CN108868625A - A kind of combined cut diamond bit - Google Patents
A kind of combined cut diamond bit Download PDFInfo
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- CN108868625A CN108868625A CN201710819577.9A CN201710819577A CN108868625A CN 108868625 A CN108868625 A CN 108868625A CN 201710819577 A CN201710819577 A CN 201710819577A CN 108868625 A CN108868625 A CN 108868625A
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- dise knife
- cutting
- wing
- drill bit
- bit
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 28
- 239000010432 diamond Substances 0.000 title claims abstract description 28
- 238000005520 cutting process Methods 0.000 claims abstract description 287
- 239000003921 oil Substances 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000004519 grease Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 239000011799 hole material Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 34
- 210000000515 tooth Anatomy 0.000 description 117
- 238000010586 diagram Methods 0.000 description 27
- 238000005553 drilling Methods 0.000 description 21
- 239000004744 fabric Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 11
- 238000013461 design Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 239000002131 composite material Substances 0.000 description 7
- 230000002146 bilateral effect Effects 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 210000000332 tooth crown Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A kind of combined cut diamond bit, including bit body, extend from bit body or the fixing wing being fixedly connected with bit body, dise knife, water channel slot, hydrophthalmia or nozzle between fixing wing, wing cutting element is provided in the fixing wing, on the bit body at least one by the dise knife with thereon dise knife cutting tooth and the dise knife cutting unit that is constituted of dise knife axis, dise knife is mounted on dise knife axis, or it is integrated with dise knife axis, the offset angular region of the dise knife is 20 °≤| α |≤90 °, it is characterised in that：At least one dise knife is set in the water channel slot in a fixing wing or between two fixing wings, the two sides of the dise knife cutting unit are supported on supporting mass respectively, and it is formed and is rotatablely connected with supporting mass, the working life of dise knife bearing can effectively be extended, improve dise knife cutting unit security performance in use, to effectively improve the efficiency of breaking rock and working life of drill bit.
Description
Technical field
The invention belongs to oil-gas drilling engineering, mine engineering, building foundation engineering constructions, geological drilling, tunnel
A kind of technical equipment such as engineering, the hydrology and no-dig technique field, and in particular to combined cut diamond bit.
Background technique
Drill bit is in drilling engineering to fractured rock, the rock crushing tool of formation pit shaft.Tricone bit and PDC（Plycrystalline diamond
Diamond compact）Drill bit is to make drill bit with the most use in current drilling engineering.
Tricone bit is mainly to impact the form broken rock crushed.The gear wheel deviation angle of existing tricone bit does not surpass mostly
5 ° are crossed, drill bit is in shaft bottom rotary drilling, wheel body speed ratio（The ratio between gear wheel revolving speed and drill speed when bit is crept into）It is big
In 1, gear wheel is fast around the velocity of rotation of bit leg journel, and the time that the tooth on gear wheel is in contact with bottom rock is very short, and tooth exists
The distance of shaft bottom sliding is also very short, and drill bit acts on come broken rock the punching press of rock using tooth.Low bearing life is to restrict three teeth
Take turns one of the principal element of drilling life of bit.
PDC drill bit by high rigidity, it is wear-resisting, from sharp composite polycrystal-diamond（Abbreviation PDC tooth or cutting tooth）As
Cutting element is sheared and fractured rock.PDC drill bit rate of penetration in soft-medium hard formation is high, the service life is long, and drilling cost is low,
Therefore it is used widely in the drilling of oil/gas well.
Chinese patent " PDC drill bit for being adapted to drilling high abrasive stratum "（The patent No.：200810139793.X）In, arrangement
Cutting tooth in fixing wing is in two layers of arrangement in drill bit shaft upwards, forms parallel or approximately parallel two sets of cutting wheels
It is wide.On the basis of not reducing rate of penetration, extend the service life in high abrasive stratum.From beauty in 2009
Shell Hughes Electronics of state gear wheel-PDC composite drill bit technology is succeeded in developing, and domestic and international research unit and manufacturing enterprise start pair
Composite drill bit is studied, and develops patented product with independent intellectual property rights.Shell Hughes Electronics in recent years in succession to
The U.S. and World Intellectual Property Organization have submitted more parts of patent applications, wherein United States Patent (USP) " Hybrid bit with
variable exposure"（The patent No.：US 8336646 B2）In, it is cut for the cutting profile and fixation of gear wheel cutting unit
The cutting profile for cutting unit has carried out several matched designs.Chinese patent " a kind of combined drill with cutting way broken rock "
（The patent No.：201010229371.9）In, the runner with big deviation angle has been set using PDC tooth as primary cutting element for the first time
（20 ° of the range of offset angle in this application≤| α |≤90 ° of runner, that is, herein described dise knife）On, while being also provided with and being equipped with
The fixation cutting unit of fixed cutting tooth（Including wing structure）.The installation of big deviation angle makes the PDC tooth on dise knife cutting unit
The scratch of helix is formed in shaft bottom, the concentric circles scratch of cutting tooth forms crossing net on helix scratch and fixed cutting unit
The downhole mode of shape.But the art solutions have continued to use the technology of tricone bit bearing arrangement, and dise knife, which is set to, to be had
On the bit leg of axle journal, is formed and be rotatablely connected with bit leg.Since its bearing arrangement is using the structure of unilateral bearing, in bearing arrangement
Etc. Shortcomings or defect, drill bit drilling when as impact or vibrate when, it will influence the service life of bearing arrangement,
And then influence the service life of drill bit.
Assuming that there is a section plane by certain point in drill axis and drill bit on drill bit（Referred to as cross the axis of the point
Line plane or axial plane）.When drill bit rotates under conditions of rate of penetration is zero around own axes, the contour line of cutting element with
Section plane or axial plane are crossed to form intersection, which is the axial plane contour line of cutting element, by the axial plane of all cutting elements
Contour line pools together the shaft bottom coverage diagram to form drill bit, in the coverage diagram of shaft bottom, can be one and all cutting units
The tangent envelope curve of axial plane contour line, referred to as bit cutting contour line, bit cutting contour line reflect drill bit and drill out
Shaft bottom basic configuration feature.Drill body contour line is the position curve for reflecting drill body in the coverage diagram of shaft bottom, is
One important feature curve of diamond bit.The drill bit cloth flank of tooth refers to using drill axis as rotation center, drill body profile
Line is curved surface made of intersecting after radius of turn rotates a circle with drill body.
