2011 is connected to the liquid inlet pipe 202, and the top opening of the inner cooling channel 101 is provided at the adaptive liquid chamber 2011. In use, the adaptive liquid chamber 2011 is an annular cavity, and the drill body 1 rotates independently from the liquid chamber ring 201 during processing. The adaptive liquid chamber 2011 of the annular cavity can stably supply coolant to the interior of the inner cooling channel 101 even when the drill body 1 rotates, and is stable to use.

[0027] In the embodiment of the present disclosure, a pressure chamber 2031 is provided inside the shunt pipe 203, the outer diameter of the control plugging ring 204 is larger than the inner diameter of the top opening of the pressure chamber 2031, and the outer diameter of the control plugging ring 204 is smaller than the inner diameter of the pressure chamber 2031, and a shunt top spring 2041 is provided at the bottom of the control plugging ring 204, and the two ends of the shunt top spring 2041 are respectively against the bottom of the control plugging ring 204 and the inside of the shunt pipe 203. In use, when drilling is performed, when the internal cooling use / cooling method is blocked by waste chips and the drainage is not smooth, the liquid supply component 2 will automatically trigger the external cooling use / cooling method. In other words, the external cooling use / cooling method is actually the protection function of the liquid supply component 2. When waste chips block the hole and the blade groove is not drained smoothly, the internal cooling channel 203 will be automatically triggered. The flow resistance inside the channel 101 increases. When supplying the coolant, the coolant will exert the supply pressure on the top of the control plugging ring 204 and use the pressure to move the control plugging ring 204 downward and compress the diverter top spring 2041. After moving downward, the control plugging ring 204 can release the blockage of the top opening of the pressure chamber 2031. Thereafter, the coolant will be sprayed to the outside of the drill body 1 through the liquid inlet pipe 202 and the diverter pipe 203, thereby realizing external auxiliary cooling operation. As the drilling operation proceeds, when the waste discharge in the hole is no longer blocked, the flow resistance inside the inner cooling channel 101 disappears, and the external cooling mode will automatically close under the action of the diverter top spring 2041. The two modes of use are completely based on the actual processing conditions to achieve automatic regulation and switching, with strong flexibility and adaptability.

[0028] The specific usage and function of this embodiment are as follows:

[0029] In the utility model, after the drilling device drives the drill body 1 to rotate at a high speed, the drill body 1 can be used to perform a drilling operation on an object. When the liquid supply component 2 is in the reset state (that is, the coolant in the hole can be discharged smoothly), it is in the internal cooling use / cooling mode. At this time, under the action of the shunt top spring 2041, the blocking ring 204 is controlled to block the top opening of the pressure chamber 2031, so that the coolant can enter the interior of the inner cooling channel 101 through the liquid inlet pipe 202 and the adaptable liquid chamber 211, and the coolant After being discharged from the bottom opening of the inner cooling channel 101, the coolant will be discharged along the edge groove of the drill body 1 and the gap between the drill body 1 and the hole, so that the coolant can completely flow through the drill body 1, and the heat dissipation and cooling effect is excellent. The adaptive liquid cavity 2011 is an annular cavity, and during processing, the drill body 1 rotates independently from the liquid cavity ring 201. The adaptive liquid cavity 2011 of the annular cavity can stably supply the coolant to the interior of the inner cooling channel 101 even when the drill body 1 rotates. When the drilling operation is performed, the use of the internal cooling type / Cooling mode When the drainage is not smooth due to waste chips blocking, the liquid supply component 2 will automatically trigger the external cooling use / cooling mode. In other words, the external cooling use / cooling mode is actually the protection function of the liquid supply component 2. When waste chips block the hole and the blade groove drains poorly, the flow resistance inside the inner cooling channel 101 increases. When supplying liquid, the coolant will apply the liquid supply pressure to the top of the control plugging ring 204 and use pressure to move the control plugging ring 204 downward and compress the diverter top spring 2041. After moving downward, the control plugging ring 204 can release the blockage of the top opening of the pressure chamber 2031. Thereafter, the coolant will be sprayed to the outside of the drill body 1 through the liquid inlet pipe 202 and the diverter pipe 203, thereby realizing external auxiliary cooling operation. As the drilling operation proceeds, when the discharge of waste chips in the hole is no longer blocked, the flow resistance inside the inner cooling channel 101 disappears, and the external cooling use mode will be automatically closed under the action of the diverter top spring 2041. The two use modes are completely automated and switched according to the actual processing conditions.

[0030] In another embodiment, the outer coating of the drill body 1 can be replaced with a titanium nitride coating. The titanium nitride coating is mainly composed of titanium nitride and titanium carbon nitride. The coating has high hardness and can improve the wear resistance and hardness of the drill bit. It is suitable for processing difficult-to-process materials such as stainless steel and titanium alloys. Through different coating settings, drilling operations on objects of different materials can be realized, further improving the flexibility and adaptability of the device.

[0031] In this article, there are a few points to note:

[0032] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0033] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0034] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A high-strength coated alloy drill bit, characterized in that: include: A drill body (1), wherein the exterior of the drill body (1) is provided with a carbide coating; and a liquid supply assembly (2), wherein the liquid supply assembly (2) comprises a liquid cavity ring (201), a liquid inlet pipe (202), a flow diversion pipe (203) and a control plugging ring (204), wherein the liquid cavity ring (201) is rotatably connected to the top of the drill body (1), and the liquid inlet pipe (202) is fixedly mounted on the side of the liquid cavity ring (201), and the flow diversion pipe (203) is fixedly mounted on the bottom of the liquid inlet pipe (202), and the control plugging ring (204) is plugged into the interior of the flow diversion pipe (203), and the liquid inlet pipe (202) is connected to a liquid supply device for cooling liquid via a hose.

2. A high-strength coated alloy drill bit as claimed in claim 1, characterized in that: An internal cooling channel (101) is provided inside the drill body (1), and the bottom opening of the internal cooling channel (101) is arranged at the edge groove at the bottom of the drill body (1).

3. A high-strength coated alloy drill bit as claimed in claim 2, characterized in that: An adaptable liquid cavity (2011) is provided inside the liquid cavity ring (201), and the adaptable liquid cavity (2011) is communicated with the liquid inlet pipeline (202).

4. A high-strength coated alloy drill bit as claimed in claim 3, characterized in that: The top opening of the inner cooling channel (101) is arranged at the adaptable liquid chamber (2011).

5. A high-strength coated alloy drill bit as claimed in claim 4, characterized in that: A pressure chamber (2031) is provided inside the diversion pipe (203), the outer diameter of the control blocking ring (204) is larger than the inner diameter of the top opening of the pressure chamber (2031), and the outer diameter of the control blocking ring (204) is smaller than the inner diameter of the pressure chamber (2031).

6. A high-strength coated alloy drill bit as claimed in claim 5, characterized in that: A flow-dividing top spring (2041) is provided at the bottom of the control blocking ring (204), and two ends of the flow-dividing top spring (2041) respectively abut against the bottom of the control blocking ring (204) and the inside of the flow-dividing pipe (203).

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