Steel body type flat-top drill bit special for drilling basalt

Abstract

The utility model relates to a steel body type flat-top drill bit special for drilling basalt. The steel body type flat-top drill bit comprises a supporting body. The plurality of flat-top drill bits are arranged and are all fixed on the supporting body; and the slag discharging holes are formed in the supporting body. And when the plurality of flat-top drill bits rotate along with the supporting body, the plurality of flat-top drill bits can perform multi-point cutting with a to-be-drilled surface, so that plane drilling is realized. According to the steel body type flat-topped drill bit special for drilling basalt, by arranging the multiple outer flat-topped drill bits and the multiple inner flat-topped drill bits, it can be guaranteed that drilled holes are always cylindrical, secondary milling or countersinking is not needed, the working procedures are saved, and meanwhile it can be guaranteed that the flatness of the hole bottoms is good; the supporting body and the plurality of flat-topped drill bits are made of steel, so that the using hardness of the flat-topped drill bits can be guaranteed, the using cost of the steel is low, and the flat-topped drill bits made of the steel are high in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of drill bit design technology, and specifically relates to a steel-bodied flat-top drill bit for drilling basalt. Background Technology

[0002] Traditional drill bits are tapered or pointed, requiring secondary milling or countersinking after each drilling operation. They also cannot ensure the flatness of the hole bottom. Furthermore, to drill through hard rock layers, existing drill bits typically use a matrix type, which is a drilling tool made by combining diamond particles (or other superhard materials) with a metal matrix through powder metallurgy. This material is too expensive and not widely available in the market, resulting in low practicality of drill bits made of this material. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a steel-bodied flat-top drill bit specifically designed for drilling basalt, comprising: a support body;

[0004] Several flat-top drill bits are provided, all of which are fixed on the support body;

[0005] Several slag discharge holes are provided, all of which are opened on the support body.

[0006] When the plurality of flat-top drill bits rotate with the support body, the plurality of flat-top drill bits can perform multi-point cutting with the surface to be drilled, thereby achieving planar drilling.

[0007] As a further improvement of this utility model, the flat-top drill bit includes multiple outer flat-top drill bits and multiple inner flat-top drill bits. The multiple outer flat-top drill bits are circumferentially fixed to the outer edge of the support body, and the multiple inner flat-top drill bits are uniformly fixed to the end face of the support body.

[0008] As a further improvement of this utility model, the flat-top drill bit is configured as a frustum, and the angle between the axis of several flat-top drill bits and the end face of the support body is 8~10°.

[0009] As a further improvement of this utility model, several flat-top drill bits are arranged in a ring with multiple layers, and each layer has multiple flat-top drill bits arranged around its circumference. The flat-top drill bits between adjacent layers are staggered, and there is an overlapping area between two flat-top drill bits in adjacent layers.

[0010] As a further improvement of this utility model, a material guiding hole is provided in the support body, one end of the material guiding hole is connected to a plurality of slag discharge holes, and the other end of the material guiding hole is connected to the outside.

[0011] As a further improvement of this utility model, several of the slag discharge holes are respectively located in the gaps between several of the flat-top drill bits.

[0012] As a further improvement of this utility model, the material of the support body and the plurality of flat-top drill bits is configured to be steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting multiple external flat-top drill bits and multiple internal flat-top drill bits, it can be ensured that the drilled hole is always cylindrical, eliminating the need for secondary milling or counterboring, saving processes, and ensuring good flatness of the hole bottom;

[0015] By using steel for the support body and several flat-top drill bits, the hardness of the drill bits can be guaranteed, and the cost of using steel is low. Therefore, steel flat-top drill bits are highly practical. Attached Figure Description

[0016] Figure 1 A schematic diagram of a steel-bodied flat-top drill bit specifically designed for drilling basalt.

[0017] Figure 2 A top view schematic diagram of a steel-bodied flat-top drill bit specifically designed for drilling basalt;

[0018] Figure 3 This is a schematic diagram showing the location of the slag discharge holes in a steel-bodied flat-top drill bit specifically designed for drilling basalt.

[0019] Among them, 1. Support body; 21. Outer flat-top drill bit; 22. Inner flat-top drill bit; 11. Material guide hole; 3. Slag discharge hole. Detailed Implementation

[0020] See Figures 1 to 3 As shown, a steel-bodied flat-top drill bit specifically designed for drilling basalt includes: a support body 1; several flat-top drill bits, all fixed on the support body 1; and several slag discharge holes 3, all formed on the support body 1.

[0021] When the plurality of flat-top drill bits rotate with the support body 1, the plurality of flat-top drill bits can perform multi-point cutting with the surface to be drilled, thereby achieving planar drilling.

[0022] During operation, the support body 1 is installed at the output end of the drill. When the drill is started, the support body 1 will drive several flat-top drill bits to rotate synchronously. The several flat-top drill bits will form multi-point cutting with the plane of the hole to be drilled, so that the drilled hole is always cylindrical, eliminating the need for secondary milling or counterboring, saving processes, and ensuring that the bottom of the drilled hole has good flatness.

