Alloy straight fluted drill capable of rapidly breaking chips

Abstract

The utility model belongs to the field of alloy straight fluted drills, and particularly relates to a quick chip breaking alloy straight fluted drill which comprises an alloy straight fluted drill body, the alloy straight fluted drill body comprises a drill handle, a drill body and a drilling tool, the drilling tool is arranged on the left side of the drill body, the drill handle is arranged on the right side of the drill body, one end of the drilling tool is provided with a blade part, and the other end of the drilling tool is provided with a chip breaking device. The drilling tool is provided with a chip removal straight groove, the chip removal straight groove is located between the blade parts, the chip removal straight groove is provided with a plurality of core height components, a blade strip is arranged at one end of each blade part, the included angle between the blade strip and each blade part is 21 degrees, each core height component comprises a first core height, a second core height and a third core height, the first core height is arranged on one side of the blade strip, and the second core height is arranged on the other side of the blade strip. The second core height is arranged on one side of the first core height. The utility model is reasonable in design, and adopts a multi-core high structure, so that the aluminum skimmings are effectively bent when the cutter rotates, the slender characteristic of soft aluminum is changed, and most of the aluminum skimmings are broken off and fly out of the hole along with centrifugal force.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy straight-flute drills, in particular to a quick-chip-breaking alloy straight-flute drill. Background Art

[0002] As an important part of the cutting tools for machining, the drill bit is mainly used for rough machining of holes. A straight-flute drill with a long service life disclosed in a Chinese patent with the publication number CN102554323A is used to reduce production costs. The straight-flute drill of this invention includes a shank and a cutting part. The cutting part is provided with a side edge and a chip flute along its own axial direction. The key lies in that a platform is provided at the bottom of the chip flute. This special flute design has more chip space while ensuring a large core thickness. At the same time, the double cutting edges formed by the platform have good guiding properties, which can better ensure the quality of the machined product. The straight-flute drill of this invention has a clever structural design, a large core thickness, a large chip space, and good guiding properties, ensuring that the drill bit will not break, thereby reducing production costs.

[0003] In actual use, it is found that when the original tool drills soft aluminum, the aluminum chips do not break, and are easy to entangle on the tool and scratch the hole wall. Therefore, we propose a quick-chip-breaking alloy straight-flute drill to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a quick-chip-breaking alloy straight-flute drill to solve the deficiencies existing in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The quick-chip-breaking alloy straight-flute drill includes an alloy straight-flute drill body, and the alloy straight-flute drill body includes a drill shank, a drill body, and a drill bit;

[0007] The drill bit is arranged on the left side of the drill body, and the drill shank is arranged on the right side of the drill body;

[0008] One end of the drill bit is provided with a cutting part, and the drill bit is provided with a chip removal straight flute. The chip removal straight flute is located between the cutting parts, and the chip removal straight flute is provided with a plurality of core height components.

[0009] Preferably, one end of the cutting part is provided with a land, and the included angle between the land and the cutting part is set to 21°.

[0010] Preferably, the core height components include core height one, core height two, and core height three. Core height one is arranged on one side of the land, core height two is arranged on one side of core height one, and core height three is arranged on one side of core height two.

[0011] Preferably, there is an inclined surface between the drill bit and the drill body, and a compound chamfer is arranged at the connection between the drill bit and the inclined surface.

[0012] Preferably, a protective coating is provided on the outer side of the drill bit. The protective coating includes a diamond coating and a titanium carbonitride coating. The diamond coating is coated on the drill bit, and the titanium carbonitride coating is coated on the diamond coating.

[0013] Advantages of the present utility model:

[0014] 1. When the product is soft aluminum and has a deep hole, the aluminum chips are soft and not easy to break, and the hole wall is easy to be scratched. By adopting a multi-core high structure, with the cooperation of core height one, core height two, and core height three, when the tool rotates, the aluminum chips are effectively bent, changing the characteristics of the long and thin soft aluminum. With the centrifugal force, most of the aluminum chips will break and fly out of the hole, thereby improving the roughness of the hole wall.

[0015] 2. By providing a compound chamfer, a large chamfer can be chamfered simultaneously while machining the deep hole, saving the processing cycle.

[0016] 3. By providing a protective coating, the diamond coating can increase the strength of the drill bit, and the carbon element added in the titanium carbonitride coating can improve the hardness of the tool and obtain better surface lubricity. Description of the drawings

[0017] Figure 1 It is a schematic structural diagram of the quick chip-breaking alloy straight flute drill proposed by the present utility model;

[0018] Figure 2 It is a schematic cross-sectional structural diagram of the a-a section of the quick chip-breaking alloy straight flute drill proposed by the present utility model;

[0019] Figure 3 It is a schematic structural diagram of part A of the quick chip-breaking alloy straight flute drill proposed by the present utility model;

[0020] Figure 4 It is a schematic cross-sectional structural diagram of the protective coating of the quick chip-breaking alloy straight flute drill proposed by the present utility model.

