CN104400080A - Deep hole drill - Google Patents
Deep hole drill Download PDFInfo
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- CN104400080A CN104400080A CN201410492242.7A CN201410492242A CN104400080A CN 104400080 A CN104400080 A CN 104400080A CN 201410492242 A CN201410492242 A CN 201410492242A CN 104400080 A CN104400080 A CN 104400080A
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- cutter head
- carbide
- matrix
- cutting
- depth drill
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- 238000005520 cutting process Methods 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 36
- 238000005245 sintering Methods 0.000 claims description 34
- 239000011159 matrix material Substances 0.000 claims description 33
- 238000009413 insulation Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 19
- 230000014759 maintenance of location Effects 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 15
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 10
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 230000001186 cumulative effect Effects 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims description 6
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 claims description 6
- 229910003470 tongbaite Inorganic materials 0.000 claims description 6
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 24
- 238000003754 machining Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 5
- 229910017052 cobalt Inorganic materials 0.000 description 5
- 239000012809 cooling fluid Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000007792 gaseous phase Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
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- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910020630 Co Ni Inorganic materials 0.000 description 1
- 229910002440 Co–Ni Inorganic materials 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
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- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/28—Details of hard metal, i.e. cemented carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/20—Number of cutting edges
- B23B2251/202—Three cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/24—Overall form of drilling tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
- B23B51/063—Deep hole drills, e.g. ejector drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention provides a deep hole drill, and belongs to the technical field of cutters for drilling machines. The deep hole drill comprises a basal body, multiple blades mounted at the end of the basal body, and multiple guide blocks mounted on the peripheral surface of the basal body, wherein the basal body is cylindrical, and comprises a mounting part, a connecting part and a cutting part connected in sequence; chip removing holes are formed in the basal body along the axis; the mounting part is provided with multiple lines of threadlike connecting teeth parallel to each other; fixed rings are projected between the connecting part and the mounting part; the outer diameters of the fixed rings are greater than or equal to the outer diameters of the connecting teeth; two cutting grooves are formed in the end of the cutting part, and are communicated to the chip removing holes; guide blocks are mounted on the peripheral surface of the cutting part; multiple cooling grooves are formed in the peripheral surface of the cutting part between the two cutting grooves, and are parallel to the axis of the basal body; the blades are made of hard alloy materials; and the hard alloys contain metal carbide powder and metal binders. The deep hole drill has the advantages of good cooling effect, smooth chip removal and long service life.
Description
Technical field
The invention belongs to the cutting-tool engineering field for drilling machine, relate to a kind of depth drill.
Background technology
Depth drill is the drill bit being specifically designed to deep hole processing.In machining, usually the hole that hole depth and the ratio in aperture are greater than 6 is called deep hole.During gun drilling, heat radiation and chip removal difficulty, and because drilling rod is elongated poor rigidity, easily produce bending and vibrate.General all will solution by pressurized cooling system cools and chip removal problem.
Patent CN103781580A discloses a kind of deep-hole boring drill head, in the chip discharge mouth of apical head face opening, by soldering, cutting edge blade is installed, multiple positions of the side face in apical head side are provided with guide pad, and using empty internal as the chip discharge road be communicated with chip discharge mouth, wherein, on the outer face of periphery cutting edge blade, be formed with the guide pad portion in arc surface being slidingly contacted at cutting hole inner circumferential.
The conveying of above-mentioned deep-hole boring drill head cooling fluid when deep hole processing is inconvenient, and cooling effect is poor, chip removal weak effect.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of good cooling results, the depth drill of chip removal smoothness.
Object of the present invention realizes by following technical proposal: a kind of depth drill, comprise matrix, the some blades being arranged on matrix end and the some guide pads be arranged on the outer peripheral face of matrix, it is characterized in that, described matrix is cylindrical comprises the installation portion connected successively, connecting portion and cutting portion, matrix offers chip-removal hole along axis, described installation portion is provided with the screw-shaped connection tooth that some row are parallel to each other, protrude between described connecting portion and installation portion and be formed with retainer ring, the external diameter of described retainer ring is more than or equal to the external diameter connecting tooth, two cutting slots of Relative distribution are had at the end opens of cutting portion, described cutting slot is communicated to chip-removal hole, described guide pad is arranged on the outer peripheral face of cutting portion, the outer peripheral face of the cutting portion between two cutting slots offers some cooling baths, described cooling bath is parallel to the axis of matrix, wherein, described inserts from cemented carbide material is made, described carbide alloy contains metal carbide powders and metal adhesive, described metal carbide powders contains the tungsten carbide of 50-60%, the vanadium carbide of 3-8%, the chromium carbide of 5-12%, the titanium carbide of 3-12%, the niobium carbide of 3-8%, described metal adhesive contains the metallic cobalt powder of 6-10%, the metallic nickel powder of 6-8%.
