CN201253916Y - Core extraction drilling bit - Google Patents
Core extraction drilling bit Download PDFInfo
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- CN201253916Y CN201253916Y CNU2008201168368U CN200820116836U CN201253916Y CN 201253916 Y CN201253916 Y CN 201253916Y CN U2008201168368 U CNU2008201168368 U CN U2008201168368U CN 200820116836 U CN200820116836 U CN 200820116836U CN 201253916 Y CN201253916 Y CN 201253916Y
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Abstract
The utility model relates to a super hardening abrasive core-taking drill which can improve drilling efficiency in a drilling hole and prolong the service life of the drill; the drill comprises a cylindrical-tube shaped steel body arranged at the front end of the drill and a drilling shank which is integrated with cylindrical-tube shaped steel body into one body at the rear end thereof and is used for leading the core-taking drill to be arranged on a rotating main shaft of a drilling machine; at least one sector-section block with presetting length and height is extended at the end part of the cylindrical-tube shaped steel body along the axial direction; the sector-section block comprises a plurality of tooth pitches which are arranged according to the presetting height, and at least one pitch which is extended outwards or inwards along the radial direction of the core-taking drill is arranged in all the tooth pitches; besides, a single layer of super hardening abrasive material is bonded on the surface of each tooth pitch by bonding metal.
Description
Technical field
The utility model is relevant to a kind of super hard abrasive coring bit, can be applicable to the boring processing of materials such as stone material, glass, pottery.
Background technology
For hard brittle material, for example processing such as the boring of glass, stone material, pottery and refractory material etc. adopts conventional metal cutting drill bit not process, for example steel fluted drill or carbide drill.Have only the super hard abrasive drill bit that adopts particular design could implement processing, material hardness provides durable cutting edge for the super hard abrasive of highest level to processing.
On the whole, the super hard abrasive coring bit comprises a cylinder tube shape steel body, and this cylinder tube shape steel body one end is the working face that has super hard abrasive, and the other end constitutes a connection handle, can connect rig material is implemented to creep into.In drill bit uses, the linear velocity of coring bit generally lower (for example compare with saw blade sawing linear velocity 30m/s, its linear velocity is 1m/s-5m/s only generally), therefore abrasive material has been subjected to very big shearing force in coring bit uses.Simultaneously, when the working face of drill bit pierced surface of the work, drill bit abrasive material and workpiece in drilling process were Continuous Contact, if cooling and chip removal are not smooth, and the easy very high frictional heat of generation.The objective factor of this two aspect makes existing coring bit have the problem of use aspect.
Conventional at present coring bit has two kinds, and a kind of is to electroplate the super hard abrasive coring bit, and another kind is a sintering multi-block type super hard abrasive coring bit.The conventionally form of electroplating coring bit is directly individual layer abrasive material handle to be held in cylinder tube shape steel body end face by plated metal (for example nickel), and abrasive material is high concentration and distributes on end face.In use, although the initial stage drilling efficiency is very high, owing to be vulnerable to high shear force and high frictional heat in the drilling process, the abrasive material that high concentration is piled up produces passivation, and then makes the very fast decline of drilling efficiency.And owing to the individual layer abrasive material of this class coring bit all is distributed on the same working face, because the brute force that the slow-speed of revolution attaches abrasive dust to produce is ground, be easy to make the bonded metal wearing and tearing, cause coming off of abrasive material, in case abrasive material occurring comes off, the steel body will produce friction with workpiece, produce the high impedance of creeping into, and make the plating coring bit totally be low service life.
