CN206190217U - Last diamond bit who has rotary teeth of disc cutter - Google Patents
Last diamond bit who has rotary teeth of disc cutter Download PDFInfo
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- CN206190217U CN206190217U CN201621274284.4U CN201621274284U CN206190217U CN 206190217 U CN206190217 U CN 206190217U CN 201621274284 U CN201621274284 U CN 201621274284U CN 206190217 U CN206190217 U CN 206190217U
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- rotary teeth
- dise knife
- teeth
- rotary
- cutting
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Abstract
The utility model discloses a last diamond bit who has rotary teeth of disc cutter belongs to drilling equipment technical field such as oil and natural gas, mine engineering, building foundation engineering construction, geology, the hydrology, including bit body and disc cutter, disc cutter is connected for rotating with the bit body, and disc cutter can rotate by relative bit body, the last cutting teeth that is provided with of disc cutter, and its characterized in that: be equipped with at least one disc cutter on the bit body, the last cutting teeth of disc cutter has one at least, and form to rotate with disc cutter is connected for the rotary teeth, the rotation axis skew of the geometric centre relative rotation tooth in the preceding cutting face of rotary teeth or the preceding cutting face of rotary teeth, and the geometric centre in the back cutting face of rotary teeth or back cutting face skew side's homonymy in cutting face in the front, preceding cutting face after relatively the cutting face near the rotation axis of rotary teeth to can be rotatory on disc cutter around rotation axis.
Description
Technical field
The invention belongs to drilling equipment skills such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology
Art field, more particularly to a kind of dise knife drill bit.
Background technology
Drill bit be in drilling engineering to fractured rock, form the rock crushing tool of pit shaft.The efficiency of breaking rock of drill bit and use
Life-span directly affects the service index and performance of drill bit.
Southwest Petrol University proposes " a kind of wheel-type drill with cutting form broken rock "（Patent No. ZL
201010229375.7）" a kind of combined drill with cutting form broken rock "（Patent No. ZL 201010229371.9）, this
Runner on two drill bits（That is dise knife, also known as flywheel knife）With larger deviation angle（The scope of deviation angle is 20 °~90 ° or -90 °
~-20 °）, big deviation angle make the cutting tooth on drill bit dise knife with cut or scrape butt formula slowly replace fractured rock.Two kinds of drill bits
On dise knife deviation angle it is larger, coverage of the dise knife in drill bit radially is larger, the cutting tooth on dise knife from incision shaft bottom to
Cut out shaft bottom scrape cut it is more long away from discrete time, dise knife cutting tooth during broken rock, effect of the cutting tooth with respect to rock
Direction is being continually changing.The cutting tooth being fixed on dise knife is scraped to cut through and cut direction change with respect to scraping for rock during rock, unfavorable
In being suitable for scraping the composite polycrystal-diamond of butt formula broken rock（PDC teeth）The extremely strong diamond class cutting tooth of uniform wearability
Use.Reason is composite polycrystal-diamond（PDC teeth）It is made up of matrix and polycrystalline diamond layer two parts, rock is risen
It is main to scrape that cut effect is polycrystalline diamond layer, PDC teeth scrape cut as when there is directionality, can only be polycrystalline diamond layer preceding
Matrix is rear.If Impact direction amplitude of variation is excessive in the course of the work for PDC teeth, or by opposition, it is easy to
Bursting apart for polycrystalline diamond layer is caused, it is serious to reduce the working life of PDC teeth, or even damage PDC teeth within the extremely short time
Failure.
The action direction that the cutting tooth being fixed on dise knife scrapes when cutting through rock with respect to rock changes, and can aggravate the mill of cutting tooth
Damage and damage, influence the service life of drill bit；Meanwhile, cutting tooth is scraped and cuts the direction change of rock and can reduce cutting tooth and scrape and cut through rock
Efficiency, so as to reduce the efficiency of breaking rock of drill bit.
The content of the invention
It is an object of the invention to provide the rotatable drill bit of cutting tooth on a kind of dise knife, with improve drill bit efficiency of breaking rock and
Service life.
