CN208252035U - A kind of diamond compact bit - Google Patents
A kind of diamond compact bit Download PDFInfo
- Publication number
- CN208252035U CN208252035U CN201820764658.3U CN201820764658U CN208252035U CN 208252035 U CN208252035 U CN 208252035U CN 201820764658 U CN201820764658 U CN 201820764658U CN 208252035 U CN208252035 U CN 208252035U
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- CN
- China
- Prior art keywords
- cutting tooth
- layer cutting
- outer layer
- circle
- middle layer
- 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
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Abstract
The utility model innovation discloses a kind of diamond compact bit, including steel body, described steel body one end is provided on the internal screw thread for connecting with drilling equipment and the steel body other end and is provided with cutting tooth, the cutting tooth ecto-entad is divided into outer layer cutting tooth, middle layer cutting tooth and internal layer cutting tooth, the outer layer cutting tooth and middle layer cutting tooth equal at least two and outer layer cutting tooth and middle layer cutting between cog are provided with drainage hole, the internal layer cutting tooth is at least one, and the middle layer cutting tooth is higher than outer layer cutting tooth and internal layer cutting tooth.Drainage hole is set by the way that cutting tooth to be divided into three layers and cut between cog in outer layer cutting tooth and middle layer in the present invention, can effectively improve rate of penetration and drainage effect.
Description
Technical field
The utility model belongs to field of drill more particularly to a kind of diamond compact bit.
Background technique
Drill bit is the critical component of drilling equipment, should have the characteristics that intensity height, long service life.Bit performance it is good
It is bad to be directly related to drilling efficiency and drilling cost.Diamond compact coring for core-drilling common in the art
Drill bit includes steel body and cutting tooth；Steel body is in sleeve shaped；Cutting tooth has multiple, equidistant side for being welded on steel body respectively
On face, the steel body between adjacent cutting tooth is equipped with the drain chamber of semicircular in shape recess.Such drill bit rate of penetration is slowly simultaneously
And it is unfavorable for draining.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of diamond compact bit, can
It is effective to improve rate of penetration and drainage effect.
To realize the purpose, the utility model provides a kind of diamond compact bit, including steel body, the steel body one
End, which is provided on the internal screw thread for connecting with drilling equipment and the steel body other end, is provided with cutting tooth, and the cutting tooth is by outer
It inwardly is divided into outer layer cutting tooth, middle layer cutting tooth and internal layer cutting tooth, the outer layer cutting tooth and middle layer cutting tooth are extremely
Less for two and outer layer cutting tooth and middle layer cut between cog and be provided with drainage hole, the internal layer cutting tooth is at least one,
The middle layer cutting tooth is higher than outer layer cutting tooth and internal layer cutting tooth.
Preferably, the outer layer cutting tooth and middle layer cutting tooth are three, and the internal layer cutting tooth is two.
Preferably, each middle layer cutting tooth is respectively arranged at two outer layer cutting between cog, each outer layer cutting tooth
Vertical center line is evenly distributed on same outer layer circle, and the vertical center line of each outer layer cutting tooth is evenly distributed in together
On the circle of one middle layer, the outer layer is round and middle layer circle be using connect with steel body the end face center point of one end as the concentric circles in the center of circle simultaneously
And outer layer radius of circle is greater than middle layer radius of circle.
Preferably, the internal layer cutting tooth vertical centre is distributed on same internal layer circle, and internal layer circle is with middle layer circle
Concentric circles and internal layer radius of circle are less than middle layer radius of circle.
Preferably, the level height of each middle layer cutting tooth is in rotational direction sequentially reduced.
Preferably, the level height of each outer layer cutting tooth is in rotational direction sequentially reduced.
Preferably, the internal layer cutting tooth height is less than the height of outer layer cutting tooth.
Preferably, the drainage hole is connected to the inner cylinder of steel body.
The utility model compared with prior art, the beneficial effect is that:
In the present invention by the way that cutting tooth is divided into highly different three layers and in outer layer cutting tooth in
Drainage hole is arranged in layer cutting between cog, can effectively improve rate of penetration and drainage effect.Passing through in the present invention will be each
The level height of middle layer cutting tooth and each outer layer cutting tooth is in rotational direction sequentially reduced, can effectively improve rate of penetration from
And improve working efficiency.To drain hole number in outer layer cutting tooth and middle layer cutting between cog setting drainage hole in the utility model
Increasing and being evenly distributed can be effectively solved drainage problem.
Detailed description of the invention
Fig. 1 is the utility model structure schematic top plan view；
Fig. 2 is schematic cross-sectional view in the utility model structure.
Specific embodiment
The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing
It is not limited to as described below.
As Figure 1-Figure 2, a kind of diamond compact bit, the steel body 1 including sleeve shaped, 1 one end of steel body are provided with
Be provided with cutting tooth 2 on internal screw thread 11 and 1 other end of steel body for connecting with drilling equipment, 2 ecto-entad of cutting tooth according to
Secondary to be divided into outer layer cutting tooth 21, middle layer cutting tooth 22 and internal layer cutting tooth 23, outer layer cutting tooth 21 and middle layer cutting tooth 22 are extremely
Drainage hole 3 is provided between two and outer layer cutting tooth 21 and middle layer cutting tooth 22 less, internal layer cutting tooth 23 is at least one
A, middle layer cutting tooth 22 is higher than outer layer cutting tooth 21 and internal layer cutting tooth 23.