[0023] In addition, the multiple slag discharge holes 3 enable the cutting slag to be discharged quickly, preventing blockage.

[0024] In a preferred embodiment, the flat-top drill bit includes a plurality of outer flat-top drill bits 21 and a plurality of inner flat-top drill bits 22. The plurality of outer flat-top drill bits 21 are circumferentially fixed to the outer edge of the support body 1, and the plurality of inner flat-top drill bits 22 are uniformly fixed to the end face of the support body 1.

[0025] Specifically, the flat ends of multiple outer flat-top drill bits 21 can cut the material at the edge of the hole to be drilled, and the flat ends of multiple inner flat-top drill bits 22 can cut the material inside the hole to be drilled. Therefore, the multiple outer flat-top drill bits 21 and the multiple inner flat-top drill bits 22 work together to completely cut the material on the hole to be drilled, preventing stress concentration from causing the drill bits to fail.

[0026] In a preferred embodiment, the flat-top drill bit is configured as a frustum, and the angle between the axis of the plurality of flat-top drill bits and the end face of the support body 1 is 8~10°.

[0027] It should be explained that the cutting surfaces of several flat-top drill bits are inclined to the end face of the support body 1. During the cutting process, the inclined flat-top drill bits can gradually enter the surface to be drilled, avoiding the drill bits from getting stuck and being unable to drill continuously.

[0028] In a preferred embodiment, a plurality of the flat-top drill bits are arranged in a ring with multiple layers, each layer having multiple drill bits arranged around its circumference, the flat-top drill bits between adjacent layers are staggered, and there is an overlapping area between two flat-top drill bits in adjacent layers.

[0029] In other words, multi-layer flat-top drill bits can cover the entire area of ​​the hole to be drilled, avoiding unfinished areas and ensuring the integrity of the hole shape.

[0030] In a preferred embodiment, the support body 1 has a material guide hole 11, one end of which is connected to a plurality of slag discharge holes 3, and the other end of which is connected to the outside.

[0031] During the drilling process, the slag cut by several flat-topped drill bits will enter several slag discharge holes 3 respectively, and then converge in the guide hole 11. Finally, the slag will be discharged through the guide hole 11.

[0032] In a preferred embodiment, a plurality of the slag discharge holes 3 are respectively located in the gaps between a plurality of the flat-top drill bits.

[0033] The material and slag drilled by the flat-top drill bit will move upwards adaptively and thus enter the slag discharge hole 3, thereby enabling rapid material discharge and avoiding blockage.

[0034] In a preferred embodiment, the support body 1 and the plurality of flat-top drill bits are made of steel.

[0035] It should be explained that steel has high hardness, making it suitable for both hard and complex rocks, and its low cost makes its use highly practical.

[0036] In practical applications, before drilling, the support body 1 is fixedly installed on the drilling machine. When drilling, the drilling machine is started, and the support body 1 and several flat-top drill bits move down spirally in sync with the drilling machine. The flat ends of the several flat-top drill bits can cut the material on the surface to be drilled at multiple points, so the drilled hole is always cylindrical, without the need for secondary milling or counterboring, saving processes. At the same time, it can ensure good flatness of the bottom of the hole. The cut slag will be guided into the guide hole 11 through several slag discharge holes 3 and discharged to the outside.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be primarily defined by the scope of the claims.

Claims

1. A steel-bodied flat-top drill bit specifically designed for drilling basalt, characterized in that: include: Support (1); Several flat-top drill bits are provided, all of which are fixed on the support body (1); Several slag discharge holes (3) are provided, all of which are opened on the support body (1); When the several flat-top drill bits rotate with the support body (1), they can make multi-point contact with the surface to be drilled, and during the drilling process, the slag will be discharged from the several slag discharge holes (3).

2. The steel-bodied flat-top drill bit for drilling basalt as described in claim 1, characterized in that: The flat-top drill bit is configured as a cylinder, and the axis of several flat-top drill bits forms an angle of 8~10° with the end face of the support body (1); the flat-top drill bit includes multiple outer flat-top drill bits (21) and multiple inner flat-top drill bits (22), the multiple outer flat-top drill bits (21) are circumferentially fixed to the outer edge of the support body (1), and the multiple inner flat-top drill bits (22) are uniformly fixed to the inner end face of the support body (1).

3. A steel-bodied flat-top drill bit for drilling basalt as described in claim 2, characterized in that: The support (1) has a material guide hole (11) inside. One end of the material guide hole (11) is connected to several slag discharge holes (3), and the other end of the material guide hole (11) is connected to the outside.

4. A steel-bodied flat-top drill bit specifically designed for drilling basalt, as described in claim 1, characterized in that: The support body (1) and several flat-top drill bits are made of steel.

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