Summary of the invention
It is an object of the invention to：It proposes a kind of combined cut diamond bit, can make full use of wing formula drill bit
Design feature, at least one dise knife are set in the water channel slot in a fixing wing or between two fixing wings, the disk
The two sides of knife cutting unit are supported on supporting mass respectively, and are formed and be rotatablely connected with supporting mass, the bearing supported using bilateral
System, so that the service life of dise knife cutting unit is improved, to promote the service life and security performance of drill bit.
The object of the invention is realized by following technical proposals：
A kind of combined cut diamond bit, including bit body, extend from bit body or the fixing wing being fixedly connected with bit body,
Water channel slot, hydrophthalmia or nozzle between dise knife, fixing wing, on the bit body at least one by the dise knife with thereon
The dise knife cutting unit that dise knife cutting tooth and dise knife axis are constituted, dise knife are mounted on dise knife axis, or are integrated with dise knife axis, institute
The offset angular region for stating dise knife is 20 °≤| α |≤90 °, it is characterised in that：At least one dise knife is set to a fixing wing
In water channel slot between upper or two fixing wings, the two sides of the dise knife cutting unit are supported on supporting mass respectively, and with branch
It holds body and forms rotation connection.
The offset angle of dise knife=, wherein s is the shifting wheelbase of dise knife, and c is the stand-off of dise knife.Such as Fig. 3, figure
4, shown in Fig. 5, Fig. 6, Fig. 7, AB is drill bit central axis, and CD is dise knife central axis, by dise knife axis CD and is parallel to brill
The face of head axis AB is dise knife polar axis face A1, and A2 is by drill axis AB and perpendicular to the plane of dise knife polar axis face A1, and A3 is
By drill axis AB and it is parallel to the plane of dise knife polar axis face A1.The point that each cutting tooth position coordinates are characterized on dise knife is respectively to cut
The anchor point of tooth is cut, the anchor point of cylindrical PDC tooth is the central point of the diamond working face of tooth, other type cutting tooths
Anchor point is arranged on some specified point of tooth.Generally, the cutting tooth on dise knife is arranged on dise knife in the form of a-circle-by-a-circle,
Plane A4 on dise knife outlet gear ring where each cutting tooth anchor point is dise knife datum plane, dise knife datum plane A4 and dise knife axis
The intersection point E of line CD is dise knife datum mark.It crosses point E and makees vertical line, intersection point F to drill axis AB.Dise knife stand-off c is dise knife base
The distance of E to plane A2 on schedule, it is the distance between drill axis AB and dise knife polar axis face A1 that dise knife, which moves wheelbase s,.Along drill bit
Axis from dise knife to bit adapter hand of spiral in terms of（Seen against drill bit drilling direction）When, the offset angle of dise knife be straight line EF with
Angle between plane A3, that is, offset angle α=, the value of α is between 0~90 °（Containing 0 ° and 90 °）.According to disk
The difference of knife offset direction, deviation angle can be positive value, be also possible to negative value.Dise knife deviation angle sign is defined as：Along with
Drill bit creeps into opposite direction and sees, and the lower section for making E point be located at plane A3（Such as Fig. 6, Fig. 7）If E point is in a left side for A2 plane
Side, then deviation angle is positive（As shown in Figure 6）, otherwise it is negative（As shown in Figure 7）.If E point, in A3 plane, deviation angle is equal to 0 °；
If E point, in A2 plane, deviation angle is equal to 90 °（Or -90 °）.When the absolute value of deviation angle is equal to 90 °, positive offset and negative
The effect of offset is identical.The axial rake β of dise knife is dise knife axis CD and perpendicular to the angle between the plane of drill axis AB.
Water channel slot（Also referred to as water channel）：What is as formed between each wing on drill bit has effects that chip removal, cooling and Hydraulic Circulation
Runner, nozzle or hydrophthalmia are provided in water channel slot（Tap hole of the drilling circulation fluid on drill bit）.Water channel slot can be
Global concept（Whole water channels of drill bit）, it is also possible to the concept of a narrow sense, that is, refers in particular to the water channel of regional area, such as " drill bit
The water channel of center portion ", " water channel of certain wing ", " chip space " etc.." water channel of certain wing " refers to certain wing and adjacent front knife
Water channel slot between the wing, because being exclusively used in the cooling of the wing cutting tooth and the discharge of generated landwaste, so in design concept
There is stronger belonging relation with wing." chip space " refers to the water channel slot at bit gauge protection position.Equally, " chip space " can also be special
Refer to the chip space of certain wing.Water channel slot be on drill bit drilling fluid it is normal on the sprue that returns.Not on drill bit wing or wing it
Between all slot be all water channel slot.If being provided with hydrophthalmia in the slot on certain wing or between wing, though or without hydrophthalmia and brill
The water channel slot at other positions directly leads to, and the gauge area of slot perforation drill bit（Become unobstructed chip removal at gauge position
Slot）, at this time can this slot be referred to as water channel slot.Even if practical nor water channel slot otherwise as water channel slot in shape（In Figure 55
42）.
Fixing wing, wing appendage：It extends from drill body or is fixedly connected with drill body, itself has cutting power
Or it is provided with cutting element on it, and the structure between adjacent blades with water channel slot becomes fixing wing, also referred to as
Wing.Wing can be independent, can be connected with other wing bodies.Y-shaped wing is a kind of form of wing, this wing
Start to branch in specified radial position from inside to outside in shape, is divided into two or more " branches "." branch " is not necessarily knife
The wing, if certain " branch " is equipped with cutting element, and the slot between front " branch " or wing is water channel slot, then is somebody's turn to do " branch "
As soon as it is not otherwise wing with regard to constituting an individual wing, and only a part of former wing, abbreviation wing appendage.
Separate support body：Extend from drill body and the connectionless fulcrum bearing of wing, itself do not have cutting power or
It is not provided with cutting element thereon.According to the difference of dise knife support pattern, separate support body can be divided into single supporting mass again（Unilateral side branch
It holds）With double base body（Bilateral bearing）.
Supporting mass is the general designation of various dise knife cutting unit supporting structures, including fixing wing, wing appendage and independence
Supporting mass.