The object of the invention is realized by following technical proposals：
Diamond bit with rotary teeth on a kind of dise knife, including bit body and dise knife, dise knife are rotation with bit body
Connection, dise knife can be rotated relative to bit body, and cutting tooth is provided with dise knife, and bit body is provided with least one dise knife, on dise knife
Cutting tooth at least be rotary teeth, rotary teeth forms rotation and is connected with dise knife, the preceding cutting face of rotary teeth or rotary teeth
The geometric center in preceding cutting face rotate against the rotational axis offset of tooth, and rotary teeth rear cutting face or rear cutting face it is several
What center preceding cutting face skew side's homonymy, preceding cutting face relatively after cutting face near rotary teeth rotation axis, and can be around
Rotation axis rotates on dise knife.
The dise knife mentioned in this patent refers to the dise knife with larger deviation angle, the model of the deviation angle of the dise knife on bit body
Enclose is 20 °~90 ° or -90 °~-20 °.
Preceding cutting face described in this patent（It is referred to as rake face）Refer to cutting tooth to downhole formation cutwork when, cut
Under the surface flowed out along it of chip.Then cutting face（It is referred to as rear knife face）Refer to then that cutting tooth is relative with downhole formation
Surface, rear cutting face is usually to face cutting depth（Direction of feed）Face.Typically, preceding cutting face and rear cutting face
Intersection formed cutting edge, it serves as main cutwork.
The composite teeth being composited by matrix and the wearing layer being consolidated on matrix, its preceding cutting face is the front end of wearing layer
Face, then cutting face is then the side of wearing layer and/or matrix.So-called wearing layer is that its wearability is stronger with respect to for matrix,
For composite polycrystal-diamond or polycrystal diamond composite teeth or polycrystalline diamond and answering that impregnated diamond is mutually composited
Close for tooth, its wearing layer is polycrystalline diamond layer, and matrix is then hard alloy or impregnated diamond etc., and matrix is in wear-resisting
The rear portion of layer pushes away holds the front end face that support wearing layer and is preceding carrying out broken rock work.
Therefore, this patent mainly wants to protect the diamond bit with rotary teeth on a kind of dise knife, including bit body and disk
Knife, dise knife is connected with bit body to rotate, and dise knife can be rotated relative to bit body, and cutting tooth is provided with dise knife, be set on bit body
There is at least one dise knife, the cutting tooth on dise knife at least is rotary teeth, rotary teeth is formed to rotate with dise knife and is connected, rotates
Tooth has wearing layer and matrix, and with the geometric center of the front end face of wearing layer as critical point, rotary teeth is overall or several including this
The major part at what center rotates against the rotational axis offset of tooth, and wearing layer front end face with respect to matrix near rotary teeth rotation
Shaft axis, and can be rotated on dise knife around rotation axis.
It should be further understood that the rotary teeth of this patent can also be applied to hard-metal insert, cubic boron or impregnated diamond
Tooth（Block）Deng tooth, now rotary teeth just without wearing layer and matrix point.
Mutually it is combined with impregnated diamond for composite polycrystal-diamond or polycrystal diamond composite teeth or polycrystalline diamond
Composite teeth for, its wearing layer is polycrystalline diamond layer, and matrix is then hard alloy or impregnated diamond etc., now
The front end face of polycrystalline diamond layer is then preceding cutting face, and according to the difference of its front end face shape, preceding cutting face can be plane（Example
Such as most common regular cylindrical body PDC teeth, the front end face of its polycrystalline diamond layer is a circular flat）, curved surface（Such as diamond
Layer forms the front end face of a taper, hemispherical or ridge-shaped/wedge shape etc. on matrix）Or the various surfaces such as shaped face.Likewise,
Cutting face, according to diamond layer or the difference of matrix side view, can be the face of cylinder afterwards（Such as common regular cylindrical body PDC
Tooth, the side of its polycrystalline diamond layer is the face of cylinder）Or other cylinders, or plane etc..
Composite polycrystal-diamond is also known as PDC teeth（Polycrystalline Diamond Compact）Or PDC is compound
Piece, is made up of polycrystalline diamond layer and matrix two parts（Referring to Figure 11）.PDC teeth are using diadust and hard alloy substrate
Sintered under the conditions of high pressure high temperature and formed.Diadust forms the polycrystalline diamond layer of PDC teeth, and hard alloy substrate turns into
The matrix of PDC teeth.PDC teeth had both had high rigidity, the high-wearing feature of diamond, and the intensity with hard alloy is tough with shock resistance
Property, it is the ideal material for manufacturing cutting tool, drilling bit and other wear resistant tools.PDC teeth are suitable for the work in the way of scraping and cut
Make, because the hardness and wearability of the polycrystalline diamond layer of PDC teeth are significantly larger than the matrix of Hardmetal materials, therefore PDC teeth
Scrape cut as when there is the rate of wear of self-sharpening, i.e. polycrystalline diamond layer considerably slower than matrix, make the cutting edge of PDC teeth
（Hard and wear-resisting diamond layer）Remain sharp keen state.
