Alloy drill bit with efficient cooling function

Abstract

The utility model relates to the technical field of drill bits, and discloses an alloy drill bit with an efficient cooling function, which comprises a drill handle, a drill rod is arranged at the lower end of the drill handle, a chip groove is arranged on the outer side of the drill rod, a guide strip is arranged on the inner wall of the chip groove, a bottom blade is arranged at the lower end of the drill rod, and a water inlet hole is arranged at the upper end of the drill handle. According to the alloy drill bit with the efficient cooling function, the multiple drainage holes are formed, during drilling, the upper end of the drill handle is connected with an external cooling liquid pipe, cooling liquid is injected from the water inlet hole, discharged from the multiple drainage holes in the surface of the chip groove and guided by the guide strip to rapidly fall, the time needed for making contact with a bottom blade is shortened, and the cooling effect is improved; through the first annular groove and the second annular groove, cooling liquid can make better contact with the drill bit and the cutting area, and the cooling and lubricating effects are achieved. The temperature of the drill bit can be reduced, friction and abrasion are reduced, the service life of the drill bit is prolonged, the filter screen is arranged, cuttings are prevented from entering an internal pipeline from the drainage hole, and efficient cooling is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to an alloy drill bit with a high-efficiency cooling function. Background Art

[0002] Drill bits are tools used to make holes in various materials. They are commonly used in metal processing, woodworking, stone processing, concrete processing and other fields. Drill bits usually consist of a cutting part and a connecting part. The cutting part includes the blade and the tip, which is used to cut the workpiece, while the connecting part is used to connect to processing equipment such as drilling machines and handheld drills.

[0003] China Utility Model Patent Publication No.: CN 210359429 U, discloses: a drill bit that is easy to remove chips, wherein the drill bit that is easy to remove chips has a drill shank that is cut along the surface of the drill shank toward the drill body, so that the length of the drill body is shortened, and the bottom of the chip groove will be directly connected to the surface of the drill shank. During deep hole operation, under the centrifugal effect of the high-speed rotation of the drill bit, the chips are discharged from the deep hole along the chip groove in the direction of the drill shank, thereby avoiding the chips from being blocked in the chip groove and reducing the wear of the drill bit by the chips. However, the drill bit that is easy to remove chips has no cooling structure. After long-term use, high temperature will cause the tool material of the drill bit to soften or lose hardness, thereby aggravating tool wear and shortening the service life of the drill bit. Long-term use of a drill bit with too high a temperature may cause the tool to break or fail. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an alloy drill bit with a high-efficiency cooling function, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by the utility model is: an alloy drill bit with efficient cooling function, comprising a drill shank, a drill rod is arranged at the lower end of the drill shank, a chip groove is arranged on the outer side of the drill rod, a guide strip is arranged on the inner wall of the chip groove, a bottom blade is arranged on the lower end of the drill rod, a water inlet hole is arranged on the upper end of the drill shank, a drainage hole is arranged on the inner wall of the chip groove, and a filter is fixedly connected to the inside of the drainage hole.

[0006] Preferably, the bottom edge comprises a cutting edge, a chip groove, an annular groove 1 and an annular groove 2, two cutting edges are provided, a chip groove is provided between the two cutting edges, and annular groove 1 and annular groove 2 are provided on the surface of the cutting edge.

[0007] Through the above technical solution, a bottom blade is provided, which cooperates with the guide strip and the drainage hole to improve the cooling effect of the drill bit.

[0008] Preferably, the chip containing groove and the chip discharging groove are communicated with each other, and the water inlet hole and the water discharge hole are communicated with each other.

[0009] Through the above technical solution, multiple drainage holes are provided. When drilling, the upper end of the drill shank is connected to the external coolant pipe, the coolant is injected from the water inlet hole, and discharged from the multiple drainage holes on the surface of the chip groove, falling under the action of gravity, so as to cool the drill rod and the bottom blade, so that the drill bit remains stable during drilling and the cooling effect is good.

[0010] Preferably, the guide bar is in a strip-shaped structure, and the guide bar is arranged at the center of the chip removal groove.

[0011] Through the above technical solution, a guide bar is provided, and the guide bar cooperates with the chip removal groove, so that the chips are guided to move in a spiral along the guide bar and the chip removal groove, and the chip removal is smooth.

[0012] Preferably, the cross-section of the annular groove 1 is an arc-shaped structure, and the diameter of the annular groove 1 is greater than the diameter of the annular groove 2.

