CN2886054Y - Tapered tip cone wedge shaped tooth for roller bit - Google Patents
Tapered tip cone wedge shaped tooth for roller bit Download PDFInfo
- Publication number
- CN2886054Y CN2886054Y CN 200620034216 CN200620034216U CN2886054Y CN 2886054 Y CN2886054 Y CN 2886054Y CN 200620034216 CN200620034216 CN 200620034216 CN 200620034216 U CN200620034216 U CN 200620034216U CN 2886054 Y CN2886054 Y CN 2886054Y
- Authority
- CN
- China
- Prior art keywords
- tooth
- crown
- conical
- center line
- wedge
- 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
Links
Images
Abstract
An indented chisel slope top wedge tooth used in the producing of an indented chisel, which belongs to the design and manufacture field of the indented chisel cutting tooth structure. The tooth crown in the utility model adopts a conical structure, the centerlines between a tooth top and a tooth pole forms an asymmetrical form, a wedge tooth surface is provided on one surface of the asymmetrical conical tooth crown. The conical tooth adopted in the utility model is provided with an anti-rupture strength and a rock breaking ability of the wedge tooth; the wedge tooth surface structure lengthens the cutting blade on the front side of the wedge surface and strengthens the contacting ability when the cutting blade cuts the stratum; the asymmetrical design of the tooth top centerline enables the tooth top of the conical tooth to be supported on the back when cutting the stratum, thereby the conical tooth has a stronger anti-rupture strength and a shock resistance ability than ordinary conical tooth.
Description
Technical field: the inclined to one side top of a kind of rock bit cone wedge shaped tooth, be used for the manufacturing of oil, natural gas and geological drilling with rock bit, belong to rock bit cutting teeth structure Design and manufacturing technology field.
Background technology: Chang Yong hard-metal insert has chisel teeth, conical tooth, hemi-spherical ended shape insert etc. in the prior art, use difform cutting teeth at different formation rock character and drill bit crushing performance, to obtain higher efficiency of breaking rock, the shortcoming of prior art is: though chisel teeth has stronger rock breaking capacity, but because the wedge shape position of chisel teeth is comparatively flat, so its intensity is lower; And conical tooth is comparatively round thick because of the root and the crown of conical tooth, and not easy fracture, so anti-fracture energy is strong, but because its circle is thick, so the ability on wedging stratum is especially crept into bad adaptability in middle soft formation; The weak point of above-mentioned these two kinds of profiles of tooth has influenced cutting teeth life-span of drilling efficiency and drill bit.
Summary of the invention: the purpose of this utility model is the problem that exists at above-mentioned prior art, adopt the thick crown and relative flat crown structure of conical tooth circle, design a kind of inclined to one side top of rock bit cone wedge shaped tooth that the wedge shape crown is set on a face of asymmetrical taper crown.
The utility model is to solve the problems of the technologies described above the technical scheme that is proposed to be: the utility model comprises tooth post, crown, the wedge shape flank of tooth and tooth top; Crown is a conical structure, and the center line of the center line offset teeth post of tooth top forms the center line with the asymmetrical tooth top of tooth post center line; The distance of the center line offset teeth post center line of tooth top is greater than 0; The center line of asymmetrical tooth top has formed the gradient of the gradient of a side on the crown greater than its another relative side, and the side that gradient is little is provided with a wedge shape flank of tooth, and the wedge shape flank of tooth is tangential on tooth top and crown root and constitutes; Tooth top is an arcuate structure, and the arcuate structure radius of curvature of tooth top is 1～10mm; In the enforcement, the lozenges with cone wedge shaped tooth when inserted is arranged on and the consistent direction of bit cone rotation, makes the wedge surface of tooth at first contact the stratum of being cut, and like this, the utility model has just had the intensity of conical tooth root and the rock breaking capacity of chisel teeth simultaneously.
Good effect of the present utility model is, the conical tooth root that adopts has the anti-breaking strength of conical tooth and the rock breaking capacity of chisel teeth, the wedge shape flank of tooth structure of design makes wedge surface front side cutting edge lengthening, strengthened the contact stress on cutting teeth cutting stratum, asymmetrical tooth top center line design makes the tooth top of chisel teeth have the support at the back side when the cutting stratum, therefore has higher anti-breaking strength and impact resistance than common chisel teeth.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is provided with the structural representation of the wedge shape flank of tooth one side for the utility model.
Fig. 3 is a stereogram of the present utility model.
The specific embodiment:
Further specify embodiment of the present utility model below in conjunction with accompanying drawing: the utility model comprises tooth post 4, crown 3, the wedge shape flank of tooth 2 and tooth top 1; Crown 3 is a conical structure, and the center line of the center line offset teeth post 4 of tooth top 1 forms the center line with the asymmetrical tooth top 1 of tooth post 4 center lines; The distance of center line offset teeth post 4 center lines of tooth top 1 is greater than 0, and the distance of center line offset teeth post 4 center lines of tooth top 1 also can be less than 1/2 of tooth column diameter; The center line of asymmetrical tooth top 1 has formed the gradient of the gradient of a side on the crown greater than its another relative side, the angle of side that gradient is big and tooth post 4 buses is greater than the little side of gradient and the angle of tooth post 4 opposite side buses, the side that gradient is little is provided with a wedge shape flank of tooth 2, and the wedge shape flank of tooth 2 is tangential on tooth top 1 and crown 3 roots and constitutes; Tooth top 1 is an arcuate structure, and the arcuate structure radius of curvature of tooth top 1 is 1～10mm; When implementing the utility model, cutting teeth can be made by carbide alloy or superhard wear alloy material; When inserted, the direction that the wedge shape flank of tooth 2 is arranged on and the bit cone rotation is consistent with cone wedge shaped tooth makes the wedge shape flank of tooth 2 at first contact the stratum of being cut, and when drill bit rotated like this, the wedge shape flank of tooth 2 just can keep the cutting stratum; In the process on cutting stratum, the taper crown that the utility model adopts has the anti-breaking strength of conical tooth, and the wedge shape flank of tooth structure of design is widened the cutting edge of the wedge shape flank of tooth, therefore strengthened the contact surface on cutting teeth cutting stratum, asymmetrical tooth top center line design makes the tooth top 1 of chisel teeth and the wedge shape flank of tooth 2 has the back side when the cutting stratum support, therefore has higher anti-breaking strength and impact resistance.