When PDC teeth are scraped cut and made, serve and main scrape that cut is polycrystalline diamond layer.The polycrystalline diamond layer of PDC teeth is hard
And it is crisp, matrix phase to soft but with good toughness, therefore PDC teeth scrape cut as when there is directionality, can only be poly-
Diamond layer after scrape cutting in preceding matrix（Such as Figure 12）, i.e. matrix is in the rear portion of polycrystalline diamond layer and pushes away to hold and support
Polycrystalline diamond layer.If PDC teeth in the course of the work its with respect to rock scrape cut the direction of motion change it is excessive, will substantially reduce
Efficiency of breaking rock is cut in scraping for PDC teeth, also easily causes the damage and failure of PDC teeth.
This patent is compared with the beneficial effect of prior art：
1st, on this patent dise knife rotary teeth contact rock and rock interaction broken rock when, no matter cutting tooth and rock contact
When beginning state how, when cutting tooth is subject to the active force of rock, due to the rotary teeth on dise knife can relative dise knife rotation,
The geometric center in the preceding cutting face of rotary teeth or the preceding cutting face of rotary teeth rotates against the rotational axis offset of tooth, and rotary teeth
Rear cutting face skew side's homonymy or the rear cutting face of rotary teeth geometric center in skew side's homonymy.In rock counter-force
Under effect, rotary teeth can be rotated to the preceding cutting face of tooth preceding, and rock was cut scraping later in the back side in the preceding cutting face of rotary teeth.
And during scraping and cutting through rock, no matter how dise knife rotates, how is the contact relation of dise knife and rock, and the rotary teeth on dise knife is equal
Preceding, the posterior orientation in the back side in preceding cutting face cuts through rock to scrape in cutting face before being.Cutting element on rotary teeth is relative
The rotational axis offset of rotary teeth, in the presence of external force, along the power of the plane perpendicular to rotation axis（Component）Will promote
Rotary teeth rotates about axis rotation, the normal in the preceding cutting face of rotary teeth is always cut broken rock, cutting tooth along butt is scraped
Preceding cutting face normal direction point to all the time scrape butt to.The rotary teeth of this patent biasing has orientation self-regulation adaptation function, makes
All the time cutting face cut through rock to cutting element on rotary teeth in the posterior orientation in the back side in preceding, preceding cutting face to scrape in the past.This will
The efficiency of breaking rock and service life of cutting tooth on enhancing dise knife.
2nd, the rotary teeth on this patent dise knife can be rotated relative to dise knife and the cutting element of rotary teeth is biased, and rotary teeth is all the time
Cut work is scraped with respect to rock with the tangent plane of scraping of stabilization.No matter how drill bit dise knife rotates, the position of dise knife and rotary teeth thereon
How, no matter scraping for cutting tooth cuts how the direction of motion changes on dise knife, the rotary teeth on dise knife all the time can be with its preceding cutting face
Scraped in the posterior orientation in the back side in preceding, preceding cutting face and cut rock, rotary teeth scrapes that to cut operative orientation constant all the time with respect to rock, this
Be conducive to slowing down the abrasion of cutting tooth.Cutting tooth cuts that frictional direction is constant with respect to scraping for rock all the time, cutting on more common dise knife
Cut and scrape butt to the working method being continually changing with respect to rock when tooth works, the abrasion of cutting tooth and abrasion passivation speed are intended to
Slowly.
