CN105081994B - Terrace emery wheel and its manufacture method - Google Patents
Terrace emery wheel and its manufacture method Download PDFInfo
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- CN105081994B CN105081994B CN201510483943.9A CN201510483943A CN105081994B CN 105081994 B CN105081994 B CN 105081994B CN 201510483943 A CN201510483943 A CN 201510483943A CN 105081994 B CN105081994 B CN 105081994B
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Abstract
The invention discloses a kind of terrace emery wheel and its manufacture method, terrace emery wheel includes：Matrix, and multiple cutter heads, are sintered on the outer peripheral surface of described matrix, and the cutter head has：Front and rear, the anterior top are in wedge angle；The bottom at the rear portion is provided with groove.Cutter head is fixed on matrix by the present invention using hot pressing sintering method.Pass through above-mentioned technical proposal of the present invention realizes quick cutting and ensures the smooth exclusion of chip, solves the problems, such as the removing of floor coatings.
Description
Technical field
The present invention relates to diamond tool field, more particularly to a kind of terrace emery wheel and its manufacture method.
Background technology
With the development of material technology and manufacturing industry technology, various high performance new materials continue to bring out, and this requires cutting
Cutter has high rigidity, heat endurance, chemical inertness and proper toughness, therefore brings to traditional diamond tool huge
Challenge.
There is very strong adhesion between floor coatings and mattess, typically first shearing removes top layer to thick coating, and mixes
The coating thin layer that solidifying soil directly adheres to, then polished and removed using the diamond-impregnated wheel of coarseness；It is clear being polished with diamond-impregnated wheel
During except shallow layer, due to the reason such as heated that rubs, organic coating, which easily softens, to be adhered in diamond disk locking nub, so that clearly
Science and engineering is difficult to.
To solve the problems, such as that floor coatings are difficult to clean off, it is necessary to which exploitation one kind has high rigidity, heat endurance and chemistry
The Novel cutting instrument of the superior performances such as inertia, and when requiring machining, is not likely to produce that built-up-edge, coefficient of friction be small, anti stick
The good, chip of property can be excluded smoothly very much, and work piece surface impulse- free robustness, no marking adapt to modern superhard material without vaporific and chatter mark
The needs of processing.
The content of the invention
In order at least solve the problems, such as that floor coatings are difficult to understand, it is an object of the invention to provide a kind of terrace emery wheel and
Its manufacture method.
To achieve these goals, the present invention uses following technical scheme：
A kind of terrace emery wheel, it includes：Matrix；And multiple cutter heads, the outer ring of described matrix is fixed on by sintering process
On surface, the cutter head has：Front and rear, the anterior top are in wedge angle；The bottom at the rear portion is provided with groove.
In above-mentioned terrace emery wheel, as a preferred embodiment, the outer surface of the cutter head includes：Top surface and by
First knife face, the second knife face, first in face, the first trough wall surface, the second trough wall surface and second face be sequentially connected to be formed it is circumferential
Side；First knife face and the second knife face connect to form the wedge angle；First trough wall surface and the second trough wall surface connect shape
Into the groove.
In above-mentioned terrace emery wheel, as a preferred embodiment, the cutter head is by carcass powder and diamond
Particle shape into, wherein, the carcass powder is made up of following component by weight percentage：Pre-alloyed powder FeCuCoSnTiCr：35
~60%, Ni：3~10%, Cu：20~40%, Sn：3~10%, graphite powder：0.5~5%.
In above-mentioned terrace emery wheel, as a preferred embodiment, in the pre-alloyed powder FeCuCoSnTiCr,
The weight percent content of each element is：Fe：68~70%, Cu：7.5~13%, Co：12.5~13.5%, Sn：6~8%,
TiCr alloys：0.5-1%.
In above-mentioned terrace emery wheel, as a preferred embodiment, being provided with the outer peripheral surface of described matrix more
Individual projection, multiple projections are corresponded in embedded multiple cutter heads, and the cutter head is firmly fixed at into the base
On body；Preferably, the raised height is in more than 1mm.
In above-mentioned terrace emery wheel, as a preferred embodiment, being provided with the outer peripheral surface of described matrix more
Individual pit, the raised bottom are connected with the bottom surface of the pit, and the pit is stretched out on the raised top；Preferably,
The diameter of the pit is in more than 2mm.