On the other hand, impregnated sintering multi-block type super hard abrasive coring bit in use abrasive material will be the multilayer exposure of replacement form, and this makes coring bit have long service life.But, adopt PM technique to be difficult to abrasive material be realized whole parcel or abrasive material is produced chemical adhesive, so the joint piece carcass of sintering has just produced weak-wrapped to abrasive material with the assurance bonded metal because super hard abrasive belongs to nonmetallic materials.This makes abrasive material in use be in low-level exposure (will produce meaningless coming off in case exposure is too high), therefore defines the intrusion to material, and drilling efficiency is relatively low.Simultaneously, the sintering coring bit generally will have thicker joint piece width and pipe wall thickness, guarantees self intensity and weld strength of sintering joint piece, avoids in use saving piece fracture or weld failure.Increase joint piece width means will increase the material removal amount, and this has further constituted restriction to the drilling efficiency raising of sintering multi-block type coring bit.In addition, in coring bit manufacturing process owing to increased welding step, the precision of multi-block type coring bit is affected easily (for example saving the welding positioning accuracy of piece and the thermal deformation of steel body), and then produce at the edge, hole of workpiece easily when using at the coring bit initial stage and collapse the limit, influence the presentation quality in drilling accuracy and hole.
Therefore, existing super hard abrasive coring bit is also existed improved needs.
The utility model content
The utility model purpose is the super hard abrasive coring bit that proposes a kind of novelty, and coring bit integral body has improved the utilization rate of abrasive material, in use embodies high drilling efficiency, long-life feature.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of super hard abrasive coring bit that can improve drilling efficiency and prolong drilling life of bit in boring, comprise the cylinder tube shape steel body that is positioned at front end, with be positioned at becoming one with described cylinder tube shape steel body and being used for coring bit is installed on the bit sub of the rotary main shaft of rig of rear end, the end of described cylinder tube shape steel body is stretched out at least one fan-shaped joint piece with predetermined length and height vertically, described fan-shaped joint piece comprises a plurality of pitches that are provided with by predetermined height, and the surface of described each pitch by bonded metal bonding the super hard abrasive of individual layer, at least one radially outward or inwardly the stretching out in described each pitch along coring bit.
The utility model produces the best to hard brittle material and creeps into performance with a kind of simple and effective and efficient manner has embodied a kind of feature combination of uniqueness.The utility model and prior art compare and have the following advantages: (1) pitch by coring bit main cutting face is staggered, for cooling fluid and chip removal provide unimpeded discharge-channel, has improved and has crept into performance; (2) staggered by the pitch of coring bit, the super hard abrasive that on main cutting face, alternately distributed, this effective hot discrete form has prevented that main cutting face from producing high frictional heat; (3) effect that obtains by above measure, make the bonding single layer of super hard abrasive of bonded metal on the fan-shaped joint piece, in use press the short transverse of fan-shaped joint piece, present the self-loopa of " exposure-wear and tear-come off-exposure ", make coring bit have the high efficiency feature of single layer bit and the long life characteristics of impregnated bit concurrently; (4) domatic by the main cutting face that on pitch main cutting face, presses 5 ° of-90 ° of negative angles of core drill bit direction of rotation formation, reduced the contact area of coring bit and workpiece at the use initial stage, the edge, hole that alleviates workpiece produces and collapses the limit, and drill bit is passed through running-in period smoothly; (5) because the super hard abrasive of coring bit is heated without the secondary of the block welding of celebrating a festival, has therefore alleviated the heat fade of abrasive material quality, and improved the accuracy of form and position of coring bit.
Use proof, super hard abrasive coring bit of the present utility model far exceeds the present conventional super hard abrasive coring bit that uses aspect serviceability.
