CN204782788U - Notch cuttype indent multiple wing diamond compact piece drill bit - Google Patents
Notch cuttype indent multiple wing diamond compact piece drill bit Download PDFInfo
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- CN204782788U CN204782788U CN201520560097.1U CN201520560097U CN204782788U CN 204782788 U CN204782788 U CN 204782788U CN 201520560097 U CN201520560097 U CN 201520560097U CN 204782788 U CN204782788 U CN 204782788U
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Abstract
The utility model discloses a notch cuttype indent multiple wing diamond compact piece drill bit, including indent multiple wing diamond compact piece drill bit body, the step of one and half diamond compact piece height is offered to every wing of this drill bit body cutting teeth of all having brazed, every wing outside, forms the stepped ramp type wing, and the stepped ramp type wing department cutting teeth of having brazed, and the welding has two or three broken rock pillar tooth on the inboard indent platform of the wing of indent multiple wing diamond compact piece drill bit, and the water hole has all been offered to broken rock pillar front before every wing and on the indent platform. The utility model discloses remove the ability that has good wearability of PDC drill bit and cutting rock to can there be better efficiency and the life of creeping into in hard and hard rock, thereby reach and expand concave type multiple wing diamond compact piece drill bit accommodation in the hard rock.
Description
Technical field:
The utility model relates to a kind of rock crushing tool, is specifically related to a kind of notch cuttype indent multiple wing diamond compact bit, is mainly used in geological prospecting, mine excavation and gas discharge in mine, spy water, the creeping into of injected hole.
Background technology:
Traditional diamond compact (PDC) indent three wings and four wing bit is mainly adopted at present in exploration, gas discharge in mine and drain hole rockhole, because seam hardness is softer, PDC abrasion resistance is far above carbide alloy, and this PDC drill bit has significant high efficiency and long-life feature than carbide drill before this.Therefore be well used in coal measure strata probing and boring.
Due to indent in the middle of common indent diamond compact bit, in rock break-off process, have rock core all the time extend, cause the advantage of the not easily deflection of holing; Common indent PDC compact bit multiple wing is all in a level, and on every wing, PDC cutting teeth is almost booked wing tip side by side, needs the pressure of the drill larger in causing creeping into; Although PDC diamond compact has higher hardness and abrasion resistance, toughness, impact property are slightly poor, if encounter comparatively hard, hard rock, along with the pressure of the drill continues to increase, PDC composite sheet will be caused to do sth. in advance tipping, damage.In summary it can be seen, though inner concave shape multiple wing PDC drill bit is usually used in gas drainage under suction, visits in the boring such as water and geological prospecting, be more suitable for soft rock, medium ground.
Utility model content:
The purpose of this utility model, in order to expand this indent PDC drill bit to the scope of application of hard rock, provides a kind of notch cuttype indent multiple wing diamond compact bit, reaches and makes such drill bit have good life-span and efficiency in comparatively hard, hard rock.
For achieving the above object, the utility model adopts following technical scheme to realize:
A kind of notch cuttype indent multiple wing diamond compact bit, comprise indent multiple wing diamond compact bit body, the equal soldering of each wing of this drill body has cutting teeth, each wing outermost offers the step of a half diamond compact height, form the stepped ramp type wing, and the place's soldering of the stepped ramp type wing has a cutting teeth, inside the wing of indent multiple wing diamond compact bit, indent platform is welded with two or three broken rock pillar teeth, before each wing and on indent platform, before broken rock pillar tooth, all offers water hole.
The utility model further improves and is: the height of each broken rock pillar tooth is lower than the highest cutting teeth diamond compact height each.
The utility model further improves and is: cutting teeth selects reinforced 1308PDC material to make.
The utility model further improves and is: broken rock pillar tooth adopts 1304PDC composite sheet to make.
The utility model further improves and is: the circumference of this drill body and drilling rod junction offers transitional slope.
The utility model further improves and is: the equal soldering in outside of the cutting teeth of each wing of this drill body has two gauge bars.
The utility model further improves and is: gauge bar selects the diamondite bar of YG8 ~ YG15 specification series to make.
The utility model further improves and is: this drill body is provided with 3 to 6 wings.
Relative to prior art, the utility model has following beneficial effect:
The step of the utility model about each wing outermost cutting teeth declines a half PDC height, becomes the stepped ramp type wing by the original yi word pattern wing.Inside the wing, indent platform breaks rock pillar tooth lower than about the wing the highest cutting teeth PDC height, and this will form such drill bit three layers of ledge structure with wing outermost cutting teeth again.This bit operation cardinal principle is to increase a broken rock scope of freedom to each wing, and like this under same equal pressure, this kind of drill bit can more easily be cut harder rock and not damage, and improves the accommodation and the drilling efficiency that creep into rock stratum; In addition outermost layer cutting teeth is lowerd, be also conducive to protecting the most easily infringement, stressed maximum outermost cutting teeth, thus extend whole drilling life of bit.
