CN208518606U - A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure - Google Patents
A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure Download PDFInfo
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- CN208518606U CN208518606U CN201821272395.0U CN201821272395U CN208518606U CN 208518606 U CN208518606 U CN 208518606U CN 201821272395 U CN201821272395 U CN 201821272395U CN 208518606 U CN208518606 U CN 208518606U
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Abstract
The utility model discloses a kind of rotor block formula borehole-enlarging drilling tools of novel head-on structure, it is made of drill bit and footstalk, connector is equipped on footstalk, drill bit includes top surface, bottom surface, diametral plane, vertical periphery, inclination periphery, top surface is parallel to each other with bottom surface, vertical periphery, diametral plane are perpendicular to top surface, bottom surface, periphery is tilted to be in tilted layout between vertical periphery and top surface, added between diametral plane and vertical periphery with diametral plane in obtuse angle it is vertical head-on, diametral plane and inclination periphery between add be located at it is vertical head-on above inclination head on.The utility model adds vertical head between diametral plane and vertical periphery, drill bit stress since heading on the thinnest part of bottom surface inclination, so that resistance is reduced, the deslagging for being conducive to the gravel particle formed after Drilling broken rock is unobstructed, to improve the cutting effect and driving speed of drilling machine, after drill bit resistance reduces simultaneously, the steel body of bit part is not easy to be abraded.
Description
Technical field
The utility model relates to geological and mineral exploration equipment technical fields, specifically, refer to a kind of novel head-on structure
Rotor block formula borehole-enlarging drilling tool.
Background technique
Casing drilling tool is applied to geological and mineral exploration field, and in the stratum drilling construction of numerous complicated, collapse hole, burying are
It is that construction personnel frequently encounters and very headache the problem of, using conventional drilling process method it is difficult to ensure that the matter of drilling
Amount and construction efficiency.Down-the-hole air hammer pipe-following drilling technology takes full advantage of the excellent of down-the-hole air hammer high-efficient impacting fractured rock
Gesture, while efficient detritus drilling, the hole wall with entering casing protection drilling can be pressed down using the rigid guiding role of casing
Hole deviation processed, guarantee drilling straightness, therefore with pipe borehole-enlarging drilling tool be at home and abroad also widely used for it is hard, broken,
In the loose engineering the drilling construction for waiting bad grounds.Down-the-hole air hammer pipe-following drilling technology is driven by drilling rod and down-the-hole air hammer
Dynamic impact drilling tool and revolution drive the eccentric reaming head rotation on drilling tool, and counter-bore head is unfolded under eccentric force effect, therefore is claimed
Be " rotor block formula borehole-enlarging drilling tool ", later drill bit expansion diameter be greater than with pipe and shoe outer diameter, to reach reaming
Purpose.
Drilling tool in the prior art is at the construction field (site) in practical work process, since the diametral plane of drill bit intersects with periphery
For an acute angle face, when drill bit drills to rock stratum, resistance is larger, and the gravel particle formed after Drilling broken rock is be easy to cause to arrange
The unsmooth problem of slag, and then the cutting effect and driving speed of drilling machine are influenced, while as shown in Figure 1 and Figure 2, left side of dotted line
The steel body of bit part is easy accelerated abrasion, causes steel body to embrace incessantly half knuckle-tooth and the problem of falling off too early occur, this brill
It is shorter to have a service life, cannot be further continued for once be worn using finally scrapping.
Therefore a kind of rotor block formula borehole-enlarging drilling tool that can reduce resistance when drill bit drills to rock stratum is provided, be this
Those skilled in the art's technical problem to be solved.
Utility model content
It is existing to solve the purpose of this utility model is to provide a kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure
Resistance is larger when drill bit in technology drills to rock stratum, be easy to cause the gravel particle deslagging formed after Drilling broken rock unsmooth
The problem of, and then the cutting effect and driving speed of drilling machine are influenced, while as shown in Figure 1 and Figure 2, the bit head of left side of dotted line
The steel body divided is easy accelerated abrasion, causes steel body to embrace and does not live half knuckle-tooth and the problem of falling off too early occur, the utility model is logical
Cross following technical proposals realization:
A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure, is made of drill bit and footstalk, is equipped with and is used on footstalk
The connector of down-the-hole air hammer is connected, the drill bit includes top surface, bottom surface, diametral plane, vertical periphery, inclination periphery, top
Face is parallel to each other with bottom surface, and vertical periphery, diametral plane tilt periphery and are in tilted layout vertical outer perpendicular to top surface, bottom surface
Between disc and top surface, added between diametral plane and vertical periphery with diametral plane in obtuse angle it is vertical head-on, diametral plane with incline
It adds the inclination being located above vertical head between oblique periphery to head on, and interference is connected with conical tooth on top surface, is inclining
Interference is connected with half knuckle-tooth on oblique periphery, and interference is connected with flat-top tooth on vertical periphery.