Cutting element:It is usually also referred to as cutting tooth, mainly includes " scraping cut type element ", " end compression type element " and " impregnated type member
Part " three categories.The first kind " scraping cut type element " refer to scrape cut, the cutting element of shear action fractured rock, referred to as scrape cutting,
It mainly include PDC tooth（Composite polycrystal-diamond）, TSP tooth（Thermostabilization dimond synneusis sheet）.Second class " end compression type element "
Refer to the cutting element with longitudinal crushing and/or percussion fractured rock, abbreviation end compression type tooth or end compression tooth, rock bit
With down-hole percussion drill drill bit use be exactly this tooth.The main tooth shape character of this tooth is outside the working end of tooth has
Convex curved surface crown, tooth pressure resistance with higher, impact resistant strength.The material of end compression type tooth generally uses hard alloy,
To enhance its wearability, surface peening also is done with crown of the diamond to tooth sometimes.Third class " impregnated element " is a kind of incites somebody to action
Diamond particles are distributed in the intracorporal grinding type cutting element of cutting element, including impregnated body（Also impregnated piece is cried）With impregnated tooth two
Class.Impregnated body is usually the monoblock type cutting element being integrated with drill bit wing matrix, and impregnated tooth is then usually to have one
Determine the individuation tooth of form-factor, shape is in the majority with cylindrical body, can be fixedly arranged at wing body etc. using modes such as setting, accumbency
On matrix.
In this patent, at least one dise knife of the drill bit is set in a fixing wing or between two fixing wings
In water channel slot, the two sides of the dise knife cutting unit are supported on supporting mass respectively, and are formed and be rotatablely connected with supporting mass, in this way
The service life of dise knife bearing arrangement can be effectively improved, effectively avoid or reduce cause because of the premature failure of bearing arrangement it is whole
A drill bit loses the generation for continuing the energy force phenomenon of drilling, to promote service life and safety of the entire drill bit in drilling
Energy.Dise knife is set in water channel slot simultaneously, and the water channel slot region moment remains Hydraulic Circulation, can be to dise knife, dise knife axis, bearing
Body, dise knife cutting element are washed away, are cooled down, and dise knife cutting element can be scraped to the landwaste for cutting through rock generation timely from water channel
It is discharged in slot, avoids the influence because of landwaste congestion to dise knife broken rock, and dise knife, dise knife axis, supporting mass can be efficiently reduced
Between because rotation connection caused by thermal wear.Dise knife is set in the water channel slot in a fixing wing or between two wings, when
The supporting mass of dise knife at least side is fixing wing, increases cloth tooth space and the cutter set density of drill bit, bit body is made full use of to have
The space of limit and preciousness, keeps drill bit structure more compact, reliable, and such drill bit can be suitable for complicated bad ground；Work as dise knife
The two sides of supporting mass be separate support body, the size of separate support body, structure, position are cleverer relative to fixing wing
It is living, free, so that the design of dise knife is more flexible, the flexibility of drill bit design is improved, drill bit individual character can be better met
Change the demand of design.Dise knife cutting element can change into be additionally provided on drill bit with bit body be rotatablely connected and shaft bottom rolling or
The gear wheel of impact crushing broken rock（Anti- dress gear wheel outside including small end, big end is inside）, and/or the cloth of sliding opposite with bit body
The movement cutting structure element such as formed punch, impactor of impact cutting tooth is equipped with to be arranged in bit body.
Preferably, the drill bit is at least supported in a fixing wing or one there are also another dise knife completely
In the appendage of wing or on a separate support body.
In above scheme, the dise knife of the drill bit is other than using bilateral bearing, and at least there are one using single branch
The dise knife held（Including the axle journal-wheel cellular type dise knife supported with bit leg）, the diversity of dise knife supporting structure can be adequately and reasonably
Using drill bit space structure, to be conducive to the personalized designs of drill bit.
Preferably, the dise knife cutting unit at least there are two, and be at least set to the same fixation there are two dise knife
On wing or in same water channel slot or in which a dise knife is set on wing, and before the wing is arranged in another dise knife
In water channel slot, also, the two sides of wherein at least one dise knife cutting unit are supported on supporting mass respectively, and are formed with supporting mass
Rotation connection.
In above scheme, dise knife cutting tooth can be increased in the working region in shaft bottom, increase the cutter set density of drill bit, improved
Service life of the drill bit in complicated bad ground.The size of dise knife can be reduced simultaneously, to reduce the height of supporting mass, improve bearing
The intensity of body.
Preferably, the offset angular region of the dise knife be 60 °≤| α |≤90 °.
Above scheme, the deviation angle of dise knife keep the cutting element on dise knife long in the time of shaft bottom and rock contact, sliding
Distance intersects better effect.When the deviation angle of dise knife is timing, in dise knife cutting unit and stationary cutting structure collective effect
Under, drill bit is scraped in shaft bottom and cuts out netted scratch schematic diagram as shown in figure 27；It is inclined when dise knife when the deviation angle of dise knife is negative
Shifting angle is timing, and under dise knife cutting unit and stationary cutting structure collective effect, drill bit is scraped in shaft bottom and cut out as shown in figure 28
Netted scratch schematic diagram；When the deviation angle of dise knife, which has, just has negative, when the deviation angle of dise knife is timing, in dise knife cutting unit
Under stationary cutting structure collective effect, drill bit is scraped in shaft bottom and cuts out netted scratch schematic diagram as shown in figure 30；
Preferably, the dise knife that at least one has at least two cutting elements on drill bit, one of cutting element is PDC
Tooth.
In above scheme, the presence of a variety of cutting elements, which has, is conducive to improve drill bit to the adaptability of particular formation, is promoted and is bored
The comprehensive performance of head.
Preferably, at least one has 1 to 6 dise knife for enclosing cutting element on drill bit, cutting element is respectively enclosed on dise knife
It is to scrape cutting, alternatively, respectively enclosing cutting element part on dise knife is to scrape cutting, while there are also part end compression teeth.
In above scheme, the dise knife that at least one has 1 to 6 circle cutting element on drill bit may be implemented following in this way
The benefit of several aspects：First, multi-turn tooth is the main cutting tooth on dise knife, and multi-turn tooth is in circumferencial direction interlaced arrangement, significantly
Coverage density of the dise knife cutting tooth in the working region of shaft bottom is increased, not only improves phacolith raised on excision shaft bottom, and drop
The low workload of dise knife cutting tooth, therefore drill bit can be made to be improved in the working performance of bad ground.Second, multi-turn tooth
In a certain circle or it is a few circle be dise knife on main cutting tooth, be in addition standby cutting tooth, in this way be convenient in high cutter set density
Under the conditions of realize the settings of primary cutting structures and standby cutting structure on same dise knife, have drill bit in bad ground more longlasting
Ability to work.
Preferably, at least one dise knife with impregnated element on drill bit, and cut in dise knife cutting element with wing
The collectively covering in region of element is cut, the cutting element in fixing wing includes PDC tooth and/or impregnated element.