The cutter head of depth drill of the present invention is made up of Hardmetal materials, by the constituent in adjustment Hardmetal materials and mass percent thereof, the cutter obtained is made to have high rigidity, high strength, high tenacity, high-wearing feature, during high-speed cutting, wear rate is low, there is good non-oxidizability, heat resistance and chemical stability simultaneously, be applied in depth drill and can increase work efficiency further, extend the service life that deep water bores.
The size of tungsten carbide particle is less, the hardness of carbide alloy is higher, but in sintering process, tungsten carbide particle combines by dissolving the process separated out again and grows up, thus in sintered article, form discontinuous tungsten carbide large grain size of growing up, the mechanical property of Hardmetal materials is caused significantly to reduce on the contrary, the present invention is by rationally adding vanadium carbide, chromium carbide, titanium carbide and niobium carbide, them are made to be dissolved in completely in Binder Phase, thus reduce the solubility of tungsten carbide in Binder Phase, control the coarsening rate of tungsten carbide particle, improve the hardness of carbide alloy, and the use amount of tungsten carbide can be reduced under similar stiffness, reduce the cost of alloy material.Wherein, during sintering cooling, vanadium carbide can be separated out with nanometer (WV) C particle, chromium carbide to be then solid-solubilized in Binder Phase and at WC/Co interfacial segregation, thus hinder short grained tungsten carbide crystal grain by crystallization of the dissolution and precipitation mechanism shift on bulky grain tungsten carbide crystal grain, inhibit the growth of crystal grain.Want and WC relative to the hardness of WC, TiC, heat endurance is better than WC, has good high temperature oxidation resistance, also has good cracking resistance line Forming ability, not easily produces stress and concentrates, have good greasy property and lower coefficient of friction.Coordinate the TiC of other carbide and Co-Ni Binder Phase can put forward heavy alloyed intensity, hardness, and be applicable to the blade making depth drill.And niobium carbide is soluble in the compound such as titanium carbide, tungsten carbide, and generate law of isomorphism solid solution mixture together, effectively improve yield strength and the wearability of carbide alloy, thus greatly improve cutting power and the service life of product.The present invention, by after above-mentioned several carbide according to the above ratio compatibility, plays the effect strengthening synergistic by the not same-action played in alloy material, not only effective inhibiting grain growth, effectively can also strengthen the performances such as the intensity of alloy material, hardness and toughness.Vanadium carbide, chromium carbide, titanium carbide, niobium carbide can not exceed limited range of the present invention, otherwise, the densification process of alloy can be affected because of too high levels, leave residual clearance, reduce the hardness of alloy material.
Metallic cobalt and metallic nickel are as Binder Phase, the structure of its content and distribution alloy material thereof, hardness, intensity, the performance tools such as toughness have a certain impact, along with the increase of metallic cobalt content of powder, the hardness of alloy material can decrease, but toughness and intensity then increase thereupon, the present invention is in order to balance the hardness of final alloy material, the performance such as intensity and toughness, the content of metallic cobalt powder and metallic nickel powder is controlled respectively at 6-10%, 6-8%, make metallic cobalt and metallic nickel play purification crystal boundary and significantly improve the bending strength of material, impact flexibility, the performances such as hardness.
As preferably, the granularity of described metal carbide powders is 0.1-0.6 μm.The granularity of metal carbide powders is less, and intensity is higher.
As preferably, the granularity of described tungsten carbide is 0.2-0.5 μm, and the carbide in this particle size range can ensure that carbide alloy has good hardness, can put forward heavy alloyed mar proof and fracture resistance simultaneously.
As preferably, the granularity of described vanadium carbide is 0.2-0.3 μm.
As preferably, the granularity of described metallic cobalt powder and metallic nickel powder is 0.1-0.4 μm.
In above-mentioned a kind of depth drill, described cooling bath is made up of some arc-shaped surfaces intersected continuously.
