Heat dissipation cutter body of PCD cutter

Abstract

The utility model discloses a PCD cutter heat dissipation cutter body which comprises a cutter body, the upper end of the cutter body is fixedly connected with an installation base, a spiral groove is formed in the outer side of the lower end of the cutter body, a cooling cavity is formed in the cutter body, and a discharging cavity is formed in the upper end of the interior of the cutter body. And an exhaust hole capable of exhausting heat gas is formed between the side of the exhaust cavity and the knife body. According to the heat dissipation cutter body of the PCD cutter, after the cutter body rotates, heat generated by friction can be gathered in the cooling cavity, at the moment, the heat is continuously gathered, can be gradually gathered into the air supply cavity through the cooling cavity and enters the communicating cavity through the air supply cavity, and at the moment, heat in the communicating cavity can be gathered into the discharging cavity, so that the heat dissipation effect of the PCD cutter is improved. And the heat is discharged outwards through the exhaust hole formed in the side end of the discharge cavity, so that the phenomenon that the service life of the cutter body is shortened due to the fact that the heat is gathered on the cutter body can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PCD tool, in particular to a heat dissipation blade body of a PCD tool. Background Art

[0002] PCD tools are also called polycrystalline diamond engraving tools. PCD tools have high hardness, high compressive strength, good toughness, and are not easy to break. They are suitable for processing various complex materials. PCD tools occupy an important position in the cutting industry with their excellent performance and wide application fields. However, the existing PCD tools still have defects and deficiencies in some aspects that need to be improved:

[0003] For example, the application number is CN202321254794.5, which is a PCD forming milling cutter that optimizes the tool structure strength and improves the anti-collapse performance, including a tungsten steel milling cutter body, wherein the front end outer surface of the tungsten steel milling cutter body is provided with four milling cutter grooves, and the front end of the tungsten steel milling cutter body is provided with a cutter pit groove, and a PCD blade is welded on the inner side of the cutter pit groove, and the cutting surface of the PCD blade is a first back angle and a second back angle, and the front end face of the tungsten steel milling cutter body is arranged in a swastika shape, and the first back angle and the second back angle are both auxiliary cutting surfaces, and the auxiliary cutting surface is smoothly connected with the milling cutter groove, and the front end face of the PCD blade is 0.03-0.1mm higher than the front end face of the tungsten steel milling cutter body. The tungsten steel milling cutter body and the PCD blade are brazed together to increase the cutting strength and service life of the cutter body. The PCD and tungsten steel cutter body are cut together through the two-back angle wire-cutting process to maximize the support strength and enhance the anti-collapse performance, thereby avoiding the situation where the tip of the cutter is easily broken during milling.

[0004] When the PCD tool is performing a high-speed rotational cutting operation, the drill bit will generate a lot of heat due to friction. The existing PCD tool is unable to dissipate the heat generated by the drill bit during operation. The heat accumulates in the drill bit for a long time, which will reduce the service life of the drill bit to a certain extent. There are certain limitations.

[0005] Therefore, we propose a PCD tool heat dissipation blade body to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a PCD tool heat dissipation blade body to solve the problem in the above background technology that the heat generated at the drill bit cannot be dissipated, and the heat accumulates at the drill bit for a long time, which will reduce the service life of the drill bit to a certain extent.

[0007] To achieve the above object, the utility model provides the following technical solution: a PCD tool heat dissipation blade, comprising a blade body, the upper end of the blade body is fixedly connected to a mounting seat, and the outer side of the lower end of the blade body is provided with a spiral groove;

[0008] A cooling cavity is provided inside the blade body, and a discharge cavity is provided at the upper end of the blade body, and an exhaust hole for discharging hot gas is provided between the side of the discharge cavity and the blade body;

[0009] The air inlet hole is provided on the blade body, and an air supply cavity is provided between the inner section of the air inlet hole and the inside of the blade body, and a heat dissipation mechanism for accelerating heat dissipation is provided between the air inlet hole and the outer side of the blade body.

[0010] Furthermore, a connecting cavity is formed through the lower end of the discharge cavity, and the lower end of the connecting cavity is formed through the upper end of the air supply cavity, and the lower end of the air supply cavity is formed through and connected to the top end of the cooling cavity.

[0011] Furthermore, the lower end of the cooling cavity extends to the bottom of the spiral groove, and the cooling cavity is connected with the discharge cavity through the air supply cavity and the connecting cavity.

[0012] Furthermore, the connecting cavity and the cooling cavity are both cylindrical, and the diameter of the connecting cavity is smaller than the maximum value of the diameter of the cooling cavity.

[0013] Furthermore, the heat dissipation mechanism includes a storage groove, which is opened on the outer side of the blade body, and a limiting groove is opened on the blade body, and the inner part of the limiting groove is nested and connected with a limiting rod, the outer end of the limiting rod is fixedly connected with a baffle, and a return spring is fixedly connected between the inner side of the baffle and the outer side of the limiting groove.