It is an acute angle face that the utility model, which intersects the diametral plane of drill bit in the prior art with periphery, is improved in diameter
Added between face and vertical periphery it is vertical head-on, and vertically head-on with diametral plane in obtuse angle, when drill bit is in drilling process,
Diametral plane forced area reduces, vertical head-on to move toward one another coordination with gravel particle, drill bit can be made by gravel particle
Reaction force reduces, to reduce resistance when drill bit drills to rock stratum.Between the diametral plane and inclination periphery
Inclination is also had additional to head on, it is therefore an objective to the resistance for further decreasing gravel particle, since inclination is head-on upper positioned at what is vertically headed on
Side, therefore the forced area head-on further reduced vertically head-on is tilted, and tilt head-on so that diametral plane is outer to tilting
Disc is the shape that the gradient is incremented by, when drill bit is in drilling process, always head-on start with the thinnest part of bottom surface via inclination by
Power, so as to achieve the purpose that further decrease gravel particle resistance.
Interference is connected with conical tooth on the top surface, in order to which drill bit carries out Drilling to bottom hole；Tilt interference on periphery
It is connected with half knuckle-tooth, in order to which rock etc. of the drill bit to conical tooth institute Drilling is further crushed；Interference connection on vertical periphery
There is flat-top tooth, to prevent the acceleration of steel body from denuding.The utility model is headed on and bottom when drill bit drills to rock stratum by inclination
The thinnest part in face starts stress, so that resistance is reduced, the deslagging for being conducive to the gravel particle formed after Drilling broken rock is unobstructed,
To improve the cutting effect and driving speed of drilling machine, while after the reduction of drill bit resistance, the steel body of bit part is not easy to be ground
Erosion solves the problems, such as that steel body embraces incessantly half knuckle-tooth and occurs falling off too early.
Further, the vertical head-on angle α between diametral plane is 120 °, is headed between diametral plane when vertical
Angle α when being 120 °, it is vertical head-on to move toward one another that be that frictional force is the smallest move toward one another with gravel particle, be conducive to reduce
Resistance suffered by drill bit.
Further, head-on angle β between bottom surface is 55 ° for the inclination, when the inclination head-on folder between bottom surface
When angle beta is 55 °, the structural strength that inclination is head-on located not only can guarantee, but also can guarantee that the tilt angle of inclination head-on to bore
It is stress being headed on by inclination with the thinnest part of bottom surface when head Drilling.
Further, it is the annular groove greater than 1/4 circular arc that the intersection of the drill bit and footstalk, which is equipped with cross sectional shape, existing
Have in technology, the arc structure for being usually 1/4 in the intersection of drill bit and footstalk setting cross sectional shape, this structure can be alleviated
The stress concentration phenomenon of a part, but cross sectional shape increases the distribution of steel body internal stress for the annular groove greater than 1/4 circular arc
Range stress can be widely distributed in steel body, when drill bit absorbs impact load so that drill bit be made to be not susceptible to
The failure mode of improper fracture ensure that the permanent of drilling life of bit.
Further, the flat-top tooth, conical tooth, half knuckle-tooth are made using cemented carbide material, the drill bit with
Footstalk is made using FF710 steel.Hard alloy is with hardness is high, wear-resisting, intensity is high and toughness is preferable, heat-resisting, corrosion-resistant
Etc. a series of excellent performances, and FF710 steel fracture toughness with higher and lower fatigue crack growth rate, it is suitable for system
Make high-intensitive connector and axial workpiece.
