CN109048244A - A kind of production method of polycrystal diamond cutter - Google Patents

A kind of production method of polycrystal diamond cutter Download PDF

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Publication number
CN109048244A
CN109048244A CN201811116396.0A CN201811116396A CN109048244A CN 109048244 A CN109048244 A CN 109048244A CN 201811116396 A CN201811116396 A CN 201811116396A CN 109048244 A CN109048244 A CN 109048244A
Authority
CN
China
Prior art keywords
knife handle
blade
diamond cutter
interconnecting piece
polycrystal diamond
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201811116396.0A
Other languages
Chinese (zh)
Inventor
颜炳姜
李伟秋
林松
林一松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Huizhuan Tools Co Ltd
Conprofe Technology Group Co Ltd
Original Assignee
Guangzhou Huizhuan Tools Co Ltd
Conprofe Technology Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Huizhuan Tools Co Ltd, Conprofe Technology Group Co Ltd filed Critical Guangzhou Huizhuan Tools Co Ltd
Priority to CN201811116396.0A priority Critical patent/CN109048244A/en
Publication of CN109048244A publication Critical patent/CN109048244A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/34Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • B23C5/02Milling-cutters characterised by the shape of the cutter
    • B23C5/10Shank-type cutters, i.e. with an integral shaft
    • B23C5/1081Shank-type cutters, i.e. with an integral shaft with permanently fixed cutting inserts 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2210/00Details of milling cutters
    • B23C2210/04Angles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2210/00Details of milling cutters
    • B23C2210/04Angles
    • B23C2210/0485Helix angles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2226/00Materials of tools or workpieces not comprising a metal
    • B23C2226/31Diamond
    • B23C2226/315Diamond polycrystalline [PCD]

Abstract

The present invention provides a kind of production method of polycrystal diamond cutter, prepare knife handle blank, cutter hub, the cutter hub includes interconnecting piece and cutting portion, grinding first is carried out to knife handle blank and forms knife handle, then it connect the knife handle with the interconnecting piece by welding manner, laser ablation finally is carried out to the cutting portion and removes extra material, so that forming blade in cutting portion.The multiple-cutting-edge polycrystal diamond cutter that blade and cutting portion are an integral molding structure can be made, the blade quantity is 28~32, and tread is 0.1~0.3mm, a length of 1~3mm of sword, edge surface roughness are 0.1~0.4 μm.The polycrystal diamond cutter is for can be improved processing efficiency, reducing process time when processing, while the polycrystal diamond cutter wearability is good, long service life, and the product size stability processed is good, quality is high, rejection rate is low.

Description

A kind of production method of polycrystal diamond cutter
Technical field
The invention belongs to machining equipment technical fields, specifically, relating generally to a kind of polycrystal diamond cutter Production method.
Background technique
Diamond cutter have extreme hardness and wearability, high heat conductance, low thermal coefficient of expansion, low-friction coefficient, with it is non- The features such as ferrous metal affinity is small makes it obtain very high machining accuracy and processing efficiency in high-speed cutting.Diamond cutter Processing characteristics be to be determined by the crystal structure of diamond, in diamond crystal, each carbon atom is adjacent with four Carbon atom forms covalent bond, is spatially in positive tetrahedron structure, binding force is high between the carbon atom of this structure, macroscopically Show high hardness.
Currently, diamond cutter mainly has single-crystal diamond, polycrystal diamond cutter, polycrystalline diamond.Due to diamond The directionality of the characteristic of structure, performance is very strong, and single-crystal diamond is easily along its cleavage facial cleft;Polycrystalline diamond is different by being orientated Fine diamond it is grained sintered form, show as isotropy, be not easy along its cleavage facial cleft;Diamond-coated tools pass through Depositing operation is controlled, also can get isotropic diamond coatings, so being not easy along its cleavage facial cleft.
Polycrystal diamond cutter compares with diamond-coated tools, and diamond-coated tools are there are diamond coatings and firmly Matter alloy substrates binding force is weak, between coating and substrate difference of thermal expansion coefficients it is larger and the problems such as generate internal stress, diamond applies In high-speed milling disbonding easily occurs for layer cutter, leads to coating failure;Polycrystal diamond cutter due to be added adhesive, There is no the serious binding force problems of diamond-coated tools, but its hardness and wear-resisting property are poor.
Currently, polycrystal diamond cutter generally uses the polycrystal diamond cutter of single-blade, twolip or four swords to process, due to Cutting output is high, polycrystal diamond cutter is just needed replacing when so being polished to 10~20 products, so that the polycrystalline diamond knife Have that not wear-resisting, service life is short.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of production method of polycrystal diamond cutter is provided, The blade quantity of polycrystal diamond cutter obtained is 28~32, and it is good to be greatly improved processing efficiency, wear-resisting property.
