CN106050147A - Wide-top reinforced tooth - Google Patents
Wide-top reinforced tooth Download PDFInfo
- Publication number
- CN106050147A CN106050147A CN201610575587.8A CN201610575587A CN106050147A CN 106050147 A CN106050147 A CN 106050147A CN 201610575587 A CN201610575587 A CN 201610575587A CN 106050147 A CN106050147 A CN 106050147A
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- China
- Prior art keywords
- tooth
- strengthened
- crown
- wide
- wide top
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- 239000011435 rock Substances 0.000 claims abstract description 41
- 230000002787 reinforcement Effects 0.000 claims description 37
- 239000002131 composite material Substances 0.000 claims description 17
- 229910003460 diamond Inorganic materials 0.000 claims description 17
- 239000010432 diamond Substances 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000007704 transition Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000000254 damaging effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000000332 tooth crown Anatomy 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001504664 Crossocheilus latius Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002023 wood Substances 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
- E21B10/08—Roller bits
- E21B10/16—Roller bits characterised by tooth form or arrangement
-
- 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
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
- E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
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)
- Gears, Cams (AREA)
Abstract
The invention relates to a tooth for a cone-inlaid drill, a drill having a cone structure, or a rock-breaking tool having a cone structure in the oil drilling and geological drilling fields, so that the strength of the existing wide tooth can be enhanced effectively. According to a technical scheme, a wide-top reinforced tooth comprises a tooth post and a crown in a flat wedge shape; and ranges of oblique angles alpha 1 and alpha 2 of the crown at the two sides in a tooth width direction are as follows: alpha 1 is larger than or equal to 0 degree and is less than or equal to 10 degrees, and the alpha 2 is is larger than or equal to 0 degree and is less than or equal to 10 degrees. A reinforced rib is arranged at the crown in a tooth thickness direction. The tooth has characteristics of large tooth edge width, high strength, and high toughness; and the damage effect area of the downhole rock by the tooth can be increased and thus the rack-breaking efficiency of the drill is improved.
Description
Technical field
The present invention relates to a kind of for oil, geological drilling insert bit or the drill bit with cone structure or broken rock
The tooth of instrument.
Background technology
The structure of drill teeth is one of key factor affecting drill bit drilling efficiency.In the prior art, insert cone
Drill bit and the tooth flute profile (or " profile of tooth ") having the drill bit of cone structure conventional have scoop chisel insert, chisel teeth, blunt conical-ended shape insert, hemi-spherical ended shape insert
Deng.For different geological conditions, the tooth (also can claim to cut tooth) of not isodont should be used, stratum be fitted improving drill bit
Ying Xing.
In prior art, under the tooth on insert bit or the drill bit with cone structure or rock crushing tool
Portion's tooth post part is cylindrical, and top crown part is gradually tapered up transition by lower cylindrical to tooth axis, mostly is wedge shape or cone
Shape, the addendum width of tooth is all significantly less than the diameter of lower teeth post part, to form more sharp-pointed impact head.Rifler
With impact crushing mode fractured rock, i.e. tooth by the impact of rock, extruding with scrape to cut with a small amount of sliding and crush
Rock, its shortcoming is that capacity usage ratio is the highest, and efficiency of breaking rock is relatively low, and during bit operation, bearing impact is big, dynamic
Load coefficient is big.
Creeping into for hard formation, those skilled in the art propose a kind of big horizontal tooth of having a denture made of width hard alloy (with reference to specially
Profit: a kind of disc type insert bit, number of patent application: CN201310063619.2).The land width of this tooth is big, land
Sharply being prone to invade rock, by its horizontal insert to the gear wheel of drill bit, tooth will act in the way of rolling compaction, splitting
Bottom rock, to crush, to cleave brokenly rock in the way of static pressure, the dynamic load that tooth is subject to is little, is particularly suitable for hard short ground
Creep into.But its intensity is relatively low, broken teeth, broken tooth phenomenon easily occur during work.
Summary of the invention
The invention aims to be effectively improved the intensity of existing wider tooth, it is provided that tooth is strengthened on a kind of wide top, this
Tooth has land width big intensity advantages of higher.
In order to achieve the above object, the present invention is by the following technical solutions: tooth is strengthened, including tooth post and tooth in a kind of wide top
Hat, it is characterised in that: described crown is flat wedge shape, and crown is at the bevel angle α of the both sides in facewidth direction1And α2Scope be 0 °≤α1
≤ 10 °, 0 °≤α2≤ 10 °, and crown is provided with reinforcement at least one side in transverse tooth thickness direction.
