Guiding type chip removal drill bit with high cutting performance

Abstract

The utility model discloses a guide type chip removal drill bit with high cutting performance, which comprises a connecting section and a cutting section which are integrally formed, and the cutting section comprises a cutting head part, a cutting rod part and a cutting tail part; a cutting edge is arranged at the cutting head part; the drill bit comprises a cutting tail part and a cutting rod part, the cutting tail part is provided with a guide chip groove, the cutting rod part is further provided with a spiral liquid guide groove and a straight liquid guide groove, and the intersection of the spiral liquid guide groove and the straight liquid guide groove is located between the cutting tail part and the cutting rod part. Cooling liquid enters the spiral liquid guide groove and the straight liquid guide groove through the intersection of the spiral liquid guide groove and the straight liquid guide groove, one part of the cooling liquid enters the drill hole through the spiral liquid guide groove, the other part of the cooling liquid enters the guide chip removal groove through the straight liquid guide groove, and then the drill bit part in the deep position of the drill hole is cooled. And the drill bit keeps the best chip removal and cooling effects, so that the drill bit achieves the best cutting performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and particularly relates to a guiding type chip removal drill bit with high cutting performance. Background Art

[0002] In the field of machining, a drill bit is a tool for drilling holes, usually made of hard materials such as high-speed steel or tungsten carbide, and can be used for various materials such as metals, woods, plastics, etc.

[0003] During the drilling process of a metal drill bit, in order to cool the drill bit, it is necessary to pour coolant onto the drill bit to keep the drill bit in the best cutting performance. However, the existing drill bits guide the coolant into the drilled hole through the chip removal grooves. When the chip removal grooves discharge chips outward, the coolant cannot continuously enter the drilled hole to cool the drill head part, and it cannot balance cooling and chip removal, thus the best cutting performance of the drill bit cannot be exerted. Therefore, we propose a guiding type chip removal drill bit with high cutting performance. Content of the Utility Model

[0004] The purpose of the utility model is to provide a guiding type chip removal drill bit with high cutting performance to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A guiding type chip removal drill bit with high cutting performance, including an integrally formed connecting section and a cutting section, and the cutting section includes a cutting head, a cutting rod part and a cutting tail;

[0006] Symmetrically distributed cutting edges are arranged at the cutting head;

[0007] Spirally distributed guiding chip removal grooves are arranged on the cutting rod part, one end of the guiding chip removal groove extends to the cutting edge at the cutting head, and the other end of the guiding chip removal groove extends to the cutting tail;

[0008] A spiral liquid guide groove and a straight liquid guide groove are also arranged on the cutting rod part, and the intersection of the spiral liquid guide groove and the straight liquid guide groove is located between the cutting tail and the cutting rod part.

[0009] Preferably, the cutting head is a convex structure with a "one" shape in the middle.

[0010] Preferably, the number of the cutting edges, the guiding chip removal grooves, the spiral liquid guide grooves and the straight liquid guide grooves is the same.

[0011] Preferably, the spiral angles of the guiding chip removal grooves and the spiral liquid guide grooves are the same.

[0012] Preferably, the spiral liquid guide grooves are distributed on the outer edge of the guiding chip removal grooves.

[0013] Preferably, the depth of the guiding chip removal groove is one-fourth to one-third of the diameter of the cutting rod part.

[0014] Preferably, the depth of the spiral liquid guiding groove is one-tenth to one-eighth of the diameter of the cutting rod part.

[0015] Preferably, the straight liquid guiding groove is arranged at a position on the cutting rod part close to the cutting tail and extends and communicates with the guiding chip removal groove.

[0016] Preferably, the straight liquid guiding groove and the spiral liquid guiding groove have the same depth.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The present utility model is provided with a guiding chip removal groove, a spiral liquid guiding groove and a straight liquid guiding groove. The intersection of the spiral liquid guiding groove and the straight liquid guiding groove is located between the cutting tail and the cutting rod part. The spiral liquid guiding groove is distributed on the outer edge of the guiding chip removal groove. The spiral angles of the guiding chip removal groove and the spiral liquid guiding groove are the same. The straight liquid guiding groove is arranged at a position on the cutting rod part close to the cutting tail and extends and communicates with the guiding chip removal groove. When the drill bit is in use, the cutting edge performs cutting on the product, and the generated chips are discharged outwards along the guiding chip removal groove. During the cutting process of the drill bit feeding, the coolant enters the spiral liquid guiding groove and the straight liquid guiding groove through the intersection of the spiral liquid guiding groove and the straight liquid guiding groove. A part of the coolant enters the drilling hole through the spiral liquid guiding groove, and the other part enters the guiding chip removal groove through the straight liquid guiding groove and enters the inside of the drilling hole, thereby cooling and lowering the temperature of the drill bit part deep in the drilling hole, keeping the drill bit in the best chip removal and cooling effects, and thus enabling the drill bit to achieve the best cutting performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 3 is a front view structural schematic diagram of the present utility model.

