CN208718573U - A kind of impact cutting composite drill bit - Google Patents
A kind of impact cutting composite drill bit Download PDFInfo
- Publication number
- CN208718573U CN208718573U CN201821166268.2U CN201821166268U CN208718573U CN 208718573 U CN208718573 U CN 208718573U CN 201821166268 U CN201821166268 U CN 201821166268U CN 208718573 U CN208718573 U CN 208718573U
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- CN
- China
- Prior art keywords
- cutter hub
- drill bit
- knife face
- knife
- composite drill
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- 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.)
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Abstract
The utility model discloses a kind of impacts to cut composite drill bit, cutter hub and knife handle including integrally connected, several knife faces are equipped with towards same circumferencial direction in the circumferential direction of the cutter hub, the front of the knife face is equipped with rotary cutting part, the rotary cutting part is several composite sheets being weldingly fixed on the front of knife face, and the PDC composite sheet is arranged along the outer ledge of knife face；The knife face periphery of the cutter hub and the front end of cutter hub are equipped with down-the-hole impact part, and the down-the-hole impact part is several press-fitted hard alloy columnars fixed on cutter hub.The utility model realizes down-the-hole impact and rotary cutting two kinds of bore modes of drilling by a kind of composite drill bit, in encountering complex formation work progress, does not need frequent more bit change, and rock stratum adaptability is good, and drilling efficiency is high, reduces drilling construction cost.
Description
Technical field
The utility model belongs to rock drill, and in particular to a kind of impact cutting composite drill bit.
Background technique
Traditional rock drilling bore mode includes down-hole percussion drill hole and rotary cutting drilling, and wherein down-hole percussion drill hole is common
In hard rock, rotary cutting drilling is usually used in soft rock.But in the actual construction process, rock stratum will not be unalterable hardness, when
The staggered Complicated Geologic Condition of soft or hard rock is encountered, single equipment is difficult effective drilling depth using single borehole mode, it is often necessary to root
More bit change is carried out according to different rock stratum situations, drilling efficiency is low, or even the suddenly change for rock stratum hardness often occur causes to bore
Just discovery needs to switch drill bit after head serious wear, and which adds additional construction costs.
Utility model content
The technical issues of the utility model solves is: for low efficiency existing for above-mentioned single rock drilling drilling construction, at
This high defect provides a kind of impact cutting composite drill bit, can carry out adaptability Drilling according to bad grounds such as soft, hard rocks and apply
Work.
The utility model adopts the following technical solution realizes:
Composite drill bit is cut in a kind of impact, cutter hub 1 and knife handle 2 including integrally connected, in the circumferential direction of the cutter hub 1 towards
Same circumferencial direction is equipped with several knife faces 11, and the front of the knife face 11 is equipped with rotary cutting part, the knife of the cutter hub (1)
Face periphery and the front end of cutter hub (1) are equipped with down-the-hole impact part.
Further, the leading portion of the cutter hub 1 is cone.
Further, chip space 13, the front end of the cutter hub 1 and outer conical surface are set between the knife face of the cutter hub 1
Upper setting is several to blow cinder hole 12.
Further, the rotary cutting part is the PDC composite sheet 4 on several fronts for being weldingly fixed on knife face 11,
The PDC composite sheet 4 is arranged along the outer ledge of knife face 11.
Further, the down-the-hole impact part is several press-fitted hard alloy columnars 3 fixed on cutter hub 1.
Further, the hard alloy columnar 3 positioned at 11 periphery of knife face is higher by the PDC composite sheet 4 on knife face 11.
In a kind of impact cutting composite drill bit of the utility model, the cutter hub 1 and knife handle 2 are an integral molding structure,
Or by welding or it is threadedly coupled fixation.
Impact in the utility model cuts composite drill bit by adopting the above technical scheme, compared with prior art, this drill bit
Mountable, when encountering soft rock, impactor impact force is small or does not impact on down-the-hole air hammer, and axis pressure is by composite drill bit cutter hub
On hard alloy columnar be pressed into rock stratum, rotary drilling-head carries out cutting rock drilling by the PDC composite sheet on cutter hub；When encountering hard rock
When, the hard alloy columnar contact scar on composite drill bit cutter hub carries out impact drilling, since hard alloy columnar is higher than PDC composite sheet
Setting, is effectively protected composite sheet and is not hit.
From the above mentioned, the utility model realizes down-the-hole impact by a kind of composite drill bit and rotary cutting drills two kinds and bores
Hole mode does not need frequent more bit change in encountering complex formation work progress, and rock stratum adaptability is good, and drilling efficiency is high, drop
Low drilling construction cost.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the main view of the impact cutting composite drill bit in embodiment.
Fig. 2 is the right view of the impact cutting composite drill bit in embodiment.
Figure label: 1- cutter hub, 11- knife face, 12- blow cinder hole, 13- chip space, 2- knife handle, 3- hard alloy columnar, 4-PDC
Composite sheet.
Specific embodiment
Embodiment
Referring to Fig. 1 and Fig. 2, one of diagram impact cutting composite drill bit is the preferred embodiment of the utility model, specifically
Including 2 two parts of cutter hub 1 and knife handle, cutter hub 1 is fixedly connected integrally with knife handle 2, can by welding or be threadedly coupled fixation, or
Cutter hub 1 and knife handle 2 can also be directly integrally machined molding by person.Knife handle 2 is consistent with the Knife handle structure of standard down-the-hold drill bit, sets thereon
It sets connection structure and impactor installation connects.Cutter hub 1 is main drill component, under the power drive of impactor, to rock stratum
Carry out rotary cutting or down-the-hole impact.