Claims (3)
1. the inclined to one side top of a rock bit cone wedge shaped tooth has tooth post and crown, it is characterized in that:
A. crown is a conical structure, the center line of the center line offset teeth post of tooth top, and the distance of the center line offset teeth post center line of tooth top is greater than 0;
B. the gradient of a side is greater than the gradient of its another relative side on the crown, and the side that gradient is little is provided with a wedge shape flank of tooth, and the wedge shape flank of tooth is tangential on tooth top and crown root;
C. tooth top is an arcuate structure, and its radius of curvature is 1～10mm.
2. the inclined to one side top of a kind of rock bit according to claim 1 cone wedge shaped tooth is characterized in that: the distance of the center line offset teeth post center line of tooth top also can be less than 1/2 of tooth column diameter.
3. the inclined to one side top of a kind of rock bit according to claim 1 cone wedge shaped tooth, it is characterized in that: described cone wedge shaped tooth is made by carbide alloy or superhard wear alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034216 CN2886054Y (en) | 2006-05-18 | 2006-05-18 | Tapered tip cone wedge shaped tooth for roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034216 CN2886054Y (en) | 2006-05-18 | 2006-05-18 | Tapered tip cone wedge shaped tooth for roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886054Y true CN2886054Y (en) | 2007-04-04 |
Family
ID=37961144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620034216 Expired - Fee Related CN2886054Y (en) | 2006-05-18 | 2006-05-18 | Tapered tip cone wedge shaped tooth for roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886054Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527098A (en) * | 2013-11-01 | 2014-01-22 | 上海神开石油化工装备股份有限公司 | Multi-top special-shaped structure alloy tooth |
| CN103758459A (en) * | 2014-01-21 | 2014-04-30 | 西南石油大学 | Tooth form capable of preventing hole wall plastic deformation and mounting method |
-
2006
- 2006-05-18 CN CN 200620034216 patent/CN2886054Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527098A (en) * | 2013-11-01 | 2014-01-22 | 上海神开石油化工装备股份有限公司 | Multi-top special-shaped structure alloy tooth |
| CN103758459A (en) * | 2014-01-21 | 2014-04-30 | 西南石油大学 | Tooth form capable of preventing hole wall plastic deformation and mounting method |
| CN103758459B (en) * | 2014-01-21 | 2016-05-18 | 西南石油大学 | Prevent tooth profile of tooth and the inserting method of hole wall plastic deformation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108661565B (en) | Multi-ridge diamond compact | |
| CN101560869B (en) | Convex head deflective wedge tooth | |
| CN201225096Y (en) | Novel inner concave multiple-wing composite teeth diamond composite sheet drill head | |
| CN2886054Y (en) | Tapered tip cone wedge shaped tooth for roller bit | |
| CN100359126C (en) | Cutter with convex tooth-tip | |
| CN107448149A (en) | Ridged cutting tooth | |
| CN109681125A (en) | A kind of indent ridges diamond compact | |
| CN202431207U (en) | Composite cutting teeth structure for PDC (polycrystalline diamond compact) bit | |
| CN209539273U (en) | A kind of indent ridges diamond compact | |
| CN201588554U (en) | Addendum deviated button bit | |
| CN215718487U (en) | PDC drill bit of ridge non-plane wide-edge cutting teeth | |
| CN2297177Y (en) | New tooth shape for tri-cone rotary drill bit | |
| CN2743526Y (en) | Top deviating wedge shaped teeth | |
| CN201292773Y (en) | PDC drill for drilling flexible and hard interactive strata | |
| CN203248081U (en) | Wide insert cone bit | |
| CN202673157U (en) | Double-cone deflective wedge tooth | |
| CN2677582Y (en) | Convex wedge cutting teeth for roller bit | |
| CN206256883U (en) | Strengthen tooth in a kind of top wide | |
| CN219622639U (en) | Anti-lock diamond compact concave drill bit | |
| CN211573407U (en) | Roller bit with efficient cutting teeth | |
| CN2490305Y (en) | Tooth form for tri-cone rotary drill bit | |
| CN111764829A (en) | Polycrystalline diamond compact for plastic stratum | |
| CN215057149U (en) | Triangular-toothed polycrystalline diamond compact | |
| CN205314922U (en) | Wing formula composite drill bit | |
| CN202249785U (en) | Internally convex four-wing plug bit |
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 |
Granted publication date: 20070404 Termination date: 20150518 |
|
| EXPY | Termination of patent right or utility model |