Major parameter tooth depth H dentulous of this patent tooth, hypsodonty h, tooth post height h ', reinforcement top are away from tooth
The height h on top1, tooth is at the knuckle radius R of the tooth top profile line in transverse tooth thickness direction and the crown bevel angle α in the both sides in facewidth direction1
And α2(with reference to shown in Fig. 1, Fig. 2).
Tooth depth H of tooth refers to that the total height of tooth, hypsodonty h refer to that the height of tooth bizet, tooth post height h ' are
Refer to the height of tooth tooth post, wherein H=h '+h.The facewidth of tooth refers to that the tooth top region of tooth is being perpendicular to the flat of tooth axis
Maximum transverse size in face, the transverse tooth thickness of tooth refers to that tooth tooth top region is in the maximum transversal being perpendicular on tooth width direction
Size.Tooth is at the knuckle radius R of the tooth top profile line in transverse tooth thickness direction and the crown bevel angle α in the both sides in facewidth direction1And α2It is
Characterize two important parameters of tooth lateral dimension.The knuckle radius R of the tooth top profile line of tooth is the least, and the thickness of tooth is more
Little；The bevel angle α of tooth both sides1And α2The least, the width of tooth is the biggest.Tooth width is the biggest and thickness is the least, and tooth is the sharpest,
The easiest wedging rock, but the most more it is susceptible to Strength Failure.
The crown position line referred to the tooth central point at the tooth top profile line in transverse tooth thickness direction and the line along tooth depth direction.Tooth
The centrage of the cross section of post referred to the geometric center of the cross section of tooth post and along the line in tooth depth direction.For axial symmetry or rotation
Turning the tooth post of symmetrical structure, the centrage of the cross section of tooth post is i.e. the central axis of tooth post.
Tooth top deflection angle refers to that addendum line (is parallel to the addendum width direction of tooth, by tooth top peak or highest region
The center in territory, and the straight line perpendicular with tooth axis) with the angle g (as shown in Figure 3) of the wheel cone nut line of tooth place gear wheel,
Refer generally to addendum line and take turns acute angle or right angle formed by cone nut line.In this specification specify: from tooth top along tooth axis direction to
Cone body is seen, for just to deflect when addendum line deflects counterclockwise relative to the wheel cone nut line of gear wheel, otherwise then turns for negative bias.Existing mostly
The tooth top zero deflection (i.e. tooth top deflection angle g is 0 °) of the tooth on number cone bit cone, or have the part gear ring of a small amount of drill bit
Tooth tooth top have deflection, deflection angle g is typically within 50 °.When deflection angle g range is in 70 °≤| g |≤90 °, wide top adds
Strong tooth is horizontal tooth of having a denture made, when the wide wide top reinforcement tooth pushing up reinforcement tooth and non-horizontal edge of horizontal edge is positioned on same gear wheel, and two kinds
Tooth is strengthened on the wide top of mosaic mode will each play different rock breaking mechanism effects, and two kinds of differences break the collaborative work of rock mode
With.Composite drill bit shown in Fig. 4 and the tricone bit shown in Fig. 5 all use this patent one width top to strengthen tooth with deflection angle g
The horizontal insert of mode of=90 ° is on the gear wheel of drill bit.
Compared with prior art, it provides the benefit that the present invention:
1, the crown of tooth is strengthened on this patent width top is flat wedge shape, and crown has bevel angle α respectively in the both sides in facewidth direction1And α2,
Wherein angle range is 0 °≤α1≤ 10 °, 0 °≤α2≤ 10 °, the land width of tooth is big, contributes to increasing tooth to shaft bottom rock
The damaging action region of stone, and then improve the efficiency of breaking rock of drill bit；And the crown of tooth is at least one side in transverse tooth thickness direction
Being provided with reinforcement, the widest top is strengthened tooth and is had the advantage that intensity is high, be not easily broken.And arranging of reinforcement will significantly improve
The wearability of tooth.
2, tooth crown is provided with reinforcement in the side in transverse tooth thickness direction, improves the intensity of land part, and tooth bears punching
The ability hitting load further enhances, and has stronger anti-broken teeth ability, and the service life of tooth and drill bit is long.
