CN216028276U - Cross fluting alloy drill bit - Google Patents
Cross fluting alloy drill bit Download PDFInfo
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- CN216028276U CN216028276U CN202121950977.1U CN202121950977U CN216028276U CN 216028276 U CN216028276 U CN 216028276U CN 202121950977 U CN202121950977 U CN 202121950977U CN 216028276 U CN216028276 U CN 216028276U
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Abstract
The application discloses cross fluting alloy drill bit relates to the technical field of drill bit, including main cutting sword, vice cutting sword sets up perpendicularly in the both sides of main cutting sword, is provided with first rib between one side of vice cutting sword orientation cutting direction and the lateral wall of main cutting sword. This application provides the pulling force that cutting direction is the same for vice cutting sword through setting up first rib to realize improving the anti tear performance of joint position between main cutting sword and the vice cutting sword, thereby strengthen the connection of main cutting sword and vice cutting sword, thereby improve the life of cross drill bit, reduce the processing cost.
Description
Technical Field
The application relates to the technical field of drill bits, in particular to a cross slotting alloy drill bit.
Background
The cross drill comprises a main cutting knife and an auxiliary cutting knife, wherein the main cutting knife and the auxiliary cutting knife are arranged in a staggered mode to form a cross shape, a main cutting edge with a main cutting function is formed on the main cutting knife, and an auxiliary cutting edge with an auxiliary cutting function is formed on the auxiliary cutting knife, so that the working load of the main cutting knife is reduced.
The inventor thinks that: in the use process of the existing cross drill, the joint part between the main cutter and the auxiliary cutter of the cross drill is easy to crack, the cross drill needs to be frequently replaced, the processing cost is increased, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the middle combined part of a main cutting blade and an auxiliary cutting blade of a cross-shaped drill bit is easy to crack, the application provides a cross-shaped slotting alloy drill bit.
The application provides a cross fluting alloy drill bit adopts following technical scheme:
a cross slotting alloy drill bit comprises a main cutting knife and auxiliary cutting knives, wherein the auxiliary cutting knives are vertically arranged on two sides of the main cutting knife, and a first reinforcing part is arranged between one side of each auxiliary cutting knife facing the cutting direction and the side wall of the main cutting knife.
By adopting the technical scheme, when the main cutting knife and the auxiliary cutting knife have the cutting function at the same time, the auxiliary cutting knife can bear an acting force opposite to the cutting direction, and the first reinforcing part is arranged to provide a pulling force which is the same as the cutting direction for the auxiliary cutting knife so as to improve the tear resistance of the joint part between the main cutting knife and the auxiliary cutting knife, so that the connection between the main cutting knife and the auxiliary cutting knife is enhanced, the service life of the drill bit is prolonged, and the processing cost is reduced.
Optionally, a second reinforcing portion is arranged between one side of the secondary cutting blade facing away from the cutting direction and the side wall of the main cutting blade.
By adopting the technical scheme, the second reinforcing part provides a supporting force which is the same as the cutting direction for the auxiliary cutting knife, so that the tear resistance of the joint between the main cutting knife and the auxiliary cutting knife is further improved.
Optionally, the first reinforcing portion and the second reinforcing portion are provided with round corners.
By adopting the technical scheme, when the main cutting knife and the auxiliary cutting knife work, the fillet effectively reduces stress concentration on the first reinforcing part and the second reinforcing part, and the stress is dispersed along the normal direction of the fillet, so that cracks are not generated.
Optionally, the radius of the fillet is 1 to 3 mm.
By adopting the technical scheme, the radius of the fillet is 1-3 mm, so that the cutting tool is suitable for the current main cutting tool and the auxiliary cutting tool.
Optionally, the main cutting blade, the sub-cutting blade, the first reinforcing portion, and the second reinforcing portion are integrally formed.
Through adopting above-mentioned technical scheme, through integrated into one piece's main cutting sword, vice cutting sword, first rib and second rib to the structural strength of reinforcing drill bit.
