CN201148840Y - Sharp tooth compact bit - Google Patents
Sharp tooth compact bit Download PDFInfo
- Publication number
- CN201148840Y CN201148840Y CNU2007201780468U CN200720178046U CN201148840Y CN 201148840 Y CN201148840 Y CN 201148840Y CN U2007201780468 U CNU2007201780468 U CN U2007201780468U CN 200720178046 U CN200720178046 U CN 200720178046U CN 201148840 Y CN201148840 Y CN 201148840Y
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- Prior art keywords
- tooth
- profile
- composite sheet
- profiles
- bit
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Abstract
The utility model discloses a sharp tooth composite piece drill bit comprises profile of tooth composite piece (1), drill bit matrix (2), the steel body (3), guarantor footpath glomerocryst (4), profile of tooth composite piece support (5), composite piece diamond layer (6), composite piece back lining (7), main face of weld (8) and vice face of weld (9). The tooth-shaped composite sheets (1) are brazed on the drill bit matrix (2) by silver and copper and are arranged on the drill bit matrix in a staggered mode. The tooth-shaped structure form of the tooth-shaped composite sheet (1) is a one-tooth form, a two-tooth form, a three-tooth form, a four-tooth form, a five-tooth form or a six-tooth form. Compared with the shape-selecting structural form of the tooth-shaped composite sheet, the structural form of the rear support (5) of the tooth-shaped composite sheet is a tooth shape, a double tooth shape, a triple tooth shape, a quadruple tooth shape, a quintet tooth shape or a hexa tooth shape. The utility model discloses a sharp tooth compound piece can effectively reduce the cutting in-process, and the rock is to the wearing and tearing of the compound piece of profile of tooth to the life of the compound piece drill bit of extension profile of tooth.
Description
Technical field
The utility model belongs to oil and used for geological prospecting instrument, especially creeps into a kind of pointed tooth compact bit of fine and close hard rock and other high resiliency tight rock.
Background technology
Cutting element on the existing compact bit (composite sheet) all is circular, and when creeping into fine and close hard elastic rock, cutting element is difficult to be pressed into rock, forms nonvolatil broken the hole, and it is extremely low to show as drilling efficiency, is perplexing probing circle for a long time always.
Domestic patent 02221203.5 (mandate on January 7th, 2004), content is that the size of the negative rake of each position composite sheet on the drill bit wing has nothing in common with each other, but increase gradually to well from the negative rake of the outside composite sheet of center line of bit, domestic patent 00203712.2 (mandate on January 3 calendar year 2001), content is on the bonding surface of cemented carbide substrate and diamond layer crescent shaped groove to be arranged, increase the thickness and the diamond content of diamond layer, improve the wearing and tearing ability of composite sheet, to improve the drilling speed and the life-span of drill bit.
They all have following shortcoming, the one, compact bit is only considered the abrasion resistance of composite sheet, do not consider the drilling speed of drill bit, the 2nd, only consider the structure in the intermediate layer of composite sheet and carbide alloy, do not study the incision mechanism of composite sheet in the hard elastic rock of densification, the cutting tip structure is not proposed new structure.
Summary of the invention
The purpose of this utility model provides a kind of pointed tooth compact bit, a kind of tooth-shape structure composite sheet that can cut the hard high resiliency rock of densification, on drill bit, be staggered, middle profile of tooth composite sheet at first plows a groove, the stress of release aperture bed rock stone, the hole bed rock stone that the profile of tooth composite sheet shear strength of both sides (interior outside) has weakened is to reach the purpose that improves drilling speed.
The technical solution of the utility model is: a kind of pointed tooth compact bit, comprise profile of tooth composite sheet, bit matrix, steel body, and protect directly and support composite sheet diamond layer, composite sheet backsight, main solder side, secondary solder side after glomerocryst, the profile of tooth composite sheet.It is characterized in that profile of tooth composite sheet (1) is brazed on the bit matrix (2) with silver-bearing copper, and on bit matrix, be staggered.
Described profile of tooth composite sheet has following 6 kinds of tooth-shape structures: a tooth, bidentate, three teeth, four teeth, five teeth and 6 kinds of form of structure of six teeth.