3, behind tooth wedging stratum, the existence of reinforcement can produce squeezing action to flank rock, promotes rock interior micro-
The generation of crackle and extension, produce expansionary effect, makes rock surface be easier to burst apart broken.
4, tooth land width is big, then to scrape area inswept when cutting relatively big for tooth, scrapes and cuts through the effect of rock and become apparent from.
5, tooth of the present invention can be inserted, therefore may select hardness and wearability preferably hard alloy tooth, cube carbon
Change boron tooth, pottery tooth, diamond composite teeth, polycrystal diamond composite teeth, or doing surface with diamond or antifriction alloy strengthens
Hard-metal insert, impregnated diamond tooth etc..The wearability of these teeth and hardness etc. are bored obviously higher than conventional milling tooth roller
The cutting tooth of head, the cutting tooth life-span of the present invention and bit life will significantly improve.The program makes it have in broken rock mode
While clear superiority, be conducive to further hard, extremely hard, abrasive layer and deep-well, slim-hole are crept into.
6, the horizontal insert of this patent tooth composite drill bit that to insert bit or there is cone structure or broken rock are used
Time on instrument, gear wheel is greatly reduced with the interdental interval of horizontal edge adjacent on gear ring, reduces the discontinuity of gear ring.For
For each horizontal tooth of having a denture made, and the associating of the most horizontal multiple tooth of having a denture made, its mode of operation in shaft bottom is the stone roller of approximation pure rolling
Pressure, splitting, utilize horizontal tooth of having a denture made that big contact stress and the extruding of rock are come fractured rock, i.e. by pressure in the way of static pressure
Grind, rock is broken in splitting, can be obviously improved force-bearing situation and the abrasion of tooth, improves the life-span of tooth, is particularly suitable in abrasiveness
Strong hard formation creeps into.
As selection, the described tooth tooth top profile line in facewidth direction is linear, circular arc or waveform.
In such scheme, rectilinear tooth top profile line is conducive to width top to strengthen tooth wedging rock.The tooth top wheel of circular arc
Profile make wide top strengthen tooth insert to gear wheel after, the tooth top profile of gear ring closer to circle, beneficially gear ring tooth with
Rolling compaction, the mode fractured rock of splitting.Corrugated tooth top profile line can make tooth connect the bigger local of rock generation
Touch stress, and then make rock be easier to burst apart broken, improve efficiency of breaking rock.When tooth top profile line is waveform, wave
Shape can be formed by straightway and circular sliding slopes, it is also possible to is connected by multi-section circular arc and is formed.
As selection, described tooth is at the knuckle radius R≤1.5mm of the tooth top profile line in transverse tooth thickness direction.
In such scheme, tooth is little at the knuckle radius of the tooth top profile line in transverse tooth thickness direction, and transverse tooth thickness is relatively thin, and land is sharp-pointed,
Tooth is made to be prone to invade rock.
As selection, the height of described reinforcement top tooth top apart is less than or equal to the half of hypsodonty.
As preferably, described reinforcement top flushes with tooth top.
In such scheme, the height of the reinforcement top of tooth tooth top apart is less than or equal to the half of hypsodonty, ability
It is effectively improved wide top and strengthens the intensity of tooth.
As selection, the length and width of the transverse section of described tooth post is unequal.As preferably, the cross section of described tooth post
For ellipse.
In such scheme, the transverse section of described tooth post is oval, be conducive to width top strengthen tooth tooth post machine-shaping and
The processing of corresponding perforation on gear wheel, oval perforation also allows for realizing modern digital machining, processes workable.Meanwhile,
When the length of tooth post increases, the facewidth of tooth can strengthen further, contributes to increasing the tooth damaging action district to rock
Territory.
As selection, the transverse section of described tooth post is oval, and the tooth top profile line that tooth is in facewidth direction is wave
Shape.
In such scheme, the transverse section of tooth post is oval so that the facewidth of tooth can strengthen further；Wave simultaneously
The tooth top profile line of shape can improve local stress when tooth and rock interaction so that rock is more prone to burst apart broken.
As selection, the crown position line of described tooth is misaligned with the centrage of the cross section of tooth post.
In such scheme, by the region in rule footpath close on tooth insert to gear wheel, the flank of tooth will produce with rock of borehole
Raw interaction, the crown position line of tooth offsets with the centrage of the cross section of tooth post, can improve the wearability of tooth flank.
As selection, described tooth is used for insert bit or has drill bit or the rock crushing tool of cone structure.