In above-mentioned terrace emery wheel, as a preferred embodiment, the projection, which is arranged to symmetrical two panels, hooks thorn,
The thorn that hooks is made up of base portion and the hook portion being connected with base portion, and the substrate of thorn base portion is hooked described in two panels from the pit bottom surface
Center extends to outside the pit, and to form each hook portion for hooking thorn, the sophisticated phase of the hook portion of thorn is hooked described in two panels
Right, the hook portion that thorn is hooked described in two panels forms opening.
In above-mentioned terrace emery wheel, as a preferred embodiment, the front portion of the cutter head is V-structure, V-type point
Angle beta is 5~90 degree；Preferably, the rotation direction of the V-type wedge angle of each cutter head differs；It is highly preferred that the rear portion of the cutter head
Groove is V-type groove, and the groove base angle of the V-type groove is 5~90 degree.
A kind of manufacture method of above-mentioned terrace emery wheel, comprises the following steps：
With powder step, carcass powder and diamond particles are well mixed, so as to obtain mixed-powder；
Pre-molding step, the mixed-powder is fitted into cutter head mold according to powder amount set in advance, then will be multiple
The cutter head mold is respectively placed in the relevant position of the outer peripheral surface of described matrix, then carries out precompressed with by the beginning of the cutter head
Step is fixed in described matrix, and so as to obtain the base substrate of terrace emery wheel, the pressure of the precompressed is 2~5T/cm2, the time be 1~
4 minutes；
Sintering step, hot pressed sintering, the pressure of the hot pressed sintering are carried out to the base substrate that pre-molding step is formed
For 15~30MPa, the first sintering temperature is 650~750 DEG C, and the first soaking time is 15~25 minutes；Then by the first sintering
Temperature is continuously heating to 800~900 DEG C of the second sintering temperature, and the second soaking time is 30~50 minutes, finally with pressure to be cooled to
Room temperature, so as to obtain the terrace emery wheel.
In above-mentioned manufacture method, as a kind of preferred embodiment, the granularity of the diamond particles is 30~50 mesh,
Wherein, the volume of the diamond particles of 30~40 mesh accounts for the 50% of the diamond particles cumulative volume, the diamond of 40~50 mesh
The volume of particle accounts for the 50% of the diamond particles cumulative volume.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：The matrix of the present invention has with cutter head junction
Boss advantageously ensures that the bonding strength of cutter head and matrix, prevents cutter head phenomenon；The cutter head front end of V-structure forms acute angle and cut
Sword is cut, quick cutting is realized and ensures the smooth exclusion of chip, solve the problems, such as the removing of floor coatings, and adjacent V-knife head
Wedge angle rotation direction is different, ensures multiple cutting faces during work, while abrasive action, designed tire are then played in V-knife head rear end
Body formula can effectively hold diamond, and low-temperature sintering more can guarantee that the cutting power of every diamond, in whole machining
During, processing part finish is ensure that, work piece surface impulse- free robustness, no marking is adapted to modern super without vaporific and chatter mark
The needs of hard material processing.
Brief description of the drawings
Fig. 1 is a kind of structural representation of cutter head provided in an embodiment of the present invention；
Fig. 2 is a kind of dimensional structure diagram of matrix that thorn is hooked with helical form provided in an embodiment of the present invention；
Fig. 3 is a kind of dimensional structure diagram of terrace emery wheel provided in an embodiment of the present invention；
Fig. 4 is that a kind of structure of the terrace emery wheel of adjacent tool tips inconsistent with rotation direction provided in an embodiment of the present invention is shown
It is intended to；
Fig. 5 is a kind of structural representation of the terrace emery wheel of adjacent tool tips consistent with rotation direction provided in an embodiment of the present invention
Figure.