3rd, the cutting element on the rotary teeth on this patent can use wearability strong and be extremely suitable for scraping butt formula broken rock
PDC teeth, PDC teeth are being scraped with good self-sharpening when cut is made, and the rate of wear of polycrystalline diamond layer is considerably slower than matrix.It is general
In the drill bit broken rock course of work, cutting tooth scrapes butt to being continually changing to cutting tooth on overall knife with respect between rock,
Cutting tooth on dise knife is scraped during butt is scraped to being continually changing and cuts efficiency by reduction.PDC teeth are used on rotary teeth no matter
How dise knife rotates, and the orientation of cutting tooth is how, the PDC teeth on rotary teeth all the time can with polycrystalline diamond layer in preceding matrix rear
Operating configurations scrape and cut rock, PDC teeth scrape butt to remaining constant with respect to rock, and PDC teeth are all the time with normal direction
Scrape and cut through rock, it is conducive to PDC teeth to scrape cutting through giving full play to for rock advantage, the wearability of PDC teeth can be made full use of and from sharp spy
Property.Therefore, while drilling life of bit can be significantly improved using rotary teeth on the dise knife of drill bit, scraping for Cutter is improved
Cut the efficiency of breaking rock of efficiency and drill bit.
Alternatively, the preceding cutting face of rotary teeth is towards its rotation axis.As further selection, the preceding cutting of rotary teeth
The normal of the mistake geometric center in face rotates axis and intersects.
Alternatively, rotary teeth includes rotating the rotary shaft being connected with dise knife, and fixed cutting unit on the rotary shaft
Part, cutting element is selected from composite polycrystal-diamond（PDC teeth）, polycrystal diamond composite teeth（I.e. polycrystalline diamond is adopted with matrix
The complex form beyond foregoing compound sheet form is taken, is referred to as " polycrystal diamond composite teeth "）, TSP be combined
Tooth（Piece）, impregnated diamond tooth（Block）, cubic boron, ceramic tooth or polycrystalline diamond be mutually composited with impregnated diamond
Composite teeth in one or more, and cutting element be composite polycrystal-diamond, polycrystal diamond composite teeth or glomerocryst gold
During the composite teeth that hard rock is mutually composited with impregnated diamond, the front end face of the polycrystalline diamond layer of its cutting tooth is preceding cutting
Face.In the program, because this patent is using the structure of rotary teeth, the cutting element on rotary teeth can be relative with the direction of stabilization
Rock scrapes cut work, therefore wearability preferably above-mentioned cutting element can be used on the rotary teeth of this patent, is cut with improving drill bit
Cut the service life and efficiency of breaking rock of tooth and whole drill bit.
Alternatively, the geometric center in the preceding cutting face of the preceding cutting face of rotary teeth or rotary teeth rotates against the rotation of tooth
The offset distance of axis is more than 1/8th of the rotary shaft radius of rotary teeth, less than the twice of rotary shaft radius.In the program, it is
Smoothly rotated when rotary teeth and rock interaction is worked to correct butt of scraping to and keeping good and scrape butt position, rotation
The offset distance of the rotation axis that the geometric center for turning the preceding cutting face of tooth or the preceding cutting face of rotary teeth rotates against tooth can not be too
Small, offset distance is more big more is easy to the smooth rotation of rotary teeth, order about rotary teeth rotate to the driving force of normal orientation also will be more sufficient,
Also more it is easy to ensure that rotary teeth can keep good during dise knife is rotating and scrape butt.But offset distance can not be too
Greatly, too big offset distance will make rotary teeth occupy larger revolution space, cause the waste in dise knife cloth tooth space.As further
The geometric center in selection, the preceding cutting face of rotary teeth or the preceding cutting face of rotary teeth rotates against the offset distance of the rotation axis of tooth
Between 1~32mm.
Alternatively, the cutting element on rotary teeth is 1-6.In the program, the cutting element on rotary teeth can be 1
It is individual, or multiple, can be set according to the actual size of bit size, rotary teeth size and cutting element on rotary teeth and cut
Cut the quantity of element.Used as further selection, the cutting element on rotary teeth is 1,2 or 3.
Alternatively, 1 dise knife is set on bit body.After outside diameter determines, the space on drill bit is limited and preciousness
's.1 dise knife is only set on drill bit, is conducive to the small-sized of drill bit.When the well bored is smaller, correspondence outside diameter is smaller
When, the space for leaving dise knife on drill bit for is limited, and can only set 1 dise knife on drill bit forms.Only 1 drill bit of dise knife, its disk
Knife is generally large with the contact area of bottom rock, and most of surfaces contact with bottom rock on dise knife, the cutting tooth on dise knife
Butt formula fractured rock will be scraped with relatively long distance, using the rotary teeth of this patent on dise knife, be conducive to improving dise knife and drill bit
Efficiency of breaking rock, extend drilling life of bit.