In above-mentioned a kind of depth drill, described blade is provided with three pieces and the arrangement in " one " word, comprise the first cutter head, the second cutter head and the 3rd cutter head, described cutting slot comprises the first grooving and the second grooving, described first cutter head to be arranged on the first grooving and with the axes intersect or tangent of matrix, described 3rd cutter head to be arranged on the first grooving and the outer peripheral face of outstanding matrix, and described second cutter head is arranged on the regional complementarity or crossing that on the second grooving and the region that the second cutter head rotates rotates with the first cutter head and the 3rd cutter head.
In above-mentioned a kind of depth drill, described cutter head be the raw material of Hardmetal materials compressing through batching mixing, low-temperature protection grinding, cold conditions negative pressure drying, isostatic pressed, sinter and cooling processing obtained; Described sintering is divided into preheating, pre-burning and sintering three processes, described warm-up phase temperature is 420-480 DEG C, temperature retention time is 50-80min, described pre-burning phase temperature is 1220-1270 DEG C, temperature retention time is 50-100min, described sintering phase temperature is 1380-1480 DEG C, and temperature retention time is 50-100min, and described three phases programming rate is 3-8 DEG C/min.
Sintering is the step of the most basic, the most critical in Hardmetal materials preparation process, has conclusive impact to the quality of product.The present invention first carries out preheating to compressing blank, discharges organic lubricator and is adsorbed on surperficial part of impurity elements; Then carry out pre-burning, eliminate the stress between powder particle, complete not part densification process, finally sinter, complete densified.
Described batching is mixed into adds the mixing of raw material cumulative volume 30% ethanolic solution again after dry state premix, and it is proceed under 50-80kPa nitrogen circulation environment to mix that described batching is blended in pressure.By being mixed with to be beneficial under negative-pressure cyclic nitrogen environment, remaining breath impurity in raw material is derived, while improving mixed effect, can also lattice defect in following process, improve stress performance, improve the quality of products.
Described low-temperature protection is ground to the ball milling 3-4 hour discharging under the nitrogen environment of-10--5 DEG C of mixed wet feed.Low temperature environment can frictional heating in time everywhere in process of lapping, reduces material creep, reduces fault in material, improve the quality of grinding.
Described cold conditions negative pressure drying is the raw material after being ground by low-temperature protection is dry under 10-20kPa circulating nitrogen gas protection of the environment as pressure, and baking temperature is-5-4 DEG C, drying time 1-2 hour.Negative pressure drying can improve drying efficiency, simultaneously by circulating nitrogen gas volatilizable impurity component everywhere.
The described sintering stage needs to pass into the sintering pressure that inert gas forms 6-8MPa, reduces voidage, makes alloy more densified.
Described cooling processing be by sintering after razor blade stock be first cooled to 620-650 DEG C with 3-4 DEG C/min speed, insulation 30-50min; Then 450-480 DEG C is cooled to 3-4 DEG C/min speed, insulation 30-50min; 220-230 DEG C is cooled to again, insulation 2-3min with 3-4 DEG C/min speed; Again with 4-6 DEG C/min ramp to 350-380 DEG C, insulation 30-50min; Be cooled to 220-230 DEG C with 2-4 DEG C/min speed again, then with 3-4 DEG C/min ramp to 550-580 DEG C, insulation 2-3 hour, takes out air cooling and get final product.
In above-mentioned a kind of depth drill, described bit interface is also coated with the SiC coating that thickness is 0.3-0.5mm.Described coating process is the one in physical vapour deposition (PVD) or plasma chemical deposited coatings method.After the bit interface coating that the present invention makes at Hardmetal materials, effectively can improve the machining ability of cutter head, and reduce processing wearing and tearing and improve machining accuracy, thus effectively improve quality and the service life of cutter head.
In above-mentioned a kind of depth drill, described guide pad has two pieces to comprise the first guide pad and the second guide pad, and the outer peripheral face that the first guide pad is arranged on matrix is positioned on the extended line of blade line, and the second guide pad is connected on the outer peripheral face of cutting portion.
Compared with prior art, the present invention has following advantage:
1, on the outer peripheral face of matrix, offer cooling bath, during punching, cooling fluid can enter into bottom hole along cooling bath, and flow is large, effectively can cool drill bit, extends the service life of drill bit.
2, arrange retainer ring be connected tooth can facilitate depth drill install extension bar, it is firm to connect, easy for installation.
3, arrange depth drill when guide pad can balance depth drill processing cutting hole to beat, hole machined is steady, and surface quality is good.
4, blade is a word distribution, both sides machining, stable cutting.
