CN203334966U - Layered die block of diamond bit and bit body of diamond bit - Google Patents
Layered die block of diamond bit and bit body of diamond bit Download PDFInfo
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- CN203334966U CN203334966U CN2013202778704U CN201320277870U CN203334966U CN 203334966 U CN203334966 U CN 203334966U CN 2013202778704 U CN2013202778704 U CN 2013202778704U CN 201320277870 U CN201320277870 U CN 201320277870U CN 203334966 U CN203334966 U CN 203334966U
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- mole
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Abstract
Provided is a layered die block of a diamond bit. The layered die block of the diamond bit comprises an inner diamond layer (10), a middle diamond layer (20), an outer diamond layer (30), a first composite layer (40) and a second composite layer (50) in sequence in the radial direction of the diamond bit from the central axis of the diamond bit, wherein the first composite layer is arranged between the inner diamond layer and the middle diamond layer in a pressing connection mode, and the second composite layer is arranged between the middle diamond layer and the outer diamond layer in a pressing connection mode. According to the die block of the diamond bit, due to the facts that the layered die block is formed by the inner diamond layer, the middle diamond layer, the outer diamond layer, the first composite layer and the second composite layer in a pressing connection mode, and diamonds are arranged in the inner diamond layer, the middle diamond layer and the outer diamond layer in a dispersed mode, the contact area between a lip face of a die body of the diamond bit and the surface of rock is reduced in the process of drilling, and the drilling speed is increased.
Description
Technical field
The utility model relates to a kind of mole for drill bit, particularly a kind of stratified operation layer mole that is applicable to the diamond bit of geological core drilling and sampling.The utility model also provides a kind of drill bit that uses the layering mole of this diamond bit.
Background technology
Diamond bit is a kind of cutting element, in mainly being applicable to, firmly to solid rock, also can be used for creeping into concrete, pottery, refractory material, cement products and other hard crisp nonmetals etc.Due to its particularity of cutting object, this just requires diamond used to have enough intensity and hardness, with application life and the drilling efficiency of guarantee fund's diamond bit.Manufacturing at present the method that common diamond bit adopts is generally the powder metallurgy pressure sintering, after being about to diamond and alloy powder mixing, with bit matrix, is fitted together, then makes diamond bit by heating pressure method.This manufacture method diamond the is stood high temperature of 1000 ℃ of left and right, be subjected to fire damage, and diamond quality descends, and affected the result of use of drill bit.In addition, the diamond-impregnated bit used at present extensively is that carcass all plates diamond inside by diamond made drill bit together with the alloy powder mix, when drill bit is worked, diamond along with the continuous exposure of the wearing and tearing of carcass, work, come off, exposure again.This drill bit due to the carcass labial surface and the rock surface contact area large, labial surface puts on not enough so that its fragmentation of the pressure of rock, rate of penetration is slow, drilling efficiency is low.
The utility model content
The purpose of this utility model is to provide a kind of layering mole of diamond bit, footpath at diamond bit makes progress, central axis by diamond bit starts, and the layering mole comprises a diamond internal layer, a diamond intermediate layer, a diamond skin, first composite bed and second composite bed successively.The first laminated being connected between diamond internal layer and diamond intermediate layer wherein.The second laminated being connected between diamond intermediate layer and diamond skin.The layering mole of diamond bit, form the layering mole by diamond internal layer, diamond intermediate layer, diamond skin, the first composite bed and the second composite bed crimping.
Another purpose of the present utility model is to provide a kind of drill bit that uses above-mentioned layering mole, creeping into middle diamond drill bit matrix labial surface and the minimizing of rock surface contact area, has improved rate of penetration.
In the another kind of exemplary embodiment of the layering mole of diamond bit, the first composite bed and the second composite bed are the alloy powder.
In another exemplary embodiment of layering mole of diamond bit, in the diamond internal layer, the granularity of diamond particles is 45/80, and volumn concentration is 20%-25%.In the diamond intermediate layer, the granularity of diamond particles is 35/50, and volumn concentration is 16%-22%.In the diamond skin, the granularity of diamond particles is 45/60, and volumn concentration is 20%-25%.
In another exemplary embodiment of layering mole of diamond bit, the layering mole is pressed together diamond internal layer, the first composite bed, diamond intermediate layer, the second composite bed and diamond skin by the mode of cold stamping die moulding.
The utility model also provides a kind of drill bit, comprises layering mole and a bit matrix of a plurality of above-mentioned diamond bits.The layering mole is circumferential uniform on it along bit matrix.
The accompanying drawing explanation
Fig. 1 is for illustrating the structural representation of a kind of exemplary embodiment of layering mole of diamond bit.
Fig. 2 to Fig. 4 is for illustrating the layering mole variation of working lip in the course of the work of diamond bit.
Fig. 5 is for illustrating the forming principle of layering mole of diamond bit.
Label declaration
10 diamond internal layers
20 diamond intermediate layers
30 diamond skins
40 first composite beds
50 second composite beds
60 bit matrix
70 layering moles
72 central axiss
82 external molds
84 push-down heads
86 seaming chucks.