The utility model compared with prior art, have the following advantages that and the utility model has the advantages that
(1) it is an acute angle face that the utility model, which intersects the diametral plane of drill bit in the prior art with periphery, is improved to
Added between diametral plane and vertical periphery it is vertical head-on, and vertically head-on with diametral plane in obtuse angle, can make drill bit by
The reaction force of gravel particle reduces, to reduce resistance when drill bit drills to rock stratum, drill bit from inclination head-on with
The thinnest part of bottom surface starts stress, so that resistance is reduced, the deslagging for being conducive to the gravel particle formed after Drilling broken rock is logical
Freely, to improve the cutting effect and driving speed of drilling machine, at the same drill bit resistance reduce after, the steel body of bit part be not easy by
Abrasion solves the problems, such as that steel body embraces incessantly half knuckle-tooth and occurs falling off too early；
(2) the utility model vertical be when head-on the angle α between diametral plane is 120 °, it is vertical head-on and gravel particle
Move toward one another that be that frictional force is the smallest move toward one another, be conducive to reduce resistance suffered by drill bit；
(3) when the angle β that the inclination of the utility model heads between bottom surface is 55 °, it both can guarantee and tilt the place that heads on
Structural strength, while can guarantee that the tilt angle of inclination head-on makes again is head-on most thin with bottom surface by inclination when bit drilled
Place starts stress；
(4) it is the annular groove greater than 1/4 circular arc that the intersection of the utility model drill bit and footstalk, which is equipped with cross sectional shape, is increased
Stress can be widely distributed in steel body by the range of big steel body internal stress distribution when drill bit absorbs impact load,
To make drill bit be not susceptible to the failure mode of improper fracture, the permanent of drilling life of bit ensure that.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become apparent:
Fig. 1 is the top view of prior art drill bit；
Fig. 2 is the main view of prior art drill bit；
Fig. 3 is the perspective view of the utility model；
Fig. 4 is the top view of the utility model；
Fig. 5 is the main view of the utility model；
Fig. 6 is the left view of the utility model；
Fig. 7 is the circular groove structure schematic diagram of the utility model；
Wherein: 1-drill bit, 2-footstalks, 3-flat-top teeth, 4-conical tooths, 5-half knuckle-tooth, 6-vertically head on, and 7-incline
Tiltedly head-on, 8-vertical peripheries, 9-diametral planes, 10-annular grooves.
Specific embodiment
The utility model is described in further detail below with reference to embodiment, but the embodiments of the present invention is not
It is limited to this.
Embodiment:
A kind of novel head-on rotor block formula borehole-enlarging drilling tool of structure is made of drill bit 1 and footstalk 2 as shown in Figures 1 to 7,
Connector is equipped on footstalk 2, drill bit 1 is mounted on down-the-hole air hammer by the connector on footstalk 2, and the drill bit 1 includes
Top surface, bottom surface, diametral plane 9, vertical periphery 8, inclination periphery, footstalk 2 are fixedly connected on the bottom surface of drill bit 1, and
It is the annular groove 10 greater than 1/4 circular arc, top surface and the bottom surface phase of drill bit 1 that the intersection of drill bit 1 and footstalk 2, which is equipped with cross sectional shape,
Mutually in parallel, perpendicular to top surface, bottom surface, the inclination periphery of drill bit 1, which is in tilted layout, to exist for the vertical periphery 8 of drill bit 1, diametral plane 9
Between vertical periphery 8 and top surface.Added between the diametral plane 9 and vertical periphery 8 it is vertical head-on 6, and vertically head on 6
Angle α between diametral plane 9 is 120 °.The diametral plane 9 and inclination periphery between add inclination head-on 7, inclination head-on 7
Positioned at it is vertical head-on 6 top, and tilting the head-on angle β between 7 and bottom surface is 55 °.
The utility model when drill bit 1 drills to rock stratum, by inclination head-on 7 with the thinnest part of bottom surface stress,
So that resistance is reduced, the deslagging for being conducive to the gravel particle formed after Drilling broken rock is unobstructed, to improve cutting for drilling machine
Effect and driving speed are cut, while after the reduction of 1 resistance of drill bit, the steel body of 1 part of drill bit is not easy to be abraded, and efficiently solves steel body
It embraces incessantly half knuckle-tooth 5 and the problem of falling off too early occurs.