To realize that the above goal of the invention, the present invention provide a kind of polycrystal diamond cutter manufacturing method, include the following steps:
Step 1 prepares knife handle blank, carries out grinding to knife handle blank and forms knife handle;
Step 2 prepares cutter hub, and the cutter hub includes interconnecting piece and cutting portion, and the cutting portion includes end face and the end The peripheral wall of face connection;The knife handle is connect with the interconnecting piece by welding manner;
Step 3 removes extra material to cutting portion progress laser ablation, so that it is recessed that the end face, which is formed intermediate, The annular end face in portion, blade is formed on the annular end face, and the blade extends to described from the inner edge of the annular end face The outer rim of peripheral wall and it is bent camber, forms groove between blade and blade, the tread of the blade is 0.1~0.3mm, recessed Groove depth is 0.1~0.3mm, a length of 1~3mm of sword.
As a further improvement of the above technical scheme, in the step 1, using centreless grinding or peripheral milling to knife handle Blank carries out grinding.
As a further improvement of the above technical scheme, the material of the knife handle blank and the interconnecting piece is tungsten carbide-base Hard alloy.
As a further improvement of the above technical scheme, the material of the cutting portion is polycrystalline diamond.
As a further improvement of the above technical scheme, in the step 2, the welding manner includes the following steps:
Step 21 carries out sanding and polishing to the welding surface of the knife handle and the interconnecting piece respectively and reaches default roughness;
Step 22 encloses soldering paste to the welding surface after the knife handle and the interconnecting piece sanding and polishing and will be described respectively The welding surface of knife handle and the interconnecting piece links together, and is then consolidated using fixture to the knife handle and the interconnecting piece It is fixed;
The knife handle fixed and cutter hub are placed in vacuum brazing stove progress vacuum brazing by step 23.
As a further improvement of the above technical scheme, in step 21, the default roughness Ra is at 0.1~0.4 μm Between.
As a further improvement of the above technical scheme, in step 23, when carrying out vacuum brazing, welding temperature is 600 DEG C -700 DEG C, when welding a length of 2-3 hour.
As a further improvement of the above technical scheme, in step 3, cutting portion formed blade quantity be 28~ 32.
As a further improvement of the above technical scheme, the spiral angle of the blade is 25~35 °.
As a further improvement of the above technical scheme, the edge surface roughness of the blade is 0.1~0.4 μm.
The present invention provides a kind of polycrystal diamond cutter, and the cutter hub includes interconnecting piece and cutting portion, and the cutting portion is logical The interconnecting piece is crossed to connect with the knife handle;The cutting portion includes the end face of annular and the peripheral wall that connect with the end face, Blade is formed on the end face, the blade extends to the outer rim of the peripheral wall from the inner edge of the end face and bends to arc Shape;The quantity of the blade is 28~32, in vortex shape is arranged on end face.
As a further improvement of the above technical scheme, the spiral angle of the blade is 25~35 °.
As a further improvement of the above technical scheme, the width of the blade is 0.1~0.3mm.
As a further improvement of the above technical scheme, groove, the depth of the groove are formed between the adjacent blade Degree is 0.1~0.3mm.
As a further improvement of the above technical scheme, the length of the blade is 1~3mm.
As a further improvement of the above technical scheme, the edge surface roughness of the blade is 0.1~0.4 μm.
As a further improvement of the above technical scheme, the manufacture material of the knife handle includes tungsten carbide base carbide alloy.
As a further improvement of the above technical scheme, the manufacture material of the interconnecting piece includes that tungsten carbide-base hard closes Gold.
As a further improvement of the above technical scheme, the manufacture material of the cutting portion includes polycrystalline diamond.
As a further improvement of the above technical scheme, the manufacture material of the interconnecting piece includes that tungsten carbide-base hard closes Gold.
As a further improvement of the above technical scheme, the connection type of the knife handle and interconnecting piece is to pass through vacuum brazing Welding.
Beneficial effects of the present invention:
A kind of production method of polycrystal diamond cutter, prepares knife handle blank, cutter hub, and the cutter hub includes interconnecting piece and cut Portion is cut, grinding first is carried out to knife handle blank and forms knife handle, the knife handle and the interconnecting piece are then made by welding manner Connection finally carries out laser ablation to the cutting portion and removes extra material, so that forming blade in cutting portion.It is obtained poly- Its blade of diamond cutter is an integral molding structure with cutting portion, and the blade quantity is 28~32, between vortex shape ground Every being arranged on end face, tread is 0.1~0.3mm, a length of 1~3mm of sword, edge surface roughness are 0.1~0.4 μm.It is described Polycrystal diamond cutter is multiple-cutting-edge polycrystal diamond cutter, when processing efficiency can be improved when it is used to process, reducing processing Between, while the polycrystal diamond cutter wearability is good, long service life, the product size stability processed is good, quality is high, useless Product rate is low.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of the scope of the invention.
