Deep hole drill bit with high linear drilling direction stability

Abstract

The utility model discloses a deep hole drill bit with high linear drilling direction stability, and relates to the field of deep hole drill bits, the deep hole drill bit with high linear drilling direction stability is provided with a scrap guide piece, and one end, far away from a drill handle, of the scrap guide piece is arranged in a twisting shape forming an included angle with the horizontal plane, so that in the drilling process, after scraps are separated from a deep hole, the scrap guide piece is separated from the deep hole; the drill bit continuously rotates to drive the chipping guiding piece to rotate, so that air flow is continuously disturbed and blown to the deep hole, then counter-acting force can be applied to chippings, power for rapid splashing of the chippings is offset, the chippings cannot be rapidly splashed to the face, meanwhile, the chipping guiding piece can be used for guiding the chippings to be diffused in the circumferential direction of the drill bit, and therefore the chippings are prevented from being splashed to the face. And chippings are further prevented from splashing to the human face, the safety of workers during drilling work is improved, and meanwhile the influence of the chippings on the drilling work is reduced.

Description

Technical Field

[0001] The utility model relates to the field of deep hole drill bits, in particular to a deep hole drill bit with high linear drilling stability. Background Art

[0002] The deep hole drill bit is hardened and strengthened through quenching and other processes, thereby increasing the strength of the entire drill bit and significantly improving the stability of the straight drilling direction;

[0003] A Chinese patent, published under publication number CN220073365U, discloses a high-stability deep-hole drilling drill. During long deep-hole drilling operations, the drill only needs to be briefly paused to automatically refill coolant at the double-layer plate, allowing drilling to continue without removing the drill from the hole. Chips are quickly discharged under the lubrication effect of the coolant, ensuring high stability throughout the drilling process.

[0004] As shown in the above-mentioned patent, existing deep hole drill bits with high linear drilling stability all include a chip groove portion formed on the outside of the drill bit. The chip groove is used to guide the chips drilled out of the deep hole to the outside of the hole during the drilling process, thereby achieving the effect of chip removal. However, due to the high rotation speed of the drill bit during the drilling process, after the chips reach the outside of the deep hole along the chip removal hole, the spiral shape of the chip groove will give the chips a large thrust, causing them to separate from the drill bit at a high speed after leaving the deep hole, and then they can be easily thrown to the face of the person holding the drilling equipment, causing damage to the eyes and skin, and affecting the drilling work. Utility Model Content

[0005] In order to make up for the deficiencies of the existing technical problems, the purpose of the utility model is to provide a deep hole drill bit with high linear drilling stability that can effectively reduce the damage caused by debris splashing to workers and the impact on drilling work.

[0006] In order to solve the problems of the prior art, the technical solutions of the present utility model are as follows:

[0007] A deep hole drill with high linear drilling stability comprises a drill shank and a drill bit, the drill shank being formed at one end of the drill bit, a spiral chip groove being centrally symmetrically formed on the outer wall of the drill bit, a chip guide piece being centrally symmetrically formed on the end of the drill shank close to the drill bit, the cross section of the chip guide piece being in an upwardly protruding arc shape, both chip guide pieces being in an expanded shape toward the side away from the drill bit axis, and the recessed portion of the chip guide piece being in communication with the upper end of the chip groove.

[0008] Preferably, the connecting portion between the recessed portion of the chip guide piece and the inner wall of the chip groove forms a smooth transition.

[0009] Preferably, the drill bit, the drill shank and the chip guide piece are integrally arranged.

[0010] Preferably, the end of the debris guide piece away from the drill shank is arranged in a twisted shape with an angle to the horizontal plane.

[0011] Preferably, a plurality of heat dissipation strips are fixed on the top surface of the debris guide piece, a cover is formed on the side of the plurality of heat dissipation strips away from the debris guide piece, and a heat dissipation channel is formed between the cover and two adjacent heat dissipation strips and the debris guide piece.

[0012] Preferably, the angle between one end of the debris guide piece arranged in a twisted shape and the horizontal plane is 30-60 degrees.