5, cutter head is made up of Hardmetal materials, and the constituent in the whole Hardmetal materials of a step of going forward side by side and mass percent thereof, make the cutter head made have the performances such as very high hardness, intensity, toughness and wearability.
6, cutter head have adjusted sintering process in preparation process, is divided by sintering process three phases to carry out, and has carried out extremely careful post processing to cutter head after having sintered, and improves the mechanical property of cutter head further.
7, be also coated with certain thickness coating at bit interface, effectively improve the machining ability of cutter head, and reduce processing wearing and tearing and improve machining accuracy, thus effectively improve quality and the service life of cutter head.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that medium-length hole of the present invention bores the structural representation with extension bar.
Fig. 3 is the main TV structure schematic diagram of drill bit in the present invention.
In figure, 1, matrix; 11, installation portion; 12, connecting portion; 13, cutting portion; 14, retainer ring; 15, tooth is connected; 16, cutting slot; 161, the first grooving; 162, the second grooving; 17, cooling bath; 18, chip-removal hole; 2, blade; 21, the first cutter head; 22, the second cutter head; 23, the 3rd cutter head; 3, guide pad; 31, the first guide pad; 32, the second guide pad; 4, extension bar; .
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As Fig. 1, shown in Fig. 2 and Fig. 3, this depth drill, comprise the matrix 1 of hollow, the some blades 2 being arranged on matrix 1 end and the some guide pads 3 be arranged on the outer peripheral face of matrix 1, matrix 1 is cylindrical comprises the installation portion 11 connected successively, connecting portion 12 and cutting portion 13, matrix 1 offers chip-removal hole 18 along axis, installation portion 11 is provided with the screw-shaped connection tooth 15 that some row are parallel to each other, protrude between connecting portion 12 and installation portion 11 and be formed with retainer ring 14, the external diameter of retainer ring 14 is more than or equal to the external diameter connecting tooth 15, connect tooth 15 not to be connected with retainer ring 14, namely connect between tooth 15 and retainer ring 14 and also have one section of optical axis, connecting the extension bar 4 that tooth 15 can connect hollow, extension bar 4 is fixed on retainer ring 14 place, extension bar 4 can drive depth drill processing work.
The end that cutting portion 13 is positioned at matrix 1 is conical surface shape, two cutting slots 16 of Relative distribution are had at the end opens of cutting portion 13, cutting slot 16 is communicated to chip-removal hole 18, guide pad 3 is arranged on the outer peripheral face of cutting portion 13, guide pad 3 has two pieces, comprise the first guide pad 31 and the second guide pad 32, the angle of two guide pad 3 centers and matrix 1 axis line is between 90 ~ 120 degree, the outer peripheral face that first guide pad 31 is arranged on matrix 1 is positioned on the extended line of blade 2 line, second guide pad 32 is connected on the outer peripheral face of cutting portion 13, the outer peripheral face of the cutting portion 13 between two cutting slots 16 offers some cooling baths 17, cooling bath 17 is made up of some arc-shaped surfaces intersected continuously, the axis being parallel of cooling bath 17 is in the axis of matrix 1.
The working depth that extension bar 4 can extend depth drill is set, by connecting extension bar 4, reduces the length of depth drill, reducing costs and difficulty of processing; Cooling bath 17 is set, strengthens cooling fluid enters drill bit end flow along cooling bath 17, better reduce the temperature of depth drill, improve the service life of depth drill, reduce the wearing and tearing of depth drill, improve the precision of hole machined; Guide pad 3 is set, the internal diameter of deep hole can be stablized, reduce to add man-hour, beating of depth drill, improve the precision in hole.
Blade 2 is made up of Hardmetal materials, the shapes such as profile parallelogram or triangle, can exchange or change corner cut to use, blade 2 is provided with three pieces of arrangements in " one " word, blade 2 comprises the first cutter head 21, second cutter head 22 and the 3rd cutter head 23, cutting slot 16 comprises the first grooving 161 and the second grooving 162, first cutter head 21 to be arranged on the first grooving 161 and with the axes intersect or tangent of matrix 1, 3rd cutter head 23 to be arranged on the first grooving 161 and the outer peripheral face of outstanding matrix 1, second cutter head 22 is arranged on the regional complementarity or crossing that on the second grooving 162 and region that the second cutter head 22 rotates rotates with the first cutter head 21 and the 3rd cutter head 23, namely the position do not cut to when the first cutter head 21 and the 3rd cutter head 23 machining workpieces is by the second cutter head 22 machining, the minimum tactical diameter of the second cutter head 22 is more than or equal to the maximum rotating diameter of the first cutter head 21, the maximum rotating diameter of the second cutter head 22 is less than or equal to the minimum tactical diameter of the 3rd cutter head 21, first cutter head 21, second cutter head 22 and the 3rd cutter head 23 rotate a circle the complete circle of formation one, chip under first cutter head 21 and the 3rd cutter head 23 cut enters in chip-removal hole 18 along the first grooving 161, chip under second cutter head 22 cuts enters in chip-removal hole 18 along the second grooving 162.