Fig. 1 is a kind of side schematic view of polycrystal diamond cutter of the invention;
Fig. 2 is a kind of structural schematic diagram of the cutting portion of polycrystal diamond cutter of the invention.
Main element symbol description:
10, cutting portion;20, interconnecting piece;30, knife handle;110, blade;120, groove;130, recess portion.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
The component of the embodiment of the present invention being described and illustrated herein in the accompanying drawings can be arranged with a variety of different configurations And design.Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Hereinafter, term " includes ", " having " and its cognate that can be used in various embodiments of the present invention are only It is intended to mean that special characteristic, number, step, operation, the combination of element, component or aforementioned item, and is understood not to first Exclude the combined presence or increase by one of one or more other features, number, step, operation, element, component or aforementioned item A or more feature, number, step, operation, element, component or aforementioned item combination a possibility that.
In various embodiments of the present invention, statement " A or/and B " includes any combination or the institute of the text listed file names with There is combination, it may include A, may include B or may include A and B both.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", " transverse direction ", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention System.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply relatively heavy The property wanted.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiment or examples in can be combined in any suitable manner.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection, the connection being also possible to inside two elements, can be directly It is connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can be as the case may be Understand the concrete meaning of above-mentioned term.Unless otherwise defined, otherwise all terms used herein (including technical term and section Technics) there is meaning identical with the normally understood meaning of various embodiments of the present invention one skilled in the art. The term (term such as limited in the dictionary generally used) be to be interpreted as with in the related technical field The identical meaning of situational meaning and it will be interpreted as having Utopian meaning or meaning too formal, unless in this hair It is clearly defined in bright various embodiments.
Fig. 1 and Fig. 2, a kind of polycrystal diamond cutter, including cutter hub and knife handle 30 are please referred to, the cutter hub includes interconnecting piece 20 are connect by the interconnecting piece 20 with the knife handle 30 with cutting portion 10, the cutting portion 10;The cutting portion 10 includes ring The end face of shape and the peripheral wall connecting with the end face, are formed with blade 110 on the end face, and the blade 110 is from the end The inner edge in face extends to the outer rim of the peripheral wall and is bent camber;The quantity of the blade 110 is 28~32, in vortex It is arranged on end face to shape.
In the processing of traditional glass, ceramics, ceramic tile and stone material, the plycrystalline diamond of single-blade, twolip or four swords is generally used Diamond cutter is processed, and machining accuracy is low, and polycrystal diamond cutter service life is short.In the present embodiment, described Polycrystal diamond cutter use 28~32 sword polycrystal diamond cutters, be averaged single-blade cutting output compared to single-blade, twolip or 110 cutting output of blade of four swords is less, and cutting output is directly proportional to the wear intensity of polycrystal diamond cutter, so in this embodiment party The service life is longer for polycrystal diamond cutter in formula, high in machining efficiency;At the same time, the annular end face is centrally formed recessed Portion 130, the design of the recess portion 130, so that the polycrystal diamond cutter will not be to production when processing to product Product cause to wear so that product surface roughness increases.
Preferably, the quantity of the blade 110 is 30.
Optionally, groove 120 is formed between the adjacent blade 110, the depth of the groove 120 is 0.1~ 0.3mm.The setting of the groove 120 is mainly used for chip removal when polycrystal diamond cutter converted products, and the depth of groove 120 is 0.1~0.3mm makes chip removal smooth, and when machining is lighter.
Optionally, the edge surface roughness of the blade 110 is 0.1~0.4 μm.Edge surface roughness it is too big or Too small all polycrystal diamond cutter to be caused not wear-resisting, in the present embodiment, the edge surface roughness of the blade 110 is set It is set to 0.1~0.4 μm, so that the polycrystal diamond cutter wear resistance is high, using the polycrystal diamond cutter converted products, is added Product surface roughness after work is low, high yield rate.
Optionally, the length of the blade 110 can be 1~3mm.
Optionally, the spiral angle of the blade 110 can be 25~35 °.
Optionally, the width of the blade 110 can be 0.1~0.3mm.
