CN206233863U - One kind directly returns formula empennage drill bit - Google Patents
One kind directly returns formula empennage drill bit Download PDFInfo
- Publication number
- CN206233863U CN206233863U CN201621357711.5U CN201621357711U CN206233863U CN 206233863 U CN206233863 U CN 206233863U CN 201621357711 U CN201621357711 U CN 201621357711U CN 206233863 U CN206233863 U CN 206233863U
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- drill bit
- drilling
- spiral
- empennage
- afterbody
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Abstract
The utility model is related to one kind directly to return formula empennage drill bit, belongs to rock drilling machinery technical field.It includes drill bit head（1）And drill bit afterbody（2）, the drill bit afterbody（2）On be disposed with the spiral with guide effect and directly return formula empennage（3）, spiral cutting sword（4）And rotation direction is with the consistent spiral sludge groove of drilling system rotation direction（5）.Compared with prior art, the utility model has simple structure, easy to process, has the advantages that drilling linearity is higher, drill tool wear is smaller, row's powder is more smooth in use, so as to improve drilling tool service life, reduces rock drilling cost of labor and drilling tool cost.
Description
Technical field
The utility model is related to one kind directly to return formula empennage drill bit, belongs to rock drilling machinery technical field.
Background technology
With the input energetically of the engineerings such as quarrying, mining, tunnel, the use of drill rod product is more and more extensive.At present
It is generally using the tail structure of more universal top hammer formula drills for stone on rock drilling machinery and easily returns formula cylindrical structural, is passed through
Screw thread is connected composition drilling system with drill steel and is drilled, in drilling process, because drill bit afterbody structure is cylinder, it is impossible to rise
Make to drill to guide effect not straight, it is impossible to meet the boring requirement of Gao Zhidu；Easy bit freezing, special during drilling tool withdrawal
Do not showed in soft rock or machinability Rock penetrating more prominent, bit wear is big, high cost；In addition, though drill bit afterbody is adopted
With easily returning formula structure, there is certain guide effect to drilling, but because tail structure is limited, resistance is larger during powder is arranged, arrange
Powder effect is poor.
Utility model content
In order to overcome defect present in prior art, the purpose of this utility model is to provide a kind of simple structure, add
Work is convenient, drilling linearity is good, row's powder is smooth, abrasion is small, be difficult bit freezing, the straight of long lifespan, low cost returns formula empennage drill bit.
To achieve these goals, the utility model uses following technical scheme：It is a kind of directly to return formula empennage drill bit, including bore
Head portion and drill bit afterbody, are disposed with the spiral with guide effect and directly return formula empennage, spiral and cut in the drill bit afterbody
Sword and rotation direction are cut with the consistent spiral sludge groove of drilling system rotation direction.
The drill bit afterbody diameter is slightly less than or equal to drill bit head diameter.
The utility model has the advantages that due to using above technical scheme：In afterbody, band guiding, righting are set
The straight of effect returns empennage, it is ensured that drilling is eccentric few, greatly improves the linearity of drilling；Set and drill bit thread rotation direction simultaneously
Consistent spiral sludge groove, i.e., the rotation direction of the spiral sludge groove on empennage is consistent with drilling direction so that row's powder is more smooth, carries
Cooling rate high and the abrasion of drilling tool is reduced, extend the service life of drilling tool；The cutting edge of drill bit afterbody is withdrawing
During drilling tool, the rock dropped between drilling rod and hole wall can be effectively cut, it is ensured that the smooth withdrawal of drilling tool, it is to avoid bit freezing reduction chisel
The wear extent of rock efficiency and increase drilling tool, so as to improve rock penetration performance and reduce cost of labor and drilling tool cost.
Compared with prior art, the utility model has simple structure, easy to process, in use with drilling linearity
Higher, drill tool wear is smaller, row's powder is more smooth, so as to improve drilling tool service life, reduces rock drilling cost of labor and brill
Tool cost.
Brief description of the drawings
Fig. 1 is the utility model structural representation；
In figure：Drill bit head 1, drill bit afterbody 2, spiral directly return formula empennage 3, spiral cutting sword 4, spiral sludge groove 5.
Specific embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings：
As shown in figure 1, the straight formula empennage drill bit that returns includes drill bit head 1 and drill bit afterbody 2, set gradually in drill bit afterbody 2
There is the spiral with guide effect directly to return formula empennage 3, spiral cutting sword 4 and rotation direction to be arranged with the consistent spiral of drilling system rotation direction
Powder groove 5.During drilling, empennage 3 is returned because drill bit afterbody band is provided with the straight of righting-oriented effect, it is ensured that the linearity of drilling,
Simultaneously because afterbody is provided with rotation direction with the consistent spiral sludge groove 5 of drilling system rotation direction, more it is beneficial in drilling process
Row's powder, and the repetition Drilling of rock is reduced, while also improving the speed of cooling, the abrasion of drilling tool is reduced, improve brill
The service life of tool；After drilling depth reaches requirement, during withdrawing drilling system, because drill bit afterbody is cut with spiral
Sword 4 is cut, the spiral cutting sword can cut the rock between drilling rod and hole wall, enhance cutting effect during withdrawal so that withdraw
The smooth not bit freezing of drilling tool, it is to avoid bit freezing is impacted to construction speed, so as to improve drilling efficiency.
In order that rock drilling drilling it is more smooth and withdraw drilling tool when spiral cutting sword can efficiently cut drop bore
Rock between bar and hole wall, the diameter of the drill bit afterbody 2 is slightly less than or equal to the diameter of drill bit head 1 so that drilling is more increased
Effect.
Claims (2)
1. one kind directly returns formula empennage drill bit, it is characterised in that：Including drill bit head（1）And drill bit afterbody（2）, the drill bit afterbody
（2）On be disposed with the spiral with guide effect and directly return formula empennage（3）, spiral cutting sword（4）And rotation direction is with drilling tool system
The consistent spiral sludge groove of system rotation direction（5）.
2. formula empennage drill bit is directly returned as claimed in claim 1, it is characterised in that：The drill bit afterbody（2）Diameter be slightly less than or
Equal to drill bit head（1）Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357711.5U CN206233863U (en) | 2016-12-08 | 2016-12-08 | One kind directly returns formula empennage drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357711.5U CN206233863U (en) | 2016-12-08 | 2016-12-08 | One kind directly returns formula empennage drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206233863U true CN206233863U (en) | 2017-06-09 |
Family
ID=58991819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621357711.5U Active CN206233863U (en) | 2016-12-08 | 2016-12-08 | One kind directly returns formula empennage drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206233863U (en) |
-
2016
- 2016-12-08 CN CN201621357711.5U patent/CN206233863U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |