CN203441493U

CN203441493U - Composite diamond bit

Info

Publication number: CN203441493U
Application number: CN201320479430.7U
Authority: CN
Inventors: 杨岗
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-07
Filing date: 2013-08-07
Publication date: 2014-02-19
Anticipated expiration: 2023-08-07

Abstract

The utility model discloses a composite diamond bit which comprises a base and a diamond composite layer bit top component on the surface of the base, wherein the bit top component comprises a circular truncated cone bit body and a ball-shaped bit top at the top end of the circular truncated cone bit body. After the adoption of the scheme, the impact resistance and the abrasive resistance of a novel diamond composite body are greatly improved, the excellent characteristics of high strength, high abrasive resistance and high impact toughness are achieved, and the service life of the composite diamond bit is prolonged.

Description

A kind of diamond composite teeth

Technical field

The utility model belongs to development machine, coal-winning machine, shield machine and hammer drill field, relates to a kind of diamond composite teeth.

Background technology

At present, diamond composite teeth is for the manufacture of fields such as coalfield, geology, oil drilling and engineering machinery instruments.Diamond composite teeth consists of pedestal and the diamond layer of carbide alloy, between the pedestal of carbide alloy and diamond layer, by HTHP, is meshed into one.

Traditional diamond composite teeth is as Fig. 1,2,3, and wherein, the circular arc 1 in Fig. 1 and conical 2 is composite bed; Fig. 2 is the conical top 3 that mesh with composite bed on carbide alloy base top, and bottom is cylinder cooperation solder side 4; Such diamond complex can only weld or shrink fit hole in, high temperature when welding or hot pressing, can make diamond composite layer and alloy base engagement tissue be subject to certain impact, different due to composite bed and carbide alloy material after welding or hot pressing, the difference of shrinkage factor, the phenomenon that usually there will be composite bed to burst apart; No matter facts have proved and not occur that the diamond complex of disintegrating tablet is all obviously reductions of hole impact toughness, abrasion resistance, application life.

Utility model content

The purpose of this utility model is to overcome the deficiency that traditional diamond composite teeth exists, and provides that a kind of toughness is strong, the novel diamond composite teeth of abrasion resistance, long service life.

It is as follows that the utility model solves the problems of the technologies described above taked technical scheme:

, comprising base and the lip-deep diamond composite layer crown assembly of being located at described base, described crown assembly comprises frustum of a cone tooth body and is located at the spheroidal crown on described frustum of a cone tooth body top.

Further, preferably, described base comprises the top and circular cone stage body body of spheroidal, and is provided with frustum of a cone pedestal in the bottom of circular cone stage body body, and described spheroidal crown and frustum of a cone tooth status are not located on the top and circular cone stage body body of described spheroidal.

Further, preferably, described base is that Hardmetal materials forms.

Further, preferably, the bottom of described frustum of a cone pedestal is connected with a cylinder table.

Further, preferably, the bottom surface radius of described frustum of a cone tooth body equals the end face radius of described frustum of a cone pedestal.

Further, preferably, the bottom surface radius of described frustum of a cone pedestal equals the radius of described cylinder table.

Further, preferably, the tapering of described frustum of a cone pedestal is: the angle of axis and hypotenuse is between 0-45 °.

Further, preferably, the spherical radius R of described spheroidal crown is that the thickness of 0.5mm～25mm, described conical tooth body is 0.2～3mm.

Further, preferably, the below of described frustum of a cone pedestal is also provided with base.

After the utility model has been taked such scheme, greatly improve impact resistance and the abrasion resistance of Novel diamond complex, and there are high strength, high-wearing feature, these good characteristics of high impact-resistant toughness, extended the application life of diamond composite teeth.

Other features and advantages of the utility model will be set forth in the following description, and, partly from manual, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages can be realized and be obtained by specifically noted structure in the manual write, claims and accompanying drawing.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described in detail, so that above-mentioned advantage of the present utility model is clearer and more definite.

Fig. 1 is the shape and structure schematic diagram of traditional diamond compact;

Fig. 2 is the side structure schematic diagram of traditional diamond layer;

Fig. 3 is the side structure schematic diagram of the pedestal of traditional carbide alloy;

Fig. 4 is the side structure schematic diagram of the crown assembly of the utility model diamond composite teeth;

Fig. 5 is a kind of side structure schematic diagram of the base of the utility model diamond composite teeth;

Fig. 6 is another kind of side structure schematic diagram of the base of the utility model diamond composite teeth;

Fig. 7 is a kind of shape and structure schematic diagram of the utility model diamond composite teeth;

Fig. 8 is another kind of shape and structure schematic diagram of the utility model diamond composite teeth.

The specific embodiment

Below in conjunction with specific embodiment, the utility model is described in detail.

As shown in Figure 4 and 5,6,7,8, a kind of diamond composite teeth, comprises base and the lip-deep diamond composite layer crown assembly of being located at described base, and described crown assembly comprises frustum of a cone tooth body 6 and is located at the spheroidal crown 5 on described frustum of a cone tooth body top.

Wherein, described base comprises spheroidal top 7 and circular cone stage body body 8, and is provided with frustum of a cone pedestal 9 in the bottom of circular cone stage body body, and described spheroidal crown and frustum of a cone tooth status are not located on the top and circular cone stage body body of described spheroidal.

Wherein, in an embodiment, described base is that Hardmetal materials forms, and by HTHP, is meshed and be connected between the base of diamond composite layer and carbide alloy.

Wherein, the difference of Fig. 5 and Fig. 6 is, in the embodiment of Fig. 6, the bottom of described frustum of a cone pedestal is connected with a cylinder table 10.

Wherein, the bottom surface radius of described frustum of a cone tooth body equals the end face radius of described frustum of a cone pedestal.

Wherein, the bottom surface radius of described frustum of a cone pedestal equals the radius of described cylinder table.

Wherein, the tapering of described frustum of a cone pedestal 9 is: the angle of axis and hypotenuse is between 0-45 °.

Wherein, in a preferred embodiment, the below of described frustum of a cone pedestal 9 is also provided with base 10, certainly, also above-mentioned base 10 can be set, and the utility model does not limit this.

In a preferred embodiment, described diamond composite layer crown assembly, can need to produce the diamond composite layer of reasonable size by design parameters, puts into diamond powder and cementing agent on carbide alloy, and HTHP sintering forms.

The diamond composite teeth of the utility model, because crown is spheroidal projection, is difficult for tipping during rock cutting, the pedestal of carbide alloy and diamond layer mesh by the ball conical surface, the pedestal of carbide alloy and the force-bearing situation between diamond layer have been improved, the base bottom of carbide alloy is made as truncated cone, diamond composite teeth after improvement is used the pre-tight fit of bellmouth, the impact of high temperature on crown composite bed and alloy base conjunctive tissue when welding or hot pressing have been avoided in such improvement, impact resistance and the abrasion resistance of Novel diamond complex have so greatly been improved, and there is high strength, high-wearing feature, these good characteristics of high impact-resistant toughness, extended the application life of diamond composite teeth.

Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a diamond composite teeth, comprises base and the lip-deep diamond composite layer crown assembly of being located at described base, it is characterized in that, described crown assembly comprises frustum of a cone tooth body and is located at the spheroidal crown on described frustum of a cone tooth body top.

2. diamond composite teeth according to claim 1, it is characterized in that, described base comprises the top and circular cone stage body body of spheroidal, and be provided with frustum of a cone pedestal in the bottom of circular cone stage body body, and described spheroidal crown and frustum of a cone tooth status are not located on the top and circular cone stage body body of described spheroidal.

3. diamond composite teeth according to claim 1 and 2, is characterized in that, described base is that Hardmetal materials forms.

4. diamond composite teeth according to claim 2, is characterized in that, the bottom of described frustum of a cone pedestal is connected with a cylinder table.

5. according to the diamond composite teeth described in claim 2 or 4, it is characterized in that, the bottom surface radius of described frustum of a cone tooth body equals the end face radius of described frustum of a cone pedestal.

6. diamond composite teeth according to claim 4, is characterized in that, the bottom surface radius of described frustum of a cone pedestal equals the radius of described cylinder table.

7. diamond composite teeth according to claim 3, is characterized in that, the tapering of described frustum of a cone pedestal is: the angle of axis and hypotenuse is between 0-45 °.

8. diamond composite teeth according to claim 1, is characterized in that, the spherical radius R of described spheroidal crown is that the thickness of 0.5mm～25mm, described conical tooth body is 0.2～3mm.

9. diamond composite teeth according to claim 1, is characterized in that, the below of described frustum of a cone pedestal also can be provided with base.