Blade 2 is replaceable, reduces the production cost of enterprise; First cutter head 21 and the 3rd cutter and the second cutter head 22 points are located at the both sides of matrix 1 axis, and during cutting, the cutting force of matrix 1 both sides can be made to balance, and minimizing is beated; Cutting slot 16 is communicated to chip area, chip can be made to enter chip area along cutting slot 16, do not contact the inside of deep hole, and make the surface quality of deep hole good, precision is high.
Described inserts from cemented carbide material is made, described carbide alloy contains metal carbide powders and metal adhesive, described metal carbide powders contains the tungsten carbide of 50-60%, the vanadium carbide of 3-8%, the chromium carbide of 5-12%, the titanium carbide of 3-12%, the niobium carbide of 3-8%, described metal adhesive contains the metallic cobalt powder of 6-10%, the metallic nickel powder of 6-8%.
Table 1: the constituent of embodiment 1-3 cutter head and mass percent thereof
Embodiment 1
Material is taken by the raw material of cutter head Hardmetal materials described in table 1 embodiment 1; the material taken through homogenizer, proceeds to and mixes after nitrogen protects the technical pure ethanolic solution adding raw material cumulative volume 30% under 8 DEG C of environment after dry state premix again to mix under pressure is 80kPa nitrogen circulation environment (nitrogen circulation speed is 1% of replacing nitrogen cumulative volume per minute).The ball milling discharging in 4 hours under the nitrogen environment of 5 DEG C again of mixed wet feed.Material after ball milling is dry under pressure is 20kPa circulating nitrogen gas protection of the environment, and baking temperature is 4 DEG C, 2 hours drying times.Dried material is through the compressing base substrate of isostatic cool pressing.By moulded blank first through being divided into the sintering processes of preheating, pre-burning and sintering three processes, the sintering pressure that inert gas forms 8MPa is passed into during sintering processes, described warm-up phase temperature is 480 DEG C, temperature retention time is 80min, described pre-burning phase temperature is 1220 DEG C, and temperature retention time is 100min, and described sintering phase temperature is 1480 DEG C, temperature retention time is 100min, and described three phases programming rate is 3 DEG C/min.Razor blade stock after sintering is carried out cooling processing: be first cooled to 620 DEG C with 4 DEG C/min speed, insulation 30min; Then 450 DEG C are cooled to 3 DEG C/min speed, insulation 30min; 220 DEG C are cooled to again, insulation 2min with 3 DEG C/min speed; Again with 4 DEG C/min ramp to 350 DEG C, insulation 30min; Be cooled to 220 DEG C with 2 DEG C/min speed again, then with 3 DEG C/min ramp to 550 DEG C, be incubated 2 hours, take out air cooling and get final product.Obtained cutter head is also the SiC coating of 0.3mm by the coated thickness of physical gaseous phase deposition coating method.Through detecting, the hardness of cutter head is 98HRA, and yield strength is 4100N/mm
2, fracture toughness is 13.9MPam
1/2, wear rate reduces by 35%.