The spacing of multiple-cutting-edge polycrystal diamond cutter designed between the shape that consider blade 110, blade 110, blade 110 Angle.Other are contemplated that the mechanical strength of blade 110, wear resistance, the depth etc. of slot.In the present embodiment, blade 110 angles, groove depth, sword is long, and tread is all the key parameter to form 28~32 sword polycrystal diamond cutters.It is repeatedly anti-through inventor Retrial is issued after examination and approval now, when the spiral angle of the blade 110 of 28~32 sword polycrystal diamond cutter is 25~35 °, blade 110 Width is 0.1~0.3mm, the sword of blade 110 is grown in 1~3mm, and blade 110 is with thermal conductivity is good, wear resistance is high, the service life Long feature.When processing glass with 28~32 sword polycrystal diamond cutters or when other materials, machining stress is small, using more Easily, the product size stability processed is good, rejection rate is low, product machined surface roughness is good, while being greatly improved and adding Work efficiency rate.
Optionally, the manufacture material of the knife handle 30 includes tungsten carbide base carbide alloy.
Optionally, the manufacture material of the interconnecting piece 20 includes tungsten carbide base carbide alloy.
Optionally, the connection type of the knife handle 30 and interconnecting piece 20 is to be welded by vacuum brazing.Since welding occurs Between knife handle 30 and interconnecting piece 20, the manufacture material of the knife handle 30 and interconnecting piece 20 is tungsten carbide base carbide alloy, is adopted With the butt welding of same material, so that knife handle 30 is close with the welding surface type variable of interconnecting piece 20 when welding, welding stability is good.
Hard alloy is to make powder made of binder sintering with cobalt, molybdenum, nickel by hardness and all very high carbide of fusing point Control golden product.Its room temperature hardness is resistant to 85~1000 DEG C, cutting speed is 4~10 times high than high-speed steel up to 78~82HRC. Tungsten carbide makes the raw material of hard alloy family, is black hexagonal, there is metallic luster, and hardness is close with diamond, for electricity, heat Good conductor, pure tungsten carbide is frangible, if mixing the metals such as a small amount of titanium, cobalt, can be reduced brittleness, while chemical property is stablized. In general, tungsten carbide crystal grain degree is smaller when cobalt content is identical, hardness is bigger, wearability is better, but bending strength, tough Property relative reduction, in addition, cobalt content is bigger when other conditions are constant, the toughness of material is better, but hardness relative reduction.
Optionally, the quality percentage amounts of cobalt are 3~12% in the Talide.
In the present embodiment, the quality percentage amounts of cobalt are 12% in the Talide.The tungsten carbide is hard The grain size of matter alloy is 0.4 μm, hardness HRA92.5, density 14.10g/cm3, bending strength 4200N/mm2
Optionally, the manufacture material of the cutting portion 10 includes polycrystalline diamond, and grinding performance is good, is not likely to produce surface It scratches.
Polycrystalline diamond (PCD) is to be made using unique directional blasting method by graphite, detonating explosive directional blasting Shock wave makes metal film flying accelerate flight, hits graphite flake so as to cause graphite and is converted into polycrystalline diamond.Polycrystalline diamond by It is orientated that different fine diamond is grained sintered to be formed, shows as isotropy, be not easy that there is excellent mill along its cleavage facial cleft Performance is cut, compared with single-crystal diamond, it is not easy to generate surface scratching.
A kind of manufacturing method of polycrystal diamond cutter, can get polycrystal diamond cutter as described above, including as follows Step:
Step 1 prepares knife handle blank, carries out grinding to knife handle blank and forms knife handle 30;
Step 2 prepares cutter hub, and the cutter hub includes interconnecting piece 20 and cutting portion 10, the cutting portion 10 include end face and The peripheral wall of the end face connection;The knife handle 30 is connect with the interconnecting piece 20 by welding manner;
Step 3 carries out laser ablation to the cutting portion 10 and removes extra material, so that the end face forms centre is The annular end face of recess portion 130, is formed with blade 110 on the annular end face, and the blade 110 is from the inner edge of the annular end face It extends to the outer rim of the peripheral wall and is bent camber, form groove 120, the blade between blade 110 and blade 110 110 tread is 0.1~0.3mm, 120 depth of groove is 0.1~0.3mm, a length of 1~3mm of sword.
In the application for convenience, the describing mode for using step 1, step 2 ..., it is not intended that this hair Bright manufacturing method needs are executed in strict accordance with step number, and those skilled in the art can according to need for some steps Sequence carries out adjustment appropriate.For example, the preparation knife handle blank of step 1 and the preparation cutter hub of step 2 can in the present embodiment To execute operation in no particular order.