[0013] Preferably, the length direction of the heat dissipation channel forms an angle with the length direction of an end surface of the chip guide plate away from the drill shank.

[0014] Preferably, the plurality of heat dissipation channels are arranged at equal intervals.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] 1. By providing a chip guide piece, the chip guide piece is twisted and arranged at an angle with the horizontal plane at one end away from the drill shank. Therefore, during the drilling process, after the chips leave the deep hole, the drill bit continuously rotates to drive the chip guide piece to rotate, so that the air flow is continuously disturbed and blown toward the deep hole, thereby exerting a reaction force on the chips, offsetting the power of the chips flying rapidly, so that the chips cannot quickly fly onto the face of the user. At the same time, the chip guide piece can guide the chips to diffuse in the circumference of the drill bit, further preventing the chips from flying onto the face of the user, thereby improving the safety of workers during drilling work and reducing the impact of chips on the drilling work;

[0017] 2. Since the drill bit contacts and rubs against the drilled object at high speed during the drilling process, the drill bit generates high heat after drilling, making the drill bit hot, which is not conducive to people's rapid replacement or removal of the drill bit. By providing a debris guide plate, the airflow can flow quickly to the deep hole during the drilling process, so that the airflow flows quickly outside the drill bit, accelerating the loss of heat on the drill bit. At the same time, the debris guide plate and the heat dissipation channel provided thereon can accelerate the airflow to take away the heat on the debris guide plate, and the heat is transferred from the drill bit to the debris guide plate, further accelerating the heat dissipation of the drill bit, which is conducive to the rapid replacement and removal of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the chip removal groove structure of the present invention.

[0020] Figure 3It is a schematic diagram of the structure of the debris guide piece of the present invention.

[0021] Figure 4 This is a structural diagram of embodiment 2 of the present invention.

[0022] Figure 5 It is a schematic diagram of the heat dissipation strip structure of the present invention.

[0023] Figure numerals: 1, drill shank; 2, drill bit; 3, chip groove; 4, chip guide plate; 5, heat dissipation strip; 6, cover plate; 7, heat dissipation channel. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] For example 1, please refer to Figures 1 to 3 The present embodiment provides a deep hole drill with high linear drilling stability, comprising a drill shank 1 and a drill bit 2. The drill shank 1 is formed at one end of the drill bit 2, and a spiral chip groove 3 is symmetrically formed on the outer wall of the drill bit 2. A chip guide piece 4 is symmetrically formed on the end of the drill shank 1 close to the drill bit 2. The cross-section of the chip guide piece 4 is an arc-shaped arrangement protruding upward. Both chip guide pieces 4 are in an expanded shape away from the axis of the drill bit 2. The recessed portion of the chip guide piece 4 is connected to the upper end of the chip groove 3. The end of the chip guide piece 4 away from the drill shank 1 is twisted at an angle to the horizontal plane, and the angle between the end of the chip guide piece 4 with the twisted shape and the horizontal plane is 30 degrees.

[0026] The connecting portion between the concave portion of the chip guide piece 4 and the inner wall of the chip discharge groove 3 forms a smooth transition, thereby ensuring the continuity of the chip flow and reducing resistance.

[0027] The drill bit 2 , the drill shank 1 and the chip guide piece 4 are integrally arranged, which can simplify the manufacturing process of the drill bit 2 and improve the overall strength and rigidity of the drill bit 2 .

[0028] During drilling, the chips in the deep hole are discharged from the deep hole along the chip groove 3, and the high-speed rotating spiral chip groove 3 will provide the chips with higher dynamic potential energy to move away from the deep hole. At the same time, the rotation of the drill bit 2 will drive the chip guide piece 4 to rotate at high speed, thereby forming an airflow from the drill shank 1 to the drill bit 2 on the outside of the drill bit 2. The airflow can offset the potential energy of the chips, so that the chips will not splash onto the face of the worker holding the drilling tool, reducing damage to the worker and reducing the impact on the drilling work. A small amount of chips with higher potential energy will hit the chip guide piece 4 and will be guided to expand outward in the circumferential direction of the drill bit 2 and will not splash onto the face.