As selection, the deflection of described tooth is installed on the gear wheel of drill bit, the scope of deflection angle g: 0 °≤| g |≤20 ° or
70°≤|g|≤90°。
In such scheme, owing to the width of tooth is strengthened greatly in width top, when tooth is with the deflection angle insert of 0 °≤| g |≤20 °
Time on gear wheel, it is relatively big that tooth scrapes area inswept when cutting, and scrapes and cuts through the effect of rock and become apparent from.When tooth with 70 °≤| g |≤
The deflection angle insert of 90 ° is to time on gear wheel, and gear wheel is greatly reduced with the interdental interval of horizontal edge adjacent on gear ring, reduces
The discontinuity of gear ring, tooth, to crush in the way of static pressure, to cleave brokenly rock, can be obviously improved force-bearing situation and the mill of tooth
Damage, improve the life-span of tooth, be particularly suitable for the hard formation abrasiveness is strong and creep into.
As selection, described tooth is hard alloy tooth, cubic boron tooth, pottery tooth, diamond composite teeth, glomerocryst
Diamond composite teeth, or tooth top region or even crown surface polycrystalline diamond or antifriction alloy do the composite that surface is strengthened
Tooth etc..
In such scheme, tooth uses hardness and wearability preferably hard-metal insert, or tooth top region or even crown table
Face polycrystalline diamond does the composite material teeth that surface is strengthened, and can significantly improve the service life of tooth.
As preferably, the top of the reinforcement of tooth is tangent with the crown profile of tooth or close to tangent transition, reinforcement
Both sides and tooth are with the round-corner transition of relatively large radius, and all of seamed edge is strengthened on tooth all with the fillet mistake of small radii in wide top
Cross.
In such scheme, all of seamed edge is strengthened on tooth all with round-corner transition in wide top, it is to avoid the stress on tooth is concentrated,
Intensity and the service life of tooth can be effectively improved.
In aforesaid all schemes, aforementioned main formula case of the present invention and each further selection scheme thereof can be with independent assortment with shapes
Become multiple scheme, be the present invention and can use and claimed scheme；And the present invention each non conflicting select between and
Select can in any combination with other, and those skilled in the art are understanding after the present invention program according to prior art and common knowledge
Can understand there is multiple combination, be the claimed technical scheme of the present invention, do not do at this exhaustive.
Accompanying drawing explanation
Fig. 1 is that the tooth structural representation in facewidth direction is strengthened on a kind of wide top of the present invention, tooth depth H, tooth to tooth in figure
Crown height degree h, tooth post height h ', the crown bevel angle α in the both sides in facewidth direction of tooth1And α2It is illustrated.
Fig. 2 is that the tooth structural representation in transverse tooth thickness direction is strengthened, to tooth in transverse tooth thickness direction in figure in a kind of wide top of the present invention
The knuckle radius R of tooth top profile line be illustrated.
Fig. 3 is that the tooth top of tooth of the present invention deflects the signal being installed on gear wheel with relatively small deflection angle (0 °≤| g |≤20 °)
Figure.
Fig. 4 is to use width top of the present invention to strengthen tooth to deflect the structural representation being installed on the gear wheel of composite drill bit (wherein
Deflection angle g=90 °).
Fig. 5 is to use width top of the present invention to strengthen tooth to deflect structural representation (its being installed on the gear wheel of tricone bit
Middle deflection angle g=90 °).
Fig. 6 is that to strengthen the tooth top of the tooth contour line in transverse tooth thickness direction be circular arc on the present invention a kind of wide top, and arc radius R
The structural representation of=0.5mm.
Fig. 7 is that to strengthen the tooth top of the tooth contour line in transverse tooth thickness direction be circular arc on the present invention a kind of wide top, and arc radius R
The structural representation of=1.5mm.
Fig. 8 is that to strengthen the tooth top of the tooth contour line in transverse tooth thickness direction be rectilinear schematic diagram on the present invention a kind of wide top.
Fig. 9 is that the structural representation that contour line is circular arc in facewidth direction of the tooth top of tooth is strengthened on a kind of wide top of the present invention
Figure.
Figure 10 is that the tooth top of the tooth contour line in facewidth direction is strengthened for be connected shape by multi-section circular arc in a kind of wide top of the present invention
The corrugated structural representation become.