Description of drawings
Fig. 1 is an axonometric drawing, has schematically shown super hard abrasive coring bit of the present utility model from the bottom side direction;
Fig. 2 is an axonometric drawing, has schematically shown super hard abrasive coring bit shown in Figure 1 from the top side direction;
Fig. 3 is an axonometric drawing, has represented another kind of scheme of the present utility model;
Fig. 4 is an axonometric drawing, has represented coring bit shown in Figure 1, and the main cutting face that presses core drill bit direction of rotation formation band negative angle is domatic;
Fig. 5 is an axonometric drawing, has represented another scheme of the present utility model;
Fig. 6 is a cutaway view, has represented the state of the utility model in boring processing;
Fig. 7 A, Fig. 7 B, Fig. 7 C and Fig. 7 D, respectively with the end of coring bit to view, schematically shown some variation schemes that the fan-shaped joint piece of coring bit extends radially out pitch;
Fig. 8 A, Fig. 8 B, Fig. 8 C and Fig. 8 D, respectively with the end of coring bit to partial enlarged view, represented the more radially-protruding variation schemes of the fan-shaped joint piece of coring bit;
Fig. 9 A, Fig. 9 B and Fig. 9 C are the N direction coring bit end face expansion partial enlarged view along Fig. 4, have represented to press some domatic variation schemes of main cutting face that core drill bit direction of rotation forms the band negative angle;
Among the figure: 1, cylinder tube shape steel body; 2, bit sub; 3, limbers; 4, the mouth of a river; 5, stretch out pitch outward; 6, stretch out pitch in; 8, the external wall of cylinder tube shape steel; 9, cylinder tube shape steel body inwall; 10, coring bit; 11, fan-shaped joint piece; 12, main cutting face; 13, cutting face, the outside; 14, inboard cutting face; 15, workpiece; 16, original position pitch; 17, footpath in the cylinder tube shape steel body; 18, super hard abrasive; 19, bonded metal; 20, rinforcement bar; 21, main cutting face end face; 22, main cutting face is domatic; 23, side in face of the main cutting; 24, main cutting face trailing flank; 25, pitch side groove; 26, pitch top groove.
The specific embodiment
Now come the utility model is carried out further detailed description referring to accompanying drawing.
The axonometric drawing of Fig. 1 and 2 has schematically shown the typical scenario that the utility model is bonded with the coring bit 10 of super hard abrasive 18 from bottom surface and end face direction respectively.Fig. 1 has schematically shown the bit sub 2 that coring bit 10 comprises that cylinder tube shape steel body 1 of front end and rear end and cylinder tube shape steel body 1 become one from the bottom surface direction.Bit sub 2 can be installed on the rotary main shaft of rig, and there is a limbers 3 (referring to Fig. 6) at the center of bit sub 2, can pass through limbers 3 pairs of coring bits, 10 internal feed cooling fluids in use.Wherein, six that be spacedly distributed, as to have predetermined length and height fan-shaped joint pieces 11 have been stretched out vertically in the end of cylinder tube shape steel body 1, each fan-shaped joint piece 11 includes four pitches that distribute by predetermined height---two press core drill bit 10 radially outward stretch out outer stretch out pitch 5, two press core drill bit 10 radially inwardly stretch out in stretch out pitch 6, described two are stretched out outward and stretch out pitch 6 in the pitch 5, two and be interspersed, constitute the coring bit 10 with staggered pitch with this.Each is outer stretch out pitch 5, in stretch out pitch 6 the surface by bonded metal 19 bonding the super hard abrasive 18 of individual layer.
Fig. 2 has schematically shown the cutwork face of coring bit 10 from the end face direction.The cutwork face of illustrated coring bit 10 is made up of equally spaced six mouths of a river 4 and six fan-shaped joint pieces 11 of segmentation.In use, the effect of cooling and channel of chip removal has been played at the mouth of a river 4, and fan-shaped joint piece 11 has played shear action.When the mouth of a river 4 quantity were determined, cooling and solid capacity can be strengthened in the wide mouth of a river 4, and because of corresponding the narrowing down of length of fan-shaped joint piece 11, can make cutting force more concentrated, helped improving drilling efficiency; Otherwise the narrow mouth of a river 4 has reduced cooling and solid capacity, and corresponding the broadening of length because of making fan-shaped joint piece 11, and cutting force is disperseed, and this helps improving the life-span of drill bit.Therefore, be appreciated that by mature technique, the mouth of a river 4 width of drill bit and quantity (with the width and the quantity of corresponding fan-shaped joint piece 11), can determine according to practical situations, the scheme that accompanying drawing embodied, just for the purpose of this utility model is described, the scheme of accompanying drawing is not construed as limiting the utility model.Equally, Fig. 1, each fan-shaped joint piece 11 shown in Figure 2 outer stretch out pitch 5 and in stretch out pitch 6 (being expressed as four among the figure), its quantity and width also will be determined according to practical situations, will give more detailed description to this hereinafter.