Optionally, in step 1, the knife handle blank selects tungsten carbide base carbide alloy, and carbon is formed after grinding Change the knife handle 30 of tungsten based hard alloy material.
Optionally, in the step 1, grinding is carried out to knife handle blank using centreless grinding or peripheral milling.
The knife handle blank can get basic shaft system after grinding and preset precision.In the present embodiment, 30 base of knife handle Axis is made as h6.
In the present embodiment, cylindricalo grinding is selected to be processed the knife handle blank.Cylindricalo grinding generally exists It is carried out on cylindrical grinder, outside cylinder, outer cone and shaft shoulder end face of the cylindricalo grinding to be ground shaft-like workpiece.In present embodiment In, when being ground to knife handle blank, knife handle blank only makees rotary feed, and moves without length feed, and grinding wheel is then continuously made laterally Feed motion, until grinding off the size that whole surpluses reach required.
In other embodiments, centerless grinding is selected to be processed the knife handle blank.Workpiece does not have to top Centering and bearing, and be placed between grinding wheel and guide wheel, it is supported by supporting plate and guide wheel.Grinding wheel high speed rotation is ground, guide wheel With slower speed rotating Vortex, the rotation of knife handle blank is driven to make the size that rotary feed reaches required until grinding off whole surpluses Until.
Optionally, in step 2, the welding manner includes the following steps:
Step 21, the welding surface of the knife handle 30 and the interconnecting piece 20 is carried out respectively sanding and polishing reach preset it is coarse Degree;
Step 22 is enclosed soldering paste with the welding surface after 20 sanding and polishing of interconnecting piece to the knife handle 30 respectively and is incited somebody to action The welding surface of the knife handle 30 and the interconnecting piece 20 links together, then using fixture to the knife handle 30 and the connection Portion 20 is fixed;
The knife handle 30 fixed and cutter hub are placed in vacuum brazing stove progress vacuum brazing by step 23.
In step 21, sanding and polishing is carried out to the welding surface of the knife handle 30 and the interconnecting piece 20 before welding and reaches pre- If roughness, so that the welding surface roughness Ra of the knife handle 30 and the interconnecting piece 20 is no more than 0.4 μm, avoid welding with this When connecing due to knife handle 30 and the interconnecting piece 20 welding surface out-of-flatness and impurity there are problems that lead to poor welding quality.
In step 23, when carrying out vacuum brazing, welding temperature is 600 DEG C -700 DEG C, and when welding is a length of 2-3 small When.
Optionally, sanding and polishing is carried out using welding surface of the surface grinding machine to the knife handle 30 and the interconnecting piece 20.
In the present embodiment, using vacuum brazing.Vacuum brazing refers to that workpiece heating is carried out in vacuum brazing stove, generally The welding of product and oxidizable material for requiring quality high.
Vacuum brazing belongs to solid diffusivity, it is different from fusion welding method, and base material is non-fusible when principle is vacuum brazing, by In using the solder lower than base material fusion temperature, in heating chamber of vacuum brazing furnace heating temperature take lower than base material solidus and Higher than a kind of connection method of solder liquid thick line.
In the present embodiment, when knife handle 30, cutter hub and solder 600 DEG C -700 DEG C of vacuum brazing stove at a temperature of plus Heat, brazing filler metal melts after 2~3 hours, using liquid solder knife handle 30, interconnecting piece 20 welding surface wetting, sprawl with knife handle 30, The material of the welding surface of interconnecting piece 20 is mutually dissolved and spreads and realize the connection between knife handle 30 and the welding surface of interconnecting piece 20. It is smaller that the connection type deforms knife handle 30 with interconnecting piece 20, is easily guaranteed that its dimensional accuracy.
Optionally, the material of the interconnecting piece 20 is tungsten carbide base carbide alloy.
Since welding occurs between the welding surface of knife handle 30 and the welding surface of interconnecting piece 20, simultaneously because the knife handle 30 Material with the interconnecting piece 20 is tungsten carbide base carbide alloy, using the butt welding of same material, so that type variable phase when welding Closely, welding stability is good.
Optionally, the type of cooling is natural air cooling to room temperature after the completion of welding.
Optionally, the material of the cutting portion 10 is polycrystalline diamond.
Optionally, in step 3, processing is performed etching to cutting portion 10 using laser, laser beam is irradiated to cutting portion 10 diamond surface, causes diamond surface to heat up, and makes the diamond being heated that evaporation, gasification or graphitization occur, in turn Remove diamond.Using the characteristic for the high power density that laser focuses, moment diamond surface can be generated small broken Bad, destroyed area is smaller, and the influence to destroyed area adjacent material is also smaller, can form a very smooth destruction area Domain can make smooth, clear-cut, the complex-shaped high-precision polycrystal diamond cutter in surface.