Above scheme can effectively improve the service life of dise knife cutting element, and then promote the service life of drill bit, especially
It is can to effectively improve the service life of drill bit when encountering the bad grounds such as high abrasive, high rigidity, saves drilling cost.
Preferably, being arranged in the dise knife cutting element of radial zone and wing cutting member other than drill bit one third radius
Part is impregnated element.
In above scheme, it is arranged in the dise knife cutting element of radial zone and wing cutting other than drill bit one third radius
Element is impregnated element.For drill bit in drilling, the cutting element abrasion in the region other than the outer one third radius of drill bit is the most
Seriously, the rub proofness of impregnated cutting element considerably beyond most of cutting element, drill bit one third radius with
The dise knife cutting element and single cutting element of exterior domain are impregnated element, can be good at solution drill bit and are radially seriously worn
Uneven situation, to save drilling cost, improves drilling efficiency to improve the service life of drill bit.
Preferably, at least being collectively covered in region in the part of dise knife cutting element and wing cutting element, the disk
The cutting contour line of knife cutting unit is not less than the cutting contour line of fixing wing.
Above scheme, the cutting contour line of dise knife are not less than the cutting contour line of stationary cutting structure, can play
The effect of several aspects.First, when the cutting profile of dise knife cutting unit is slightly above the cutting profile of stationary cutting structure, bore
Head works in shaft bottom is first formed the phacolith of certain altitude by dise knife cutting unit in shaft bottom cutting broken rock, then by wing cutting element
Broken phacolith, can effectively improve the efficiency of breaking rock of drill bit, lower comminution energy conssumption；Second, when the cutting profile of dise knife cutting unit
When being apparently higher than the cutting profile of wing cutting element, for drill bit when shaft bottom works, dise knife cutting unit is as the first cutting member
Part（Also referred to as level-one cutting element）With rock contact, broken rock is carried out.Wing cutting element is as standby cutting element（Also referred to as two
Grade cutting element）, wing cutting element is taken over dise knife cutting unit and is continued brokenly after dise knife cutting unit is worn to a certain extent
Rock can effectively improve the service life of drill bit, while can effectively reduce because the ratio of tooth forces down caused by drill bit cutter set density is excessively high
The phenomenon that, improve the efficiency of breaking rock of drill bit.
Preferably, oil storage hole is arranged on the supporting mass of bearing dise knife cutting unit, storage is installed in oil storage hole
Oil sac, lubricating oil or grease adding are connected in oil storage bag, through oilhole with dise knife bearing bore.
Above scheme is arranged oil storage compensation system in supporting mass, obtains bearing under prolonged severe duty sufficiently
Lubrication, avoid the scuffing failure of bearing, extend the working life of bearing.
Beneficial effects of the present invention：
1, gear wheel and/or dise knife in existing composite drill bit have been broken and dise knife are set to by dise knife using the method for unilateral bearing
Be set in the water channel slot in a fixing wing or between two fixing wings, using bilateral supporting structure, improve bearing by
Power situation can effectively extend the working life of dise knife bearing especially when encountering the adverse factors such as shock and vibration；Bilateral branch
Bearing structure dise knife is not easily to fall off, can effectively improve dise knife cutting unit security performance in use；Dise knife in water channel
It can preferably be cooled down, be cleaned, that is, advantageously reduce the thermal wear of dise knife cutting tooth, and the work of dise knife bearing can be effectively reduced
Make temperature, be conducive to the performance for ensureing bearing seal, and reduce the scuffing failure of bearing sliding pair, in high abrasive, high temperature
Layer drilling especially has advantage.
2, dise knife is set in water channel slot, and the water channel slot region moment remains Hydraulic Circulation, can to dise knife, dise knife axis,
Supporting mass, dise knife cutting element are washed away, are cooled down, dise knife cutting element can be scraped cut through rock generation landwaste arrange in time
Out, the influence because of landwaste congestion to dise knife broken rock is avoided.
3, dise knife cutting unit is set between two adjacent fixing wings, and cloth tooth space and the cloth tooth that can increase drill bit are close
Degree improves drill bit in the service life of complicated bad ground；The two sides of the supporting mass of dise knife are separate support body, so that dise knife
Design it is more flexible, improve drill bit design flexibility, the demand of drill bit personalized designs can be better met.
4, dise knife is set between two wings, manufacturing process is simple, at low cost, high reliablity.
5, the cutting structure that various combination scheme is used on dise knife, is conducive to improve drill bit to the adaptability of particular formation,
Promote bit performance.
6, it can effectively improve PDC tooth to bottom rock using PDC tooth is used on impregnated cutting element, wing on dise knife
Infiltration capability reduces the slipping phenomenon for even avoiding PDC tooth in hard formation drilling.
7, it is all made of impregnated cutting element on dise knife and wing, can will intersects cutting principle and is realized in micro-cutting, thus
Drill bit is effectively improved in hard formation, the efficiency of breaking rock of high abrasive stratum and working life.
Detailed description of the invention
Fig. 1 is the disc cutter composite drill bit schematic diagram that the present invention has double supporting structure.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the signal that dise knife geometric position parameter of the invention moves wheelbase s, stand-off c, offset angle and axial rake β
Figure.
Fig. 4 is that dise knife and dise knife axis of the invention are rotatablely connected, when the both ends of dise knife axis are fixedly connected with fixing wing,
Cross-sectional view of the dise knife of one dise knife cutting unit along dise knife polar axis face.
Fig. 5 is that dise knife of the invention is fixedly connected with dise knife axis, when the both ends of dise knife axis are rotatablely connected with fixing wing,
Partial sectional view of the fixing wing along dise knife polar axis face.
Fig. 6 is dise knife positive offset of the present invention, deviation angle is that dise knife is opposite on drill bit when positive value is overlooked along drill axis
The schematic diagram of geometric position and parameter s, c, α.
Fig. 7 is dise knife negative offset of the present invention, deviation angle is that dise knife is opposite on drill bit when negative value is overlooked along drill axis
The schematic diagram of geometric position and parameter s, c, α.
Fig. 8 is the unequal drill bit schematic diagram of dise knife deviation angle of the present invention.
Fig. 9 is that there are two the drill bit top views of dise knife cutting element for setting in the present invention.
Figure 10 is that dise knife cutting unit is set to the drill bit schematic diagram between fixing wing and wing accessory structure.
The top view of Figure 11 Figure 10.
Figure 12 is the disc cutter composite drill bit radial direction cloth tooth figure that the present invention has double supporting structure.