Wherein, symbol description is as follows in figure：
1 matrix, 11 planar portions, 12 curved face parts, 13 noise reduction holes, 14 hook thorn, 15 pits, 2 cutter heads, 21 front portions, 22 rear portions, 23
Top surface, 24 first knife faces, 25 second knife faces, 26 first in face, 27 first trough wall surfaces, 28 second trough wall surfaces, 29 second face,
200 and 201 be two adjacent tool tips, the first opening wall of 100 hook thorns, the preceding surface of 101 hook thorns, the first side of 103 hook thorns
Face, 104 hook thorn opening
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to Fig. 1-5, the embodiments of the invention provide a kind of terrace emery wheel, it includes：For providing the He of matrix 1 of support
Multiple cutter heads 2.Specifically, matrix 1, it is overall in the form of annular discs, including：Planar portions 11 and curved face part 12.Planar portions 11 are in annulus
Shape, fixing and (referred to as sinter) by sintering process on its outer surface (i.e. the outer peripheral surface of matrix) has multiple cutter heads 2, in other words,
Multiple cutter heads are fixed with the top surface of planar portions 11 or bottom surface.Curved face part 12 is cylindrical in shape, from its bottom to its top orientation,
The horizontal cross-section radius of curved face part 12 is gradually reduced, and the bottom of curved face part 12 is connected with the inner peripheral surface of planar portions 11, the He of cutter head 2
The top of curved face part 12 is respectively in the outer surface both sides of planar portions 11, and noise reduction is provided between the top of curved face part 12 and bottom
Hole 13.Because terrace emery wheel is used to floor coatings cut with processing, the material of matrix 1 is preferably steel to strengthen the strong of matrix
Degree.Multiple cutter heads 2 are sintered on the outer peripheral surface of matrix 1, and during application, the outer surface of matrix 1 is towards floor coatings.Cutter head 2 exists
There is front portion 21 and rear portion 22 in cutting direction.Front portion 21 is used to be cut, and its top is in wedge angle；Rear portion 22 is used for chip removal,
Its bottom is provided with groove, so when terrace emery wheel works, solves the problems, such as that floor coatings are difficult to clean off, while improve and cut
Cut speed and work piece surface quality.
Realize that cutter head 2 is structure as a whole with matrix 1 because cutter head 2 is fixed on the outer surface of matrix 1 by sintering process, because
The outer surface of this cutter head 2 has top surface 23 and peripheral side.Referring to Fig. 1, top surface 23 is used to be ground；Peripheral side be by according to
The first knife face 24, the second knife face 25 of secondary connection, first at face 26, the first trough wall surface 27, the second trough wall surface 28 and second face
29 are formed.First knife face 24 and the connection of the second knife face 25 form wedge angle, and the first knife face 24 and the second knife face 25 connect (or phase
Hand over) the cutting edge of a knife or a sword side that is formed afterwards is cutting edge；First trough wall surface 27 and the connection of the second trough wall surface 28 form groove.Wedge angle is preferably V-type
Wedge angle, groove are preferably V-type groove, and now the bottom of groove is straight line, and the angle β number of degrees that V-type wedge angle is formed are preferably 5
~90 °, the number of degrees for the angle α that V-type groove is formed are 5~90 °.Further preferably, the second knife face 25 and the first trough wall surface 27 are flat
OK, the first knife face 24 is parallel with the second trough wall surface 28, first when face 26 is with second face 29 it is parallel.Still more preferably, cutter head 2
On as cutting edge of a knife or a sword while with V-type groove bottom/while determined by plane axisymmetricly cutter head, i.e. cutting edge of a knife or a sword side and the base institute of V-type groove
The plane of determination is the symmetry axis of cutter head, and now cutter head 2 is properly termed as V-knife head, and the front portion of cutter head is referred to as V-type wedge angle, cutter head
Rear portion be referred to as V-type dovetail.