Optionally, using inspire confidence in you write from memory QXD250 processing is performed etching to cutting portion 10.
Optionally, in step 3, the quantity of the blade 110 formed in cutting portion 10 is 28~32.
It is to be cut a monolith diamond compact using Mechanical Method at present in polycrystal diamond cutter traditional machining processes Several pieces of diamond blades are cut into, then the diamond blade of well cutting is soldered on cutter hub, finally using mechanical sharpening method It puts the first edge on a knife or a pair of scissors to polycrystal diamond cutter.
In the present embodiment, processing is performed etching to cutting portion 10 by laser and forms blade 110, so that the blade 110 are an integral molding structure with cutting portion 10, and compared to the blade 110 of welding diamond, plycrystalline diamond in the present embodiment is golden Hard rock cutter has longer service life.
In present embodiment, the polycrystal diamond cutter uses 28~32 sword polycrystal diamond cutters, and be averaged single-blade Cutting output is less compared to 110 cutting output of blade of single-blade, twolip or four swords, and the mill of cutting output and polycrystal diamond cutter Damage degree is directly proportional, so the service life is longer for polycrystal diamond cutter in the present embodiment, it is high in machining efficiency.
Optionally, the edge surface roughness of the blade 110 is 0.1~0.4 μm.It is with 110 coefficient of friction of blade Small feature.When processing glass with 28~32 sword polycrystal diamond cutter or when other materials, the product ruler that processes Very little stability is good, rejection rate is low, product machined surface roughness is good, and at the same time, the annular end face is centrally formed recess portion 130, the design of the recess portion 130, so that the polycrystal diamond cutter will not be to product when processing to product It causes to wear so that product surface roughness increases.
Optionally, the spiral angle of the blade 110 is 25~35 °.
By the above method, the polycrystal diamond cutter produced in converted products its process revolving speed be 10000~ 20000r/min, bite 0.005mm, the hardness of the polycrystalline diamond are 8000HV, thermal coefficient 700W/mk, friction Coefficient is between 0.1~0.3, and thermal expansion coefficient is 0.9 × 10-6~1.18 × 10-6Between, it is carried out when to cell phone screen glass When processing, the processing quantity of single polycrystal diamond cutter is 200~300.
Embodiment 1
A kind of polycrystal diamond cutter manufacturing method, includes the following steps:
Step 1 prepares knife handle blank, carries out grinding using centreless grinding to knife handle blank and forms knife handle 30;
Step 2 prepares cutter hub, and the cutter hub includes interconnecting piece 20 and cutting portion 10, the cutting portion 10 include end face and The peripheral wall of the end face connection;Carrying out sanding and polishing to roughness Ra to the welding surface of the knife handle 30 and the interconnecting piece 20 is Soldering paste is enclosed after 0.4 μm, is subsequently placed in vacuum brazing stove, is 600 DEG C in welding temperature, the item of when welding a length of 3 hours Vacuum brazing is carried out under part;
Step 3 carries out laser ablation to the cutting portion 10 and removes extra material, so that the end face forms centre is The annular end face of recess portion 130, is formed with blade 110 on the annular end face, and the blade 110 is from the inner edge of the annular end face It extends to the outer rim of the peripheral wall and is bent camber, form groove 120, the blade between blade 110 and blade 110 110 quantity is 28.
Specifically, the making material of the knife handle 30 and interconnecting piece 20 includes tungsten carbide base carbide alloy, the cutting portion 10 manufacture material includes polycrystalline diamond.
Specifically, the spiral angle of the blade 110 is 30 °.
Specifically, the width of the blade 110 is 0.2mm.
Specifically, forming groove 120 between the adjacent blade 110, the depth of the groove 120 is 0.2mm.
Specifically, the length of the blade 110 is 2mm.
Specifically, the edge surface roughness of the blade 110 is 0.25 μm.
Test group is arranged to test polycrystal diamond cutter performance in embodiment, test item includes that processing turns (test to wear resistance is with the plycrystalline diamond for speed, bite, hardness, thermal coefficient, coefficient of friction, thermal expansion coefficient, wear-resisting property Diamond cutter processes mobile phone glass screen, the quantity that single cutter is capable of processing);Control group is set simultaneously, is compareed Group is consistent with test group for welding type cutter and hard alloy cutter, other conditions common on the market.Test group and control group Respectively choose 10 test samples carry out test be averaged subject to, measurement data such as following table.