[0021] In the figure: 1. Alloy straight flute drill body; 2. Drill shank; 3. Drill body; 4. Drill bit; 5. Cutting edge; 6. Chip flute; 7. Land; 8. Core height one; 9. Core height two; 10. Core height three; 11. Inclined plane; 12. Compound chamfer; 13. Diamond coating; 14. Titanium carbonitride coating. Detailed implementation manners

[0022] The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Reference Figures 1-4 Figures 1-4 , a quick chip-breaking alloy straight flute drill, includes an alloy straight flute drill body 1. The alloy straight flute drill body 1 includes a drill shank 2, a drill body 3, and a drill blade 4. The drill blade 4 is disposed on the left side of the drill body 3, the drill shank 2 is disposed on the right side of the drill body 3. One end of the drill blade 4 is provided with a cutting edge 5, and a chip flute 6 is provided on the drill blade 4. The chip flute 6 is located between the cutting edges 5, and a plurality of core height components are provided on the chip flute 6. One end of the cutting edge 5 is provided with a land 7, and the angle between the land 7 and the cutting edge 5 is set to 21°.

[0024] In this embodiment, the core height components are provided including a first core height 8, a second core height 9, and a third core height 10. The first core height 8 is disposed on one side of the land 7, the second core height 9 is disposed on one side of the first core height 8, and the third core height 10 is disposed on one side of the second core height 9. By adopting a multi-core height structure, with the cooperation of the first core height 8, the second core height 9, and the third core height 10, when the tool rotates, the aluminum chips are effectively bent, changing the characteristics of the soft aluminum being slender. With the centrifugal force, most of the aluminum chips will break and fly out of the hole, thereby improving the hole wall roughness.

[0025] In this embodiment, a chamfer 11 is provided between the drill blade 4 and the drill body 3, and a compound chamfer 12 is provided at the connection between the drill blade 4 and the chamfer 11. By providing the compound chamfer 12, when machining a deep hole, the large chamfer can be chamfered at the same time, saving the machining cycle.

[0026] In this embodiment, a protective coating is provided on the outer side of the drill blade 4. The protective coating includes a diamond coating 13 and a titanium carbonitride coating 14. The diamond coating 13 is coated on the drill blade 4, and the titanium carbonitride coating 14 is coated on the diamond coating 13. By providing the protective coating, by providing the diamond coating 13, the strength of the drill blade 4 can be increased. By providing the carbon element added in the titanium carbonitride coating 14, the tool hardness can be improved and better surface lubricity can be obtained.

[0027] In the present utility model, when the product is soft aluminum and a deep hole, the aluminum chips are soft and not easy to break, and the hole wall is easily scratched. By adopting a multi-core height structure, with the cooperation of the first core height 8, the second core height 9, and the third core height 10, when the tool rotates, the aluminum chips are effectively bent, changing the characteristics of the soft aluminum being slender. With the centrifugal force, most of the aluminum chips will break and fly out of the hole, thereby improving the hole wall roughness. By providing the compound chamfer 12, when machining a deep hole, the large chamfer can be chamfered at the same time, saving the machining cycle. By providing the protective coating, by providing the diamond coating 13, the strength of the drill blade 4 can be increased. By providing the carbon element added in the titanium carbonitride coating 14, the tool hardness can be improved and better surface lubricity can be obtained.

[0028] The above has introduced in detail the quick-chip-breaking alloy straight-flute drill provided by the present utility model. Specific embodiments are applied herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. Rapid chip breaking alloy straight groove drill, characterized by: It comprises an alloy straight groove drill body (1), wherein the alloy straight groove drill body (1) comprises a drill shank (2), a drill body (3) and a drill cutter (4); The drill bit (4) is arranged on the left side of the drill body (3), and the drill handle (2) is arranged on the right side of the drill body (3); A cutting edge (5) is provided at one end of the drill bit (4), and a chip removal straight groove (6) is provided on the drill bit (4); the chip removal straight groove (6) is located between the cutting edges (5), and the chip removal straight groove (6) is provided with a plurality of core height components.

2. The fast chip-breaking alloy straight groove drill according to claim 1, characterized in that: A cutting edge (7) is provided at one end of the cutting edge (5), and the angle between the cutting edge (7) and the cutting edge (5) is set to 21°.

3. The fast chip-breaking alloy straight groove drill according to claim 1, characterized in that: The core height component arrangement comprises core height one (8), core height two (9) and core height three (10), wherein core height one (8) is arranged on one side of the edge band (7), core height two (9) is arranged on one side of core height one (8), and core height three (10) is arranged on one side of core height two (9).

4. The fast chip-breaking alloy straight groove drill according to claim 1, characterized in that: An inclined surface (11) is provided between the drill bit (4) and the drill body (3), and a composite chamfer (12) is provided at the connection between the drill bit (4) and the inclined surface (11).

5. The fast chip-breaking alloy straight groove drill according to claim 1, characterized in that: The outer side of the drill bit (4) is provided with a protective coating.

6. The fast chip-breaking alloy straight groove drill according to claim 5, characterized in that: The protective coating comprises a diamond coating (13) and a titanium carbide nitride coating (14); the diamond coating (13) is coated on the drill bit (4), and the titanium carbide nitride coating (14) is coated on the diamond coating (13).

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