Figure 11 is that the tooth top of the tooth contour line in facewidth direction is strengthened for by straightway with circular arc even in a kind of wide top of the present invention
Connect the corrugated structural representation of formation.
Figure 12 is the height h that tooth tooth top is strengthened on the widest top, reinforcement top that tooth is strengthened on a kind of wide top of the present invention1For tooth
The schematic diagram of 1/4th of crown height degree h.
Figure 13 is the schematic diagram that transverse section is ellipse of the tooth post that tooth is strengthened on a kind of wide top of the present invention.
Figure 14 is the sectional view of tooth post in Figure 13.
Figure 15 be the transverse section of the tooth post that tooth is strengthened on a kind of wide top of the present invention be ellipse, and tooth is at the tooth in facewidth direction
Top contour line is corrugated structural representation.
Figure 16 is the top view schematic diagram of Figure 15.
Figure 17 be the crown two side reinforcement quantity in transverse tooth thickness direction that tooth is strengthened on a kind of wide top of the present invention equal and
Structural representation time symmetrically placed.
Figure 18 be the crown two side reinforcement quantity in transverse tooth thickness direction that tooth is strengthened on a kind of wide top of the present invention equal but
Between misplaced structural representation when putting.
Figure 20 and Figure 19 is that the tooth crown two side reinforcement quantity in transverse tooth thickness direction are strengthened not in a kind of wide top of the present invention
Equal structural representation.
Figure 21 is that the centrage that the crown position line of tooth and the cross section of tooth post are strengthened in a kind of wide top of the present invention is misaligned
Schematic diagram.
Figure 22 is the longitudinal sectional view that tooth is strengthened on a kind of wide top of the present invention, and tooth described in figure is that tooth top region surface is with poly-
Diamond or antifriction alloy do the composite material teeth that surface is strengthened.
Figure 23 is the longitudinal sectional view that tooth is strengthened on a kind of wide top of the present invention, and tooth described in figure is crown surface glomerocryst gold
Hard rock or antifriction alloy do the composite material teeth that surface is strengthened.
In figure: 1. tooth post, 2. crown, 3. reinforcement, 4. the crown position line, the 5. centrage of the cross section of tooth post, 6. poly-
Diamond or antifriction alloy.
Detailed description of the invention
Following non-limiting examples is used for the present invention is described.
Embodiment 1:
Tooth is strengthened on a kind of wide top, and including tooth post 1 and crown 2, described crown 2 is in flat wedge shape, and crown 2 is the two of facewidth direction
The bevel angle α of side1And α2Scope be 0 °≤α1≤ 10 °, 0 °≤α2≤ 10 °, and crown 2 is at least one side in transverse tooth thickness direction
It is provided with reinforcement 3 (with reference to shown in Fig. 1, Fig. 2).As selection, crown 2 is equal (i.e. α at the oblique angle of the both sides in facewidth direction1=
α2).As preferably, it is symmetrically placed that crown 2 is respectively provided with the relative crown 2 of a reinforcement 3 in two sides in transverse tooth thickness direction.As
Selecting, the tooth top of the tooth contour line in transverse tooth thickness direction is linear (with reference to shown in Fig. 8).As selection, the tooth top of tooth exists
The contour line in facewidth direction is linear, circular arc (with reference to shown in Fig. 9) or waveform, and wherein waveform can be by multi-section circular arc
Connect and form (with reference to shown in Figure 10) or straightway and circular sliding slopes formation (with reference to shown in Figure 11).As selection, the horizontal stroke of tooth post 1
Section is circular.As selection, described tooth can be hard alloy tooth, cubic boron tooth, pottery tooth, and diamond is combined
Tooth or polycrystal diamond composite teeth, or tooth top region surface polycrystalline diamond or antifriction alloy 6 do surface strengthen composite wood
Expect tooth (with reference to shown in Figure 22) etc., or crown 2 surface polycrystalline diamond or antifriction alloy 6 do the composite that surface is strengthened
Tooth (with reference to shown in Figure 23).As preferably, the top of the reinforcement 3 of described tooth is tangent with crown 2 profile of tooth or connects
Nearly tangent transition, reinforcement 3 both sides and tooth with the round-corner transition of relatively large radius, and wide top strengthen on tooth all of seamed edge all with
The round-corner transition of small radii.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, and its difference is: the crown 2 of described tooth is in the both sides in facewidth direction
Bevel angle α1And α2Scope be 0 °≤α1≤ 5 °, 0 °≤α2≤5°.As selection, the crown 2 of described tooth is in facewidth direction
The oblique angle of both sides is equal and be 0 ° of (i.e. α1=α2=0 °), with reference to shown in Figure 18.