Alternatively, 2-4 dise knife is provided with bit body.Multiple disk can be set when outside diameter is larger, on drill bit
Knife, such as 2-4 dise knife.Multiple dise knifes are set on drill bit, bit cutting structure can be made more balanced more symmetrical, be conducive to improving drill bit
Stability during work.
Alternatively, it is additionally provided with stationary cutting structure on bit body.Dise knife forms composite construction with stationary cutting structure
Drill bit, the composite-structure drill bit can form various scraping and cut effect and shaft bottom simultaneously, and formation intersection is scraped and cut, and is conducive to improving drill bit
Efficiency of breaking rock.Alternatively, impact cutting structure is additionally provided with bit body.Dise knife forms composite construction with impact cutting structure
Drill bit, the composite-structure drill bit will impact and scrape to cut to be combined with each other can significantly improve the efficiency of breaking rock of drill bit.Alternatively, bore
Cone structure or disc drill bit structure cutting structure etc. also can be set on head body, combination and the disk of above-mentioned various structures is may also be
Knife combines to form composite-structure drill bit.
Alternatively, impact cutting structure is additionally provided with bit body.Alternatively, gear wheel also can be set on bit body.
Dise knife can be combined to form composite junction with one or more in stationary cutting structure, impact cutting structure, the broken rock structure such as gear wheel
Structure drill bit.
Alternatively, rotary teeth is arranged on the stationary cutting structure of bit body.Further, rotary teeth is arranged on drill bit
On the center portion region in footpath inside 1/3rd.When drill bit creeps into complexity（During such as compound drilling）, cutting tooth complicated movement, cutting tooth
With respect to rock scrape butt to change greatly and change frequently.Rotary teeth is applied on the stationary cutting structure on bit body, energy
That improves cutting tooth scrapes butt to adaptability, improves cutting tooth service life, and then improve the service life of drill bit.Bit
When there is the compound movements such as lateral vibration in drilling process, the cutting tooth of drill bit center portion cuts direction change frequently easily generation mistake too early because scraping
Effect, rotary teeth is set on the center portion region in drill bit footpath inside 1/3rd, can strengthen drill bit center portion cutting tooth scrape butt to
Adaptability, improves drilling life of bit.
Alternatively, fortune of the restricted rotary teeth on rotation axis direction is set between the rotary shaft and dise knife of rotary teeth
Dynamic locking mechanism.In the program, rotary teeth is arranged on when on dise knife, to prevent rotary teeth along the direction play of rotation axis or
Come off along axis, locking mechanism can be set between rotary teeth and dise knife, strengthen the reliability and security of rotary teeth.Here
Locking refers to that rotary teeth is spacing along the direction of rotation axis, prevents rotary teeth along the direction play of rotation axis or comes off, and
Rotation of the rotary teeth relative to dise knife is not limited.
As further selection, locked using ball between the rotary shaft and dise knife of rotary teeth.Ball locking can subtract as far as possible
While influenceing rotary teeth rotary motion less, can realize rotary teeth along its rotation axis direction is spacing and axial locking, and just
In processing.
Alternatively, it is provided with sealing structure between the rotary shaft and dise knife of rotary teeth.In the program, during bit operation at
In the environment such as drilling fluid, landwaste, rotary teeth can rotate relative to dise knife, to prevent other materials from entering the rotation of rotary teeth and dise knife
Turn that between pair sealing structure can be set between rotary teeth and dise knife, to reduce the abrasion of revolute, extend the use of revolute
Life-span.
Foregoing main scheme of the invention and its each further selection scheme can be this with independent assortment to form multiple schemes
Invention can be used and claimed scheme；And the present invention,（Each non conflicting selection）Between selection and and other selections between
Can also independent assortment.Those skilled in the art can understand have after the present invention program is understood according to prior art and common knowledge
Multiple combination, is claimed technical scheme of the invention, and exhaustion is not done herein.
Brief description of the drawings
Fig. 1, Fig. 2 are the structural representation of the embodiment of the present invention 1.
Fig. 3 scrapes schematic diagram when cutting through rock for the rotary teeth of the embodiment of the present invention 1.