Outer layer cutting tooth 21 and middle layer cutting tooth 22 are three, and internal layer cutting tooth 23 is two.To which drainage hole 3 is six
It is a.In addition, outer layer cutting tooth 21 and middle layer cutting tooth 22 can be two, internal layer cutting tooth 23 is one.
The level height of each middle layer cutting tooth 22 is in rotational direction sequentially reduced.The level height edge of each outer layer cutting tooth 21
Rotation direction is sequentially reduced.23 height of internal layer cutting tooth is less than the height of outer layer cutting tooth 21.Drainage hole 3 is interior with steel body 1
Cylinder 12 is connected to.
In the present embodiment, cutting tooth 2 is welded in steel body 1.1 outside of steel body can be protruded on the outside of outer layer cutting tooth 21,
It 21 outside of outer layer cutting tooth can also be with 1 outside of steel body on the same face.Middle layer cutting tooth 22 is successively higher than 21 He of outer layer cutting tooth
Internal layer cutting tooth 23 so that carried out during probing layering substep creep into, so as to effectively improve drilling efficiency and
Effect.
Each middle layer cutting tooth 22 is respectively arranged between two outer layer cutting tooths 21, the vertical center line of each outer layer cutting tooth 21
It being evenly distributed on same outer layer circle, the vertical center line of each outer layer cutting tooth 21 is evenly distributed on same middle layer circle,
Outer layer is round and middle layer circle be using connect with steel body 1 the end face center point of one end as the concentric circles in the center of circle and outer layer radius of circle it is big
In middle layer radius of circle.23 vertical centre of internal layer cutting tooth is distributed on same internal layer circle, and internal layer circle is concentric with middle layer circle
Round and internal layer radius of circle is less than middle layer radius of circle.
In the present embodiment, each 21 medial surface of outer layer cutting tooth and the lateral surface of each middle layer cutting tooth 22 can be same as together
On one circle, the lateral surface of each 22 medial surface of middle layer cutting tooth and internal layer cutting tooth 23 can be on same circle, to improve drilling speed
Degree.In addition, the radius of circle where each 21 medial surface of outer layer cutting tooth might be less that the lateral surface place of each middle layer cutting tooth 22
Round radius.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (8)
1. a kind of diamond compact bit, including steel body (1), described steel body (1) one end is provided with for connecting with drilling equipment
Cutting tooth (2) are provided on the internal screw thread (11) and steel body (1) other end connect, which is characterized in that the cutting tooth (2) is by outer
Inwardly it is divided into outer layer cutting tooth (21), middle layer cutting tooth (22) and internal layer cutting tooth (23), the outer layer cutting tooth (21)
Draining is provided between middle layer cutting tooth (22) equal at least two and outer layer cutting tooth (21) and middle layer cutting tooth (22)
Hole (3), the internal layer cutting tooth (23) are at least one, and the middle layer cutting tooth (22) is higher than outer layer cutting tooth (21) and internal layer
Cutting tooth (23).
2. a kind of diamond compact bit according to claim 1, which is characterized in that the outer layer cutting tooth (21) and
Middle layer cutting tooth (22) is three, and the internal layer cutting tooth (23) is two.
3. a kind of diamond compact bit according to claim 1 or 2, which is characterized in that each middle layer cutting tooth
(22) it is respectively arranged between two outer layer cutting tooths (21), the vertical center line of each outer layer cutting tooth (21) is uniformly distributed
On same outer layer circle, the vertical center line of each outer layer cutting tooth (21) is evenly distributed on same middle layer circle, described
Outer layer is round and middle layer circle is to connect the end face center point of one end with steel body (1) as the concentric circles in the center of circle and outer layer radius of circle
Greater than middle layer radius of circle.
4. a kind of diamond compact bit according to claim 3, which is characterized in that the internal layer cutting tooth (23) is hung down
Straight central distribution is on same internal layer circle, and internal layer is round and middle layer circle is concentric circles and internal layer radius of circle is less than middle layer circle partly
Diameter.
5. a kind of diamond compact bit according to claim 1 or 2, which is characterized in that each middle layer cutting tooth
(22) level height is in rotational direction sequentially reduced.
6. a kind of diamond compact bit according to claim 1 or 2, which is characterized in that each outer layer cutting tooth
(21) level height is in rotational direction sequentially reduced.
7. a kind of diamond compact bit according to claim 1, which is characterized in that the internal layer cutting tooth (23) is high
Degree is less than the height of outer layer cutting tooth (21).
8. a kind of diamond compact bit according to claim 1, which is characterized in that the drainage hole (3) is and steel
The inner cylinder (12) of body (1) is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820764658.3U CN208252035U (en) | 2018-05-22 | 2018-05-22 | A kind of diamond compact bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820764658.3U CN208252035U (en) | 2018-05-22 | 2018-05-22 | A kind of diamond compact bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208252035U true CN208252035U (en) | 2018-12-18 |
Family
ID=66481067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820764658.3U Expired - Fee Related CN208252035U (en) | 2018-05-22 | 2018-05-22 | A kind of diamond compact bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208252035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302541A (en) * | 2020-10-29 | 2021-02-02 | 长江大学 | A matrix PDC coring bit that is arranged in hard and above homogeneity stratum |
-
2018
- 2018-05-22 CN CN201820764658.3U patent/CN208252035U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302541A (en) * | 2020-10-29 | 2021-02-02 | 长江大学 | A matrix PDC coring bit that is arranged in hard and above homogeneity stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181218 Termination date: 20200522 |