Multiple cutter heads 2 are along the circumferential direction evenly distributed on the outer peripheral surface of matrix 1, between being left between adjacent tool tips 2
Every.Referring to Fig. 5, the rotation direction of the wedge angle of adjacent tool tips 200,201 can be consistent, i.e., the tip of each cutter head V-type wedge angle is to matrix table
The beeline of face outer ring edge line is identical, in other words, each cutter head V-type wedge angle it is sophisticated concyclic, that is to say, that each cutter head V-type point
The tip at angle is distributed in using the center of matrix as the center of circle, and radius is on R circumference, and R is point of the center of circle to a certain cutter head V-type wedge angle
The distance between end.Referring to Fig. 4, the rotation direction of the wedge angle of adjacent tool tips 200,201 can also be inconsistent, i.e., each cutter head V-type wedge angle
Tip to the beeline of matrix surface outer ring edge line differ, in other words, the tip of each cutter head V-type wedge angle is not concyclic,
That is the tip of each cutter head V-type wedge angle is not distributed in using the center of matrix as the center of circle, and radius is that R is the center of circle on R circumference
The distance between tip to a certain cutter head V-type wedge angle.The rotation direction of the wedge angle of adjacent tool tips 200,201 is inconsistent to be ensured
Terrace emery wheel provides multiple cutting faces when working.Illustrated so that matrix is provided with 10 cutter heads as an example, can be 10 cutter heads
It is distributed in the part cutter head on the circle of different radii or in 10 cutter heads to be distributed on the circle of same radius, such as Fig. 4 institutes
Showing, 5 are distributed on the circle that same radius is R1 in 10 cutter heads, and 5 are distributed on the circle that same radius is R2 in addition, and 10
Individual cutter head is interlaced to be set (i.e. along clockwise direction, be successively radius be R1 cutter head, radius be R2 cutter head, radius be
Cutter head that cutter head that cutter head that cutter head that R1 cutter head, radius is R2, radius are R1, radius are R2, radius are R1, radius R2
Cutter head, radius be R1 cutter head, radius be R2 cutter head), R1 is unequal with R2, and refers to the center of circle to corresponding cutter head V
The distance between tip of type wedge angle.
In order to strengthen holding effect of the cutter head to diamond, cutter head 2 is formed by carcass powder and diamond particles, wherein,
The carcass powder is made up of following component by weight percentage：Pre-alloyed powder FeCuCoSnTiCr：35~60%, Ni：3~
10%th, Cu：20~40%, Sn：3~10%, graphite powder：0.5~5%；It is highly preferred that in the cutter head, the diamond
Concentration is：10%-50% (concentration be 100% refer to that per unit volume cutter head containing diamond content is 0.88).
In order to strengthen the bonding strength of cutter head 2 and matrix 1 to avoid occurring in use the phenomenon that cutter head 2 drops,
Multiple projections are provided with the outer surface of matrix 1, multiple projections are corresponded in embedded multiple cutter heads 2, in other words, multiple knives
First 2 correspond and are coated on multiple raised outer, and in other words, the outer peripheral surface of matrix and the junction of cutter head are distributed with multiple convex
Rise.In order to further enhance the bonding strength of cutter head and matrix, multiple pits 15 are provided with the outer peripheral surface of matrix 1, respectively
Raised bottom extends from the center of pit bottom surface to outside pit, and in other words, raised bottom is located in pit 15, raised
Top be located at outside pit.Projection can have variously-shaped, such as helical form, T-shaped etc..
Referring to Fig. 2, it is preferable that projection is to hook thorn 14 with same shape and the two panels that is symmetrical set, hooks thorn 14 by base portion
Be connected with base portion hook portion composition, two panels hook thorn 14 base portions substrate be connected with the center of the bottom surface of pit 15 and oneself
The center of the bottom surface of pit 15 extends to outside pit 15, it is preferable that is extended with the trend away from pit axis, is pierced with forming each hook
14 hook portion, the tip that two panels hooks 14 hook portions of thorn is relative, and two panels hooks the hook portion that thorn 14 is stretched out outside pit 15 and forms opening 104, from
And beneficial to when manufacturing terrace emery wheel, realize fully connecing for the mixed-powder formed by carcass powder and diamond particles and matrix
Touch.The pit of setting improves the depth that cutter head is connected with matrix；Hook the contact area that thorn improves cutter head and matrix；Terrace is ground
Wheel sets mixed-powder by layering in the vertical, that is, top, surrounding and the lower section for hooking thorn are provided with mixing in pit
Powder, improve the bonding strength of matrix and cutter head.In order to further increase the contact area of cutter head and matrix, in described matrix
Two panels to hook thorn 14 be helical form or semi-spiral shape, i.e., two panels hook pierce the substrates of 14 base portions from the center of the bottom surface of pit 15 to
Outside pit 15 in the shape of a spiral or the extension of semi-spiral shape.