[0014] Furthermore, four receiving grooves are provided in a ring-shaped array about the center point of the blade body, and the center point of the receiving groove coincides with the center point of the outer end of the air inlet hole.

[0015] Furthermore, the baffle plate forms a sliding structure with the receiving groove through the return spring, the limiting rod forms a sliding structure with the baffle plate and the limiting groove, and the length of the limiting groove is greater than the maximum value of the length of the limiting rod.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. After the blade body rotates, the heat generated by friction will accumulate inside the cooling cavity. At this time, the heat will continue to accumulate and gradually accumulate inside the discharge cavity through the cooling cavity, and be discharged outward through the exhaust hole opened at the side end of the discharge cavity. At this time, the heat accumulation in the blade body can be reduced, which reduces the service life of the blade body;

[0018] 2. The double-layer design of the air supply cavity and the exhaust cavity expands the space for heat accumulation to a certain extent, so that the heat generated by the friction of the blade body is dispersed, thereby further reducing the possibility of heat accumulation inside the cooling cavity;

[0019] 3. There are four exhaust holes designed with different directions, which further improves the heat dissipation efficiency of the blade body;

[0020] 4. When the blade body rotates at high speed, the baffle will rotate outward under the action of centrifugal force. At this time, the baffle moves outward and leaves the storage slot under the limiting action of the limiting rod. The baffle does not block the air inlet hole, and the external gas can enter the cooling chamber through the air inlet hole, further accelerating the heat exchange inside the cooling chamber and improving the heat dissipation efficiency of the blade body;

[0021] 5. When the rotation speed of the blade body drops to a small level, the centrifugal force on the baffle is reduced. At this time, the baffle will reset to block the air inlet, reducing the number of holes on the outside of the blade body and preventing dust from entering the inside of the blade body through the holes during cutting operations, affecting subsequent heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the cutaway three-dimensional structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the cutaway three-dimensional structure of the exhaust hole of the utility model;

[0025] Figure 4 This is a schematic diagram of the cutaway three-dimensional structure of the air supply cavity of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the baffle of the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the limit rod of the utility model.

[0028] In the figure: 1. Blade body; 2. Mounting seat; 3. Exhaust hole; 4. Cooling chamber; 5. Air supply chamber; 6. Connecting chamber; 7. Discharge chamber; 8. Air inlet hole; 9. Baffle; 10. Storage groove; 11. Limit rod; 12. Limit groove; 13. Reset spring; 14. Spiral groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1: Figure 1 and Figure 6 The technical solution shown in the figure, the utility model provides the following technical solution: a PCD tool heat dissipation blade body, a baffle plate 9 is disclosed, and the baffle plate 9 can reduce the dust from the hole into the interior of the blade body 1:

[0031] A blade body 1, the upper end of which is fixedly connected to a mounting seat 2, and a spiral groove 14 is formed on the outer side of the lower end of the blade body 1;

[0032] The lower end of the discharge chamber 7 is penetrated by a connecting chamber 6, and the lower end of the connecting chamber 6 is penetrated to the upper end of the air supply chamber 5, and the lower end of the air supply chamber 5 is penetrated and connected to the top end of the cooling chamber 4;

[0033] When the rotation speed of the blade body 1 decreases slightly, the centrifugal force on the baffle 9 decreases. At this time, the baffle 9 will be reset under the driving force of the elastic force of the reset spring 13, and the baffle 9 will be engaged into the interior of the storage groove 10. At this time, the baffle 9 can block the air inlet 8, reducing the number of holes on the outside of the blade body 1, preventing dust from entering the interior of the blade body 1 through the holes during cutting operations, thereby affecting the subsequent heat dissipation.

[0034] Embodiment 2: Figure 2 and Figure 3 The technical solution shown in the figure, the utility model provides the following technical solution: a PCD tool heat dissipation blade body, discloses an exhaust hole 3, through which the heat accumulated in the blade body 1 can be discharged:

[0035] A cooling chamber 4 is provided inside the blade body 1, and a discharge chamber 7 is provided at the upper end of the blade body 1, and an exhaust hole 3 for discharging hot gas is provided between the side of the discharge chamber 7 and the blade body 1;

[0036] The lower end of the cooling chamber 4 extends to the bottom of the spiral groove 14, and the cooling chamber 4 is connected to the discharge chamber 7 through the air supply chamber 5 and the connecting chamber 6. The connecting chamber 6 and the cooling chamber 4 are both cylindrical, and the diameter of the connecting chamber 6 is smaller than the maximum diameter of the cooling chamber 4.

[0037] After the blade body 1 rotates, the heat generated by friction will gather inside the cooling chamber 4. At this time, the heat continues to gather and can gradually gather into the air supply chamber 5 through the cooling chamber 4, and enter into the connecting chamber 6 through the air supply chamber 5. At this time, the heat inside the connecting chamber 6 can be gathered into the discharge chamber 7 and discharged outward through the exhaust hole 3 opened at the side end of the discharge chamber 7. At this time, the heat accumulation in the blade body 1 can be reduced, which will reduce the service life of the blade body 1. The double-layer cavity design of the air supply chamber 5 and the discharge chamber 7 expands the space for heat accumulation to a certain extent, so that the heat generated by friction in the blade body 1 is dispersed, thereby further reducing the possibility of heat accumulation in the cooling chamber 4.

[0038] Embodiment 3: Figure 4 , Figure 5 and Figure 6 The technical solution shown in the figure, the utility model provides the following technical solution: a PCD tool heat dissipation blade, discloses a heat dissipation mechanism, through which the heat dissipation efficiency of the blade body 1 can be accelerated:

[0039] An air inlet 8 is provided on the blade body 1, and an air supply cavity 5 is provided between the inner section of the air inlet 8 and the inside of the blade body 1, and a heat dissipation mechanism is provided between the air inlet 8 and the outer side of the blade body 1 to accelerate heat dissipation;

[0040] The heat dissipation mechanism includes a storage groove 10, which is opened on the outer side of the blade body 1, and a limiting groove 12 is opened on the blade body 1, and the limiting groove 12 is nested and connected with a limiting rod 11, the outer end of the limiting rod 11 is fixedly connected with a baffle 9, and a return spring 13 is fixedly connected between the inner side of the baffle 9 and the outer side of the limiting groove 12, four storage grooves 10 are opened in a ring array about the center point of the blade body 1, and the center point of the storage groove 10 coincides with the center point of the outer end of the air inlet 8, the baffle 9 and the storage groove 10 form a sliding structure through the return spring 13, the limiting rod 11 and the limiting groove 12 form a sliding structure, and the length of the limiting groove 12 is greater than the maximum value of the length of the limiting rod 11.

[0041] When the blade body 1 rotates at high speed, the baffle 9 will rotate outward under the action of centrifugal force, and at this time will synchronously drive the limiting rod 11 to move within the limiting groove 12. The baffle 9 moves outward and leaves the storage groove 10 under the limiting action of the limiting rod 11. At this time, the baffle 9 does not block the air inlet 8, and the external gas can enter the cooling chamber 4 through the air inlet 8, further accelerating the heat exchange inside the cooling chamber 4 and improving the heat dissipation efficiency of the blade body 1.

[0042] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCD tool heat dissipation blade, comprising a blade body (1), wherein the upper end of the blade body (1) is fixedly connected to a mounting seat (2), and a spiral groove (14) is provided on the outer side of the lower end of the blade body (1); Features: Also includes: A cooling cavity (4), wherein the cooling cavity (4) is provided inside the blade body (1), and a discharge cavity (7) is provided at the upper end of the inner part of the blade body (1), and an exhaust hole (3) for exhausting hot gas is provided between the side of the exhaust cavity (7) and the blade body (1); An air inlet (8) is provided on the blade body (1), an air supply cavity (5) is provided between the inner section of the air inlet (8) and the interior of the blade body (1), and a heat dissipation mechanism for accelerating heat dissipation is provided between the air inlet (8) and the outer side of the blade body (1).

2. A PCD tool heat dissipation blade body according to claim 1, characterized in that: The lower end of the discharge chamber (7) is penetrated by a connecting chamber (6), and the lower end of the connecting chamber (6) is penetrated to the upper end of the air supply chamber (5), and the lower end of the air supply chamber (5) is penetrated and connected to the top end of the cooling chamber (4).

3. A PCD tool heat dissipation blade body according to claim 2, characterized in that: The lower end of the cooling chamber (4) extends to the bottom of the spiral groove (14), and the cooling chamber (4) is connected to the discharge chamber (7) through the air supply chamber (5) and the connecting chamber (6).

4. The PCD tool heat dissipation blade body according to claim 2, characterized in that: The connecting cavity (6) and the cooling cavity (4) are both cylindrical, and the diameter of the connecting cavity (6) is smaller than the maximum value of the diameter of the cooling cavity (4).

5. The PCD tool heat dissipation blade body according to claim 1, characterized in that: The heat dissipation mechanism comprises a receiving groove (10), the receiving groove (10) is arranged on the outer side of the blade body (1), a limiting groove (12) is arranged on the blade body (1), and a limiting rod (11) is nested inside the limiting groove (12), a baffle (9) is fixedly connected to the outer end of the limiting rod (11), and a return spring (13) is fixedly connected between the inner side of the baffle (9) and the outer side of the limiting groove (12).

6. A PCD tool heat dissipation blade body according to claim 5, characterized in that: The receiving grooves (10) are provided with four ring-shaped arrays about the center point of the blade body (1), and the center point of the receiving groove (10) coincides with the center point of the outer end of the air inlet hole (8).

7. The PCD tool heat dissipation blade body according to claim 5, characterized in that: The baffle plate (9) forms a sliding structure with the receiving groove (10) through the return spring (13), and the limiting rod (11) forms a sliding structure with the baffle plate (9) and the limiting groove (12), and the length of the limiting groove (12) is greater than the maximum value of the length of the limiting rod (11).

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