Embodiment 3:
The present embodiment is substantially the same manner as Example 1, and its difference is: the crown 2 of described tooth is in the both sides in facewidth direction
Unequal (the i.e. α in oblique angle1≠α2), wherein bevel angle α1And α2Scope be 0 °≤α1≤ 5 °, 5 °≤α2≤10°。
Embodiment 4:
The present embodiment is substantially the same manner as Example 1, and its difference is: the tooth top of the tooth profile in transverse tooth thickness direction is strengthened on wide top
Line is circular arc, and tooth top profile line radius R≤1.5mm.With reference to shown in Fig. 6, the knuckle radius R=0.5mm of tooth top profile line.
With reference to shown in Fig. 7, the knuckle radius R=1.5mm of tooth top profile line.
Embodiment 5:
The present embodiment is substantially the same manner as Example 1, and its difference is: tooth tooth top is strengthened at a distance of wide top in reinforcement 3 top
Highly h1Half less than or equal to hypsodonty h.With reference to shown in Figure 12, wide top is strengthened reinforcement 3 top of tooth and is added at a distance of wide top
The height h of strong tooth tooth top1For hypsodonty h 1/4th.As preferably, it is neat that tooth tooth top is strengthened on reinforcement 3 top and wide top
Flat (i.e. h1=0).
Embodiment 6:
The present embodiment is substantially the same manner as Example 1, and its difference is: the length and width of the transverse section of tooth post 1 is unequal.
As preferably, the transverse section of described tooth post 1 is oval, with reference to Figure 13, shown in 14.
Embodiment 7:
The present embodiment is substantially the same manner as Example 1, and its difference is: the transverse section of described tooth post 1 is ellipse, and tooth
Tooth top profile line in facewidth direction is waveform, with reference to shown in Figure 15, Figure 16.
Embodiment 8:
The present embodiment is substantially the same manner as Example 1, and its difference is: described crown 2 is equal in two sides in transverse tooth thickness direction
It being provided with reinforcement 3, the quantity of the reinforcement 3 of two of which side is equal and equal >=and 2.As selection, reinforcement 3 is symmetrically placed,
With reference to shown in Figure 17.As selection, wrong layout between reinforcement 3, with reference to shown in Figure 18.
Embodiment 9:
The present embodiment is substantially the same manner as Example 1, and its difference is: described crown 2 is on two sides in transverse tooth thickness direction
Reinforcement 3 quantity unequal.With reference to shown in Figure 19, crown 2 is provided with reinforcement 3 in a side in transverse tooth thickness direction, another
Side does not has reinforcement 3.With reference to shown in Figure 20, crown 2 all has reinforcement 3 but quantity not phase on two sides in transverse tooth thickness direction
Deng.
Embodiment 10:
The present embodiment is substantially the same manner as Example 1, and its difference is: the crown position line 4 and the tooth post 1 of tooth is strengthened on wide top
The centrage 5 of cross section is misaligned, with reference to shown in Figure 21.
Embodiment 11:
The present embodiment is substantially the same manner as Example 1, and its difference is: tooth is strengthened with certain deflection angle g deflection edge in wide top
Install on gear wheel.As selection, deflection angle g of wide top reinforcement tooth is in the range of 0 °≤| g |≤20 °, with reference to shown in Fig. 3.As
Selecting, deflection angle g of tooth is strengthened in the range of 70 °≤| g |≤90 ° in wide top.As preferably, when tooth is strengthened for composite drill in width top
Time on head or the gear wheel of insert bit, tooth by insert horizontal in the way of deflection angle g=90 ° to gear wheel, reference
Fig. 4, shown in 5.As selection, it is different that tooth deflection angle g on same gear wheel is strengthened on wide top.As selection, tooth is strengthened on wide top
For having the rock crushing tool of cone structure.
Embodiment 12:
The present embodiment is substantially the same manner as Example 1, and its difference is: tooth is strengthened on the wide top of different crown 2 shapes can group
Conjunction is arranged on same gear wheel, and deflection angle g of adjacent wide top reinforcement tooth can be different.
It is emphasized that: be the most only presently preferred embodiments of the present invention, not the present invention is made any in form
Restriction, any simple modification that above example is made by every technical spirit according to the present invention, equivalent variations and modification,
All still fall within the range of technical solution of the present invention.