Specifically, hooking thorn 14 includes four surfaces, i.e., the first opening wall 100, preceding surface 101, rear surface, first side
103, the first opening wall 100 and first side 103 are oppositely arranged, and preceding surface 101 and rear surface are oppositely arranged, a piece of to hook what is pierced
First opening wall 100 and another the first opening wall 100 for hooking thorn form opening 104, and opening 104 is pointed to recessed along in pit
Direction outside hole gradually increases, the distance between the first opening wall 100 and first side 103 on the circumferencial direction of matrix 1
The direction pointed in along pit outside pit is gradually reduced, and the first opening wall 100 and first side 103 are arcwall face, are hooked
Thorn leaves gap between the first side 103 and the crater wall of pit in pit 15.Pit is circular hole, diameter 2mm with
Upper (such as 2mm, 2.5mm, 3mm, 4mm), hook the height (being vertical distance of the pit bottom surface to the hook portion tip for hooking thorn) of thorn
At more than 1mm (such as 1.2mm, 1.5mm, 2mm, 2.5mm).
Present invention also offers the manufacture method of above-mentioned terrace emery wheel, cutter head is by diamond particles and carcass powder mixing
It is integral with matrix compacting afterwards, it is sintered together by metallurgical technology cutter head and steel matrix.Specifically, this method includes as follows
Step：
With powder step, carcass powder and diamond particles are well mixed using mechanical mixing, so as to obtain mixed powder
End；
In the cutter head, the diamond concentration is：(concentration refers to that per unit volume cutter head contains to 10-50% for 100%
Diamond content is 0.88；
Carcass powder is made up of following component by weight percentage：Pre-alloyed powder FeCuCoSnTiCr：35~60%,
Ni：3~10%, Cu：20~40%, Sn：3~10%, graphite powder：0.5~5%；The pre-alloyed powder FeCuCoSnTiCr
The weight percent content of middle each element is：Fe：68~70%, Cu：4.5~13%, Co：12.5~13.5%, Sn：6~
8%, TiCr alloy：0.5~1%.The pre-alloyed powder FeCuCoSnTiCr is conventional using this area in the present invention
Water atomization is prepared.The carcass powder is also to be prepared using the conventional water atomization in this area.The TiCr is closed
Jin Zhong, Ti content are 10-70%wt%, and Cr contents are 30%-90%wt%, and the TiCr alloyed powders can be commercial alloys powder
Conventional mechanical attrition method can be used to be prepared.
The granularity of the diamond particles is preferably 30~50 mesh, wherein, the volume of the diamond particles of 30~40 mesh accounts for
The 50% of the diamond particles cumulative volume, the volume of the diamond particles of 40~50 mesh account for the diamond particles cumulative volume
50%.
Thorn procedure of processing is hooked, is such as processed using common process with drill drilling grain raising on pre- matrix positioned at described
The hook thorn of outer surface of matrix.Pre- matrix is obtained using conventional machining method.
Pre-molding step, the mould according to powder amount set in advance by mixed-powder loading according to tip shapes pre-production
In tool, then multiple cutter head molds are respectively placed in described matrix outer peripheral surface raised position at and mould is coated on institute
State in projection, then carry out precompressed to be tentatively fixed on cutter head on matrix by projection, so as to obtain the base substrate of terrace emery wheel,
The pressure of the precompressed is 2~5T/cm2(such as 2.5T/cm2、3T/cm2、3.5T/cm2、4T/cm2、4.5T/cm2、4.8T/
cm2), the time is 1~4 minute (such as 1.2min, 1.5min, 2min, 3min, 3.5min)；
Sintering step, carries out hot pressed sintering to base substrate, the pressure of the hot pressed sintering for 15~30MPa (such as 16MPa,
18MPa, 20MPa, 23MPa, 25MPa, 27MPa, 29MPa), the first sintering temperature be 650~750 DEG C (such as 660 DEG C, 680
DEG C, 700 DEG C, 720 DEG C, 730 DEG C, 740 DEG C), the first soaking time be 15~25 minutes (such as 16min, 20min, 22min,
24min)；Then by the first sintering temperature be continuously heating to 800~900 DEG C of the second sintering temperature (such as 810 DEG C, 820 DEG C, 840
DEG C, 860 DEG C, 880 DEG C, 890 DEG C), the second soaking time be 30~50 minutes (such as 35min, 38min, 40min, 45min,
48min), it is finally with pressure to be cooled to room temperature, so as to obtain the terrace emery wheel.