The specific embodiment
Understand for the technical characterictic to utility model, purpose and effect have more clearly, now contrast accompanying drawing the specific embodiment of the present utility model is described, in each figure, identical label means identical or structural similarity but the identical part of function.For making drawing succinct, only schematically shown the part relevant to the utility model in each figure, they do not represent its practical structures as product.In addition, so that drawing succinctly is convenient to understand, the parts that have same structure or function in some figure, only schematically illustrated one of them, or only marked one of them.
In this article, " one " not only means " only this ", also can mean the situation of " more than ".
The diamond used in the utility model comprises natural diamond and diamond.
Fig. 1 is for illustrating the structural representation of a kind of exemplary embodiment of layering mole of diamond bit, and in figure, dotted line has schematically shown the bit matrix of diamond bit.As shown in the figure, along week of bit matrix upwards, compartment of terrain uniform the layering mole of a plurality of diamond bits.
Wherein, the layering mole of each diamond bit comprises a diamond internal layer 10, diamond intermediate layer 20, diamond skin 30, the first composite bed 40 and second composite bed 50.Along diamond bit in Fig. 1 radially, diamond internal layer 10, the first composite bed 40, diamond intermediate layer 20, the second composite bed 50 and diamond skin 30 are arranged in order, and diamond internal layer 10 is in a side of the central axis 72 of close diamond bit.Diamond internal layer 10,, the first composite bed 40, diamond intermediate layer 20, the second composite bed 50 be with together with diamond skin 30 is crimped on successively.
The layering mole of diamond bit, form the layering mole by diamond internal layer, diamond intermediate layer, diamond skin, the first composite bed and the second composite bed crimping, and in diamond internal layer, diamond intermediate layer and diamond skin, disperse has diamond.
In a kind of exemplary embodiment of layering mole of diamond bit, the first composite bed 40 and the second composite bed 50 are the alloy powder.The mixture that diamond internal layer 10 is alloy powder and diamond particles, wherein the granularity of diamond particles is 45/80, volumn concentration is 20%-25%.The mixture that diamond intermediate layer 20 is alloy powder and diamond particles, wherein the granularity of diamond particles is 35/50, volumn concentration is 16%-22%.The mixture that diamond outer 30 is alloy powder and diamond particles, wherein the granularity of diamond particles is 45/60, volumn concentration is 20%-25%.
Fig. 2 to Fig. 4, for the layering mole variation of working lip in the course of the work of diamond bit is described, has only schematically shown the layering mole of a diamond bit in each figure.State before Fig. 2 is used for the layering mole that diamond bit is described, as shown in the figure, central axis along diamond bit, diamond internal layer 10, the first composite bed 40, diamond intermediate layer 20, the second composite bed 50 are mutually concordant with diamond skin 30, and the cutting labial surface that makes diamond bit is plane.
State when Fig. 3 starts to creep into work for the layering mole that diamond bit is described, as shown in the figure, along the central axis of diamond bit, wearing and tearing have in various degree appearred in diamond internal layer 10, the first composite bed 40, diamond intermediate layer 20, the second composite bed 50 and diamond skin 30.Due to the first composite bed 40 and the second composite bed 50 containing diamond particles, their degree of wear is more serious than diamond internal layer 10, diamond intermediate layer 20 and diamond outer 30, thereby form two grooves, and diamond internal layer 10, diamond intermediate layer 20 and diamond outer 30 forms three cutting edges.So just increased the scope of freedom of layering mole lip, reduced the contact area of layering mole lip and Rock penetrating work plane, increased diamond bit and be applied to the pressure on rock, more effectively fractured rock.
Fig. 4 creeps into the state after work a period of time for the layering mole that diamond bit is described, as shown in the figure, diamond internal layer 10, the first composite bed 40, diamond intermediate layer 20, the second composite bed 50 and diamond outer 30 continues wearing and tearing.The first composite bed 40 and the second composite bed 50 continue in diamond internal layer 10 and diamond intermediate layer 20, and form groove between diamond intermediate layer 20 and diamond skin 30.Due to diamond intermediate layer 20, diamond content than diamond internal layer 10 and diamond skin 30 is low, make the wearing and tearing in diamond intermediate layer 20 more serious, diamond internal layer 10 and diamond skin 30 can play the slotting effect, improve the drilling efficiency of diamond bit, and can play stable drilling tool, prevent the effect of hole deviation.
Fig. 5 is for illustrating the forming principle of layering mole of diamond bit.As shown in the figure, the layering mole of diamond bit is used the cold stamping die moulding, and moulding form comprises external mold 82, push-down head 84 and seaming chuck 86.In the forming process of the layering mole of diamond bit, at first push-down head 84 is placed in external mold 82; Then will fill out on push-down head 84 in order to the mixed-powder paving that forms diamond internal layer 10; Then will fill out on the mixed-powder in order to form diamond internal layer 10 in order to the alloy powder paving that forms the first composite bed 40; Then will fill out on the alloy powder in order to form the first composite bed 40 in order to the mixed-powder paving that forms diamond intermediate layer 20; Then will fill out on the mixed-powder in order to form diamond intermediate layer 20 in order to the alloy powder paving that forms the second composite bed 50; Finally will fill out on the alloy powder in order to form the second composite bed 50 in order to the mixed-powder paving that forms diamond skin 30.The seaming chuck 86 of packing into afterwards, pressurization forms diamond internal layer 10, the first composite bed 40, diamond intermediate layer 20, the second composite bed 50 and diamond skin 30, and they are pressed together.
The utility model also provides the drill bit that uses above-mentioned layering mole, and referring to Fig. 1, drill bit comprises layering mole and a bit matrix of a plurality of diamond bits.The layering mole is circumferential uniform on it along bit matrix.
In this article, " schematically " expression " is served as example, example or explanation ", any diagram, the embodiment that is described in this article " schematically " should be interpreted as a kind of preferred or have more the technical scheme of advantage.
Be to be understood that, although this manual is described according to each embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of manual is only for clarity sake, those skilled in the art should make manual as a whole, technical scheme in each embodiment also can, through appropriate combination, form other embodiments that it will be appreciated by those skilled in the art that.
Above listed a series of detailed description is only illustrating for feasibility embodiment of the present utility model; they are not in order to limit protection domain of the present utility model, all disengaging within equivalent embodiment that the utility model skill spirit does or change all should be included in protection domain of the present utility model.
Claims (7)
1. the layering mole of diamond bit, is characterized in that in the footpath of described diamond bit upwards, by the central axis of described diamond bit, started, and described layering mole comprises successively:
A diamond internal layer (10);
A diamond intermediate layer (20);
A diamond skin (30);
First composite bed (40) be crimped between described diamond internal layer (10) and described diamond intermediate layer (20); With
Second composite bed (50) be crimped between described diamond intermediate layer (20) and described diamond outer (30).
2. the layering mole of diamond bit as claimed in claim 1, wherein said the first composite bed (40) and described the second composite bed (50) are the alloy powder.
3. the layering mole of diamond bit as claimed in claim 1, in wherein said diamond internal layer (10), the granularity of diamond particles is 45/80, volumn concentration is 20%-25%.
4. the layering mole of diamond bit as claimed in claim 1, in wherein said diamond intermediate layer (20), the granularity of diamond particles is 35/50, volumn concentration is 16%-22%.
5. the layering mole of diamond bit as claimed in claim 1, in wherein said diamond outer (30), the granularity of diamond particles is 45/60, volumn concentration is 20%-25%.
6. the layering mole of diamond bit as claimed in claim 1, wherein said layering mole is pressed together described diamond internal layer (10), described the first composite bed (40), described diamond intermediate layer (20), described the second composite bed (50) and described diamond outer (30) by the mode of cold stamping die moulding.
7. drill bit is characterized in that it comprises:
Several layering moles as the described diamond bit of claim 1 to 6 any one, and
A bit matrix (60),
Described layering mole is circumferential uniform on it along described bit matrix (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202778704U CN203334966U (en) | 2013-05-21 | 2013-05-21 | Layered die block of diamond bit and bit body of diamond bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202778704U CN203334966U (en) | 2013-05-21 | 2013-05-21 | Layered die block of diamond bit and bit body of diamond bit |
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| Publication Number | Publication Date |
|---|---|
| CN203334966U true CN203334966U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202778704U Expired - Fee Related CN203334966U (en) | 2013-05-21 | 2013-05-21 | Layered die block of diamond bit and bit body of diamond bit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179457A (en) * | 2013-05-21 | 2014-12-03 | 金川集团股份有限公司 | Layered matrix blocks for diamond drill bit and drill bit using layered matrix blocks |
| CN104806171A (en) * | 2014-09-28 | 2015-07-29 | 湖南飞碟新材料有限责任公司 | Drill bit |
| CN107420048A (en) * | 2017-07-05 | 2017-12-01 | 中南大学 | The equidistant shape positioning distribution superthin layer composite drill bit of diamond and its manufacture craft |
-
2013
- 2013-05-21 CN CN2013202778704U patent/CN203334966U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179457A (en) * | 2013-05-21 | 2014-12-03 | 金川集团股份有限公司 | Layered matrix blocks for diamond drill bit and drill bit using layered matrix blocks |
| CN104806171A (en) * | 2014-09-28 | 2015-07-29 | 湖南飞碟新材料有限责任公司 | Drill bit |
| CN107420048A (en) * | 2017-07-05 | 2017-12-01 | 中南大学 | The equidistant shape positioning distribution superthin layer composite drill bit of diamond and its manufacture craft |
| CN107420048B (en) * | 2017-07-05 | 2018-12-21 | 中南大学 | The equidistant shape positioning distribution superthin layer composite drill bit of diamond and its manufacture craft |
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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: 20131211 Termination date: 20200521 |