Figure 13 is that dise knife cutting unit is set to the drill bit top view between two independent wings.
Figure 14 is provided with the top view of multiple dise knifes between two wing of drill bit of the present invention.
Figure 15 is the region Fig. 6 drill bit I radial direction cloth tooth figure.
Figure 16 is the radial cloth tooth figure that dise knife cuts that profile cuts profile lower than other wings.
Figure 17 is that a gear ring of the dise knife with two circle teeth cuts the drill bit diameter that profile cuts profile lower than other wings
To cloth tooth figure.
Figure 18 is that a gear ring of the dise knife with two circle teeth cuts the drill bit diameter that profile is higher than other wings cutting profile
To cloth tooth figure.
Figure 19 is the drill bit radial direction cloth tooth figure that dise knife cuts that profile is higher than other wings cutting profile.
Figure 20 is the drill bit top view that PDC tooth, conical tooth are provided in dise knife of the present invention cutting.
Figure 21 is that there are two the drill bit top views of gear ring for setting on dise knife cutting unit of the present invention.
Figure 22 is the schematic diagram of two circle tooth of setting on dise knife（1）.
Figure 23 is the schematic diagram of two circle tooth of setting on dise knife（2）.
Figure 24 is the schematic diagram that conical tooth and PDC tooth are arranged on dise knife.
Figure 25 is the schematic diagram that different-diameter PDC tooth is provided on dise knife.
Figure 26 is the schematic diagram that oval tooth is provided on dise knife.
Figure 27 is dise knife of the present invention when being positive offset, under dise knife cutting unit and stationary cutting structure collective effect, bores
Head scrapes the netted scratch schematic diagram cut out in shaft bottom.
Figure 28 is dise knife of the present invention when being negative offset, under dise knife cutting unit and stationary cutting structure collective effect, bores
Head scrapes the netted scratch schematic diagram cut out in shaft bottom.
Figure 29 exists simultaneously for the positive and negative offset dise knife cutting unit of the present invention, and two dise knifes of offset direction on the contrary
When deviant is equal in magnitude, under dise knife cutting unit and stationary cutting structure collective effect, drill bit shaft bottom scrape cut out it is more
Retransposing scratch schematic diagram.
Figure 30 is dise knife and dise knife axis one, is rotatablely connected schematic diagram between dise knife axis and wing.
Figure 31 is the cross-sectional view A-A of Figure 13.
Figure 32 is that dise knife is fixedly connected with dise knife axis by key, is rotatablely connected schematic diagram between dise knife axis and wing.
Figure 33 is rotatablely connected between dise knife and dise knife axis, is connected by key schematic diagram between dise knife axis and wing.
Figure 34 is rotatablely connected between dise knife and dise knife axis, is rotatablely connected schematic diagram between dise knife axis and wing.
Figure 35 is the diameter drill bit of different-diameter tooth there are two types of settings on dise knife of the present invention to cloth tooth figure.
Figure 36 is to offer oil storage compensation hole in fixing wing of the present invention.
Figure 37 is the G-G partial sectional view of oil storage bag in Figure 47.
Figure 38 is the schematic diagram of rotary teeth.
Figure 39 is the dise knife schematic diagram for being equipped with rotary teeth.
Figure 40 is the schematic diagram that dise knife is provided on impregnated bit.
Figure 41 dise knife cutting element is impregnated vertical tooth.
Figure 42 dise knife cutting element is impregnated sleeping tooth.
Figure 43 dise knife cutting element is impregnated body, and the chamfered shape of dise knife is waveform.
Figure 44 dise knife cutting element is impregnated body, is a part of dise knife.
Figure 45 is the contrary schematic diagram of deviation angle of two dise knife of drill bit.
Figure 46 is that a dise knife is set to a wing front end and using the drill bit top view of unilateral support connection in the present invention.
Figure 47 is that a dise knife is set to a wing rear end and using the drill bit top view of unilateral support connection in the present invention.
Figure 48 is that a dise knife is set on bit leg and using the drill bit top view of unilateral support connection in the present invention.
Figure 49 is the drill bit top view that dise knife uses a variety of support patterns in the present invention.
Figure 50 is that dise knife is set between wing and separate support body and using the drill bit of unilateral support connection in the present invention
Top view.
Figure 51 is that dise knife is set on wing in the present invention, and is supported between wing and separate support body and using unilateral
The drill bit top view of connection.
Figure 52 is the cross-sectional view B-B of Figure 51.
Figure 53 is the dise knife cutting element and wing cutting element of radial zone other than drill bit one third radius of the present invention
It is radial cloth tooth Fig. 1 of impregnated element.
Figure 54 is the dise knife cutting element and wing cutting element of radial zone other than drill bit one third radius of the present invention
It is radial cloth tooth Fig. 2 of impregnated element.
Figure 55 be one dise knife of drill bit of the present invention be set between two interconnected wing, a dise knife be set to wing ontology and
Drill bit top view between wing appendage.
Figure 56 is that one dise knife of drill bit of the present invention is set to the drill bit top view between two double base bodies.
Mark explanation
1- bit body；11- nozzle/hydrophthalmia；12- water channel slot；13- oil storage hole.
2- dise knife cutting unit；21- dise knife body；22- dise knife cutting element；221-PDC tooth；222- conical tooth；223- is pregnant
Inlay body；The impregnated sleeping tooth of 224-；The impregnated perpendicular tooth of 225-；226- rotary teeth；2261- toothholder；2262- cutting part；2263- diamond
Layer；23- dise knife axis；24- dise knife axle sleeve；25- key.
3- sealing ring.
4- fixing wing；41- wing ontology；42- wing appendage；43- wing cutting element；431-PDC tooth；432-
Conical tooth；The impregnated body of 433-；The impregnated sleeping tooth of 434-；The impregnated perpendicular tooth of 435-；436- rotary teeth；4361- toothholder；4362- cutting portion
Part；4363- diamond layer.
5- separate support body；The mono- supporting mass of 51-（Bit leg）；52- double base body.
6- oil storage compensation system.
7- bit cutting contour line；71- wing cuts contour line；72- dise knife cuts contour line.
8- wing body profiles line.
The shaft bottom 9- Cutting trajectory line；91- wing cutting tooth shaft bottom Cutting trajectory line；The cutting of 92- positive offset angle dise knife shaft bottom
Trajectory line；93- negative offset angle dise knife shaft bottom Cutting trajectory line.
10- weld seam.
14- washer/plug.