Fig. 4 is the structural representation for setting stepped axle journal shape for the rotary shaft of the rotary teeth of the embodiment of the present invention 1.
Fig. 5 is cylindrical structural representation for the rotary shaft of the rotary teeth of the embodiment of the present invention 1.
Fig. 6, Fig. 7 are the structural representation of 2 for the cutting element on the rotary teeth of the embodiment of the present invention 1.
Fig. 8, Fig. 9 are the schematic diagram that stationary cutting structure is provided with the bit body of the embodiment of the present invention 2.
Figure 10 is that locking mechanism and sealing structure are provided between the embodiment of the present invention 4, the rotary teeth of embodiment 5 and dise knife
Structural representation.
Figure 11 is routine PDC toothing schematic diagrames.
Figure 12 is the normal schematic diagram scraped when cutting through rock of conventional PDC teeth.
Figure 13, Figure 14, Figure 15 are respectively semicolumn for the shape of the cutting element on the rotary teeth of the embodiment of the present invention 1
Shape, wedge-shaped and vertically arranged cylindrical structural representation.
In figure：1st, bit body, 2, dise knife, 3, rotary teeth, 31, PDC tooth matrixes, 32, the polycrystalline diamond layer of PDC teeth, 33,
The preceding cutting face of rotary teeth, 34, the rotation axis of rotary teeth, 35, the rear cutting face of rotary teeth, 36, the rotary shaft of rotary teeth,
37th, the back side in the preceding cutting face of rotary teeth, 4, stationary cutting structure, 41, fixed cutting tooth, 5, sealing structure, 6, locking mechanism,
7th, rock.
Specific embodiment
Following non-limiting examples are used to illustrate the present invention.
Embodiment 1：
There is the diamond bit of rotary teeth, including bit body 1 and dise knife 2, dise knife 2 is with bit body 1 on a kind of dise knife
Connection is rotated, dise knife 2 can be rotated relative to bit body 1, cutting tooth is provided with dise knife 2, the cutting tooth on dise knife 2 at least
It is rotary teeth 3, rotary teeth 3 is formed to rotate with dise knife 2 and is connected, and rotary teeth 3 can be rotated relative to dise knife 2.Alternatively, such as this implementation
Shown in example, rotary teeth 3 includes rotating the rotary shaft 36 being connected with dise knife 2, and is fixed on the cutting element in rotary shaft 36, disk
The axis hole of the rotary shaft 36 for accommodating matching rotation tooth 3 is correspondingly provided with knife 2, is rotated on dise knife 2 in the insertion axis hole of rotary shaft 36.
Rotary shaft 36 can have a diversified forms, and such as Fig. 4,7 are the rotary shaft 36 of rotary teeth 3 to set stepped axle journal shape, Fig. 5,6
For the rotary shaft 36 of rotary teeth 3 is cylinder.Cutting element is consolidated in the top surface of rotary shaft 36, its front end face（Before wearing layer
End face）Top surface with rotary shaft 36 has angle, and cutting element can also have various ways with the consolidation form of rotary shaft 36：Example
As shown in Figure 4,5, its part of matrix and wearing layer side are absorbed in and being fixed in top surface, or as shown in Figure 6,7, the shape in top surface
Into a boss, its body portion side is absorbed in be fixed in boss, and wearing layer then exposure in outside boss.The cutting of rotary teeth 3
The rotation axis 34 that the preceding cutting face 33 of element or the geometric center O in preceding cutting face 33 rotate against tooth 3 offsets, and rotary teeth 3
Rear cutting face 35 or rear cutting face 35 geometric center in skew side homonymy, preceding cutting face 33 relatively after the close rotation in cutting face 35
Turn the rotation axis 34 of tooth, and can be rotated on dise knife 2 around rotation axis 34.Alternatively, the cutting element on rotary teeth 3 is
Composite polycrystal-diamond（PDC teeth）, polycrystal diamond composite teeth, TSP composite teeth（Piece）, impregnated Buddha's warrior attendant
Stone tooth（Block）, the composite teeth that is mutually composited with impregnated diamond of cubic boron, ceramic tooth or polycrystalline diamond.As entering
One step is selected, and the cutting element on rotary teeth 3 is composite polycrystal-diamond（PDC teeth）.Composite polycrystal-diamond is by glomerocryst
Diamond layer 32 and the two parts of matrix 31 are constituted（Referring to Figure 11）, the front end face of wherein polycrystalline diamond layer 32 is cutting element
Preceding cutting face 33, side be rear cutting face 35（With reference to Fig. 3）.Alternatively, the cutting element on rotary teeth 3 is shaped as half
