Shallow hole drill with high stability

Abstract

The utility model relates to the technical field of shallow hole drills, and discloses a high-stability shallow hole drill which comprises a cutter handle, a cutter body, a spiral cutter groove, a spiral cold water hole, an arc-shaped reinforcing strip and an arc-shaped groove. A cutter body is arranged at one end of the cutter handle, spiral cutter grooves are formed in the two sides of the cutter body, arc-shaped reinforcing strips are arranged on the inner sides of the spiral cutter grooves at equal intervals, cutter heads are fixed to the ends of the spiral cutter grooves through bolts, arc-shaped grooves are formed in the outer side, located between the spiral cutter grooves, of the cutter body at equal intervals, and spiral cold water holes are formed in the spiral cutter grooves in a penetrating mode. The arc-shaped reinforcing strips are arranged on the inner sides of the spiral cutter grooves, the strength of the cutter body can be improved, the arc-shaped grooves are formed in the outer side of the cutter body, the ends of the arc-shaped grooves and the edges of the spiral cutter grooves form unique cutting edges, the cutting efficiency can be improved, meanwhile, the arc-shaped grooves increase the contact area of the cutter body with cooling liquid and external gas, the heat dissipation capacity of the cutter body can be improved, and the service life of the cutter body is prolonged. Compared with a common shallow hole drill, the shallow hole drill is longer in service life and suitable for being widely used and popularized.

Description

Technical Field

[0001] The utility model relates to the technical field of shallow hole drilling, in particular to a shallow hole drill with strong stability. Background Art

[0002] Shallow hole drills are also commonly called U drills, violent drills, water injection drills, etc. They are equipped with water outlet holes at the bottom. Compared with ordinary drill bits, they are more efficient and can process deep holes 5 times the diameter under high tool stability.

[0003] Patent No. CN216325374U discloses a shallow hole drill, including a cutter body, on which a cutting edge band is connected; a cutter handle arranged at one end of the cutter body; and one or more shock-absorbing components, the shock-absorbing components including a shock-absorbing layer 1, a counterweight layer and a shock-absorbing layer 2 which are sequentially arranged from the inside of the cutter body to the outside. Since the shock-absorbing layer 1, the counterweight layer and the shock-absorbing layer 2 are sequentially arranged from the inside of the cutter body to the outside, the shock-absorbing layer 1 and the shock-absorbing layer 2 wrap the counterweight layer to prevent the counterweight layer from directly contacting the cutter body, and preventing the shock-absorbing layer 1 and the shock-absorbing layer 2 from directly transmitting the vibration generated by the cutter body to the counterweight layer, so that resonance hysteresis is generated between the cutter body and the counterweight layer, the vibration generated by the shallow hole drill is effectively reduced, and the shock-absorbing effect is good.

[0004] The disadvantage of the existing shallow hole drill is that the setting of the damping assembly affects the opening of the channel, affects the position of the channel, and affects the structure of the cutter body, resulting in reduced stability of the down-the-hole drill. Therefore, we propose a shallow hole drill with strong stability. Utility Model Content

[0005] Technical issues solved

[0006] In view of the deficiencies in the prior art, the utility model provides a shallow hole drill with strong stability, which solves the problems raised by the background technology.

[0007] Technical Solution

[0008] The utility model provides the following technical solutions: a shallow hole drill with strong stability, comprising a handle, a blade, a spiral blade groove, a spiral cold water hole, an arc-shaped reinforcement strip and an arc-shaped groove;

[0009] A blade body is provided at one end of the handle, spiral blade grooves are opened on both sides of the blade body, arc-shaped reinforcement strips are equidistantly arranged on the inner side of the spiral blade grooves, a blade head is fixed to the end of the spiral blade grooves by bolts, arc-shaped grooves are equidistantly arranged on the outer side of the blade body between the spiral blade grooves, and spiral cooling water holes are opened through the inside of the spiral blade grooves.

[0010] Furthermore, liquid inlet holes are formed through both ends of the handle, and the liquid inlet holes are connected to the spiral cold water hole.

[0011] Furthermore, a flat surface is provided on one side of the knife handle, and a flat tail is provided at one end of the knife handle away from the handle neck.

[0012] Furthermore, through holes are provided at both ends of the blade body, and the through holes penetrate the spiral blade groove.

[0013] Furthermore, a handle neck is provided between the knife handle and the knife body, and one end of the spiral knife groove is located on one side of the handle neck.

[0014] Furthermore, the spiral knife groove and the spiral cold water hole are both spiral structures.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] Spiral grooves are provided on both sides of the blade, and the edges of the spiral grooves form blades for cutting workpieces. Chip removal grooves are provided inside the spiral grooves for removing chips. Multiple arc-shaped reinforcement strips are provided inside the spiral grooves to improve the strength of the blade and prevent it from being deformed. The arc grooves provided on the outside of the blade form unique cutting edges with the ends of the arc grooves and the edges of the spiral grooves, which can improve cutting efficiency. At the same time, the arc grooves increase the contact area between the blade and the coolant and external gas, which can improve the heat dissipation capacity of the blade.

[0017] Two spiral cooling water holes are opened in the blade body to increase the discharge volume of the coolant, which can effectively cool the blade head and increase the service life of the blade head. A flat tail is opened at one end of the shank to facilitate its insertion into the tool holder and fixture. The opening of the flat surface makes it easier for the tool holder and fixture to fix the shank. The shank neck can protect the tool holder and fixture.

[0018] The shallow hole drill has multiple arc-shaped reinforcement strips arranged on the inner side of the spiral cutter groove, which can improve the strength of the blade. The arc-shaped groove opened on the outer side of the blade forms a unique cutting edge with the end of the arc-shaped groove and the edge of the spiral cutter groove, which can improve the cutting efficiency. At the same time, the arc-shaped groove increases the contact area between the blade and the coolant and external gas, which can improve the heat dissipation capacity of the blade, thereby improving the stability of the shallow hole drill and having a longer service life than ordinary shallow hole drills. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a side view of the utility model;

[0021] Figure 3 This is a schematic diagram of the spiral cold water hole structure of the utility model;

[0022] Figure 4 It is a cross-sectional view of the blade of the utility model;

[0023] In the figure: 1. handle; 2. blade; 3. spiral blade groove; 4. blade head; 5. spiral cooling water hole; 6. through hole; 7. arc-shaped reinforcement strip; 8. liquid inlet hole; 9. flat surface; 10. flat tail; 11. handle neck; 12. arc-shaped groove. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-Figure 4 In the embodiment of the utility model, it includes a handle 1, a blade 2, a spiral blade groove 3, a spiral cold water hole 5, an arc-shaped reinforcement strip 7 and an arc groove 12;

[0026] A blade body 2 is provided at one end of the handle 1, and spiral blade grooves 3 are opened on both sides of the blade body 2. Arc reinforcement strips 7 are equidistantly arranged on the inner side of the spiral blade grooves 3. A blade head 4 is fixed to the end of the spiral blade grooves 3 by bolts. Arc grooves 12 are equidistantly arranged on the outer side of the blade body 2 located between the spiral blade grooves 3, and spiral cooling water holes 5 are opened through the spiral blade grooves 3.

[0027] Among them, liquid inlet holes 8 are opened through both ends of the inside of the tool handle 1, and the liquid inlet holes 8 are connected with the spiral cooling water hole 5, and the external cooling liquid flows into the spiral cooling water hole 5 through the liquid inlet holes 8.

[0028] Among them, a flat surface 9 is opened on one side of the knife handle 1, and a flat tail 10 is set at the end of the knife handle 1 away from the handle neck 11. The setting of the flat tail 10 facilitates the insertion of the knife handle 1 into the knife seat and the clamp, and the opening of the flat surface 9 facilitates the knife seat and the clamp to fix the knife handle 1.

[0029] There are through holes 6 at both ends of the blade body 2 , and the through holes 6 penetrate the spiral blade groove 3 .

[0030] A handle neck 11 is provided between the handle 1 and the blade body 2, and one end of the spiral blade groove 3 is located at one side of the handle neck 11, so that the handle neck 11 will not affect chip removal.

[0031] The spiral knife grooves 3 and the spiral cooling water holes 5 are both spiral structures, and the spiral knife grooves 3 and the spiral cooling water holes 5 with spiral structures facilitate the flow of chips and coolant.

[0032] The working principle of the utility model is as follows: spiral grooves 3 are provided on both sides of the blade 2, and the edges of the spiral grooves 3 form blades for cutting workpieces. A chip discharge groove is provided inside the spiral groove 3 for discharging debris. Two spiral cold water holes 5 are provided in the blade 2 to increase the displacement of the coolant, effectively cool the cutter head 4, and improve the service life of the cutter head 4. A plurality of arc-shaped reinforcing strips 7 are provided inside the spiral groove 3 to increase the strength of the blade 2 and make it less likely to deform. An arc groove 12 is provided on the outer side of the blade 2, and the end of the arc groove 12 forms a unique cutting edge with the edge of the spiral groove 3, which can improve the cutting efficiency. At the same time, the arc groove 12 increases the contact area between the blade 2 and the coolant and the external gas, which can improve the heat dissipation capacity of the blade 2, thereby improving the stability of the shallow hole drill, and having a longer service life than that of the ordinary shallow hole drill. A flat tail 10 is provided at one end of the shank 1 to facilitate its insertion into the shank and the fixture. The flat surface 9 is provided to facilitate the shank and the fixture to fix the shank 1, and the shank neck 11 can protect the shank and the fixture.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shallow hole drill with high stability, comprising a handle (1), a blade (2), a spiral cutter groove (3), a spiral cold water hole (5), an arc-shaped reinforcement strip (7) and an arc-shaped groove (12); Features: A blade body (2) is provided at one end of the knife handle (1), spiral blade grooves (3) are provided on both sides of the blade body (2), arc-shaped reinforcement strips (7) are provided equidistantly inside the spiral blade grooves (3), a blade head (4) is fixed to the end of the spiral blade groove (3) by means of bolts, arc-shaped grooves (12) are provided equidistantly outside the blade body (2) between the spiral blade grooves (3), and spiral cooling water holes (5) are provided through the spiral blade grooves (3).

2. A shallow hole drill with strong stability according to claim 1, characterized in that: Liquid inlet holes (8) are provided at both ends of the interior of the knife handle (1), and the liquid inlet holes (8) are in communication with the spiral cold water hole (5).

3. A shallow hole drill with strong stability according to claim 1, characterized in that: A flat surface (9) is provided on one side of the knife handle (1), and a flat tail (10) is provided on the end of the knife handle (1) away from the handle neck (11).

4. A shallow hole drill with strong stability according to claim 1, characterized in that: Through holes (6) are provided at both ends of the blade body (2), and the through holes (6) penetrate the spiral blade groove (3).

5. The shallow hole drill with strong stability according to claim 1, characterized in that: A shank neck (11) is provided between the knife handle (1) and the knife body (2), and one end of the spiral knife groove (3) is located on one side of the shank neck (11).

6. A shallow hole drill with strong stability according to claim 1, characterized in that: The spiral knife groove (3) and the spiral cold water hole (5) are both spiral structures.

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