CN218439235U - Wear-resistant composite tooth down-the-hole drill bit - Google Patents
Wear-resistant composite tooth down-the-hole drill bit Download PDFInfo
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- CN218439235U CN218439235U CN202222614335.5U CN202222614335U CN218439235U CN 218439235 U CN218439235 U CN 218439235U CN 202222614335 U CN202222614335 U CN 202222614335U CN 218439235 U CN218439235 U CN 218439235U
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Abstract
The utility model relates to a down-the-hole drill bit technical field just discloses a wear-resisting compound tooth down-the-hole drill bit, including the drill bit body, the top of drill bit body is provided with the end, six first mounting holes have evenly been seted up at the top of end, just the top of end is circular distribution and has seven second mounting holes, the equal evenly-sprayed of the whole outer wall of drill bit body has the titanium nitride coating, and the outside evenly-sprayed of titanium nitride coating has diamond micropowder, can improve the hardness on drill bit body surface to improved the wearability of this drill bit body effectively, further improved the life of drill bit body, the equal evenly-sprayed in surface of the surperficial drill bit body of drill bit body and end has the titanium nitride coating, and the outside evenly-sprayed of titanium nitride coating has diamond micropowder, further improved the hardness and the wearability on this drill bit body surface, thereby improve the life of drill bit body, in order to reduce its use cost.
Description
Technical Field
The utility model relates to a down-the-hole drill bit technical field, more specifically relate to a wear-resisting compound tooth down-the-hole drill bit.
Background
Because of their high wear resistance, composite-tooth down-the-hole bits are often used in abrasive rock formations rich in silica sand. Because the composite tooth down-the-hole drill bit body is made of low-carbon alloy structural steel through carburizing heat treatment to improve the fatigue resistance and the surface wear resistance, when the composite tooth down-the-hole drill bit is used in an abrasive rock stratum rich in quartz sand, the down-the-hole drill bit body can be seriously worn, and the service life is lower.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defect of prior art, the utility model provides a wear-resisting compound tooth down-the-hole drill to solve the problem that exists among the above-mentioned background art.
The utility model provides a following technical scheme: the utility model provides a wear-resisting compound tooth down-the-hole drill bit, includes the drill bit body, the top of drill bit body is provided with the end, six first mounting holes have evenly been seted up at the top of end, just the top of end is that circular distribution has seven second mounting holes, the equal even spraying of the whole outer wall of drill bit body has the titanium nitride coating, and the outside even spraying of titanium nitride coating has diamond miropowder, can improve the hardness on drill bit body surface to improve the wearability of this drill bit body effectively, further improved the life of drill bit body.
Furthermore, first chip groove has evenly been seted up to one side outer wall of end, first chip groove staggered distribution in between the first mounting hole, the setting of first chip groove for when drilling, carry out the chip removal work.
Furthermore, the spherical hard alloy head is connected to the inside of the first mounting hole in an embedded mode, the pointed hard alloy head is evenly embedded into the second mounting hole in a embedded mode, the first mounting hole is used for being connected with the spherical hard alloy head in an embedded mode, and the second mounting hole is used for being connected with the pointed hard alloy head in a connected mode, so that drilling work can be conducted conveniently.
Furthermore, six second chip grooves are evenly formed in the middle section of the drill bit body, thread grooves are formed in the bottom of the drill bit body, the second chip grooves are formed, and when drilling is conducted, chips can be conveniently discharged from the second chip grooves, so that drilling work is facilitated.
Furthermore, the spherical hard alloy head and the pointed hard alloy head are both made of hard alloy, and the hard alloy has high hardness, wear resistance, and good strength and toughness, and can effectively perform drilling work.
The utility model discloses a technological effect and advantage:
1. the utility model discloses an inter combination of each part, the equal even spraying in surface of the surface drill bit body of drill bit body and end has the titanium nitride coating, it is high to have hardness, chemical stability is good, the melting point is high, ductility characteristics such as good, can improve the hardness on drill bit body surface, thereby the wearability of this drill bit body has been improved effectively, and the outside even spraying of titanium nitride coating has diamond micropowder, the surperficial hardness and the wearability of this drill bit body have further been improved, thereby improve the life of drill bit body, in order to reduce its use cost.
2. The utility model discloses a setting of first chip groove and second chip groove can be when drilling, and the stone after will smashing is to first mounting hole side discharge to carry out drilling work better, avoid not hard up stone to influence the speed of drilling work, when the rubble was arranged to the outer wall of drill bit body from first mounting hole, accessible second chip groove was discharged unnecessary piece, with the surface and the rubble friction probability that reduce the drill bit body, thereby improve the life of drill bit body effectively.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the whole bottom structure of the present invention.
Fig. 3 is a schematic view of the end structure of the present invention.
Fig. 4 is a schematic view of the end head unfolding structure of the present invention.
Fig. 5 is an overall plan view of the present invention.
The reference signs are: 1. a drill bit body; 2. a tip; 201. a first mounting hole; 202. a first chip discharge groove; 203. a second mounting hole; 3. a spherical cemented carbide tip; 4. a pointed hard alloy tip; 5. a second chip groove; 6. a thread groove.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the drawings of the present invention, and the forms of the structures described in the following embodiments are merely examples, and the present invention is not limited to the structures described in the following embodiments, and all other embodiments obtained by a person skilled in the art without creative work belong to the scope of the present invention.