The test data of 1 embodiment 1 of table records result
By data in table 1 it is found that compared to welding type cutter and hard alloy cutter, plycrystalline diamond Buddha's warrior attendant in the present embodiment Stone cutter thermal conductivity is more preferable, wear resistance is higher, process velocity is fast.
Embodiment 2
A kind of polycrystal diamond cutter manufacturing method, includes the following steps:
Step 1 prepares knife handle blank, carries out grinding using peripheral milling to knife handle blank and forms knife handle 30;
Step 2 prepares cutter hub, and the cutter hub includes interconnecting piece 20 and cutting portion 10, the cutting portion 10 include end face and The peripheral wall of the end face connection;Sanding and polishing to roughness Ra is carried out to the welding surface of the knife handle 30 and the interconnecting piece 20 to exist Soldering paste is enclosed after 0.2 μm, is subsequently placed in vacuum brazing stove, is 700 DEG C in welding temperature, the item of when welding a length of 2 hours Vacuum brazing is carried out under part;
Step 3 carries out laser ablation to the cutting portion 10 and removes extra material, so that the end face forms centre is The annular end face of recess portion 130, is formed with blade 110 on the annular end face, and the blade 110 is from the inner edge of the annular end face It extends to the outer rim of the peripheral wall and is bent camber, form groove 120, the blade between blade 110 and blade 110 110 quantity is 30.
Specifically, the making material of the knife handle 30 and interconnecting piece 20 includes tungsten carbide base carbide alloy, the cutting portion 10 manufacture material includes polycrystalline diamond.
Specifically, the spiral angle of the blade 110 is 35 °.
Specifically, the width of the blade 110 is 0.3mm.
Specifically, forming groove 120 between the adjacent blade 110, the depth of the groove 120 is 0.3mm.
Specifically, the length of the blade 110 is 1mm.
Specifically, the edge surface roughness of the blade 110 is 0.1 μm.
Test group is arranged to test polycrystal diamond cutter performance in the present embodiment, test item includes processing (test to wear resistance is poly- with this for revolving speed, bite, hardness, thermal coefficient, coefficient of friction, thermal expansion coefficient, wear-resisting property Diamond cutter processes mobile phone glass screen, the quantity that single cutter is capable of processing);Control group is set simultaneously, it is right It is consistent with test group for welding type cutter and hard alloy cutter, other conditions common on the market according to group.Test group with compare Group 10 test samples of each selections carry out test be averaged subject to, measurement data such as following table.
The test data of 2 embodiment 2 of table records result
By data in table 2 it is found that compared to welding type cutter and hard alloy cutter, plycrystalline diamond Buddha's warrior attendant in the present embodiment Stone cutter thermal conductivity is more preferable, wear resistance is higher, process velocity is fast.
Embodiment 3
A kind of polycrystal diamond cutter manufacturing method, includes the following steps:
Step 1 prepares knife handle blank, carries out grinding using peripheral milling to knife handle blank and forms knife handle 30;
Step 2 prepares cutter hub, and the cutter hub includes interconnecting piece 20 and cutting portion 10, the cutting portion 10 include end face and The peripheral wall of the end face connection;Sanding and polishing to roughness Ra is carried out to the welding surface of the knife handle 30 and the interconnecting piece 20 to exist Soldering paste is enclosed after 0.3 μm, is subsequently placed in vacuum brazing stove, is 650 DEG C in welding temperature, when welding a length of 2.5 hours Under the conditions of carry out vacuum brazing;
Step 3 carries out laser ablation to the cutting portion 10 and removes extra material, so that the end face forms centre is The annular end face of recess portion 130, is formed with blade 110 on the annular end face, and the blade 110 is from the inner edge of the annular end face It extends to the outer rim of the peripheral wall and is bent camber, form groove between blade 110 and blade 110, the blade 110 Quantity is 32.
Specifically, the making material of the knife handle 30 and interconnecting piece 20 includes tungsten carbide base carbide alloy, the cutting portion 10 manufacture material includes polycrystalline diamond.
Specifically, the spiral angle of the blade 110 is 25 °.
Specifically, the width of the blade 110 is 0.1mm.
Specifically, forming groove 120 between the adjacent blade 110, the depth of the groove 120 is 0.1mm.
Specifically, the length of the blade 110 is 3mm.
Specifically, the edge surface roughness of the blade 110 is 0.4 μm.
