CN201826755U - Drilling tool - Google Patents
Drilling tool Download PDFInfo
- Publication number
- CN201826755U CN201826755U CN2010205284276U CN201020528427U CN201826755U CN 201826755 U CN201826755 U CN 201826755U CN 2010205284276 U CN2010205284276 U CN 2010205284276U CN 201020528427 U CN201020528427 U CN 201020528427U CN 201826755 U CN201826755 U CN 201826755U
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- China
- Prior art keywords
- drilling
- drilling tool
- polygon
- combined
- taper
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- 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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Abstract
The utility model belongs to the field of drilling tools, in particular to a drilling tool improving the combined manner. The drilling tool mainly comprises a drilling bit and a drilling rod, wherein a drill top of the drill rod extends into a drilling rod hole of the drill bit; the drilling tip is designed to be a polygon with taper; and the drilling rod hole is designed to be an inner polygon which is combined with the drilling tip and is provided with the taper. In the utility model, with the structure, since the drilling rod and the drilling bit are combined by the polygon with the taper, the connecting strength is higher; meanwhile, with an edge angle structure, the rotating torque force of the drilling tool can be improved and the rotating-bearing force is greatly improved; the drilling tool has a simple structure and firmly-combined effect; and the service life of the drilling tool can be effectively prolonged. The drilling tool can be used for the combination of button type, linear, multi-blade, special drilling tools, and the like and has wide application range and high combination strength.
Description
Technical field
The utility model belongs to the drilling tool field, particularly a kind of a kind of drilling tool in fit system ground that improved.
Background technology
Drilling tool is made of drill steel and hard alloy drill cooperation, is widely used in the preceding pre-drilled cavity of rock explosions such as mine, water conservancy.In recent years, along with the increase of engineering quantity, China's drilling tool industry development was rapid, drilling tool year consumption improve year by year.Drill steel and bore bit generally adopt the cylinder taper fit, and promptly pricker stretches in the puncheon rod hole of bore bit slightly, strong bonded.The employing internal and external threads structure that also has connects, but because in rock drilling, when cutting into a mountain, anti-impact force of having relatively high expectations and revolution holding capacity, and it is poor that above-mentioned fit system bears turning power, causes between the two in conjunction with insecure, influences the normal use of drilling tool.
The utility model content
The purpose of this utility model is to provide a kind of drill steel, bore bit to cooperate firm a kind of drilling tool.
The utility model is achieved in that
A kind of drilling tool mainly is made up of bore bit and drill steel, and the pricker of drill steel stretches in the puncheon rod hole of bore bit slightly, and above-mentioned pricker is designed to have the polygon of tapering slightly, and above-mentioned puncheon rod hole is designed to and the identical slightly inner polygon that has tapering of pricker.
Above-mentioned polygon is regular hexagon or octagon.
After the utility model adopts said structure, because drill steel, bore bit adopt the tapering polygon to cooperate, the bonding strength height, angular structures has effectively improved drilling tool revolution torque simultaneously, bearing turning power improves greatly, have effect simple in structure, that cooperation is firm, effectively prolonged the application life of drilling tool.Can be used for the cooperation of various drilling tools such as ball tooth, in-line, multiple-cutting-edge, abnormity.Applied widely, the bond strength height.
Description of drawings
Fig. 1 is the structural representation of bore bit described in the utility model;
Fig. 2 is the structural representation of drill steel described in the utility model;
Fig. 3 is the lateral view of Fig. 2;
In the accompanying drawing, 1 be bore bit, 2 for puncheon rod hole, 3 for drill steel, 4 for pricker slightly.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
As shown in drawings, the utility model is a kind of drilling tool, mainly is made up of bore bit 1 and drill steel 3, and puncheon rod hole 2 is left in bore bit 1 bottom; Drill steel 3 front ends be pricker slightly 4, the rear end is bit shank, middlely is the body of rod that the body of rod can adopt hexagon or circle.Pricker 4 has certain tapering slightly, and its taper angle generally is designed to＜and 20 °.Pricker 4 Cross-section Design slightly is a polygon, is advisable with regular hexagon, makes it to become the polygon pricker slightly 4 that has tapering.The puncheon rod hole 2 of above-mentioned bore bit 1 is designed to and pricker 4 interior regular hexagons that coincide slightly, also adopts certain tapering, makes it to become the polygon puncheon rod hole 2 that has tapering.The two cooperates by tapering, polygon, has promptly guaranteed the fastness of combination, has improved the revolution holding capacity again.
During use, pricker 4 stretches in the puncheon rod hole 2 slightly, and the two strong bonded has effectively improved application life.
Claims (3)
1. drilling tool, mainly form by bore bit (1) and drill steel (3), the pricker of drill steel (3) (4) slightly stretches in the puncheon rod hole (2) of bore bit (1), it is characterized in that: above-mentioned pricker (4) slightly is designed to have the polygon of tapering, and above-mentioned puncheon rod hole (2) is designed to and pricker (4) inner polygon that has tapering of coincideing slightly.
2. a kind of drilling tool according to claim 1 is characterized in that: above-mentioned polygon is a regular hexagon.
3. a kind of drilling tool according to claim 1 is characterized in that: above-mentioned polygon is an octagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205284276U CN201826755U (en) | 2010-09-15 | 2010-09-15 | Drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205284276U CN201826755U (en) | 2010-09-15 | 2010-09-15 | Drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826755U true CN201826755U (en) | 2011-05-11 |
Family
ID=43965299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205284276U Expired - Fee Related CN201826755U (en) | 2010-09-15 | 2010-09-15 | Drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201826755U (en) |
-
2010
- 2010-09-15 CN CN2010205284276U patent/CN201826755U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20170915 |