Fig. 3 is another program of Fig. 2.In the accompanying drawing shown in Figure 2, fan-shaped joint piece 11 outer stretch out pitch 5 and in stretch out pitch 6 and constituted " U " shape, promptly outer stretch out pitch 5 and in stretch out pitch 6 radially-protruding side surface be parallel to the main shaft of coring bit 10, like this, outside grinding face 13, the inboard cutting face 14 of side surface formation help playing the effect of protecting the footpath in drilling process.Shown in Figure 3 outer stretch out pitch 5 and in stretch out pitch 6 and constituted " V " shape, promptly radially along coring bit 10, stretch out pitch 5 outward and form one 5 °-30 ° of angles to the outer and inner main shaft that stretches out pitch 6 inside radially-protruding side surfaces and coring bit 10, can in drilling process, reduce and workpiece 15 between the side direction contact area, reduce side friction, improve drilling efficiency, and help improving cooling and chip removal effect.
Fig. 4 is the further improvement on Fig. 2 basis.When original coring bit 10 begins to creep into workpiece 15, each of the fan-shaped joint piece 11 of each of coring bit 10 shown in Figure 2 be outer stretch out pitch 5, in stretch out pitch 6, be to contact with workpiece 15 with plane surface, this plane is the axial perpendicular main cutting face end face 21 with coring bit 10.Since stretch out outward pitch 5 and in stretch out and be bigger contact area between pitch 6 and the workpiece 15 and reduced footprint pressure, be easy to make coring bit 10 on workpiece 15 surfaces " skidding ", cause the limit that collapses at edge, workpiece 15 hole, make coring bit 10 through after running-in period up to boring some holes, skid and the phenomenon that collapses the limit just can be extenuated.And drill bit shown in Figure 4 outside each, stretch out pitch 5 and in stretch out on the main cutting face end face 21 of pitch 6, constituted the main cutting face domatic 22 of 5 ° of-90 ° of negative angles along coring bit 10 direction of rotation R, coring bit 10 is brought into use just formed small area of contact with workpiece 15, improved footprint pressure, prevented that with this coring bit 10 from skidding on workpiece 15 surfaces and collapse the limit phenomenon, makes drill bit spend running-in period smoothly.
Fig. 5 has shown another scheme (mouth of a river 4 width of coring bit 10 are zero) of the utility model coring bit 10.In this scheme, although coring bit 10 does not present the mouth of a river 4, by stretch out outward pitch 5 and in stretch out toe joint 6 the staggered effect of having played cooling and chip removal equally.Owing to be arranging of continuous pitch, therefore produce Continuous Contact with workpiece 15, can improve drilling quality with this to workpiece 15.And, make coring bit 10 be the high life feature because improved the abrasive material quantity of whole coring bit 10.
The cylinder tube shape steel body 1 and the bit sub 2 of coring bit 10 generally are made of metal.In general, cylinder tube shape steel body 1 and the bit sub 2 common bit bodys that constitute will be satisfied with: (1) material has good machinability and processing and forming mode; (2) have coring bit and use desired intensity, hardness and toughness; (3) be suitable for the bonding manufacture craft of single layer of super hard abrasive.
Fig. 6 cutaway view has been represented the machining state that 10 pairs of workpiece 15 of coring bit are holed.Coring bit 10 by stretch out outward pitch 5 and in stretch out pitch 6, constituted drill bit main cutting face 12, cutting face, the outside 13 and inboard cutting face 14.12 pairs of materials of main cutting face have formed main excision; The guarantor that cutting face 13, the outside and the 14 pairs of drill bits in inboard cutting face have played the drill bit side direction directly acts on, and material is only played a spot of excision.Can see that by figure cylinder tube shape steel body inwall 9 and inboard cutting face 14 have constituted the interior sideshake of coring bit 10; External wall 8 of cylinder tube shape steel and cutting face, the outside 13 have constituted the outer sideshake of coring bit 10.When coring bit 10 pierces workpiece 15, cooling fluid will be entered into the inside of coring bit 10 by the limbers 3 of bit sub 2, then via interior sideshake → mouth of a river 4 (or stretch out outward pitch 5 and in stretch out pitch 6) → outer sideshake, cooling fluid is discharged together with smear metal.Coring bit 10 adopts alternative forms outer stretch out pitch 5 and in stretch out pitch 6, can by reconcile outer stretch out pitch 5 and in stretch out the overhang of pitch 6, set inside and outside sideshake, guarantee the smooth discharging of cooling fluid and smear metal, the efficient performance of performance coring bit 10 with this.