Cutter head and the integral sintered technique of matrix are significantly reduced product cost, and environmental protection is high by manufacturing process of the present invention
Effect, in the course of the work, diamond segment plays abrasive action to emery wheel, ensure that work piece surface impulse- free robustness, no marking without vaporific
And chatter mark, improve cutting speed, it is ensured that cutting quality.
The embodiment of several terrace emery wheel manufacturing process is set forth below.
Embodiment 1
(1) carcass powder and diamond particles mixing 1h are made uniformly by it using mechanical mixing, so as to obtain mixed powder
End；In cutter head, the volume of the diamond particles of 30~40 mesh accounts for the 50% of the diamond particles cumulative volume, 40~50 purposes
The volume of diamond particles accounts for the 50% of the diamond particles cumulative volume, diamond concentration 35%；Carcass powder is by weight
Percentage is made up of following component：Pre-alloyed powder FeCuCoSnTiCr：55%th, Ni：5%th, Cu：30%th, Sn：9%th, graphite
Powder：1%；The weight percent content of each element is in the pre-alloyed powder FeCuCoSnTiCr：Fe：69%, Cu：
10%, Co：13%, Sn：7%, TiCr alloy are (in TiCr alloys, Ti：50wt%, Cr：Wt%50)：1%.First use conventional water
Atomization prepares FeCuCoSnTiCr pre-alloyed powders, then prepares above-mentioned carcass powder using conventional water atomization again.
Thorn procedure of processing is hooked, the hook positioned at the outer surface of described matrix is processed on pre- matrix with drill drilling grain raising
Thorn.
Pre-molding step, the mould according to powder amount set in advance by mixed-powder loading according to tip shapes pre-production
In tool, then cutter head mold is respectively placed in the hook thorn opening position of the outer peripheral surface of matrix and mould is coated on the projection
On, precompressed is then carried out to be tentatively fixed on cutter head on matrix by hooking thorn, so as to obtain the base substrate of terrace emery wheel, precompressed
Pressure is 3T/cm2, the time is 2 minutes；
Sintering step, the base substrate after precompressed is put into vacuum hotpressing stove sintering, is first heated to 700 DEG C of (i.e. first sintering temperature
Degree), it is incubated 20 minutes (i.e. the first sintering time), then proceedes to heat up 850 DEG C (i.e. second sintering temperatures), be incubated 40 minutes
(i.e. the second sintering time), the hot pressing pressure entirely sintered are 20MPa, finally with pressure to be slowly cooled to room temperature with stove, so as to
To terrace emery wheel.
The performance of 10 terrace emery wheels manufactured in the present embodiment is determined after sintering, specific performance is as shown in table 1.
The cutter head performance of table 1
10 terrace emery wheels of the present embodiment occur without falling cutter head phenomenon during use, and chip can exclude smoothly, it is no because
The phenomenon appearance that chip can not exclude and cause terrace emery wheel not use.Work piece surface impulse- free robustness, no marking without vaporific and
Chatter mark.
Embodiment 2
In addition to the constituent content of carcass powder is different from embodiment 1, other steps are same as Example 1.This implementation
Example carcass powder constituent content be：Pre-alloyed powder FeCuCoSnTiCr：50%th, Ni：10%th, Cu：25%th, Sn：10%th, stone
Ink powder：5%.
The performance of the 10 terrace emery wheels obtained to the present embodiment is tested, and specific performance is as shown in table 2.
The cutter head performance of table 2
10 terrace emery wheels of the present embodiment occur without falling cutter head phenomenon during use, and chip can exclude smoothly, it is no because
The phenomenon appearance that chip can not exclude and cause terrace emery wheel not use.Work piece surface impulse- free robustness, no marking without vaporific and
Chatter mark.
Embodiment 3
In addition to the constituent content of carcass powder is different from embodiment 1, other steps are same as Example 1.This implementation
Example carcass powder constituent content be：Pre-alloyed powder FeCuCoSnTiCr：60%th, Ni：6%th, Cu：24%th, Sn：9%th, graphite
Powder：1%.