Embodiment 2
Material is taken by the raw material of cutter head Hardmetal materials described in table 1 embodiment 2; the material taken through homogenizer, proceeds to and mixes after nitrogen protects the technical pure ethanolic solution adding raw material cumulative volume 30% under 6 DEG C of environment after dry state premix again to mix under pressure is 60kPa nitrogen circulation environment (nitrogen circulation speed is 1% of replacing nitrogen cumulative volume per minute).The ball milling discharging in 3 hours under the nitrogen environment of-8 DEG C again of mixed wet feed.Material after ball milling is dry under pressure is 15kPa circulating nitrogen gas protection of the environment, and baking temperature is-5 DEG C, 1 hour drying time.Dried material is through the compressing base substrate of isostatic cool pressing.By moulded blank first through being divided into the sintering processes of preheating, pre-burning and sintering three processes, the sintering pressure that inert gas forms 7MPa is passed into during sintering processes, described warm-up phase temperature is 480 DEG C, temperature retention time is 50min, described pre-burning phase temperature is 1270 DEG C, and temperature retention time is 50min, and described sintering phase temperature is 1380 DEG C, temperature retention time is 50min, and described three phases programming rate is 5 DEG C/min.Razor blade stock after sintering is carried out cooling processing: be first cooled to 640 DEG C with 3 DEG C/min speed, insulation 40min; Then 460 DEG C are cooled to 3 DEG C/min speed, insulation 40min; 220 DEG C are cooled to again, insulation 2min with 4 DEG C/min speed; Again with 5 DEG C/min ramp to 360 DEG C, insulation 40min; Be cooled to 220 DEG C with 3 DEG C/min speed again, then with 3 DEG C/min ramp to 560 DEG C, be incubated 2 hours, take out air cooling and get final product.Obtained cutter head is also the SiC coating of 0.4mm by the coated thickness of physical gaseous phase deposition coating method.Through detecting, the hardness of cutter head is 99.3HRA, and yield strength is 4120N/mm
2, fracture toughness is 13.95MPam
1/2, wear rate reduces by 35%.
Embodiment 3
Material is taken by the raw material of cutter head Hardmetal materials described in table 1 embodiment 3; the material taken through homogenizer, proceeds to and mixes after nitrogen protects the technical pure ethanolic solution adding raw material cumulative volume 30% under 4 DEG C of environment after dry state premix again to mix under pressure is 50kPa nitrogen circulation environment (nitrogen circulation speed is 1% of replacing nitrogen cumulative volume per minute).The ball milling discharging in 3 hours under the nitrogen environment of-10 DEG C again of mixed wet feed.Material after ball milling is dry under pressure is 10kPa circulating nitrogen gas protection of the environment, and baking temperature is-5 DEG C, 1 hour drying time.Dried material is through the compressing base substrate of isostatic cool pressing.By moulded blank first through being divided into the sintering processes of preheating, pre-burning and sintering three processes, the sintering pressure that inert gas forms 6MPa is passed into during sintering processes, described warm-up phase temperature is 420 DEG C, temperature retention time is 60min, described pre-burning phase temperature is 1250 DEG C, and temperature retention time is 80min, and described sintering phase temperature is 1450 DEG C, temperature retention time is 80min, and described three phases programming rate is 8 DEG C/min.Razor blade stock after sintering is carried out cooling processing: be first cooled to 650 DEG C with 4 DEG C/min speed, insulation 50min; Then 480 DEG C are cooled to 4 DEG C/min speed, insulation 50min; 230 DEG C are cooled to again, insulation 3min with 4 DEG C/min speed; Again with 6 DEG C/min ramp to 380 DEG C, insulation 50min; Be cooled to 230 DEG C with 4 DEG C/min speed again, then with 4 DEG C/min ramp to 580 DEG C, be incubated 3 hours, take out air cooling and get final product.Obtained cutter head is also the SiC coating of 0.5mm by the coated thickness of physical gaseous phase deposition coating method.Through detecting, the hardness of cutter head is 97.8HRA, and yield strength is 4070N/mm
2, fracture toughness is 13.7MPam
1/2, wear rate reduces by 35%.
Comparative example 1-3 is only with the difference of embodiment 1-3 respectively accordingly: the Metal Phase in cutter head Hardmetal materials only has tungsten carbide and vanadium carbide, and tungsten carbide accounts for the 50-70% of Hardmetal materials, and vanadium carbide accounts for the 15-30% of Hardmetal materials.
Comparative example 4-5 is only with the difference of embodiment 1-3 respectively accordingly: the Binder Phase in cutter head Hardmetal materials only has metallic cobalt, and metallic cobalt accounts for the 12-18% of Hardmetal materials.
Comparative example 6-9 is only with the difference of embodiment 1-3 respectively accordingly: cutter head is directly cooled to room temperature after sintering.
Comparative example 10-12 is only with the difference of embodiment 1-3 respectively accordingly: the non-coating of bit interface.
The product that above embodiment obtains all can find after tested, product of the present invention is in hardness, fracture toughness, yield strength, wear rate all obtains remarkable improvement, meets the instructions for use of alloy cutter, and long service life, wear rate reduces about 35% than existing cutter, effectively extends cutting-tool's used life, and then extends the service life of deep water brill.
