CN204024489U - A kind of PDC matrix drill bits - Google Patents
A kind of PDC matrix drill bits Download PDFInfo
- Publication number
- CN204024489U CN204024489U CN201420508188.6U CN201420508188U CN204024489U CN 204024489 U CN204024489 U CN 204024489U CN 201420508188 U CN201420508188 U CN 201420508188U CN 204024489 U CN204024489 U CN 204024489U
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- cutting teeth
- wing
- drill bits
- location division
- pdc
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Abstract
The utility model relates to a kind of PDC matrix drill bits, comprise bit matrix, wing, runner and cutting teeth, on described bit matrix, be provided with described wing, described wing comprises cutting portion and gauge portion, one end of described gauge portion is connected with one end of described cutting portion, it is characterized in that, be positioned on the described cutting teeth of drill end and be provided with location division.PDC matrix drill bits of the present utility model owing to being provided with location division being positioned on the cutting teeth of drill end, can limit the penetraction depth of cutting teeth like this when running into compared with soft formation, makes the penetraction depth uniformity of cutting teeth; Because the external shape of location division external shape and cutting teeth is similar, in the penetraction depth of restriction cutting teeth, can not make drill bit occur the situation of whirling motion or irregular oscillation simultaneously.PDC matrix drill bits of the present utility model has guaranteed the stability of bit cutting process in the situation that guaranteeing drill bit penetraction depth uniformity.
Description
Technical field
The utility model relates to a kind of PDC matrix drill bits.
Background technology
PDC drill bit (Polycrystalline Diamond Compact bit) is the abbreviation of polycrystalline diamond compact bit, is the conventional a kind of drilling tool of geological drilling industry.Drill bit tends to run into interlayer or one section of soft one section of hard situation when cutting stratum, and drill bit cannot independently judge when running into this situation.If do not regulate in time the pressure of the drill when running into compared with soft formation, the incision stratum that the cutting teeth on drill bit can be too much so, can make the PDC dental transition on drill bit easily burst apart like this.In order to make cutting teeth incision stratum uniformity, in prior art, conventionally can reduce tooth proud exposure or increase the angle of center cone.Above-mentioned two kinds of modes all can make the stability of drill bit greatly reduce after having reduced proud exposure and having increased center cone angle, stability of bit can make drill bit occur the situation of whirling motion or irregular oscillation after reducing, make bit teeth be more prone to be impacted, reduce bit life.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of PDC matrix drill bits, can when reducing tooth proud exposure, guarantee the stability of drill bit.
The PDC matrix drill bits that the utility model provides, comprise bit matrix, wing, runner and cutting teeth, on described bit matrix, be provided with described wing, described wing comprises cutting portion and gauge portion, described cutting teeth is horizontally installed on the front end of described wing cutting portion, be partially submerged in described wing, one end of described gauge portion is connected with one end of described cutting portion, and extend vertically on described bit matrix, between adjacent described wing, form described runner, it is characterized in that, be positioned on the described cutting teeth of drill end and be provided with location division.
Preferably, described cutting teeth is cylindric, its front end face is circular flat, when described cutting teeth is embedded on described wing, its longitudinal axis and described wing inlay this cutting teeth place side place circumferential direction at an angle, the profile of described location division is roughly cylindric, and the described cutting teeth front end face certain distance of front end distance of described location division is arranged on the radial outside of described cutting teeth.
Preferably, it is parallel that the outer rim of the radial outside of described location division and described wing are inlayed the circumferential direction of side at this cutting teeth place.
Preferably, between described cutting teeth outermost radial outside and the radially outer edge of the described location division that is located thereon, there is certain distance.
Preferably, described distance is 1～2 millimeter.
Preferably, the rear end of described location division and the rear end of described cutting teeth are concordant or be positioned at a distance, rear portion of the rear end of described cutting teeth.
Preferably, described wing has a plurality of, all spiral being distributed on described bit matrix.
Preferably, described cutting teeth is welded on the front end of described wing cutting portion.
Preferably, the angle ranging from 15～25 degree.
PDC matrix drill bits of the present utility model, owing to being provided with location division being positioned on the cutting teeth of drill end, between described cutting teeth outermost radial outside and the radially outer edge of the described location division that is located thereon, there is certain distance, can when running into compared with soft formation, limit the penetraction depth of cutting teeth like this, make the penetraction depth uniformity of cutting teeth; Because the external shape of location division external shape and cutting teeth is similar, in the penetraction depth of restriction cutting teeth, can not make drill bit occur the situation of whirling motion or irregular oscillation simultaneously.PDC matrix drill bits of the present utility model has guaranteed the stability of bit cutting process in the situation that guaranteeing drill bit penetraction depth uniformity.
Accompanying drawing explanation
By the description to the utility model embodiment referring to accompanying drawing, above-mentioned and other objects of the present utility model, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is the utility model PDC matrix drill bits overall schematic;
Fig. 2 is the utility model PDC matrix drill bits top view;
Fig. 3 is the utility model PDC matrix drill bits top cut tooth sectional view.
The specific embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present utility model is described in more detail.In each accompanying drawing, identical element adopts same or similar Reference numeral to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
Illustrate: in the application, when drill bit is in running order, described bit towards direction be the place ahead, a side contrary with rotating institute's direction is rear, be positioned on the above wing of direction of rotation preceding one side for above, with the one side intersecting above, be positioned at radial outside be side, described above with intersection, the side front end that is wing; The direction that radially refers to indication outside approximate centre position from drill bit wing external surface place curved surface is along subsequent corrosion to curved surface in the application.