[0029] For example 2, please refer to Figure 4 and Figure 5 Based on the first embodiment, this embodiment provides a further technical solution for a deep hole drill bit with high linear drilling stability. A plurality of heat dissipation bars 5 are fixed to the top surface of the chip guide piece 4. A cover plate 6 is formed on the side of the plurality of heat dissipation bars 5 away from the chip guide piece 4. A heat dissipation channel 7 is formed between the cover plate 6 and two adjacent heat dissipation bars 5 and the chip guide piece 4. The plurality of heat dissipation channels 7 are arranged at equal intervals. The length direction of the heat dissipation channel 7 forms an angle with the length direction of the end face of the chip guide piece 4 away from the drill shank 1, so that the length of the heat dissipation channel 7 on the chip guide piece 4 can be increased, thereby further improving the heat dissipation effect.

[0030] When the drill bit 2 rotates at high speed, the air flow enters through the upper end of the heat dissipation channel 7 and flows through the heat dissipation channel 7, taking away the heat on the debris guide plate 4 and the heat dissipation strip 5, and is discharged downward from the lower end of the heat dissipation channel 7, thereby accelerating the heat dissipation of the drill bit 2. At the same time, the rotation of the debris guide plate 4 will also drive the air flow to flow outside the drill bit 2. The double heat dissipation greatly accelerates the heat dissipation of the drill bit 2, allowing workers to replace and disassemble the drill bit 2 more quickly.

[0031] Embodiment 3: This embodiment provides a further technical solution based on embodiment 1. The angle between one end of the debris guide piece 4 arranged in a twisted shape and the horizontal plane is 60 degrees.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep hole drill with high linear drilling stability, comprising a drill shank (1) and a drill bit (2), wherein the drill shank (1) is formed at one end of the drill bit (2), and a spiral chip removal groove (3) is formed symmetrically on the outer wall of the drill bit (2), characterized in that: A chip guide piece (4) is symmetrically formed at one end of the drill shank (1) close to the drill bit (2), and the cross section of the chip guide piece (4) is arranged in an upwardly protruding arc shape. Both chip guide pieces (4) are in an expanded shape away from the axis of the drill bit (2), and the concave portion of the chip guide piece (4) is connected to the upper end of the chip discharge groove (3).

2. The deep hole drill bit with high linear drilling stability according to claim 1, characterized in that: The concave portion of the chip guide piece (4) and the connecting portion of the inner wall of the chip removal groove (3) are in a smooth transition.

3. The deep hole drill bit with high linear drilling stability according to claim 2, characterized in that: The drill bit (2), the drill shank (1) and the chip guide piece (4) are arranged in an integrated manner.

4. The deep hole drill bit with high linear drilling stability according to claim 3, characterized in that: The end of the debris guide piece (4) away from the drill shank (1) is arranged in a twisted shape with an angle to the horizontal plane.

5. The deep hole drill bit with high linear drilling stability according to claim 4, characterized in that: A plurality of heat dissipation bars (5) are fixed on the top surface of the debris guide plate (4), a cover plate (6) is formed on one side of the plurality of heat dissipation bars (5) away from the debris guide plate (4), and a heat dissipation channel (7) is formed between the cover plate (6) and two adjacent heat dissipation bars (5) and the debris guide plate (4).

6. The deep hole drill bit with high linear drilling stability according to claim 4, characterized in that: The angle between one end of the debris guide piece (4) arranged in a twisted shape and the horizontal plane is 30-60 degrees.

7. The deep hole drill bit with high linear drilling stability according to claim 5, characterized in that: The length direction of the heat dissipation channel (7) forms an angle with the length direction of an end surface of the debris guide piece (4) away from the drill shank (1).

8. The deep hole drill bit with high linear drilling stability according to claim 5, characterized in that: A plurality of heat dissipation channels (7) are arranged at equal intervals.

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