Specific embodiment
Following non-limiting examples are for illustrating the present invention
Basic example
A kind of combined cut diamond bit, including bit body 1, the fixing wing for extending from bit body or being fixedly connected with bit body
4, the water channel slot 12 between dise knife 21, fixing wing, hydrophthalmia or nozzle 11 are provided with wing cutting member in the fixing wing 4
Part 43, on the bit body at least one by the dise knife 21 with thereon dise knife cutting tooth 22 and dise knife axis 23 constituted
Dise knife cutting unit 2, dise knife 21 are mounted on dise knife axis 23, or are integrated with dise knife axis 23, the deviation angle model of the dise knife 21
Enclose is 20 °≤| α |≤90 °, it is characterised in that：At least one dise knife 21 is set in a fixing wing 4 or two fixing cutters
In water channel slot 12 between the wing, the two sides of the dise knife cutting unit 2 are supported on supporting mass respectively, and are formed and turned with supporting mass
Dynamic connection, as shown in Fig. 1,2,9,10,11,50,55,56.
Alternatively, at least one described dise knife 21 of the drill bit is set between two adjacent fixing wings 5, and
Dise knife 21 and fixing wing 4, which are formed, to be rotatablely connected, as shown in Fig. 1,2,9,55,56.
Alternatively, at least one described dise knife 21 of the drill bit be set to fixing wing 4 and wing appendage 42 it
Between, and rotation connection is formed between dise knife 21 and fixing wing 4, wing appendage 42, as shown in Figure 10,11,55.
Alternatively, at least one described dise knife 21 of the drill bit be set to fixing wing 4 and separate support body 5 it
Between, and rotation connection is formed between dise knife 21 and fixing wing 4, separate support body 5, as shown in figure 50.
Alternatively, at least one described dise knife 21 of the drill bit is set between two separate support bodies 5, and dise knife
Rotation connection is formed between 21 and separate support body 5, as shown in figure 56.
Alternatively, be at least supported in a fixing wing completely there are also another dise knife or wing it is attached
Belong on body or on a separate support body.As shown in Figure 46,47,48,49, at least one dise knife 21 is complete on the drill bit
It is supported on 4 front end of fixing wing；As shown in figure 47, at least one dise knife 21 is supported on one admittedly completely on the drill bit
4 rear end of the stationary knife wing；As shown in Figure 48,49, at least one dise knife 21 is supported on single supporting mass completely on the drill bit（Bit leg）
On 51；Same at least one dise knife 21 of the drill bit be set in a wing appendage 42 or a single supporting mass 51 on,
And dise knife 21 forms rotation connection using unilateral bearing, and with the supporting mass.
Alternatively, the dise knife cutting unit 2 of the drill bit at least there are two, and at least there are two dise knife 21 be arranged
In in the same fixing wing 4 or in same water channel slot 12.As shown in Figure 14,15, two dise knifes 21 are set to same water channel slot 12
In, and formed and be rotatablely connected with adjacent two fixing wing 4 of front and back.Equally, a dise knife can be set in knife in two dise knife 21
On the wing 4, and in the water channel slot 12 before separately having a dise knife 21 to be set to the wing, also, the cutting of wherein at least one dise knife is single
First 2 two sides are supported on respectively on the supporting mass, and are formed and be rotatablely connected with supporting mass.Alternatively, described on the drill bit
Dise knife cutting unit 2 at least there are two, and radial position of at least two dise knife cutting units 2 on drill bit be not identical, such as schemes
12, shown in 14,15,20,21.As further selection, the diameter of different two dise knifes 21 of radial position not phase on drill bit
Deng as shown in figure 12.
Alternatively, the dise knife cutting unit 2 is set between two adjacent fixing wings 4, and at least one of which knife
It is mutually indepedent between the wing 4 and other wings, it is not connected with each other, as shown in Figure 13,14,20,21.
Alternatively.The offset angular region of the dise knife is 60 °≤| α |≤90 °, as shown in Fig. 6,7,8.
Alternatively, in the dise knife cutting unit 2 of the drill bit, at least one dise knife 21 setting there are two types of or two kinds
Above cutting element, and one of tooth is PDC tooth.As shown in Figure 20,21, the cutting element 22 being arranged on dise knife 21 is
PDC tooth 221 and conical tooth 222.
Alternatively, on drill bit the dise knife unit 2 at least there are two, and may be provided with 1 to 6 on one of dise knife 21
Enclose cutting element.As shown in Figure 21,22,23, there are two gear rings for setting on the dise knife 21.The disk of the dise knife cutting unit 2
Knife cutting element 22 can be the combination of a variety of cutting elements, as shown in Figure 17,19,20,21,22,23,25,26.Institute on drill bit
State the PDC tooth 221 that different-diameter size is disposed on the dise knife 21 of at least one in dise knife cutting unit 2, as Figure 17,19,
Shown in 25.
Alternatively, at least one has 1 to 6 dise knife 21 for enclosing cutting element, respectively circle cutting on dise knife 21 on drill bit
Element is to scrape cutting 221, alternatively, respectively enclosing cutting element part on dise knife is to scrape cutting 221, while there are also part end compression teeth
222, as shown in Figure 21,22,23,24.Alternatively, on drill bit the dise knife unit 2 at least there are two, and one of dise knife
It may be provided with 1 to 6 circle cutting element on 21.As shown in Figure 21,22,23, there are two gear rings for setting on the dise knife 21.The disk
The dise knife cutting element 22 of knife cutting unit 2 can be the combination of a variety of cutting elements, as Figure 17,19,20,21,22,23,25,
Shown in 26.
Alternatively, at least one dise knife with impregnated element on drill bit, and cut in dise knife cutting element with wing
Cut the collectively covering in region of element, the cutting element in fixing wing 41 includes PDC tooth and/or impregnated element, as Figure 41,
42,43,44.Wing cutting element 43 is impregnated body 433 on the wing 4 of the drill bit.Impregnated body 433 is existed with the sintering of wing 4
Together, a part of wing 4 has been effectively formed, as shown in figure 40, the wing cutting element 43 on wing 41 is impregnated body
433, dise knife cutting element 22 can be PDC tooth 221, or impregnated body 223, as shown in figure 44；Likewise, on dise knife 21
Dise knife cutting element 22 can also be impregnated sleeping tooth 224, as shown in figure 41；Dise knife cutting element 22 on dise knife 21 can also be
Impregnated perpendicular tooth 225, as shown in figure 42；The cross sectional shape of dise knife 21 can be waveform, as shown in figure 43.