The present invention in an initial condition, depth drill is processing work under lathe drives, first cutter head 21, second cutter head 22 and the 3rd cutter head 23 cutting workpiece, cooling fluid enters into cutter head Working position along cooling bath 17, simultaneously the first cutter head 21, second cutter head 22 and the 3rd cutter head 23 cut under chip enter into chip-removal hole 18 along the first grooving 161 and the second grooving 162 in company with cooling fluid respectively, and output to outside deep hole by chip-removal hole 18, guide pad 3 is close on the hole wall of deep hole, the internal diameter of stable hole and reduction vibrations.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. a depth drill, comprise matrix, the some blades being arranged on matrix end and the some guide pads be arranged on the outer peripheral face of matrix, it is characterized in that, described matrix is cylindrical comprises the installation portion connected successively, connecting portion and cutting portion, matrix offers chip-removal hole along axis, described installation portion is provided with the screw-shaped connection tooth that some row are parallel to each other, protrude between described connecting portion and installation portion and be formed with retainer ring, the external diameter of described retainer ring is more than or equal to the external diameter connecting tooth, two cutting slots of Relative distribution are had at the end opens of cutting portion, described cutting slot is communicated to chip-removal hole, described guide pad is arranged on the outer peripheral face of cutting portion, the outer peripheral face of the cutting portion between two cutting slots offers some cooling baths, described cooling bath is parallel to the axis of matrix, wherein, described inserts from cemented carbide material is made, described carbide alloy contains metal carbide powders and metal adhesive, described metal carbide powders contains the tungsten carbide of 50-60%, the vanadium carbide of 3-8%, the chromium carbide of 5-12%, the titanium carbide of 3-12%, the niobium carbide of 3-8%, described metal adhesive contains the metallic cobalt powder of 6-10%, the metallic nickel powder of 6-8%.
2. a kind of depth drill according to claim 1, is characterized in that, described cooling bath is made up of some arc-shaped surfaces intersected continuously.
3. a kind of depth drill according to claim 1 and 2, it is characterized in that, described blade is provided with three pieces and the arrangement in " one " word, comprise the first cutter head, the second cutter head and the 3rd cutter head, described cutting slot comprises the first grooving and the second grooving, described first cutter head to be arranged on the first grooving and with the axes intersect or tangent of matrix, described 3rd cutter head to be arranged on the first grooving and the outer peripheral face of outstanding matrix, and described second cutter head is arranged on the regional complementarity or crossing that on the second grooving and the region that the second cutter head rotates rotates with the first cutter head and the 3rd cutter head.
4. a kind of depth drill according to claim 1, is characterized in that, described cutter head be the raw material of Hardmetal materials compressing through batching mixing, low-temperature protection grinding, cold conditions negative pressure drying, isostatic pressed, sinter and cooling processing obtained; Described sintering is divided into preheating, pre-burning and sintering three processes, described warm-up phase temperature is 420-480 DEG C, temperature retention time is 50-80min, described pre-burning phase temperature is 1220-1270 DEG C, temperature retention time is 50-100min, described sintering phase temperature is 1380-1480 DEG C, and temperature retention time is 50-100min, and described three phases programming rate is 3-8 DEG C/min.
5. a kind of depth drill according to claim 4, it is characterized in that, described batching is mixed into adds the mixing of raw material cumulative volume 30% ethanolic solution again after dry state premix, and it is proceed under 50-80kPa nitrogen circulation environment to mix that described batching is blended in pressure.
6. a kind of depth drill according to claim 4, is characterized in that, described low-temperature protection is ground to the ball milling 3-4 hour discharging under the nitrogen environment of-10--5 DEG C of mixed wet feed.
7. a kind of depth drill according to claim 4, is characterized in that, described cold conditions negative pressure drying is the raw material after being ground by low-temperature protection is dry under 10-20kPa circulating nitrogen gas protection of the environment as pressure, and baking temperature is-5-4 DEG C, drying time 1-2 hour.
8. a kind of depth drill according to claim 4, is characterized in that, described cooling processing be by sintering after razor blade stock be first cooled to 620-650 DEG C with 3-4 DEG C/min speed, insulation 30-50min; Then 450-480 DEG C is cooled to 3-4 DEG C/min speed, insulation 30-50min; 220-230 DEG C is cooled to again, insulation 2-3min with 3-4 DEG C/min speed; Again with 4-6 DEG C/min ramp to 350-380 DEG C, insulation 30-50min; Be cooled to 220-230 DEG C with 2-4 DEG C/min speed again, then with 3-4 DEG C/min ramp to 550-580 DEG C, insulation 2-3 hour, takes out air cooling and get final product.