The performance of the 10 terrace emery wheels obtained to the present embodiment is tested, and specific performance is as shown in table 3.
The cutter head performance of table 3
10 terrace emery wheels of the present embodiment occur without falling cutter head phenomenon during use, and chip can exclude smoothly, it is no because
The phenomenon appearance that chip can not exclude and cause terrace emery wheel not use.Work piece surface impulse- free robustness, no marking without vaporific and
Chatter mark.
Embodiment 4
In addition to sintering step is different from embodiment 1, other steps are same as Example 1.The present embodiment sintering step
It is as follows：Base substrate after precompressed is put into vacuum hotpressing stove sintering, 750 DEG C is first heated to, is incubated 20 minutes, then proceedes to heat up
800 DEG C, 40 minutes are incubated, the hot pressing pressure entirely sintered is 20MPa, finally with pressure to be slowly cooled to room temperature with stove.
The performance of the 10 terrace emery wheels obtained to the present embodiment is tested, and specific performance is as shown in table 4.
The cutter head performance of table 4
10 terrace emery wheels of the present embodiment occur without falling cutter head phenomenon during use, and chip can exclude smoothly, it is no because
The phenomenon appearance that chip can not exclude and cause terrace emery wheel not use.Work piece surface impulse- free robustness, no marking without vaporific and
Chatter mark.
Embodiment 5
In addition to sintering step is different from embodiment 1, other steps are same as Example 1.The present embodiment sintering step
It is as follows：Base substrate after precompressed is put into vacuum hotpressing stove sintering, 650 DEG C is first heated to, is incubated 20 minutes, then proceedes to heat up
890 DEG C, 40 minutes are incubated, the hot pressing pressure entirely sintered is 25MPa, finally with pressure to be slowly cooled to room temperature with stove.
The performance of the 10 terrace emery wheels obtained to the present embodiment is tested, and specific performance is as shown in table 5.
The cutter head performance of table 5
10 terrace emery wheels of the present embodiment occur without falling cutter head phenomenon during use, and chip can exclude smoothly, it is no because
The phenomenon appearance that chip can not exclude and cause terrace emery wheel not use.Work piece surface impulse- free robustness, no marking without vaporific and
Chatter mark.
In summary, the embodiment of the present invention has the beneficial effect that：
The matrix of the present invention has the bonding strength that boss advantageously ensures that cutter head and matrix with cutter head junction, prevents knife
Head phenomenon；The cutter head front end of V-structure forms acute angle cutting edge, realizes quick cutting and ensures the smooth exclusion of chip, solves
The removing problem of floor coatings, and adjacent V-knife head wedge angle rotation direction is different, ensures multiple cutting faces during work, while V-type
Abrasive action is then played in cutter head rear end, and designed matrix formula can effectively hold diamond, and low-temperature sintering more can guarantee that often
The cutting power of diamond, in whole cutting process, processing part finish is ensure that, makes work piece surface hairless
Thorn, no marking adapt to the needs that modern superhard material is processed without vaporific and chatter mark.
Diamond segment is through pre-molding+hot pressed sintering after being well mixed by diamond abrasive grain with a kind of alloy carcass powder
Form, the present invention is the advantage with reference to steel instrument and sintered diamond tool, realizes that cutter head carcass material and diamond are firm
Metallurgical binding.And maintain and excellent go out sword effect.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, for each side, all it is merely illustrative, is not only.Institute
Have within the scope of the present invention or be included in the invention in the change being equal in the scope of the present invention.