Alternatively, the dise knife cutting element 22 and wing in the region other than the radial one third of the drill bit cut member
Part 43 is impregnated cutting element 223（433）, as shown in Figure 53,54.Certainly, in drill bit radial direction one third with inner region
Dise knife cutting unit 22 and fixed cutting unit 43 can be a variety of cutting elements.As shown in figure 53, drill bit radial three/
One with inner region wing cutting element 43 be PDC tooth 431；As shown in figure 54, in drill bit radial direction one third with inner region wing
The impregnated body 433 of cutting element 43.
Alternatively, the drill bit collectively covers region in the part of dise knife cutting element 22 and wing cutting element 43
Interior, the cutting contour line 72 of the dise knife is not less than the cutting contour line 71 of fixing wing.As shown in Figure 18,19.
Alternatively, the drill bit collectively covers region in the part of dise knife cutting element 22 and wing cutting element 43
Interior, the cutting contour line 72 of the dise knife is not higher than the cutting contour line 71 of fixing wing.As shown in Figure 16,17.Dise knife is cut
The effect of cutting the cutting contour line that contour line is not higher than stationary cutting structure, several aspects can be played.First, work as dise knife
When the cutting profile of cutting unit is slightly below the cutting profile of stationary cutting structure, drill bit works first in shaft bottom by fixed cutting knot
Structure forms the phacolith of certain altitude in shaft bottom cutting broken rock, then is crushed phacolith by dise knife cutting unit, can effectively improve drill bit
Efficiency of breaking rock lowers comminution energy conssumption；Second, when the cutting profile of dise knife cutting unit is significantly lower than the cutting of wing cutting element
When profile, for drill bit when shaft bottom works, wing cutting element is as the first cutting element（Also referred to as level-one cutting element）With rock
Contact carries out broken rock.Dise knife cutting unit is as standby cutting element（Also referred to as second level cutting element）, when wing cutting element
Hub disk knife cutting unit takes over wing cutting element continuation broken rock to a certain extent for abrasion, and can effectively improve drill bit uses the longevity
Life, at the same can effectively reduce because drill bit cutter set density it is excessively high caused by the ratio of tooth force down the phenomenon that, improve the efficiency of breaking rock of drill bit.
Oil storage hole 13 is set on the supporting mass, oil storage bag 6, lubricating oil or grease adding are installed in oil storage hole and stored up
In oil sac 6, it is connected to and is mounted in the oil storage hole 13 that supporting mass opens up with dise knife bearing bore by oilhole.As shown in Figure 36,37.
Alternatively, the dise knife axis 23 of dise knife cutting unit 2 is fixedly connected with dise knife 21（Dise knife 21 and dise knife axis 23 can be with
It is fixedly connected by modes such as key 25, splines, as shown in figure 32.It can also be by dise knife 21 and dise knife axis 23 as one, when adopting
When with integral type, dise knife axis 23 is connect with supporting mass in such a way that welding generates weld seam 10, as shown in Figure 30,31.）, disk
23 both ends of cutter shaft and supporting mass, which are formed, to be rotatablely connected, as shown in Figure 30,31, 32.Alternatively, the dise knife of dise knife cutting unit 2
Axis 23 and dise knife 21 are rotatablely connected, and 23 both ends of dise knife axis and supporting mass are by key 25 or spline, as shown in figure 34.Equally, dise knife
Axis can be fixedly connected with supporting mass both ends by modes such as pin, screw, interference fits.In the embodiment, supporting mass is only needed
Can be realized and dise knife is pivotally supported, limits and avoids displacement, in the connection type rolling bearing be located at dise knife and dise knife axis it
Between, be conducive to the processing of bearing, being located at the anufacturability between supporting mass and dise knife axis compared with bearing will get well.Alternatively, disk
The dise knife axis 23 and dise knife 21 of knife cutting unit 2 are rotatablely connected, and 23 both ends of dise knife axis and supporting mass are formed and be rotatablely connected, such as Figure 35
It is shown.In above scheme, there is rolling bearing in the connection type between dise knife and dise knife axis, between dise knife axis both ends and supporting mass
Also there is rolling bearing, dise knife is dise knife branch opposite with dise knife axis with respect to the rotation speed of dise knife axis with respect to the rotation speed of supporting mass
The sum of body relative rotational is held, the program is conducive to reduce between dise knife and dise knife axis between bearing and dise knife axis and supporting mass
The relative rotation speed of bearing is conducive to the abrasion for slowing down bearing, extends bearing service life.
Alternatively, be the radial motion that can effectively prevent dise knife axis 23, the end face of dise knife axis 23 be provided with baffle or
Plug 14, and weld seam 10 is formed by welding and is fixed in the axis hole of supporting mass, as shown in Figure 14,16,17,18.
Alternatively, be provided on drill bit at least two diameters and radial position it is identical or essentially identical dise knife cutting it is single
Member 2, the cutting contour line 72 of two dise knifes 21 matches or coincide substantially, and the offset angle of two dise knifes 21 is unequal, i.e. and α 1 ≠
α2.As shown in Figure 8.
Alternatively, it is provided at least two diameters and the identical or essentially identical dise knife 21 of radial position on drill bit, two
The offset angle of dise knife is contrary, as shown in figure 45.
Alternatively, wing cutting element 43 and/or dise knife cutting element 22 are rotary cutting tooth 226（436）.Such as Figure 38
Shown, rotary teeth 226 is mainly made of toothholder 2261 and cutting part 2262, includes diamond layer on cutting part 2262
2263, cutting part 2262 can rotate relative to toothholder 2261.Figure 39 is the dise knife cutting element 22 on dise knife 21
For rotary teeth 226.Likewise, wing cutting element 43 or rotary teeth 436 on wing 4.
Alternatively, the dise knife cutting of different-diameter size is disposed on the dise knife of at least one dise knife cutting unit
Tooth, as shown in Figure 25,26.The cutting tooth of different-diameter size is arranged on same dise knife, and being on the one hand conducive to, which enhances dise knife, cuts
Unit is cut to the adaptability of formation rock（The lesser cutting tooth of the usual high appropriate to the occasion selection diameter of formation hardness, when formation hardness is low
Preferably select the cutting tooth being relatively large in diameter）, on the other hand convenient for realization primary cutting structures and standby cutting structure on same dise knife
（The big tooth of diameter is as main cutting tooth, and the small tooth of diameter is as standby cutting tooth）Setting.