Fig. 7 A, Fig. 7 B, Fig. 7 C and Fig. 7 D be coring bit 10 ends to view, schematically shown on the fan-shaped joint piece 11 outer stretch out pitch 5 or in stretch out pitch 6 more radially-protruding schemes.Fan-shaped joint piece 11 shown in Fig. 7 A present outer stretch out pitch 5 and in stretch out alternately arranging of pitch 6; Fan-shaped joint piece 11 shown in Fig. 7 B presents outer alternately the arranging of pitch 5 and original position pitch 16 of stretching out; Stretch out alternately arranging of pitch 6 and original position pitch 16 in fan-shaped joint piece 11 presents shown in Fig. 7 C; Fan-shaped joint piece 11 shown in Fig. 7 D present outer stretch out pitch 5, original position pitch 16 and in stretch out alternately arranging of pitch 6.Be appreciated that these schemes can adopt separately, also can on same coring bit 10, make up two or more fan-shaped joint pieces 11 outer stretch out pitch 5, in stretch out pitch 6 and original position pitch 16 the various schemes that extend radially out.Simultaneously, principle of the present utility model is not subjected to limit at this schematic accompanying drawing and description.The staggered pitch of the utility model coring bit 10---stretch out outward pitch 5, in stretch out pitch 6 and original position pitch 16 spread pattern, enriched the design of the various machining status of the utility model coring bit 10 replies greatly, for example with the design of Fig. 7 B and Fig. 7 C, cutting width D is narrowed down, simplify the processing of cylinder tube shape steel body 1, help improving the drilling efficiency of coring bit 10; And the scheme of Fig. 7 A and Fig. 7 D has been owing to widened inside and outside sideshake, favourable raising the effect of cooling and chip removal.Then referring to Fig. 8 A-Fig. 8 D.
Fig. 8 A has further schematically shown fan-shaped joint piece 11 outer stretch out pitch 5 and in stretch out pitch 6 respectively radially outward and some scheme details of inwardly stretching out.By mature technique be appreciated that outer stretch out pitch 5 and in stretch out the thickness W of the width W ' of pitch 6 and cylinder tube shape steel body 1 can be identical or different; And the length L 1 of stretching out pitch 5 outward with in stretch out the length L 2 of pitch 6 also can be identical or different.By these variations, the distribution of creeping into width, main cutting face 12 super hard abrasives 18 (being the hardness of drill bit drilled surface) and the cooling chip removal that can change the main cutting face 12 of coring bit 10 distribute, by simple design and form processing, promote the performance of creeping into of coring bit 10 greatly, improved the adaptability that coring bit 10 is directed to various operating modes.
Except stretch out pitch 5 and in stretch out outside the width of pitch 6 and length can change, stretch out outward pitch 5 outwards, in stretch out pitch 6 inside overhangs and also can produce corresponding variation.Outer shown in Fig. 8 A stretch out pitch 5 the radially inner side face and in stretch out pitch 6 radial outer side respectively with cylinder tube shape steel body in footpath 17 overlapping; And outer shown in Fig. 8 B stretch out pitch 5 the radially inner side face and in stretch out pitch 6 radial outer side respectively with cylinder tube shape steel body in footpath 17 be biasing.This distribution mode narrows down the kerf width D of coring bit 10, helps improving the efficient of drill bit.By biasing the super hard abrasive 18 of coring bit 10 main cutting faces 12 is distributed simultaneously and be able to further dispersion, make each of coring bit 10 fan-shaped joint pieces 11 outer stretch out pitch 5 and in stretch out pitch 6 inside and outside side, constituted the four layer side superhard abrasive bed of material (Fig. 8 A can be considered three layer) concentric jointly, satisfied the reasonable distribution of abrasive material on drill bit master grinding face 12 with coring bit 10 main shafts.By mature technique be appreciated that by regulate outer stretch out pitch 5 and in stretch out pitch 6 amount of bias, can produce more multi-layered time super hard abrasive aspect.For example, if outer shown in Fig. 8 B stretch out pitch 5 and in stretch out and insert original position pitch 16 between the pitch 6, then can constitute the six layer side abrasive material (do not show) concentric with coring bit 10 main shafts.