Test group is arranged to test polycrystal diamond cutter performance in the present embodiment, test item includes processing (test to wear resistance is poly- with this for revolving speed, bite, hardness, thermal coefficient, coefficient of friction, thermal expansion coefficient, wear-resisting property Diamond cutter processes mobile phone glass screen, the quantity that single cutter is capable of processing);Control group is set simultaneously, it is right It is consistent with test group for welding type cutter and hard alloy cutter, other conditions common on the market according to group.Test group with compare Group 10 test samples of each selections carry out test be averaged subject to, measurement data such as following table.
The test data of 3 embodiment 3 of table records result
From the data in table 3, compared to welding type cutter and hard alloy cutter, plycrystalline diamond Buddha's warrior attendant in the present embodiment Stone cutter thermal conductivity is more preferable, wear resistance is higher, process velocity is fast.
In all examples being illustrated and described herein, any occurrence should be construed as merely illustratively, without It is as limitation, therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

Claims (10)

1. a kind of manufacturing method of polycrystal diamond cutter, which comprises the steps of:
Step 1 prepares knife handle blank, carries out grinding to knife handle blank and forms knife handle;
Step 2 prepares cutter hub, and the cutter hub includes interconnecting piece and cutting portion, and the cutting portion includes that end face and the end face connect The peripheral wall connect;The knife handle is connect with the interconnecting piece by welding manner;
Step 3 removes extra material to cutting portion progress laser ablation, so that it is recess portion that the end face, which is formed intermediate, Annular end face is formed with blade on the annular end face, and the blade extends to the peripheral wall from the inner edge of the annular end face Outer rim and be bent camber, form groove between blade and blade, the tread of the blade is 0.1~0.3mm, groove is deep Degree is 0.1~0.3mm, a length of 1~3mm of sword.
2. the manufacturing method of polycrystal diamond cutter according to claim 1, which is characterized in that in the step 1, adopt Grinding is carried out to knife handle blank with centreless grinding or peripheral milling.
3. the manufacturing method of polycrystal diamond cutter according to claim 1, which is characterized in that the knife handle blank and institute The material for stating interconnecting piece is tungsten carbide base carbide alloy.
4. the manufacturing method of polycrystal diamond cutter according to claim 1, which is characterized in that the material of the cutting portion For polycrystalline diamond.
5. the manufacturing method of polycrystal diamond cutter according to claim 1, which is characterized in that described in the step 2 Welding manner includes the following steps:
Step 21 carries out sanding and polishing to the welding surface of the knife handle and the interconnecting piece respectively and reaches default roughness;
Step 22 encloses soldering paste to the welding surface after the knife handle and the interconnecting piece sanding and polishing and by the knife handle respectively It links together with the welding surface of the interconnecting piece, then the knife handle and the interconnecting piece is fixed using fixture;
The knife handle fixed and cutter hub are placed in vacuum brazing stove progress vacuum brazing by step 23.
6. the manufacturing method of polycrystal diamond cutter according to claim 5, which is characterized in that described in step 21 Default roughness Ra is between 0.1~0.4 μm.
7. the manufacturing method of polycrystal diamond cutter according to claim 5, which is characterized in that in step 23, into When row vacuum brazing, welding temperature is 600 DEG C -700 DEG C, when welding a length of 2-3 hour.
8. the manufacturing method of polycrystal diamond cutter according to claim 1, which is characterized in that in step 3, cutting The quantity for the blade that portion is formed is 28~32.
9. the manufacturing method of polycrystal diamond cutter according to claim 1, which is characterized in that the helical angle of the blade Degree is 25~35 °.
10. the manufacturing method of polycrystal diamond cutter according to claim 1, which is characterized in that the cutting edge of the blade Surface roughness is 0.1~0.4 μm.
CN201811116396.0A 2018-09-25 2018-09-25 A kind of production method of polycrystal diamond cutter Withdrawn CN109048244A (en)

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CN113732366A (en) * 2021-08-26 2021-12-03 中国工程物理研究院激光聚变研究中心 Ultrasonic vibration machining tool for inner wall of deep small hole and preparation method thereof

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CN110181239A (en) * 2019-05-23 2019-08-30 东莞联阳切削工具有限公司 A kind of PCD dock cutter making technique
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CN111267189A (en) * 2020-03-31 2020-06-12 梧州市三禾添佰利五金加工有限公司 Woodworking milling cutter and machining method thereof
CN111570944A (en) * 2020-04-16 2020-08-25 深圳大学 Manufacturing method of integrated PCD milling cutter head
CN111570944B (en) * 2020-04-16 2021-08-24 深圳大学 Manufacturing method of integrated PCD milling cutter head
CN113732366A (en) * 2021-08-26 2021-12-03 中国工程物理研究院激光聚变研究中心 Ultrasonic vibration machining tool for inner wall of deep small hole and preparation method thereof

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