Cylinder（With reference to Figure 13）, wedge shape（With reference to Figure 14）Or vertically arranged cylinder（With reference to Figure 15）Deng.Alternatively, rotary teeth
The geometric center O in 3 preceding cutting face 33 or the preceding cutting face 33 of rotary teeth 3 rotates against the offset distance S of the rotation axis 34 of tooth 3
More than the radius of rotary shaft 36 of rotary teeth 3（Cylinder or the radius of necked part that rotary shaft 36 is placed in axis hole）Eight/
One, less than the twice of the radius of rotary shaft 36（With reference to Fig. 3, Figure 10）.As further selection, the preceding cutting face 33 of rotary teeth 3 or
The geometric center in the preceding cutting face 33 of rotary teeth 3 rotates against the offset distance S of the rotation axis 34 of tooth 3 between 1~32mm.Rotation
The cutting element turned on tooth can be 1, or multiple.Alternatively, the cutting element on rotary teeth 3 is 1-6.Make
It is further selection, the cutting element on rotary teeth 3 is 1（As shown in Figure 1, Figure 2）, 2（Such as Fig. 6, Fig. 7）Or 3.Cutting unit
At 1, the normal of the preferably mistake geometric center in the preceding cutting face of rotary teeth rotates axis and intersects.When cutting unit is multiple
When, the preceding cutting face 33 of each cutting unit is side by side towards rotation axis 34, and it is uniform to rotate against axis 34 or so.Bit body 1
It is upper that one or more dise knifes 2 can be set.Alternatively, 1 dise knife 2 is set on bit body 1；Alternatively, set on bit body 1
There is 2-4 dise knife, with reference to shown in Fig. 1,2,8,9,2 dise knifes are provided with bit body 1.
Embodiment 2：
With reference to shown in Fig. 8,9, the present embodiment is substantially the same manner as Example 1, and its difference is：It is additionally provided with bit body 1
Stationary cutting structure 4, is provided with fixed cutting tooth 41 on stationary cutting structure 4.Alternatively, rotary teeth 3 is arranged on bit body 1
Stationary cutting structure 4 on.
Embodiment 3：
The present embodiment is substantially the same manner as Example 1, and its difference is：Impact cutting structure is additionally provided with bit body 1.Make
It is selection, is provided with dise knife 2, stationary cutting structure 4 and impact cutting structure on bit body 1 simultaneously.Dise knife 2 can cut with fixed
One or more combination in the broken rock structures such as structure, impact cutting structure, gear wheel forms composite-structure drill bit.
Embodiment 4：
With reference to shown in Figure 10, the present embodiment is substantially the same manner as Example 1, and its difference is：The rotary shaft and tooth of rotary teeth 3
Restricted rotary teeth 3 is set along the direction of rotation axis 34 with respect to the locking mechanism 6 that dise knife 2 is moved between wheel 2.The rotation of rotary teeth 3
Elastic collar structure can be set between rotating shaft and dise knife 2, to prevent rotary teeth 3 along the direction play of rotation axis 34 or along axis
Come off, helicitic texture can be set between rotary teeth 3 and dise knife 2, by nut by the spacing rotation perforation in dise knife 2 of rotary teeth 3
Rotary teeth 3 is inside prevented along the direction play of rotation axis 34 or is come off.As further selection, adopted between rotary teeth 3 and dise knife 2
Locked with ball（Such as Figure 10）.
Embodiment 5：
With reference to shown in Figure 10, the present embodiment is substantially the same manner as Example 1, and its difference is：The rotary shaft and disk of rotary teeth 3
Sealing structure 5 is provided between knife 2.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. there is the diamond bit of rotary teeth, including bit body and dise knife, dise knife is the company of rotation with bit body on a kind of dise knife
Connect, dise knife can be rotated relative to bit body, and cutting tooth is provided with dise knife, it is characterised in that：Bit body is provided with least one disk
Knife, the cutting tooth at least on dise knife is rotary teeth, and rotary teeth is formed to rotate with dise knife and is connected, the preceding cutting face of rotary teeth
Or the geometric center in the preceding cutting face of rotary teeth rotates against the rotational axis offset of tooth, and the rear cutting face of rotary teeth or after cut
The geometric center of bevel preceding cutting face skew side's homonymy, preceding cutting face relatively after cutting face near rotary teeth rotary shaft
Line, and can be rotated on dise knife around rotation axis.
