CN202431209U - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- CN202431209U CN202431209U CN2011205006400U CN201120500640U CN202431209U CN 202431209 U CN202431209 U CN 202431209U CN 2011205006400 U CN2011205006400 U CN 2011205006400U CN 201120500640 U CN201120500640 U CN 201120500640U CN 202431209 U CN202431209 U CN 202431209U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drill
- drilling rod
- drill stem
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model discloses a drill bit which comprises a drill stem. Spiral grooves are arranged on the lateral wall of the drill stem. The upper end of the drill stem is provided with a drill bit mounting hole. The lower end of the drill stem is provided with a drill stem holder. The drill stem holder is provided with four rotary retaining plates, and the rotary retaining plates are all bent to one direction to form a wind wheel. The drill bit is fine in drilling performance and low in production cost.
Description
Technical field
The utility model relates to a kind of drill bit.
Background technology
Drill bit is to go out through hole or blind hole in order to drilling on solid material, and can be to the cutter of existing hole reaming.Drill bit commonly used mainly contains fluted drill, chit drill, centre drill, depth drill and cylindrical drill.Though reamer and counterbit can not be holed, also they are included into one type on drill bit traditionally on solid material.
To the exploitation in mine, lack more effectively drill bit in the existing technology, the utility model provides a kind of simple drill bit rational in infrastructure.
The utility model content
The utility model provides a kind of excellent cutting performance, drill bit that cost of production is low.
The utility model technical solution problem provides following scheme:
A kind of drill bit comprises drilling rod, it is characterized in that: the sidewall of said drilling rod is provided with spiral grooves, and the upper end of said drilling rod has the drill bit installing hole, and the lower end of said drilling rod is provided with safety chuck, and said safety chuck has four butterflys.
Said each butterfly is bent to form windmill to a direction.
During the utility model mining operations, drill bit rotates with vertical shaft, moves axially simultaneously.Ore is cut under the moment of torsion of drill bit and responsive to axial force, under the extruding of working-blade and centrifugal action, is raveled, form debris flow and press to the hole wall, simultaneously along page elevator to the face of land.When rock glacier moves to when not having the hole wall and stopping the place and since the centrifugal action rubble thrown the hole around, accomplish recovery process.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Referring to accompanying drawing; A kind of drill bit comprises drilling rod 1, and the sidewall of said drilling rod 1 is provided with spiral grooves 2; The upper end of said drilling rod 1 has drill bit installing hole 3; The lower end of said drilling rod 1 is provided with safety chuck 4, and 1 on said drilling rod has four butterflys 5, and said each butterfly 5 is bent to form windmill to a direction.
Claims (2)
1. a drill bit comprises drilling rod, it is characterized in that: the sidewall of said drilling rod is provided with spiral grooves, and the upper end of said drilling rod has the drill bit installing hole, and the lower end of said drilling rod is provided with safety chuck, and said safety chuck has four butterflys.
2. according to the said drill bit of claim 1, it is characterized in that: said each butterfly is bent to form windmill to a direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205006400U CN202431209U (en) | 2011-12-06 | 2011-12-06 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205006400U CN202431209U (en) | 2011-12-06 | 2011-12-06 | Drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431209U true CN202431209U (en) | 2012-09-12 |
Family
ID=46780669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205006400U Expired - Fee Related CN202431209U (en) | 2011-12-06 | 2011-12-06 | Drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202431209U (en) |
-
2011
- 2011-12-06 CN CN2011205006400U patent/CN202431209U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20121206 |