[0013] Through the above technical solution, the first and second ring grooves are set, which can effectively help discharge the chips and waste chips generated during the cutting process, prevent blockage and accumulation, and keep the cutting smooth, which is especially important for high-speed and deep hole drilling, and can improve the drilling efficiency and quality. Through the first and second ring grooves, the coolant can better contact the drill bit and the cutting area, providing cooling and lubrication effects. This helps to reduce the temperature of the drill bit, reduce friction and wear, and extend the life of the drill bit.

[0014] Preferably, two cutting edges are provided, and two guide strips are provided.

[0015] Through the above technical solution, two cutting edges and two guide strips are provided, and the chips generated by the cutting edges enter the chip discharge groove along the chip containing groove and are discharged upward along the guide strip.

[0016] Preferably, the drainage hole is arranged below the guide bar, and the filter screen is made of 316 stainless steel.

[0017] Through the above technical solution, a filter is set to prevent chips from entering the internal pipeline from the drain hole, maintaining efficient cooling. When the coolant is discharged from the drain hole, it falls quickly after being guided by the guide bar, shortening the time required for contact with the bottom blade and improving the cooling effect.

[0018] Compared with the prior art, the utility model provides an alloy drill bit with efficient cooling function, which has the following beneficial effects:

[0019] 1. The alloy drill bit with efficient cooling function is provided with multiple drainage holes. When drilling, the upper end of the drill shank is connected to an external coolant pipe, and the coolant is injected from the water inlet hole and discharged from the multiple drainage holes on the surface of the chip groove. After being guided by the guide bar, it falls quickly, shortening the time required for contact with the bottom blade and improving the cooling effect. Through the first and second ring grooves, the coolant can better contact the drill bit and the cutting area, providing cooling and lubrication effects, which helps to reduce the drill bit temperature, reduce friction and wear, and extend the life of the drill bit. A filter is set to prevent chips from entering the internal pipeline from the drainage holes to maintain efficient cooling;

[0020] 2. The alloy drill with efficient cooling function has a guide bar that cooperates with the chip groove. The chips are guided to move in a spiral along the guide bar and the chip groove, and the chip removal is smooth. Ring groove one and ring groove two are provided to effectively help discharge the chips and waste chips generated during the cutting process, prevent blockage and accumulation, and keep the cutting smooth, which is especially important for high-speed and deep hole drilling, and can improve the drilling efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0024] Figure 4 This is an enlarged structural diagram of the utility model Figure 1 ;

[0025] Figure 5 This is an enlarged structural diagram of the utility model Figure 2 .

[0026] Among them: 1. drill handle; 2. drill rod; 3. chip groove; 4. guide strip; 5. bottom blade; 501. cutting edge; 502. chip groove; 503. ring groove 1; 504. ring groove 2; 6. water inlet hole; 7. drainage hole; 8. filter screen. DETAILED DESCRIPTION

[0027] 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.

[0028] Embodiment 1: Figure 1-5 As shown, the utility model provides an alloy drill bit with efficient cooling function, including a drill shank 1, a drill rod 2 is arranged at the lower end of the drill shank 1, a chip groove 3 is opened on the outer side of the drill rod 2, a guide strip 4 is arranged on the inner wall of the chip groove 3, a bottom blade 5 is arranged on the lower end of the drill rod 2, a water inlet hole 6 is opened on the upper end of the drill shank 1, a drainage hole 7 is opened on the inner wall of the chip groove 3, and a filter screen 8 is fixedly connected to the inside of the drainage hole 7.

[0029] Specifically, the bottom blade 5 includes a cutting edge 501, a chip groove 502, a first annular groove 503 and a second annular groove 504. Two cutting edges 501 are provided, a chip groove 502 is provided between the two cutting edges 501, and a first annular groove 503 and a second annular groove 504 are provided on the surface of the cutting edge 501. The bottom blade 5 is provided, and cooperates with the guide strip 4 and the drainage hole 7 to improve the cooling effect of the drill bit.

[0030] Specifically, the chip groove 502 is interconnected with the chip groove 3, and the water inlet hole 6 is interconnected with the drainage hole 7. The advantage is that there are multiple drainage holes 7. When drilling, the upper end of the drill shank 1 is connected to an external coolant pipe, and the coolant is injected from the water inlet hole 6 and discharged from the multiple drainage holes 7 on the surface of the chip groove 3. It falls under the action of gravity, cools the drill rod 2 and the bottom blade 5, keeps the drill bit stable during drilling, and has a good cooling effect.

[0031] Specifically, the guide bar 4 is in a strip-shaped structure, and the guide bar 4 is arranged at the center of the chip removal groove 3. The advantage is that the guide bar 4 is arranged, the guide bar 4 cooperates with the chip removal groove 3, and the chips are guided to move along the guide bar 4 and the chip removal groove 3 in a spiral manner, and the chips are removed smoothly.

[0032] Embodiment 2: Figure 2-5 As shown, as an improvement to the previous embodiment.

[0033] Specifically, the cross section of the annular groove 1 503 is an arc-shaped structure, and the diameter of the annular groove 1 503 is greater than the diameter of the annular groove 2 504. The advantage is that the annular groove 1 503 and the annular groove 2 504 are provided, which can effectively help discharge the chips and waste chips generated during the cutting process, prevent blockage and accumulation, and keep the cutting smooth, which is especially important for high-speed and deep hole drilling, and can improve the drilling efficiency and quality. Through the annular groove 1 503 and the annular groove 2 504, the coolant can better contact the drill bit and the cutting area, providing cooling and lubrication effects. This helps to reduce the temperature of the drill bit, reduce friction and wear, and extend the life of the drill bit.

[0034] Specifically, two cutting edges 501 are provided, and two guide bars 4 are provided. The advantage is that two cutting edges 501 and two guide bars 4 are provided, and the chips generated by the cutting edges 501 enter the chip groove 3 along the chip groove 502 and are discharged upward along the guide bars 4.

[0035] Specifically, the drain hole 7 is arranged below the guide bar 4, and the filter screen 8 is made of 316 stainless steel. The advantage is that the filter screen 8 is arranged to prevent chips from entering the internal pipeline from the drain hole 7, and maintain efficient cooling. When the coolant is discharged from the drain hole 7, it falls quickly after being guided by the guide bar 4, shortening the time required for contact with the bottom blade 5, and improving the cooling effect.

[0036] Working principle: When drilling, the upper end of the drill handle 1 is connected to an external coolant pipe, the coolant is injected from the water inlet hole 6, and discharged from the multiple drainage holes 7 on the surface of the chip groove 3. After being guided by the guide bar 4, it falls quickly, shortening the time required for contact with the bottom blade 5 and improving the cooling effect. Through the ring groove 1 503 and the ring groove 2 504, the coolant can better contact the drill bit and the cutting area, providing cooling and lubrication effects. This helps to reduce the temperature of the drill bit, reduce friction and wear, and extend the life of the drill bit. The filter 8 prevents chips from entering the internal pipeline from the drainage hole 7 to maintain efficient cooling. The guide bar 4 cooperates with the chip groove 3, and the chips are guided to move in a spiral along the guide bar 4 and the chip groove 3, and the chip removal is smooth. The ring groove 1 503 and the ring groove 2 504 are set, which can effectively help discharge the chips and waste chips generated during the cutting process, prevent blockage and accumulation, and keep the cutting smooth, which is especially important for high-speed and deep hole drilling, and can improve drilling efficiency and quality.

[0037] 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. An alloy drill bit with efficient cooling function, comprising a drill shank (1), characterized in that: A drill rod (2) is arranged at the lower end of the drill shank (1), a chip groove (3) is arranged on the outer side of the drill rod (2), a guide strip (4) is arranged on the inner wall of the chip groove (3), a bottom blade (5) is arranged at the lower end of the drill rod (2), a water inlet hole (6) is arranged at the upper end of the drill shank (1), a drainage hole (7) is arranged on the inner wall of the chip groove (3), and a filter screen (8) is fixedly connected inside the drainage hole (7).

2. The alloy drill bit with efficient cooling function according to claim 1, characterized in that: The bottom blade (5) comprises a cutting edge (501), a chip groove (502), a first annular groove (503) and a second annular groove (504); two cutting edges (501) are provided, a chip groove (502) is provided between the two cutting edges (501), and a first annular groove (503) and a second annular groove (504) are provided on the surface of the cutting edge (501).

3. The alloy drill bit with efficient cooling function according to claim 2, characterized in that: The chip containing groove (502) and the chip discharging groove (3) are in communication with each other, and the water inlet hole (6) and the water discharge hole (7) are in communication with each other.

4. The alloy drill bit with efficient cooling function according to claim 3, characterized in that: The guide bar (4) is in a strip-shaped structure and is arranged at the center of the chip removal groove (3).

5. The alloy drill bit with efficient cooling function according to claim 4, characterized in that: The cross section of the annular groove 1 (503) is an arc-shaped structure, and the diameter of the annular groove 1 (503) is greater than the diameter of the annular groove 2 (504).

6. The alloy drill bit with efficient cooling function according to claim 5, characterized in that: The number of the cutting edges (501) is two, and the number of the guide strips (4) is two.

7. The alloy drill bit with efficient cooling function according to claim 6, characterized in that: The drainage hole (7) is arranged below the guide bar (4), and the filter screen (8) is made of 316 stainless steel.

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