Fig. 8 C has represented the further improvement on coring bit 10 bases shown in Fig. 8 A.In 10 schemes of the coring bit shown in Fig. 8 A, fan-shaped joint piece 11 outer stretch out pitch 5 with in stretch out pitch 6 and be the pitch that separates, for improve outer stretch out pitch 5 and in stretch out bulk strength between the pitch 6, can adjacent outer stretch out pitch 5 and in stretch out between the pitch 6, constitute the rinforcement bar 20 of the two connection, improve the bulk strength that face is crept in coring bit 10 work.
Fig. 8 D represented fan-shaped joint piece 11 extend radially out outer stretch out pitch 5 and in stretch out another variation pattern of pitch 6.By stretch out outside pitch 5 and in stretch out pitch 6 lateral surface constitute some pitch side grooves 25 (only expressing among the figure), super hard abrasive 18 whole cooling, the chip removals of cutting distribution and grinding skin that can further regulate on the coring bit 10 fan-shaped joint piece 11 work grinding faces distribute.For the performance that improves coring bit 10 further provides a kind of simple and feasible mode.
Be appreciated that equally above-mentioned these schemes can adopt separately, also can be on same coring bit 10 or same fan-shaped joint piece 11, embody above-mentioned two kinds of schemes above outer stretch out pitch 5, in stretch out collocation between pitch 6 and the original position pitch 16.Therefore, principle of the present utility model is not subjected to limit at this schematic accompanying drawing and description.
When common super hard abrasive coring bit uses in the early stage, owing to constituted bigger contact area between the smooth cutting face of drill bit and the workpiece, therefore in use to experience a running-in period, cause drill bit on surface of the work, to produce between running-in period easily to skid or the limit is collapsed in the hole generation of being bored.And the utility model by stretch out outside pitch 5, in stretch out on the main cutting face 12 of pitch 6 and original position pitch 16, constitute the main cutting face domatic 22 that is 5 ° of-90 ° of negative angles with main cutting face end face 21 along coring bit 10 direction of rotation, reduced the contact area of coring bit 10 at the use initial stage with workpiece 15, the edge, hole that alleviates workpiece 15 produces and collapses the limit, and drill bit is passed through running-in period smoothly.
Fig. 9 A launches partial enlarged view along the N direction of Fig. 4 with the utility model coring bit 10 end faces, has represented to form along coring bit 10 direction of rotation R the details of the main cutting face domatic 22 of band negative angle.When coring bit 10 was brought into use, main cutting face end face 21 formed with workpiece 15 and contacts; Along with super hard abrasive 18 wearing and tearing and the consumption of main cutting face end face 21, the abrasive material 18 of main cutting face domatic 22 will drop into cutting continuously; Behind the abrasive material 18 of main cutting face domatic 22 attrition successively, then the super hard abrasive 18 by side 23 in face of the main cutting continues to drop into processing, up to outside stretch out pitch 5 and in stretch out pitch 6 whole height H and exhaust, realized with single layer of super hard abrasive grinding tool technology, be converted into the pattern that super hard abrasive 18 in use consumes one by one by multilayer, make coring bit 10 of the present utility model both embodied individual layer abrasive material drill bit more the high efficiency feature, also embodied simultaneously the long life characteristics of sintering multi-block type super hard abrasive drill bit.