9. a kind of depth drill according to claim 4, is characterized in that, described bit interface is also coated with the SiC coating that thickness is 0.3-0.5mm.
10. a kind of depth drill according to claim 1 and 2, it is characterized in that, described guide pad has two pieces to comprise the first guide pad and the second guide pad, and the outer peripheral face that the first guide pad is arranged on matrix is positioned on the extended line of blade line, and the second guide pad is connected on the outer peripheral face of cutting portion.
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| CN104741665A (en) * | 2015-03-20 | 2015-07-01 | 山西风雷钻具有限公司 | Mechanical-clamping non-indexable inner embedded knife tool |
| CN104985237A (en) * | 2015-06-29 | 2015-10-21 | 唐萍 | High-strength drill bit |
| CN105057672A (en) * | 2015-07-27 | 2015-11-18 | 常州西利合金工具有限公司 | Machining method for cemented carbide tool |
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| CN108788252A (en) * | 2018-06-21 | 2018-11-13 | 上海电机学院 | A kind of processing method of drilling tool and its looping pit |
| CN112453502A (en) * | 2020-10-30 | 2021-03-09 | 中北大学 | Inner chip removal deep hole drill |
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| CN104741665A (en) * | 2015-03-20 | 2015-07-01 | 山西风雷钻具有限公司 | Mechanical-clamping non-indexable inner embedded knife tool |
| CN104985237A (en) * | 2015-06-29 | 2015-10-21 | 唐萍 | High-strength drill bit |
| CN105057672A (en) * | 2015-07-27 | 2015-11-18 | 常州西利合金工具有限公司 | Machining method for cemented carbide tool |
| CN106925818B (en) * | 2015-12-30 | 2019-07-09 | 成都工具研究所有限公司 | Three sword side set bta deep hole drilling of minor diameter and preparation method thereof |
| CN106925818A (en) * | 2015-12-30 | 2017-07-07 | 成都工具研究所有限公司 | Sword side set bta deep hole drilling of minor diameter three and preparation method thereof |
| CN106618684A (en) * | 2016-12-23 | 2017-05-10 | 昆山源科弘森金属科技有限公司 | Processing method used for small-trauma surgical knife |
| CN106618682A (en) * | 2016-12-23 | 2017-05-10 | 昆山源科弘森金属科技有限公司 | Manufacturing process for medical scalpel |
| CN106618683A (en) * | 2016-12-23 | 2017-05-10 | 昆山源科弘森金属科技有限公司 | Manufacturing method of scalpel |
| CN108098024A (en) * | 2017-12-18 | 2018-06-01 | 中国航发贵州黎阳航空动力有限公司 | A kind of deep hole processing method in High-temperature resistant alloy material |
| CN108356329A (en) * | 2018-02-07 | 2018-08-03 | 成都工具研究所有限公司 | A kind of side set BTA drill bits and its manufacturing method based on hot investment casting structure of the cutter body |
| CN108788252A (en) * | 2018-06-21 | 2018-11-13 | 上海电机学院 | A kind of processing method of drilling tool and its looping pit |
| CN112453502A (en) * | 2020-10-30 | 2021-03-09 | 中北大学 | Inner chip removal deep hole drill |
| CN112453503A (en) * | 2020-10-30 | 2021-03-09 | 中北大学 | Hole machining spray-suction drilling system and drill bit thereof |
| CN112589153A (en) * | 2020-10-30 | 2021-04-02 | 中北大学 | Spraying and sucking type hole machining method |
| CN112589149A (en) * | 2020-10-30 | 2021-04-02 | 中北大学 | Inner chip removal deep hole machining method |
| CN112589149B (en) * | 2020-10-30 | 2024-10-22 | 中北大学 | Inner chip removal deep hole machining method |
| CN112453502B (en) * | 2020-10-30 | 2024-11-08 | 中北大学 | Internal chip removal deep hole drill |
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Effective date of registration: 20231128 Address after: 315599 Haohai Road, Binhai New Area, Economic Development Zone, Fenghua District, Ningbo City, Zhejiang Province Patentee after: Zhejiang rongkexiangyuan Machinery Technology Co.,Ltd. Address before: Building A1, Yujia Industrial Park, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province, 315191 Patentee before: NINGBO RONGKE MAITE NC TOOLS Co.,Ltd. |