Optionally, the first reinforcing portion and the second reinforcing portion are welded and fixed between the main cutting blade and the auxiliary cutting blade.
By adopting the technical scheme, the welding and fixing processing mode is simple, the production period is short, the weight is light, and the equipment is relatively simple.
Optionally, the fillet is concave inwards
Through adopting above-mentioned technical scheme, inwards cave in and reduce first rib and second rib volume, alleviate the weight of drill bit.
Optionally, the main cutting blade, the sub-cutting blade, the first reinforcement portion, and the second reinforcement portion are made of tungsten steel.
By adopting the technical scheme, the tungsten steel has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like so as to improve the service life and the structural strength of the drill bit,
in summary, the present application includes at least one of the following beneficial technical effects:
1. when the main cutting knife and the auxiliary cutting knife have a cutting function at the same time, the auxiliary cutting knife can bear an acting force opposite to the cutting direction, and a pulling force which is the same as the cutting direction is provided for the auxiliary cutting knife by arranging the first reinforcing part, so that the tear resistance of the joint part between the main cutting knife and the auxiliary cutting knife is improved, the connection between the main cutting knife and the auxiliary cutting knife is enhanced, the service life of the drill bit is prolonged, and the processing cost is reduced;
2. the second reinforcing part provides a supporting force which is the same as the cutting direction for the auxiliary cutting blade, so that the tear resistance of the joint between the main cutting blade and the auxiliary cutting blade is further improved;
3. when the main cutting knife and the auxiliary cutting knife work, the fillet effectively reduces stress concentration on the first reinforcing part and the second reinforcing part, and the stress is dispersed along the normal direction of the fillet, so that cracks are not generated.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;
FIG. 2 is a schematic view of the state of embodiment 1 of the present application;
FIG. 3 is a schematic view of the overall structure of embodiment 2 of the present application;
fig. 4 is a state diagram of embodiment 2 of the present application.
Description of reference numerals: 1. a main cutting blade; 2. a secondary cutting blade; 3. a first reinforcing portion; 4. a second reinforcement portion; 5. and (4) rounding.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
Example 1
The embodiment of the application discloses a cross slotted alloy drill bit.
Referring to fig. 1 and 2, the cross-shaped slotting alloy drill comprises a main cutting blade 1 made of tungsten steel and two auxiliary cutting blades 2, wherein the two auxiliary cutting blades 2 are respectively vertically and integrally formed on two sides of the main cutting blade 1 to form a cross shape, and the rotating direction of the drill is the cutting direction when the drill is used.
Referring to fig. 1 and 2, a first reinforcing portion 3 made of tungsten steel is integrally formed between a side of the minor cutting blade 2 facing the cutting direction and a side wall of the major cutting blade 1, and a second reinforcing portion 4 made of tungsten steel is integrally formed between a side of the minor cutting blade 2 facing away from the cutting direction and the side wall of the major cutting blade 1.
Referring to fig. 1 and 2, an inwardly recessed fillet 5 is formed at a side of the first reinforcing portion 3 away from the main cutting blade 1 and the sub cutting blade 2, and an inwardly recessed fillet 5 is also formed at a side of the second reinforcing portion 4 away from the main cutting blade 1 and the sub cutting blade 2. The radius of the fillet 5 is 2 mm.
The implementation principle of a cross slotted alloy drill bit in embodiment 1 of the application is as follows:
when the main cutting blade 1 and the auxiliary cutting blade 2 perform a cutting function simultaneously, the auxiliary cutting blade 2 is subjected to a force opposite to the cutting direction, the first reinforcing portion 3 provides the auxiliary cutting blade 2 with a pulling force in the same direction as the cutting direction, and the second reinforcing portion 4 provides the auxiliary cutting blade 2 with a supporting force in the same direction as the cutting direction, so that the tear resistance of the joint between the main cutting blade 1 and the auxiliary cutting blade 2 is improved.