Therefore, during the use of the utility model coring bit 10, contact area minimum during beginning and between the workpiece 15, along with main cutting face end face 21 consumes, main cutting face domatic 22 forms with workpiece 15 and contacts, to increase gradually with the contact area of workpiece 15, side 23 participates in adding man-hour in face of main cutting, and the main cutting face 12 of coring bit 10 just is in and the workpiece 15 relative states of contact area stably.The structure of this band main cutting face domatic 22 produces high cutting force when coring bit 10 is used in the early stage, therefore prevented the skidding of coring bit 10, makes coring bit 10 spend running-in period stably, has also improved the quality of creeping into of workpiece 15 simultaneously.
Utility model coring bit 10 shown in Fig. 9 B has constituted two main cutting faces domatic 22 at each pitch of fan-shaped joint piece 11; The coring bit 10 of Fig. 9 C on each pitch main cutting face end face 21 of fan-shaped joint piece 11, has a pitch top groove 26.The effect that these schemes embody is all the same with Fig. 8 A, and its purpose all is to make coring bit 10 to reduce to improve cutting force to creeping into the contact area of workpiece 15 at the use initial stage, prevents the skidding of coring bit 10, makes coring bit 10 spend running-in period smoothly.Therefore utility model has solved coring bit 10 and has used the break-in problem at initial stage in a kind of simple and convenient mode.
Another key character of the present utility model is the manufacture craft that adopts the single layer of super hard abrasive grinding tool.This class technology comprises electroplating technology and soldering processes.When adopting electroplating technology, on coring bit 10 fan-shaped joint piece 11 each pitch, the bonded metal 19 of controlling super hard abrasive 18 can be a nickel.By electroplating, can constitute tight parcel to abrasive material, produce firm machinery and control.When adopting soldering processes, the bonded metal 19 of controlling super hard abrasive 18 can be Cu-Ti alloy, Ni-Cr alloy etc.By containing in the solder super hard abrasive 18 is had active composition, can produce high-intensity chemical adhesive super hard abrasive 18.No matter adopt electroplating technology that super hard abrasive 18 is constituted mechanical cohesive bond, still adopt soldering tech that super hard abrasive 18 is constituted chemical adhesive,, all be higher than powder metallurgy sintered carcass controlling super hard abrasive 18 to the controlling property of super hard abrasive 18.Therefore coring bit 10 has in use improved the utilization rate of super hard abrasive 18 greatly.
The employed super hard abrasive 18 of the utility model can be natural or diamond synthesis abrasive material, dimond synneusis, cubic boron nitride abrasive materials, polycrystalline cubic boron nitride or these mixtures of material.The particle size range of abrasive material is 63 μ m to 750 μ m.
By above detailed description with reference to the accompanying drawings, the concrete feature and the advantage of the utility model coring bit 10 have been embodied, should be appreciated that the form of presentation and the schematic figures of above descriptive language literal of the present utility model, just, do not have limited implication for the utility model is described easily.
Therefore, it will be appreciated that, under the prerequisite that does not deviate from above-mentioned the utility model category, can carry out various improvement and variation the utility model by the maturity of the novel structure feature that the utility model proposes, operating characteristic and employing ordinary skill.Therefore, the utility model will be limited by claim and the description that constitutes equivalence.
Claims (10)
1, a kind of coring bit that is bonded with super hard abrasive, comprise the cylinder tube shape steel body that is positioned at front end, with be positioned at becoming one with described cylinder tube shape steel body and being used for coring bit is installed on the bit sub of the rotary main shaft of rig of rear end, the end of described cylinder tube shape steel body is stretched out at least one fan-shaped joint piece with predetermined length and height vertically, described fan-shaped joint piece comprises a plurality of pitches that are provided with by predetermined height, and the surface of described each pitch by bonded metal bonding the super hard abrasive of individual layer, it is characterized in that: at least one radially outward or inwardly the stretching out in described each pitch along coring bit.
2, coring bit according to claim 1 is characterized in that: described super hard abrasive is a kind of in diamond, the cubic boron nitride.
3, coring bit according to claim 1 is characterized in that: described cylinder tube shape steel body material is a metal.
4, coring bit according to claim 1 is characterized in that: the super hard abrasive of individual layer is adhered to the grinding face of profiling joint block by plated metal.