Claims (12)
1. a kind of terrace emery wheel, it is characterised in that the terrace emery wheel includes：
Matrix, and
Multiple cutter heads, are fixed on the outer peripheral surface of described matrix by sintering process, and the cutter head has：Front and rear, institute
The top for stating front portion is in wedge angle；The bottom at the rear portion is provided with groove；
The cutter head is formed by carcass powder and diamond particles, wherein, the carcass powder is by weight percentage by such as the following group
It is grouped into：Pre-alloyed powder FeCuCoSnTiCr：35~60%, Ni：3~10%, Cu：20~40%, Sn：3~10%, graphite
Powder：0.5~5%；
The manufacture method of described terrace emery wheel comprises the following steps：
With powder step, carcass powder and diamond particles are well mixed, so as to obtain mixed-powder；
Pre-molding step, the mixed-powder is fitted into cutter head mold according to powder amount set in advance, then will be multiple described
Cutter head mold is respectively placed in the relevant position of the outer peripheral surface of described matrix, then carries out precompressed so that the cutter head is tentatively solid
Due in described matrix, so as to obtain the base substrate of terrace emery wheel, the pressure of the precompressed is 2~5T/cm2, the time is 1~4 point
Clock；
Sintering step, hot pressed sintering is carried out to the base substrate that pre-molding step is formed, the pressure of the hot pressed sintering is 15
~30MPa, the first sintering temperature are 650~740 DEG C, and the first soaking time is 15~25 minutes；Then by the first sintering temperature
800~900 DEG C of the second sintering temperature is continuously heating to, the second soaking time is 30~50 minutes, finally with pressure to be cooled to room temperature,
So as to obtain the terrace emery wheel.
2. terrace emery wheel according to claim 1, it is characterised in that the outer surface of the cutter head includes：Top surface and by
The face in face, the first trough wall surface, the second trough wall surface and second of one knife face, the second knife face, first is sequentially connected formed peripheral side
Face；
First knife face and the second knife face connect to form the wedge angle；
First trough wall surface and the second trough wall surface connect to form the groove.
3. terrace emery wheel according to claim 1, it is characterised in that in the pre-alloyed powder FeCuCoSnTiCr, respectively
The weight percent content of element is：Fe：68~70%, Cu：7.5~13%, Co：12.5~13.5%, Sn：6~8%,
TiCr alloys：0.5-1%.
4. terrace emery wheel according to claim 1, it is characterised in that be provided with the outer peripheral surface of described matrix multiple convex
Rise, in multiple raised embedded multiple cutter heads of one-to-one corresponding, the cutter head is firmly fixed in described matrix.
5. terrace emery wheel according to claim 4, it is characterised in that the raised height is in more than 1mm.
6. terrace emery wheel according to claim 4, it is characterised in that be provided with the outer peripheral surface of described matrix multiple recessed
Hole, the raised bottom are connected with the bottom surface of the pit, and the pit is stretched out on the raised top.
7. terrace emery wheel according to claim 6, it is characterised in that the diameter of the pit is in more than 2mm.
8. terrace emery wheel according to claim 6, it is characterised in that the projection is arranged to symmetrical two panels and hooks thorn, institute
State hook thorn to be made up of base portion and the hook portion being connected with base portion, the substrate of thorn base portion is hooked described in two panels from the pit bottom surface
Heart position extends to outside the pit, and to form each hook portion for hooking thorn, the tip for the hook portion for hooking thorn described in two panels is relative,
The hook portion that thorn is hooked described in two panels forms opening.
9. terrace emery wheel according to claim 6, it is characterised in that the front portion of the cutter head is V-structure, V-type wedge angle β
For 5~90 degree.
10. terrace emery wheel according to claim 9, it is characterised in that the rotation direction of the V-type wedge angle of each cutter head not phase
Together.
11. terrace emery wheel according to claim 6, it is characterised in that the rear groove of the cutter head is V-type groove, institute
The groove base angle for stating V-type groove is 5~90 degree.
12. terrace emery wheel according to claim 1, it is characterised in that the granularity of the diamond particles is 30~50 mesh,
Wherein, the volume of the diamond particles of 30~40 mesh accounts for the 50% of the diamond particles cumulative volume, the diamond of 40~50 mesh
The volume of particle accounts for the 50% of the diamond particles cumulative volume.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105945741B (en) * | 2016-05-19 | 2017-12-08 | 江苏超峰工具有限公司 | Wear-resisting type S type emery wheel hot press forming technologies |
| CN110216599A (en) * | 2019-07-08 | 2019-09-10 | 江苏金元素超硬材料有限公司 | A kind of sintering emery wheel and its sintering process |
| CN110281170A (en) * | 2019-07-22 | 2019-09-27 | 惠安宇信金刚石工具有限公司 | A kind of terrace emery wheel |
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