Example 2
The difference between the present application and embodiment 1 is that, referring to fig. 3 and 4, a cross-shaped alloy drill includes a main cutting blade 1 made of tungsten steel, and two sub-cutting blades 2, wherein the two sub-cutting blades 2 are respectively vertically and integrally formed at both sides of the main cutting blade 1 to form a cross shape, and a direction in which the drill rotates when in use is a cutting direction.
Referring to fig. 3 and 4, a first reinforcing portion 3 made of tungsten steel is welded and fixed between one side of the secondary cutting blade 2 facing the cutting direction and the side wall of the main cutting blade 1, one side of the first reinforcing portion 3 close to the main cutting blade 1 is welded and fixed with the side wall of the main cutting blade 1, and one side of the first reinforcing portion 3 close to the secondary cutting blade 2 is welded and fixed with the side wall of the secondary cutting blade 2; a second reinforcing part 4 made of tungsten steel is welded and fixed between one side of the auxiliary cutting knife 2, which is far away from the cutting direction, and the side wall of the main cutting knife 1, one side of the second reinforcing part 4, which is close to the main cutting knife 1, is welded and fixed with the side wall of the main cutting knife 1, and one side of the second reinforcing part 4, which is close to the auxiliary cutting knife 2, is welded and fixed with the side wall of the auxiliary cutting knife 2.
The implementation principle of the cross slotted alloy drill bit in embodiment 2 of the application is as follows: when the main cutting blade 1 and the auxiliary cutting blade 2 perform a cutting function simultaneously, the auxiliary cutting blade 2 is subjected to a force opposite to the cutting direction, the first reinforcing portion 3 provides the auxiliary cutting blade 2 with a pulling force in the same direction as the cutting direction, and the second reinforcing portion 4 provides the auxiliary cutting blade 2 with a supporting force in the same direction as the cutting direction, so that the tear resistance of the joint between the main cutting blade 1 and the auxiliary cutting blade 2 is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a cross fluting alloy drill bit, includes main cutting sword (1), vice cutting sword (2), its characterized in that: the auxiliary cutting knives (2) are vertically arranged on two sides of the main cutting knife (1), and a first reinforcing part (3) is arranged between one side of each auxiliary cutting knife (2) facing the cutting direction and the side wall of the main cutting knife (1).
2. The cross-slotted alloy drill bit of claim 1, wherein: and a second reinforcing part (4) is arranged between one side of the auxiliary cutting knife (2) departing from the cutting direction and the side wall of the main cutting knife (1).
3. The cross-slotted alloy drill bit of claim 2, wherein: and the first reinforcing part (3) and the second reinforcing part (4) are both provided with a fillet (5).
4. The cross-slotted alloy drill bit of claim 3, wherein: the radius of the fillet (5) is 1 to 3 mm.
5. The cross-slotted alloy drill bit of claim 2, wherein: the main cutting blade (1), the auxiliary cutting blade (2), the first reinforcing part (3) and the second reinforcing part (4) are integrally formed.
6. The cross-slotted alloy drill bit of claim 2, wherein: the first reinforcing part (3) and the second reinforcing part (4) are welded and fixed between the main cutting knife (1) and the auxiliary cutting knife (2).
7. The cross-slotted alloy drill bit of claim 3, wherein: the fillet (5) is inwards concave.
8. The cross-slotted alloy drill bit of claim 2, wherein: the main cutting blade (1), the auxiliary cutting blade (2), the first reinforcing part (3) and the second reinforcing part (4) are all made of tungsten steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121950977.1U CN216028276U (en) | 2021-08-18 | 2021-08-18 | Cross fluting alloy drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121950977.1U CN216028276U (en) | 2021-08-18 | 2021-08-18 | Cross fluting alloy drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216028276U true CN216028276U (en) | 2022-03-15 |
Family
ID=80559611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121950977.1U Active CN216028276U (en) | 2021-08-18 | 2021-08-18 | Cross fluting alloy drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216028276U (en) |
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2021
- 2021-08-18 CN CN202121950977.1U patent/CN216028276U/en active Active
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