2. there is the diamond bit of rotary teeth on dise knife according to claim 1, it is characterised in that：Cut before rotary teeth
The geometric center in the preceding cutting face of bevel or rotary teeth rotates against the rotation of the offset distance more than rotary teeth of the rotation axis of tooth
/ 8th of axle radius, less than the twice of rotary shaft radius.
3. there is the diamond bit of rotary teeth on dise knife according to claim 1 and 2, it is characterised in that：Rotary teeth
The geometric center in the preceding cutting face of preceding cutting face or rotary teeth rotate against the offset distance of the rotation axis of tooth 1~32mm it
Between.
4. there is the diamond bit of rotary teeth on dise knife according to claim 1, it is characterised in that：Cutting on rotary teeth
It is 1-6 to cut element.
5. there is the diamond bit of rotary teeth on dise knife according to claim 1, it is characterised in that：Also set on bit body
It is equipped with stationary cutting structure.
6. there is the diamond bit of rotary teeth on dise knife according to claim 1, it is characterised in that：Cut before rotary teeth
The normal of the mistake geometric center of bevel rotates axis and intersects.
7. there is the diamond bit of rotary teeth on dise knife according to claim 5, it is characterised in that：Rotary teeth is arranged on
On the stationary cutting structure of bit body.
8. there is the diamond bit of rotary teeth on dise knife according to claim 1, it is characterised in that：The rotation of rotary teeth
The locking mechanism of motion of the restricted rotary teeth on rotation axis direction is set between axle and dise knife.
9. there is the diamond bit of rotary teeth on dise knife according to claim 8, it is characterised in that：The rotation of rotary teeth
Locked using ball between axle and dise knife.
10. there is the diamond bit of rotary teeth on dise knife according to claim 1, it is characterised in that：The rotation of rotary teeth
Sealing structure is provided between rotating shaft and dise knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274284.4U CN206190217U (en) | 2016-11-25 | 2016-11-25 | Last diamond bit who has rotary teeth of disc cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274284.4U CN206190217U (en) | 2016-11-25 | 2016-11-25 | Last diamond bit who has rotary teeth of disc cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190217U true CN206190217U (en) | 2017-05-24 |
Family
ID=58724533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621274284.4U Withdrawn - After Issue CN206190217U (en) | 2016-11-25 | 2016-11-25 | Last diamond bit who has rotary teeth of disc cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190217U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368617A (en) * | 2016-11-25 | 2017-02-01 | 西南石油大学 | Diamond drill bit with rotating teeth on disc cutters |
| WO2018095441A1 (en) * | 2016-11-25 | 2018-05-31 | 西南石油大学 | Single cone bit having rotating tooth |
| CN109306851A (en) * | 2017-07-28 | 2019-02-05 | 西南石油大学 | A kind of rotary cutting module and the diamond bit with this module |
-
2016
- 2016-11-25 CN CN201621274284.4U patent/CN206190217U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368617A (en) * | 2016-11-25 | 2017-02-01 | 西南石油大学 | Diamond drill bit with rotating teeth on disc cutters |
| WO2018095441A1 (en) * | 2016-11-25 | 2018-05-31 | 西南石油大学 | Single cone bit having rotating tooth |
| CN106368617B (en) * | 2016-11-25 | 2018-11-02 | 成都海锐能源科技有限公司 | Diamond bit with rotary teeth on dise knife |
| US10961784B2 (en) | 2016-11-25 | 2021-03-30 | Southwest Petroleum University | Rotating cutter single cone bit |
| CN109306851A (en) * | 2017-07-28 | 2019-02-05 | 西南石油大学 | A kind of rotary cutting module and the diamond bit with this module |
| CN109306851B (en) * | 2017-07-28 | 2024-03-15 | 西南石油大学 | Rotary cutting module and diamond drill bit with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170524 Effective date of abandoning: 20181102 |