5, coring bit according to claim 1 is characterized in that: described super hard abrasive is adhered to the grinding face of profiling joint block by brazing material.
6, coring bit according to claim 1 is characterized in that: the radially-protruding side surface of described each pitch is parallel to the main shaft of coring bit.
7, coring bit according to claim 1 is characterized in that: each pitch on each fan-shaped joint piece separates.
8, coring bit according to claim 1 is characterized in that: have the rinforcement bar that is connected with described pitch between adjacent each pitch on each fan-shaped joint piece.
9, coring bit according to claim 1, it is characterized in that: the end face of described pitch has the axial perpendicular main grinding face end face with coring bit, and pitch has also that to be the main cutting face of 5 ° of-90 ° of negative angles along coring bit direction of rotation and main cutting face end face domatic.
10, coring bit according to claim 1 is characterized in that: the end face of described pitch has the axial perpendicular main grinding face end face with coring bit, and described main cutting face end face has pitch top groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201168368U CN201253916Y (en) | 2008-05-08 | 2008-05-08 | Core extraction drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201168368U CN201253916Y (en) | 2008-05-08 | 2008-05-08 | Core extraction drilling bit |
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| Publication Number | Publication Date |
|---|---|
| CN201253916Y true CN201253916Y (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201168368U Expired - Fee Related CN201253916Y (en) | 2008-05-08 | 2008-05-08 | Core extraction drilling bit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104741667A (en) * | 2015-03-23 | 2015-07-01 | 深圳市圆梦精密技术研究院 | Shell hole machining drill bit |
| CN108005583A (en) * | 2017-12-28 | 2018-05-08 | 中国电建集团成都勘测设计研究院有限公司 | Bored for the self-control core drill of pore-forming on the basis of hydroelectric project and the broken core of self-control |
| CN111550190A (en) * | 2020-01-17 | 2020-08-18 | 润盛建设集团有限公司 | Core bit is got in concrete drilling bored concrete pile defective pile restoration processing |
| CN114458170A (en) * | 2022-04-12 | 2022-05-10 | 石家庄创申建筑装饰工程有限公司 | Highway engineering road surface drilling system |
| CN114734541A (en) * | 2022-06-13 | 2022-07-12 | 北京安泰钢研超硬材料制品有限责任公司 | Self-chip-removal brazing diamond thin-wall drill bit and preparation method thereof |
| WO2023130015A1 (en) * | 2021-12-29 | 2023-07-06 | Saint-Gobain Abrasives, Inc. | Abrasive articles and methods for forming same |
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2008
- 2008-05-08 CN CNU2008201168368U patent/CN201253916Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741667A (en) * | 2015-03-23 | 2015-07-01 | 深圳市圆梦精密技术研究院 | Shell hole machining drill bit |
| CN108005583A (en) * | 2017-12-28 | 2018-05-08 | 中国电建集团成都勘测设计研究院有限公司 | Bored for the self-control core drill of pore-forming on the basis of hydroelectric project and the broken core of self-control |
| CN111550190A (en) * | 2020-01-17 | 2020-08-18 | 润盛建设集团有限公司 | Core bit is got in concrete drilling bored concrete pile defective pile restoration processing |
| WO2023130015A1 (en) * | 2021-12-29 | 2023-07-06 | Saint-Gobain Abrasives, Inc. | Abrasive articles and methods for forming same |
| CN114458170A (en) * | 2022-04-12 | 2022-05-10 | 石家庄创申建筑装饰工程有限公司 | Highway engineering road surface drilling system |
| CN114458170B (en) * | 2022-04-12 | 2022-07-01 | 石家庄创申建筑装饰工程有限公司 | Highway engineering road surface drilling system |
| CN114734541A (en) * | 2022-06-13 | 2022-07-12 | 北京安泰钢研超硬材料制品有限责任公司 | Self-chip-removal brazing diamond thin-wall drill bit and preparation method thereof |
| CN114734541B (en) * | 2022-06-13 | 2022-09-23 | 北京安泰钢研超硬材料制品有限责任公司 | Self-chip-removing brazing diamond thin-wall drill bit and preparation method thereof |
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