Claims (10)
1. a tooth is strengthened, including tooth post and crown in wide top, it is characterised in that: described crown is flat wedge shape, and crown is in facewidth side
To the bevel angle α of both sides1And α2Scope be 0 °≤α1≤ 10 °, 0 °≤α2≤ 10 °, and crown is at least one of transverse tooth thickness direction
Side is provided with reinforcement.
2. tooth is strengthened on a kind of wide top as described in claim 1, it is characterised in that: described tooth is at the tooth top profile in facewidth direction
Line is linear, circular arc or waveform.
3. tooth is strengthened on a kind of wide top as described in claim 1, it is characterised in that: described tooth is at the tooth top profile in transverse tooth thickness direction
Knuckle radius R≤the 1.5mm of line.
4. tooth is strengthened on a kind of wide top as described in claim 1, it is characterised in that: the described reinforcement top height away from tooth top is little
In the half equal to hypsodonty.
5. tooth is strengthened on a kind of wide top as described in claim 1, it is characterised in that: the length and width of the transverse section of described tooth post
Unequal.
6. tooth is strengthened on a kind of wide top as described in claim 5, it is characterised in that: the transverse section of described tooth post is oval, and
The tooth tooth top profile line in facewidth direction is waveform.
7. tooth is strengthened on a kind of wide top as described in claim 1, it is characterised in that: the crown position line of described tooth and tooth post
The centrage of cross section is misaligned.
8. tooth is strengthened on a kind of wide top as described in claim 1, it is characterised in that: described tooth is used for insert bit or tool
There are drill bit or the rock crushing tool of cone structure.
9. tooth is strengthened on a kind of wide top as described in claim 8, it is characterised in that: the deflection of described tooth is installed in drill bit or broken rock
On the gear wheel of instrument, the scope of deflection angle g: 0 °≤| g |≤20 ° or 70 °≤| g |≤90 °.
10. strengthen tooth by a kind of wide top described in any claim in claim 1 to 9, it is characterised in that: described tooth
For hard alloy tooth, cubic boron tooth, pottery tooth, diamond composite teeth, polycrystal diamond composite teeth, or tooth top region it is
The tooth that surface is strengthened is done to crown surface polycrystalline diamond or antifriction alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610575587.8A CN106050147A (en) | 2016-07-20 | 2016-07-20 | Wide-top reinforced tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610575587.8A CN106050147A (en) | 2016-07-20 | 2016-07-20 | Wide-top reinforced tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106050147A true CN106050147A (en) | 2016-10-26 |
Family
ID=57187334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610575587.8A Pending CN106050147A (en) | 2016-07-20 | 2016-07-20 | Wide-top reinforced tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106050147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441359A (en) * | 2019-01-04 | 2019-03-08 | 西南石油大学 | For the cloth toothing of the impact geophysical prospecting bit of shale |
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| CN103132912A (en) * | 2013-02-28 | 2013-06-05 | 西南石油大学 | Wide insert cone bit |
| CN203394353U (en) * | 2013-07-22 | 2014-01-15 | 深圳市海明润实业有限公司 | Wedge-shaped diamond and hard alloy composite tooth |
| US20140182947A1 (en) * | 2012-12-28 | 2014-07-03 | Smith International, Inc. | Cutting insert for percussion drill bit |
| CN206256883U (en) * | 2016-07-20 | 2017-06-16 | 西南石油大学 | Strengthen tooth in a kind of top wide |
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| SU1298331A1 (en) * | 1985-06-28 | 1987-03-23 | Всесоюзный Научно-Исследовательский Институт Буровой Техники | Rock-breaking tooth of drilling bit |
| CN2677582Y (en) * | 2003-12-24 | 2005-02-09 | 江汉石油钻头股份有限公司 | Convex wedge cutting teeth for roller bit |
| CA2708651A1 (en) * | 2007-12-21 | 2009-07-09 | Baker Hughes Incorporated | Oriented pyramid inserts |
| CN102080504A (en) * | 2009-11-26 | 2011-06-01 | 中冶成工上海五冶建设有限公司 | Rotary drilling tooth |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109441359A (en) * | 2019-01-04 | 2019-03-08 | 西南石油大学 | For the cloth toothing of the impact geophysical prospecting bit of shale |
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Application publication date: 20161026 |