(1) one profile of tooth composite sheet, the composite sheet cutting tip, being a profile of tooth wedge angle is 90 °, negative 5 ° cutting angle;
(2) two profile of tooth composite sheet, the composite sheet cutting tip, being two profile of tooth wedge angles is 45 °, negative 7 ° cutting angle;
(3) three profile of tooth composite sheet, the composite sheet cutting tip, being three profile of tooth wedge angles is 60 °, negative 7 ° cutting angle;
(4) four profile of tooth composite sheet, the composite sheet cutting tip, being four profile of tooth wedge angles is 60 °, negative 10 ° cutting angle;
(5) five profile of tooth composite sheet, the composite sheet cutting tip, being five profile of tooth wedge angles is 45 °, negative 12 ° cutting angle;
(6) six profile of tooth composite sheet, the composite sheet cutting tip, being six profile of tooth wedge angles is 30 °, negative 15 ° cutting angle;
With respect to profile of tooth composite sheet type selecting form of structure, the form of structure that supports (5) after the described profile of tooth composite sheet is a profile of tooth, two profiles of tooth, three profiles of tooth, four profiles of tooth, five profiles of tooth or six profiles of tooth.
The utility model compared with prior art has following beneficial effect:
The utility model adopts the pointed tooth composite sheet, can effectively reduce in the working angles, and rock is to the wearing and tearing of profile of tooth composite sheet, thus the application life of prolongation profile of tooth compact bit.
Description of drawings
Fig. 1 is a pointed tooth compact bit structural representation of the present utility model;
Among Fig. 1: profile of tooth composite sheet 1, bit matrix 2, steel body 3, protect support 5 after footpath glomerocryst 4, the profile of tooth composite sheet, composite sheet diamond layer 6, composite sheet backsight 7, main solder side 8, secondary solder side 9
Fig. 2 is the profile of tooth compact structure schematic diagram that pointed tooth compact bit of the present utility model is used;
Fig. 3 is the two profile of tooth compact structure schematic diagrames that pointed tooth compact bit of the present utility model is used;
Fig. 4 is the three profile of tooth compact structure schematic diagrames that pointed tooth compact bit of the present utility model is used;
Fig. 5 is the four profile of tooth compact structure schematic diagrames that pointed tooth compact bit of the present utility model is used;
Fig. 6 is the five profile of tooth compact structure schematic diagrames that pointed tooth compact bit of the present utility model is used;
Fig. 7 is the six profile of tooth compact structure schematic diagrames that pointed tooth compact bit of the present utility model is used;
Fig. 8 is a braced structures schematic diagram after the pointed tooth compact bit one profile of tooth composite sheet of the present utility model;
Fig. 9 is a braced structures schematic diagram after the pointed tooth compact bit three profile of tooth composite sheet of the present utility model;
Figure 10 is a braced structures schematic diagram after the pointed tooth compact bit four profile of tooth composite sheet of the present utility model;
Figure 11 is a braced structures schematic diagram after the composite sheet of prior art;
The specific embodiment
Below in conjunction with accompanying drawing technology contents of the present utility model and embodiment are further specified
Being positioned at bit matrix 2 tops by profile of tooth composite sheet 1 as can be seen among Fig. 1 welds with the silver-bearing copper soldering, and on bit matrix, be staggered, bit matrix 2 bottoms and steel body 3 join, and protect the outside that footpath glomerocryst 4 is positioned at bit matrix 2, support 5 after the profile of tooth composite sheet and are connected with bit matrix 2; Composite sheet diamond layer 6, composite sheet backsight 7 are one with bit matrix 2, the vital part of this type drill bit is the profile of tooth composite sheet, be furnished with 4 to tens profile of tooth composite sheet on the drill bit, the profile of tooth composite sheet can be a profile of tooth, two profiles of tooth on the layout of bit matrix 2, three profiles of tooth, four profiles of tooth, five profiles of tooth, six profiles of tooth.
One profile of tooth composite sheet, two profile of tooth composite sheet, three profile of tooth composite sheet, four profile of tooth composite sheet, five profile of tooth composite sheet or the six profile of tooth composite sheet of the be arranged as single structure form of profile of tooth composite sheet 1 on bit matrix 2.
Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 are the utility model pointed tooth compact structure schematic diagrames.Represented the profile of tooth composite sheet of six kinds of structures among 6 figure, a tooth, bidentate, three teeth, four teeth, five teeth, six profile of tooth composite sheet are welded in the bit matrix 2 among Fig. 1 respectively, produce multiple profile of tooth compact bit.
Can find out among Fig. 8, Fig. 9, Figure 10 that supporting 5 after the profile of tooth composite sheet matches with the profile of tooth of profile of tooth composite sheet, its structure is a profile of tooth, two profiles of tooth, three profiles of tooth, four profiles of tooth, five profiles of tooth or six profiles of tooth.The profile of tooth composite sheet is put into the cave, location of supporting 5 fronts after the profile of tooth composite sheet, weld and consolidate supporting 5 main solder side 8 and secondary solder side 9 after the composite sheet backsight 7 of profile of tooth composite sheet and the profile of tooth composite sheet with the method for silver-bearing copper soldering.
The utility model pointed tooth composite sheet is arranged with three kinds of arrangement modes on bit matrix 2, a profile of tooth and two profile of tooth composite sheet are staggered, and three profiles of tooth and four profile of tooth composite sheet are staggered, and five profiles of tooth and six profile of tooth composite sheet are staggered.
Figure 11 is a braced structures schematic diagram after the composite sheet of prior art.
Described above is the profile of tooth composite sheet of the utility model zygodont compact bit and the improvement of corresponding drill bit structure, weld strength is that just the same ground is firm with the weld strength between conventional circular composite sheet and the carcass between its profile of tooth composite sheet and the bit matrix, the phenomenon that the profile of tooth composite sheet comes off can not take place in drilling process, therefore, drill bit not only improves drilling speed because of the employing of composite sheet, and because of the weld strength height, the wear-resisting high temperature resistance of composite sheet, bit life also can increase substantially.
Claims (3)
1, a kind of pointed tooth compact bit, form by support (5), composite sheet diamond layer (6), composite sheet backsight (7), main solder side (8), secondary solder side (9) after profile of tooth composite sheet (1), bit matrix (2), steel body (3), guarantor footpath glomerocryst (4), the profile of tooth composite sheet, it is characterized in that profile of tooth composite sheet (1) is brazed on the bit matrix (2) with silver-bearing copper, and on bit matrix, be staggered; The tooth-shape structure form of described profile of tooth composite sheet (1) is a profile of tooth, two profiles of tooth, three profiles of tooth, four profiles of tooth, five profiles of tooth or six profiles of tooth; With respect to profile of tooth composite sheet type selecting form of structure, the form of structure that supports (5) after the described profile of tooth composite sheet is a profile of tooth, two profiles of tooth, three profiles of tooth, four profiles of tooth, five profiles of tooth or six profiles of tooth.
2, pointed tooth compact bit according to claim 1 is characterized in that the profile of tooth composite sheet on the described bit matrix (2) is a profile of tooth composite sheet, two profile of tooth composite sheet, three profile of tooth composite sheet, four profile of tooth composite sheet, five profile of tooth composite sheet or the six profile of tooth composite sheet of single structure form.
3, pointed tooth compact bit according to claim 1, it is characterized in that on the described bit matrix (2) being that a profile of tooth composite sheet and two profile of tooth composite sheet are staggered, three profile of tooth composite sheet and four profile of tooth composite sheet are staggered, and five profile of tooth composite sheet and six profile of tooth composite sheet are staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201780468U CN201148840Y (en) | 2007-10-16 | 2007-10-16 | Sharp tooth compact bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201780468U CN201148840Y (en) | 2007-10-16 | 2007-10-16 | Sharp tooth compact bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201148840Y true CN201148840Y (en) | 2008-11-12 |
Family
ID=40116606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201780468U Expired - Fee Related CN201148840Y (en) | 2007-10-16 | 2007-10-16 | Sharp tooth compact bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201148840Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577146A (en) * | 2020-05-14 | 2020-08-25 | 北京探矿工程研究所 | Novel high-efficient shock-resistant diamond compact piece coring bit |
-
2007
- 2007-10-16 CN CNU2007201780468U patent/CN201148840Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577146A (en) * | 2020-05-14 | 2020-08-25 | 北京探矿工程研究所 | Novel high-efficient shock-resistant diamond compact piece coring bit |
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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: 20081112 Termination date: 20101016 |