As shown in Figure 1, PDC matrix drill bits of the present utility model, comprises bit matrix 1, wing 2, runner 3, cutting teeth 4.On described bit matrix 1, be provided with described wing 2, preferably, described wing 2 has a plurality of, all spiral being distributed on described bit matrix 1.Described wing 2 comprises cutting portion 21 and gauge portion 22, on described cutting portion 21, be provided with described cutting teeth 4, the material of described cutting teeth 4 is PDC, described cutting teeth 4 is horizontally installed on the front end of described wing cutting portion 21, be partially submerged in described wing 2, be welded on described wing, for cutting stratum.One end of described gauge portion 22 is connected with one end of described cutting portion 21, and extends vertically on described bit matrix 1.Between adjacent described wing 2, form described runner 3.
As Figure 1-3, described cutting teeth 4 is cylindric, its front end face is circular flat, when cutting teeth 4 is embedded on described wing, its longitudinal axis and described wing 2 are inlayed the circumferential direction Ф at an angle at the side place at this cutting teeth place, preferably, angle Ф is 20 degree, is convenient to so described cutting teeth 4 and is positioned at the cutting of outermost seamed edge to stratum.Be positioned on the described cutting teeth 4 of drill end and be provided with location division 41.The profile of described location division 41 is roughly cylindric, front end distance described cutting teeth 4 front end face a distance of described location division 41 are arranged on the radial outside of described cutting teeth, and it is parallel that the outer rim of the radial outside of described location division 41 and described wing 2 are inlayed the circumferential direction of side at this cutting teeth place.Between described cutting teeth 4 outermost radial outside and the radially outer edge of the described location division 41 that is located thereon, have certain distance H, in a preferred embodiment, this H is 1.5 millimeters.The rear end of the rear end of described location division 41 and described cutting teeth 4 is concordant or be positioned at a distance, rear portion of the rear end of described cutting teeth 4.
PDC matrix drill bits of the present utility model, owing to being provided with location division 41 being positioned on the cutting teeth 4 of drill end, between described cutting teeth 4 outermost radial outside and the radially outer edge of the described location division 41 that is located thereon, there is certain distance, can when running into compared with soft formation, limit the penetraction depth of cutting teeth like this, make the penetraction depth uniformity of cutting teeth; Because the external shape of location division 41 external shape and cutting teeth 4 is similar, in the penetraction depth of restriction cutting teeth, can not make drill bit occur the situation of whirling motion or irregular oscillation simultaneously.PDC matrix drill bits of the present utility model has guaranteed the stability of bit cutting process in the situation that guaranteeing drill bit penetraction depth uniformity.
Finally it should be noted that: obviously, above-described embodiment is only for the utility model example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being amplified out thus or change are still among protection domain of the present utility model.
Claims (9)
1. a PDC matrix drill bits, comprise bit matrix, wing, runner and cutting teeth, on described bit matrix, be provided with described wing, described wing comprises cutting portion and gauge portion, described cutting teeth is horizontally installed on the front end of described wing cutting portion, be partially submerged in described wing, one end of described gauge portion is connected with one end of described cutting portion, and extend vertically on described bit matrix, between adjacent described wing, form described runner, it is characterized in that, be positioned on the described cutting teeth of drill end and be provided with location division.
2. PDC matrix drill bits according to claim 1, it is characterized in that, described cutting teeth is cylindric, its front end face is circular flat, when described cutting teeth is embedded on described wing, its longitudinal axis and described wing inlay this cutting teeth place side place circumferential direction at an angle, the profile of described location division is roughly cylindric, the described cutting teeth front end face certain distance of front end distance of described location division is arranged on the radial outside of described cutting teeth.
3. PDC matrix drill bits according to claim 2, is characterized in that, it is parallel that the outer rim of the radial outside of described location division and described wing are inlayed the circumferential direction of side at this cutting teeth place.
4. according to the PDC matrix drill bits described in claim 2 or 3, it is characterized in that thering is certain distance between described cutting teeth outermost radial outside and the radially outer edge of the described location division that is located thereon.
5. PDC matrix drill bits according to claim 4, is characterized in that, described distance is 1～2 millimeter.
6. PDC matrix drill bits according to claim 4, is characterized in that, the rear end of described location division is concordant with the rear end of described cutting teeth or be positioned at a distance, rear portion of the rear end of described cutting teeth.
7. PDC matrix drill bits according to claim 4, is characterized in that, described wing has a plurality of, all spiral being distributed on described bit matrix.
8. PDC matrix drill bits according to claim 4, is characterized in that, described cutting teeth is welded on the front end of described wing cutting portion.
9. PDC matrix drill bits according to claim 2, is characterized in that, the angle ranging from 15～25 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508188.6U CN204024489U (en) | 2014-09-04 | 2014-09-04 | A kind of PDC matrix drill bits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508188.6U CN204024489U (en) | 2014-09-04 | 2014-09-04 | A kind of PDC matrix drill bits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024489U true CN204024489U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508188.6U Active CN204024489U (en) | 2014-09-04 | 2014-09-04 | A kind of PDC matrix drill bits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024489U (en) |
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2014
- 2014-09-04 CN CN201420508188.6U patent/CN204024489U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |