CN204082013U - A kind of three inclined-plane hammer drilling bit end face structures - Google Patents
A kind of three inclined-plane hammer drilling bit end face structures Download PDFInfo
- Publication number
- CN204082013U CN204082013U CN201420452756.5U CN201420452756U CN204082013U CN 204082013 U CN204082013 U CN 204082013U CN 201420452756 U CN201420452756 U CN 201420452756U CN 204082013 U CN204082013 U CN 204082013U
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- China
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- plane
- axis side
- crossing
- drill axis
- middle bevels
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of three inclined-plane hammer drilling bit end face structures.Described bit face is made up of central plane, interior inclined-plane, middle bevels, outer inclined-plane and the drill body conical surface, and described central plane is a circular flat, is arranged on drill body end face center; Described interior inclined-plane is an anchor ring, and this interior inclined-plane is crossing with central plane near drill axis side, crossing with middle bevels away from drill axis side; Described middle bevels is an anchor ring, and this middle bevels is crossing with interior inclined-plane near drill axis side, crossing with outer inclined-plane away from drill axis side; Described outer inclined-plane is an anchor ring, and this outer inclined-plane is crossing with middle bevels near drill axis side, extends to the drill body conical surface away from drill axis side.The utility model structure is simple, reduce heel teeth stressed, prevent heel teeth come off broken tooth broken teeth, extend drilling life of bit.
Description
Technical field
The utility model relates to a kind of three inclined-plane hammer drilling bits, particularly relates to a kind of three inclined-plane hammer drilling bit end face structures.
Background technology
Gas drilling is as the focus received much concern in world's oil and gas industry, and the main advantage compared with conventional drilling is that its rate of penetration can improve 4 ~ 8 times, maximumly even brings up to 14 times.Gas drilling has many good qualities: improve rate of penetration, reduce drilling cost, improve wellbore quality and eliminate cuttings hold-down effect etc.
Known at present, the air hammer drill bit of gas drilling, general employing monocline face and central plane structure.Facts have proved adopt that the heel teeth of the hammer drilling bit of this frame mode (hard-metal insert that inclined-plane is inlayed) comes off, broken tooth and broken teeth serious, because of heel teeth lost efficacy that ratio that the hammer drilling bit that causes lost efficacy lost efficacy up to hammer drilling bit 90%, reduce the application life of hammer drilling bit, add the cost of gas drilling, have a strong impact on the drilling efficiency of gas drilling.
Utility model content
The utility model in order to overcome the above problems provide a kind of structure simple, reduce heel teeth stressed, prevent heel teeth come off broken tooth broken teeth, extend three inclined-plane hammer drilling bit end face structures of drilling life of bit.
The technical solution of the utility model is: described bit face is made up of central plane, interior inclined-plane, middle bevels, outer inclined-plane and the drill body conical surface, and described central plane is a circular flat, is arranged on drill body end face center; Described interior inclined-plane is an anchor ring, and this interior inclined-plane is crossing with central plane near drill axis side, crossing with middle bevels away from drill axis side; Described middle bevels is an anchor ring, and this middle bevels is crossing with interior inclined-plane near drill axis side, crossing with outer inclined-plane away from drill axis side; Described outer inclined-plane is an anchor ring, and this outer inclined-plane is crossing with middle bevels near drill axis side, extends to the drill body conical surface away from drill axis side.
Surface normal and the drill axis angle on described outer inclined-plane, middle bevels, interior inclined-plane diminish gradually.
When the outer chamfered surface normal direction of the utility model is identical with the incline angle of side teeth of monocline face hammer drilling bit with drill axis angle, the outer chamfered edge tine angle of three inclined-plane hammer drilling bits is just less than the incline angle of side teeth of monocline face hammer drilling bit relative to the ball tine angle on middle bevels and interior inclined-plane, three ramp structures of the present utility model like this overcome the larger problem of existing monocline face drill bit incline angle of side teeth, improve the problem that heel teeth work force-bearing situation is severe, reduce that heel teeth comes off, the possibility of broken tooth and broken teeth, improve the application life of hammer drilling bit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 be in Fig. 1 A to structural representation.
In figure, 1 is drill body, and 2 is outer inclined-planes, and 3 is middle bevels, and 4 is interior inclined-planes, and 5 is central planes, and 6 is drill body conical surfaces.
Detailed description of the invention
A kind of three inclined-plane hammer drilling bit end face structures, described bit face is made up of central plane 5, interior inclined-plane 4, middle bevels 3, outer inclined-plane 2 and the drill body conical surface 6, and described central plane 5 is a circular flat, is arranged on drill body 1 end face center; Described interior inclined-plane 4 is an anchor ring, and this interior inclined-plane 4 is crossing with central plane 5 near drill axis side, crossing with middle bevels 3 away from drill axis side; Described middle bevels 3 is an anchor ring, and this middle bevels 3 is crossing with interior inclined-plane 4 near drill axis side, away from drill axis side crossing with outer inclined-plane 2; Described outer inclined-plane 2 is an anchor ring, and this outer inclined-plane 2 is crossing with middle bevels 3 near drill axis side, extends to the drill body conical surface 6 away from drill axis side.
Surface normal and the drill axis angle on described outer inclined-plane 2, middle bevels 3, interior inclined-plane 4 diminish gradually.
Claims (2)
1. an inclined-plane hammer drilling bit end face structure, it is characterized in that: described bit face is made up of central plane, interior inclined-plane, middle bevels, outer inclined-plane and the drill body conical surface, described central plane is a circular flat, is arranged on drill body end face center; Described interior inclined-plane is an anchor ring, and this interior inclined-plane is crossing with central plane near drill axis side, crossing with middle bevels away from drill axis side; Described middle bevels is an anchor ring, and this middle bevels is crossing with interior inclined-plane near drill axis side, crossing with outer inclined-plane away from drill axis side; Described outer inclined-plane is an anchor ring, and this outer inclined-plane is crossing with middle bevels near drill axis side, extends to the drill body conical surface away from drill axis side.
2. a kind of three inclined-plane hammer drilling bit end face structures according to claim 1, is characterized in that: surface normal and the drill axis angle on described outer inclined-plane, middle bevels, interior inclined-plane diminish gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452756.5U CN204082013U (en) | 2014-08-12 | 2014-08-12 | A kind of three inclined-plane hammer drilling bit end face structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452756.5U CN204082013U (en) | 2014-08-12 | 2014-08-12 | A kind of three inclined-plane hammer drilling bit end face structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082013U true CN204082013U (en) | 2015-01-07 |
Family
ID=52174744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420452756.5U Expired - Fee Related CN204082013U (en) | 2014-08-12 | 2014-08-12 | A kind of three inclined-plane hammer drilling bit end face structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082013U (en) |
-
2014
- 2014-08-12 CN CN201420452756.5U patent/CN204082013U/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: 20150107 Termination date: 20170812 |