[0022] In the figure: 1, connecting section; 2, cutting section; 201, cutting head; 201a, cutting edge; 202, cutting rod part; 202a, guiding chip removal groove; 202b, spiral liquid guiding groove; 202c, straight liquid guiding groove; 203, cutting tail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 3 , the guiding type chip removal drill bit with high cutting performance provided by the present utility model includes an integrally formed connecting section 1 and a cutting section 2. The cutting section 2 includes a cutting head 201, a cutting rod portion 202, and a cutting tail portion 203;

[0025] Symmetrically distributed cutting edges 201a are provided at the cutting head 201, and the cutting head 201 is a convex structure with a "one" shape in the middle;

[0026] A helically distributed guiding chip removal groove 202a is provided on the cutting rod portion 202. One end of the guiding chip removal groove 202a extends to the cutting edge 201a at the cutting head 201, and the other end of the guiding chip removal groove 202a extends to the cutting tail portion 203. The helical angles of the guiding chip removal groove 202a and the helical liquid guiding groove 202b are the same. The depth of the guiding chip removal groove 202a is one-fourth to one-third of the diameter of the cutting rod portion 202;

[0027] A helical liquid guiding groove 202b and a straight liquid guiding groove 202c are also provided on the cutting rod portion 202. The cutting edges 201a, the guiding chip removal grooves 202a, the helical liquid guiding grooves 202b, and the straight liquid guiding grooves 202c have the same number. The intersection of the helical liquid guiding groove 202b and the straight liquid guiding groove 202c is located between the cutting tail portion 203 and the cutting rod portion 202. The helical liquid guiding groove 202b is distributed on the outer edge of the guiding chip removal groove 202a. The depth of the helical liquid guiding groove 202b is one-tenth to one-eighth of the diameter of the cutting rod portion 202;

[0028] The straight liquid guiding groove 202c is provided at a position on the cutting rod portion 202 close to the cutting tail portion 203 and extends and communicates with the guiding chip removal groove 202a. The straight liquid guiding groove 202c and the helical liquid guiding groove 202b have the same depth.

[0029] The utility model is provided with a guiding chip removal groove 202a, a spiral liquid guiding groove 202b and a straight liquid guiding groove 202c. The intersection of the spiral liquid guiding groove 202b and the straight liquid guiding groove 202c is located between the cutting tail part 203 and the cutting rod part 202. The spiral liquid guiding groove 202b is distributed on the outer edge of the guiding chip removal groove 202a. The spiral angles of the guiding chip removal groove 202a and the spiral liquid guiding groove 202b are the same. The straight liquid guiding groove 202c is arranged at a position on the cutting rod part 202 close to the cutting tail part 203 and extends and communicates with the guiding chip removal groove 202a. When the drill bit is in use, the cutting edge 201a performs cutting on the product, and the generated chips are discharged outwards along the guiding chip removal groove 202a. During the cutting process of the drill bit feeding, the coolant enters the spiral liquid guiding groove 202b and the straight liquid guiding groove 202c through the intersection of the spiral liquid guiding groove 202b and the straight liquid guiding groove 202c. A part of the coolant enters the drill hole through the spiral liquid guiding groove 202b, and the other part enters the guiding chip removal groove 202a through the straight liquid guiding groove 202c and enters the inside of the drill hole, so as to cool the drill bit part deep in the drill hole, keep the best chip removal and cooling effects of the drill bit, and further enable the drill bit to achieve the best cutting performance.

[0030] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-cutting performance guided chip removal drill, characterized in that: It comprises an integrally formed connecting section (1) and a cutting section (2), wherein the cutting section (2) comprises a cutting head section (201), a cutting rod section (202) and a cutting tail section (203); The cutting head (201) is provided with symmetrically distributed cutting edges (201a); The cutting rod portion (202) is provided with a spirally distributed guide chip groove (202a), one end of the guide chip groove (202a) extends to the cutting edge (201a) at the cutting head portion (201), and the other end of the guide chip groove (202a) extends to the cutting tail portion (203); The cutting rod portion (202) is also provided with a spiral liquid guiding groove (202b) and a straight liquid guiding groove (202c), and the intersection of the spiral liquid guiding groove (202b) and the straight liquid guiding groove (202c) is located between the cutting tail portion (203) and the cutting rod portion (202).

2. A high-cutting performance guided chip removal drill according to claim 1, characterized in that: The cutting head (201) is a protruding structure with an "I" shape in the middle.

3. A high-cutting performance guided chip removal drill according to claim 1, characterized in that: The number of the cutting edges (201a), the guide chip removal grooves (202a), the spiral liquid guide grooves (202b) and the straight liquid guide grooves (202c) is the same.

4. A high-cutting performance guided chip removal drill according to claim 1, characterized in that: The spiral angles of the chip guide groove (202a) and the spiral liquid guide groove (202b) are the same.

5. A high-cutting performance guided chip removal drill according to claim 4, characterized in that: The spiral liquid guiding groove (202b) is distributed on the outer edge of the guide chip removal groove (202a).

6. A high-cutting performance guided chip removal drill according to claim 1, characterized in that: The depth of the chip guide groove (202a) is one quarter to one third of the diameter of the cutting rod (202).

7. A high-cutting performance guided chip removal drill according to claim 6, characterized in that: The depth of the spiral liquid guiding groove (202b) is one tenth to one eighth of the diameter of the cutting rod (202).

8. A high-cutting performance guided chip removal drill according to claim 7, characterized in that: The straight liquid guide groove (202c) is arranged on the cutting rod portion (202) at a position close to the cutting tail portion (203), and extends to communicate with the guide chip removal groove (202a).

9. A high-cutting performance guided chip removal drill according to claim 8, characterized in that: The straight liquid-conducting groove (202c) and the spiral liquid-conducting groove (202b) have the same depth.

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