Alternatively, dise knife cutting element can change into be additionally provided on drill bit and be rotatablely connected with bit body and roll in shaft bottom
The gear wheel of pressure or impact crushing broken rock（Anti- dress gear wheel outside including small end, big end is inside）, and/or sliding opposite with bit body
The movement cutting structure element such as formed punch, impactor for being disposed with impact cutting tooth be arranged in bit body.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of combined cut diamond bit, including bit body, the fixing cutter for extending from bit body or being fixedly connected with bit body
The wing, dise knife, water channel slot, hydrophthalmia or nozzle between fixing wing are provided with wing cutting element in the fixing wing, described
On bit body at least one by the dise knife with thereon dise knife cutting tooth and the dise knife cutting unit that is constituted of dise knife axis, disk
Knife is mounted on dise knife axis, or is integrated with dise knife axis, and the offset angular region of the dise knife is 20 °≤| α |≤90 °, feature
It is：At least one dise knife is set in the water channel slot in a fixing wing or between two fixing wings, and the dise knife is cut
The two sides for cutting unit are supported on supporting mass respectively, and are formed and be rotatablely connected with supporting mass.
2. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：At least there are also another dise knifes
It is supported in a fixing wing or in the appendage of a wing or on a separate support body completely.
3. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：The dise knife cutting unit is at least
There are two, and at least there are two dise knife be set in the same fixing wing or same water channel slot in or in which a dise knife set
It is placed on wing, and another dise knife is arranged in the water channel slot before the wing, also, wherein at least one dise knife cutting unit
Two sides be supported on supporting mass respectively, and with supporting mass formed be rotatablely connected.
4. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：The offset angular region of the dise knife
Be 60 °≤| α |≤90 °.
5. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：At least one has on drill bit
The dise knife of at least two cutting elements, one of cutting element are PDC tooth.
6. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：At least one has on drill bit
1 to 6 encloses the dise knife of cutting element, and respectively enclosing cutting element on dise knife is to scrape cutting, alternatively, respectively enclosing cutting element part on dise knife
To scrape cutting, while there are also part end compression teeth.
7. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：At least one has on drill bit
The dise knife of impregnated element, and collectively covering in region in dise knife cutting element and wing cutting element, cutting in fixing wing
Cutting element includes PDC tooth and/or impregnated element.
8. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：It is arranged in drill bit one third half
The dise knife cutting element of radial zone and wing cutting element are impregnated element other than diameter.
9. a kind of combined cut diamond bit as described in each item of claim 1 to 6, it is characterised in that：At least cut in dise knife
The part for cutting element and wing cutting element collectively covers in region, and the cutting contour line of the dise knife is not less than fixing wing
Cut contour line.
10. a kind of combined cut diamond bit as described in claim 1, it is characterised in that：In bearing dise knife cutting unit
The supporting mass on oil storage hole is set, oil storage bag is installed in oil storage hole, lubricating oil or grease adding in oil storage bag, lead to
Oil-through hole is connected to dise knife bearing bore.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017103348458 | 2017-05-12 | ||
| CN201710334845 | 2017-05-12 | ||
| CN201720528037 | 2017-05-12 | ||
| CN2017205280370 | 2017-05-12 |
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| CN108868625A true CN108868625A (en) | 2018-11-23 |
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|---|---|---|---|
| CN201710819577.9A Pending CN108868625A (en) | 2017-05-12 | 2017-09-13 | A kind of combined cut diamond bit |
| CN201721166050.2U Active CN207553972U (en) | 2017-05-12 | 2017-09-13 | A kind of combined cut diamond bit |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721166050.2U Active CN207553972U (en) | 2017-05-12 | 2017-09-13 | A kind of combined cut diamond bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115538946A (en) * | 2022-12-05 | 2022-12-30 | 西南石油大学 | Roller cone type composite PDC drill bit |
| CN116816272A (en) * | 2023-08-28 | 2023-09-29 | 西南石油大学 | PDC drill bit with disc cutter and rotary teeth |
| US12065883B2 (en) | 2020-09-29 | 2024-08-20 | Schlumberger Technology Corporation | Hybrid bit |
| US12084919B2 (en) | 2019-05-21 | 2024-09-10 | Schlumberger Technology Corporation | Hybrid bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868625A (en) * | 2017-05-12 | 2018-11-23 | 西南石油大学 | A kind of combined cut diamond bit |
| CN109026009B (en) * | 2018-10-17 | 2023-11-21 | 中南大学 | Mining head for cobalt-rich crust of submarine mineral resources |
| CN109681122A (en) * | 2019-03-03 | 2019-04-26 | 兰州城市学院 | A kind of two rank step scraper |
| CN112324344B (en) * | 2020-12-04 | 2023-04-07 | 中国石油天然气集团有限公司 | Mixed drill bit for plowing, cutting and grinding composite rock breaking |
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| CN203201475U (en) * | 2013-02-07 | 2013-09-18 | 杨立源 | Drill provided with rotating disc cutters on cutter wings |
| CN203201476U (en) * | 2013-02-07 | 2013-09-18 | 杨立源 | Combined drill provided with disc cutter cutting structures on cutter wings |
| CN103089154A (en) * | 2013-02-28 | 2013-05-08 | 西南石油大学 | Composite drill bit |
| CN105275403A (en) * | 2014-07-01 | 2016-01-27 | 中国石油化工集团公司 | A plowing type PDC drill bit suitable for hard formations |
| CN105840105A (en) * | 2016-06-15 | 2016-08-10 | 吉林大学 | PDC (Polycrystalline diamond compact)-impregnated segment hybrid self-adaptive drill bit |
| CN106014266A (en) * | 2016-08-02 | 2016-10-12 | 西南石油大学 | Disc cutter type multiple drill bit suitable for hard-to-drill stratum |
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| CN207553972U (en) * | 2017-05-12 | 2018-06-29 | 西南石油大学 | A kind of combined cut diamond bit |
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| US12084919B2 (en) | 2019-05-21 | 2024-09-10 | Schlumberger Technology Corporation | Hybrid bit |
| US12065883B2 (en) | 2020-09-29 | 2024-08-20 | Schlumberger Technology Corporation | Hybrid bit |
| CN115538946A (en) * | 2022-12-05 | 2022-12-30 | 西南石油大学 | Roller cone type composite PDC drill bit |
| CN115538946B (en) * | 2022-12-05 | 2023-01-31 | 西南石油大学 | Roller cone type composite PDC drill bit |
| CN116816272A (en) * | 2023-08-28 | 2023-09-29 | 西南石油大学 | PDC drill bit with disc cutter and rotary teeth |
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| CN207553972U (en) | 2018-06-29 |
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Application publication date: 20181123 |