As shown in Figures 1 to 7, interference is connected with conical tooth 4, the inclination outer circle of the drill bit 1 on the top surface of the drill bit 1
Interference is connected with half knuckle-tooth 5 on face, and interference is connected with flat-top tooth 3, and the flat-top on the vertical periphery 8 of the drill bit 1
Tooth 3, conical tooth 4, half knuckle-tooth 5 are made using cemented carbide material, the drill bit 1 and footstalk 2 made of FF710 steel and
At.
Interference is connected with conical tooth 4 on the top surface, in order to which drill bit 1 carries out Drilling to bottom hole；Tilt mistake on periphery
It is full of and is connected with half knuckle-tooth 5, in order to which rock etc. of the drill bit 1 to conical tooth institute Drilling is further crushed；Interference on vertical periphery 8
It is connected with flat-top tooth 3, to prevent the acceleration of steel body from denuding.Hard alloy is high, wear-resisting with hardness, intensity is high and toughness is preferable,
A series of excellent performances such as heat-resisting, corrosion-resistant, and FF710 steel fracture toughness with higher and lower crack Propagation speed
Rate is suitable for manufacturing high-intensitive connector and axial workpiece.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that
Are as follows: these embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective and become
Type, the scope of the utility model are defined by the claims and their equivalents.
Claims (5)
1. a kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure, is made of drill bit (1) and footstalk (2), sets on footstalk (2)
There is the connector for connecting down-the-hole air hammer, it is characterised in that: the drill bit (1) includes top surface, bottom surface, diametral plane (9), hangs down
Straight periphery (8), inclination periphery, top surface are parallel to each other with bottom surface, vertical periphery (8), diametral plane (9) perpendicular to top surface,
Bottom surface, inclination periphery is in tilted layout between vertical periphery (8) and top surface, between diametral plane (9) and vertical periphery (8)
Add with diametral plane (9) in obtuse angle it is vertical head-on (6), diametral plane (9) with inclination periphery between add be located at it is vertical head on
(6) inclination above heads on (7), and interference is connected with conical tooth (4) on top surface, and interference is connected on inclination periphery
Half knuckle-tooth (5), interference is connected with flat-top tooth (3) on vertical periphery (8).
2. the rotor block formula borehole-enlarging drilling tool of the novel head-on structure of one kind according to claim 1, it is characterised in that: described to hang down
The straight head-on angle α between (6) and diametral plane (9) is 120 °.
3. the rotor block formula borehole-enlarging drilling tool of the novel head-on structure of one kind according to claim 1, it is characterised in that: described to incline
Tiltedly head-on the angle β between (7) and bottom surface is 55 °.
4. the rotor block formula borehole-enlarging drilling tool of the novel head-on structure of one kind according to claim 1, it is characterised in that: the brill
It is the annular groove (10) greater than 1/4 circular arc that head (1) and the intersection of footstalk (2), which are equipped with cross sectional shape,.
5. the rotor block formula borehole-enlarging drilling tool of the novel head-on structure of one kind according to any one of claims 1 to 4, feature exist
In: the flat-top tooth (3), conical tooth (4), half knuckle-tooth (5) are made using cemented carbide material, the drill bit (1) and axis
Handle (2) is made using FF710 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272395.0U CN208518606U (en) | 2018-08-08 | 2018-08-08 | A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272395.0U CN208518606U (en) | 2018-08-08 | 2018-08-08 | A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518606U true CN208518606U (en) | 2019-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821272395.0U Active CN208518606U (en) | 2018-08-08 | 2018-08-08 | A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153164A (en) * | 2021-04-20 | 2021-07-23 | 金沙县仁德钻探工具有限公司 | Four-wing flat-top eight-tooth drill bit |
-
2018
- 2018-08-08 CN CN201821272395.0U patent/CN208518606U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153164A (en) * | 2021-04-20 | 2021-07-23 | 金沙县仁德钻探工具有限公司 | Four-wing flat-top eight-tooth drill bit |
| CN113153164B (en) * | 2021-04-20 | 2024-02-23 | 金沙县仁德钻探工具有限公司 | Four-wing flat-top eight-tooth drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 369, Xingchuan Road, Jinniu District, Chengdu, Sichuan 610000 Patentee after: Sichuan Chengdu Exploration Machinery Co.,Ltd. Address before: No. 369, Xingchuan Road, Jinniu District, Chengdu, Sichuan 610083 Patentee before: CHENGDU PROSPECTING MACHINERY FACTORY |
|
| CP03 | Change of name, title or address |