Referring to fig. 1-5, the utility model provides a wear-resisting compound tooth down-the-hole drill bit, including drill bit body 1, drill bit body 1's top is provided with end 2, six first mounting holes 201 have evenly been seted up at end 2's top, and end 2's top is the circular distribution and has seven second mounting holes 203, the equal evenly-spraying of the whole outer wall of drill bit body 1 has the titanium nitride coating, drill bit body 1's surface has the titanium nitride coating with the equal evenly-spraying in surface of end 2, it is high to have hardness, chemical stability is good, the melting point is high, ductility such as good, can improve drill bit body 1 surperficial hardness, thereby this drill bit body 1's wearability has been improved effectively, and the outside evenly-spraying of titanium nitride coating has the diamond, further improved this drill bit body 1 surperficial hardness and wearability, thereby improve drill bit body 1's life.
Wherein, first chip groove 202 has evenly been seted up to one side outer wall of end 2, and first chip groove 202 staggered distribution is between first mounting hole 201, and the seting up of first chip groove 202 can be when drilling, and the stone after will smashing is discharged to first chip groove 202 side to carry out drilling work better, avoid not hard up stone to influence the speed of drilling work.
Wherein, the inside gomphosis of first mounting hole 201 is connected with spherical carbide head 3, and the even gomphosis in the inside of second mounting hole 203 has pointed carbide head 4, and the setting of spherical carbide head 3 and pointed carbide head 4, the higher wearability of its hardness is stronger, can assist drill bit body 1 to carry out drilling work fast.
Wherein, six second chip grooves 5 have evenly been seted up in drill bit body 1 middle section, and threaded groove 6 has been seted up to the bottom of drill bit body 1, and the setting of threaded groove 6 for be connected with equipment, so that carry out drilling work, and the setting of second chip groove 5, when drilling, can conveniently discharge the piece from second chip groove 5, thereby conveniently carry out drilling work.
Wherein, the spherical hard alloy head 3 and the pointed hard alloy head 4 are both hard alloy, the hard alloy has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly the high hardness and the wear resistance, the hard alloy can basically keep unchanged even at the temperature of 500 ℃, the hard alloy still has high hardness at the temperature of 1000 ℃, and the drilling work can be effectively carried out.
The utility model discloses a theory of operation:
this wear-resisting compound tooth down-the-hole drill bit, drill bit body 1 and end 2 are same whole, the equal evenly sprayed titanium nitride coating of its drill bit body 1's surface and end 2's surface, its coating thickness is 2-6 mu m, have the hardness height, chemical stability is good, the melting point is high, ductility is good etc. characteristics, can improve the hardness on drill bit body 1 surface, simultaneously, the outside spraying of titanium nitride coating has diamond micropowder to further improve the hardness and the wearability on this drill bit body 1 surface, thereby improve the life of drill bit body 1, during the use, the thread groove 6 that accessible drill bit body 1 bottom was seted up, be connected with equipment, and cooperate the inside spherical hard alloy head 3 of inlaying of first mounting hole 201 and the inside sharp shape hard alloy head 4 of inlaying of second mounting hole 203, carry out drilling work.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a wear-resisting compound tooth down-the-hole drill bit, includes drill bit body (1), its characterized in that: the top of drill bit body (1) is provided with end (2), six first mounting holes (201) have evenly been seted up at the top of end (2), just the top of end (2) is that circular distribution has seven second mounting holes (203), the equal evenly-coated of the whole outer wall of drill bit body (1) has the titanium nitride coating, and the outside evenly-coated of titanium nitride coating has diamond micropowder.
2. A wear resistant composite tooth down-the-hole drill bit as set forth in claim 1, wherein: first chip grooves (202) are uniformly formed in the outer wall of one side of the end head (2), and the first chip grooves (202) are distributed among the first mounting holes (201) in a staggered mode.
3. A wear resistant composite tooth down-the-hole drill bit as set forth in claim 1, wherein: the spherical hard alloy head (3) is embedded and connected in the first mounting hole (201), and the pointed hard alloy head (4) is uniformly embedded in the second mounting hole (203).
4. A wear resistant composite tooth down-the-hole drill bit as set forth in claim 1, wherein: six second chip grooves (5) are evenly seted up in drill bit body (1) middle section, just thread groove (6) have been seted up to the bottom of drill bit body (1).
5. A wear resistant composite tooth down-the-hole drill bit as set forth in claim 3, wherein: the spherical hard alloy head (3) and the pointed hard alloy head (4) are both made of hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222614335.5U CN218439235U (en) | 2022-09-30 | 2022-09-30 | Wear-resistant composite tooth down-the-hole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222614335.5U CN218439235U (en) | 2022-09-30 | 2022-09-30 | Wear-resistant composite tooth down-the-hole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439235U true CN218439235U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222614335.5U Active CN218439235U (en) | 2022-09-30 | 2022-09-30 | Wear-resistant composite tooth down-the-hole drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218439235U (en) |
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2022
- 2022-09-30 CN CN202222614335.5U patent/CN218439235U/en active Active
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