The tail portion of cutter hub 1 is fixedly connected with knife handle 2, and leading portion is arranged to cone, on the leading portion cone of cutter hub 1 simultaneously
The PDC composite sheet 4 for rotary cutting and the hard alloy columnar 3 for down-the-hole impact is distributed with.
It is drilled according to circumgyration incision different with the working principle in down-hole percussion drill hole, the present embodiment is arranged on cutter hub leading portion
Three groups of knife faces 11, knife face 11 be circumferentially evenly arranged on the conical surface of cutter hub circular cone, and knife face just facings identical circle
Circumferential direction setting, in this way in 1 rotary course of cutter hub, the rock stratum that just facings of all knife faces 11 carries out rotary cutting.As rotation
The several groups PDC composite sheet 4 for turning cutting part is distributed in the front outer ledge of knife face 11, the extended knife in part in the outer part
The setting of face edge.PDC composite sheet 4 is fixed by welding on knife face 11.
Several groups hard alloy columnar 3 as down-the-hole impact part is then along the periphery of knife face 11 and the front end face of cutter hub 1
Arrangement, hard alloy columnar 3 is by press-fitted fixed in the installation hole location processed on cutter hub 1.Hard positioned at 11 periphery of knife face closes
Principal column 3 is higher by the PDC composite sheet 4 on knife face 11, according to the size of crushed particles, determines that hard alloy columnar 3 is higher by PDC composite sheet
4 height, in this way when the composite drill bit carries out drilling construction, hard alloy columnar 3 is contacted with rock stratum first, while being rushed in down-the-hole
Guarantee that PDC composite sheet 4 is not hit during hitting.
The quantity setting of knife face 11 can be adjusted design according to the cutter hub diameter of drill bit, be not limited only to this implementation
Three groups in example.Knife face 11 protrudes 1 circular conical surface of cutter hub, and the slot structure between knife face 11 forms chip space 13, for drilling brokenly
Broken rubble discharge, the present embodiment the inside of cutter hub 1 and knife handle 2 is arranged to it is hollow, and in the front end face and correspondence of cutter hub 1
Processed in the cutter hub outer conical surface of chip space 13 it is several blow cinder hole 12, by be passed through compressed air from blow cinder hole 12 blow out, can add
The broken rubble discharge of speed drilling.
The above is only the preferred embodiments of the utility model, do not limit the utility model in any way, for
For those skilled in the art, the utility model can have various modification and variations.All spirit and original in the utility model
Within then, made any change, equivalent replacement, modification, improvement etc., should be included in the protection scope of the utility model it
It is interior.Therefore, the protection scope of the utility model should be subject to the scope of protection of the claims.
Claims (7)
1. composite drill bit, cutter hub (1) and knife handle (2) including integrally connected, it is characterised in that: the cutter hub are cut in a kind of impact
(1) several knife faces (11) are equipped with towards same circumferencial direction in circumferential direction, the front of the knife face (11) is equipped with rotary cutting
Component, the knife face periphery of the cutter hub (1) and the front end of cutter hub (1) are equipped with down-the-hole impact part.
2. composite drill bit is cut in a kind of impact according to claim 1, it is characterised in that: the leading portion of the cutter hub (1) is
Cone.
3. composite drill bit is cut in a kind of impact according to claim 2, it is characterised in that: the knife face of the cutter hub (1) it
Between chip space (13) are set, be arranged on the front end of the cutter hub (1) and outer conical surface and several blow cinder hole (12).
4. composite drill bit is cut in a kind of impact according to claim 1, it is characterised in that: if the rotary cutting part is
PDC composite sheet (4) on the dry front for being weldingly fixed on knife face (11), outer side edges of the PDC composite sheet (4) along knife face (11)
Edge arrangement.
5. composite drill bit is cut in a kind of impact according to claim 4, it is characterised in that: if the down-the-hole impact part is
The embedding hard alloy columnar (3) fixed on cutter hub (1) of dry-pressing.
6. composite drill bit is cut in a kind of impact according to claim 5, it is characterised in that: be located at the hard of knife face (11) periphery
Matter alloy column (3) is higher by the PDC composite sheet (4) on knife face (11).
7. composite drill bit is cut in a kind of impact according to claim 1 to 6, it is characterised in that: the cutter hub
(1) it is an integral molding structure with knife handle (2), or by welding or is threadedly coupled fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821166268.2U CN208718573U (en) | 2018-07-23 | 2018-07-23 | A kind of impact cutting composite drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821166268.2U CN208718573U (en) | 2018-07-23 | 2018-07-23 | A kind of impact cutting composite drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208718573U true CN208718573U (en) | 2019-04-09 |
Family
ID=65974484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821166268.2U Active CN208718573U (en) | 2018-07-23 | 2018-07-23 | A kind of impact cutting composite drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208718573U (en) |
-
2018
- 2018-07-23 CN CN201821166268.2U patent/CN208718573U/en active Active
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| GR01 | Patent grant |