Further, drill bit and drilling rod junction, bit body processes a transitional slope outward, small end with want stacks external diameter to be consistent.Effective like this when avoiding drilling rod to be connected with drill bit unexpected diameter become and cause greatly broken landwaste to deposit in this position, occur to embrace the wear phenomenon boring and accelerate junction.
Accompanying drawing illustrates:
Fig. 1 is the front view of four wing bit of the present utility model.
Fig. 2 is the top view of four wing bit of the present utility model.
Detailed description of the invention:
The utility model will be further described below to give conjunction accompanying drawing.
As depicted in figs. 1 and 2, a kind of notch cuttype indent of the utility model multiple wing diamond compact bit, the step each wing outermost cutting teeth of indent four wing diamond compact (PDC) drill bit declined about a half PDC height, the stepped ramp type wing is become by the original yi word pattern wing, inside the wing, indent platform breaks rock pillar tooth lower than about the wing the highest cutting teeth PDC height, and this will form such drill bit three layers of ledge structure with wing outermost cutting teeth again.All cutting teeths 1 of each wing select reinforced 1308PDC material, the diamondite bar of gauge bar 2 material selection YG8 ~ YG15 specification series, to strengthen impact resistance and the gauge ability of flank.Inside wing cutting teeth, indent platform there are two alloys being welded with 1304PDC sheet to break rock pillar tooth 3.Drill bit and drilling rod junction, drill bit processes a transitional slope 5 outward, slope small end with want stacks external diameter to be consistent.Drain hole 4 is equipped with before broken rock pillar tooth, to ensure to bore the wing cooling of rock process and timely chip removal before each wing of drill bit and on indent platform.
It will be understood by those skilled in the art that specific descriptions are above to explain the purpose of this utility model, not for limiting the utility model.Protection domain of the present utility model is by claim and equivalents thereof.
Claims (8)
1. a notch cuttype indent multiple wing diamond compact bit, it is characterized in that: comprise indent multiple wing diamond compact bit body, the equal soldering of each wing of this drill body has cutting teeth (1), each wing outermost offers the step of a half diamond compact height, form the stepped ramp type wing, and the place's soldering of the stepped ramp type wing has a cutting teeth (1), indent platform is welded with two or three broken rock pillar teeth (3) inside the wing of indent multiple wing diamond compact bit, it is broken before each wing and on indent platform that rock pillar tooth (3) is front all offers water hole (4).
2. a kind of notch cuttype indent multiple wing diamond compact bit according to claim 1, is characterized in that: the height of each broken rock pillar tooth (3) is lower than the highest cutting teeth (1) diamond compact height each.
3. a kind of notch cuttype indent multiple wing diamond compact bit according to claim 1, is characterized in that: cutting teeth (1) selects reinforced 1308PDC material to make.
4. a kind of notch cuttype indent multiple wing diamond compact bit according to claim 1, is characterized in that: broken rock pillar tooth (3) adopts 1304PDC composite sheet to make.
5. a kind of notch cuttype indent multiple wing diamond compact bit according to claim 1, is characterized in that: the circumference of this drill body and drilling rod junction offers transitional slope (5).
6. a kind of notch cuttype indent multiple wing diamond compact bit according to claim 1, is characterized in that: the equal soldering in outside of the cutting teeth (1) of each wing of this drill body has two gauge bars (2).
7. a kind of notch cuttype indent multiple wing diamond compact bit according to claim 6, is characterized in that: gauge bar (2) selects the diamondite bar of YG8 ~ YG15 specification series to make.
8. a kind of notch cuttype indent multiple wing diamond compact bit according to claim 1, is characterized in that: this drill body is provided with 3 to 6 wings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520560097.1U CN204782788U (en) | 2015-07-29 | 2015-07-29 | Notch cuttype indent multiple wing diamond compact piece drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520560097.1U CN204782788U (en) | 2015-07-29 | 2015-07-29 | Notch cuttype indent multiple wing diamond compact piece drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782788U true CN204782788U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520560097.1U Active CN204782788U (en) | 2015-07-29 | 2015-07-29 | Notch cuttype indent multiple wing diamond compact piece drill bit |
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| Country | Link |
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| CN (1) | CN204782788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431554A (en) * | 2020-11-03 | 2021-03-02 | 河南理工大学 | Small-bore rock breaking drill bit |
-
2015
- 2015-07-29 CN CN201520560097.1U patent/CN204782788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431554A (en) * | 2020-11-03 | 2021-03-02 | 河南理工大学 | Small-bore rock breaking drill bit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |