CN108942131A - The processing method of milling cutter - Google Patents
The processing method of milling cutter Download PDFInfo
- Publication number
- CN108942131A CN108942131A CN201811116418.3A CN201811116418A CN108942131A CN 108942131 A CN108942131 A CN 108942131A CN 201811116418 A CN201811116418 A CN 201811116418A CN 108942131 A CN108942131 A CN 108942131A
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- China
- Prior art keywords
- cutter head
- cutter
- knife handle
- processing method
- blade
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/34—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/1081—Shank-type cutters, i.e. with an integral shaft with permanently fixed cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
- B23C2210/0485—Helix angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23C2222/28—Details of hard metal, i.e. cemented carbide
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
Abstract
The processing method that the present invention discloses a kind of milling cutter, comprising: step 1, production knife handle and cutter head blank；The cutter head blank includes substrate and the polycrystalline diamond layer in the substrate, and the knife handle and the material of the substrate are hard alloy；Step 2 welds together the substrate and the knife handle, so that the knife handle and the cutter head blank be welded together；Step 3 processes the cutter head blank using electrical discharge machining process, form cutter head, to obtain milling cutter, the milling cutter includes cutter head and the knife handle that is fixedly connected with the cutter head, the top surface that the cutter head has side and is connected with the side, the cutter head is equipped with 9-12 blade being distributed relative to the center of the top surface in emitting shape, and the 9-12 blade extends on the side from the top surface, is equipped with cutter groove between every two adjacent blade.The processing method machining accuracy of milling cutter of the invention is higher, simple process, and processing cost is low.
Description
Technical field
The present invention relates to field of machining more particularly to a kind of processing methods of milling cutter.
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 (MCD) cutter, polycrystalline diamond (PCD) cutter and diamond
Coated cutting tool.Due to the characteristic of diamond lattic structure, the directionality of performance is very strong, and single-crystal diamond is easily along its cleavage facial cleft；
Polycrystalline diamond is formed by the different fine diamond of orientation is grained sintered, is shown as isotropy, is not easy along its cleavage facial cleft；
Diamond-coated tools also can get isotropic diamond coatings, so being not easy along its cleavage by controlling depositing operation
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 the substrate difference of thermal expansion coefficients it is larger and the problems such as generate internal stress, Buddha's warrior attendant
In high-speed milling disbonding easily occurs for stone coated cutting tool, leads to coating failure；Diamond is not present in polycrystal diamond cutter
The serious binding force problem of coated cutting tool, but there are problems that complicated shape is difficult to.
Summary of the invention
The purpose of the present invention is to provide a kind of processing methods of milling cutter, and machining accuracy is higher, and processing technology is simple, processing
It is at low cost.
To realize that the above goal of the invention, the present invention provide a kind of processing method of milling cutter, include the following steps:
Step 1, production knife handle and cutter head blank；The cutter head blank includes substrate and the plycrystalline diamond in the substrate
The material of diamond layer, the knife handle and the substrate is hard alloy；
Step 2 welds together the substrate and the knife handle, so that the knife handle and the cutter head blank be welded
Together；
Step 3 processes the cutter head blank using electrical discharge machining process, forms cutter head, so that milling cutter is obtained,
The milling cutter includes cutter head and the knife handle that is fixedly connected with the cutter head, the cutter head have side and with the side phase
Top surface even, the cutter head are equipped with 9-12 blade being distributed relative to the center of the top surface in emitting shape, the 9-12
A blade extends on the side from the top surface, is equipped with cutter groove between every two adjacent blade.
Optionally, the cutter head and knife handle are cylindrical, and the step 1 includes: to the knife handle and the cutter head hair
Base executes the operation of cylindrical grinding diameter.
Optionally, in the step 2, before welding together the knife handle and the cutter head blank, plane is used
Grinding machine carries out sanding and polishing to the welding surface of the welding surface of the substrate and the knife handle, after polishing the welding surface of the substrate with
The roughness Ra of the welding surface of the knife handle is no more than 0.4 μm.
Optionally, in the step 2, when being welded to the knife handle and the cutter head blank, first in the knife handle
Welding surface and the cutter head blank welding surface coat soldering paste, and using welding fixture to the knife handle and the cutter head hair
Base is fixed, and the knife handle and the cutter head blank are then placed in vacuum brazing stove at 600 DEG C -700 DEG C and welded,
Weld interval is 2-3 hour.
Optionally, in the shape of a spiral, the helical angle of the blade is 15 ° -30 ° to the 9-12 blade；The cutter groove
Anterior angle is 3 ° -12 °.
Optionally, the length of the cutter groove is 3mm-7mm；The depth of the cutter groove is 1mm-2mm.
Optionally, the tread of the blade is 0.05mm-0.8mm.
Optionally, the shape of the blade is triangle or trapezoidal.
Optionally, the hard alloy is tungsten carbide base carbide alloy.
Optionally, the processing method of milling cutter of the invention further include: step 4, using laser processing technology in the cutter head
Top center region formed groove, the blade and cutter groove are uniformly distributed along the periphery of the groove.
Beneficial effects of the present invention: the processing method of milling cutter provided by the invention forms cutter head using electrical discharge machining process
On blade and cutter groove, machining accuracy is higher, and processing technology is simple, and processing cost is low.The milling cutter that the processing method obtains is 9-
12 sword PCD knives, compared with existing common PCD knife, the service life is longer for milling cutter of the invention, and the rejection rate of workpieces processing is more
It is low；In addition, milling cutter of the invention also has many advantages, such as that high in machining efficiency, wearability is good, coefficient of friction is small, thermal coefficient is high.
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 the flow chart of one embodiment of processing method of milling cutter of the invention；
Fig. 2 is the schematic front view of milling cutter made from the processing method of milling cutter of the invention；
Fig. 3 is the schematic side view of milling cutter made from the processing method of milling cutter of the invention；
Fig. 4 is the stereoscopic schematic diagram of milling cutter made from the processing method of milling cutter of the invention.
Main element symbol description:
10- cutter head；
20- knife handle；
11- blade；
12- cutter groove；
13- groove；
The top surface 31-；
The side 32-.
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 embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, requirement is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
The scope of the present invention of protection, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, this field skill
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
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.
Referring to Fig. 1, the present invention provides a kind of processing method of milling cutter simultaneously refering to Fig. 2 to Fig. 4, include the following steps:
Step 1, production knife handle 20 and cutter head blank；The cutter head blank includes substrate and gathering in the substrate
Diamond layer, the knife handle 20 and the material of the substrate are hard alloy；
Step 2 welds together the substrate and the knife handle 20, thus by the knife handle 20 and the cutter head blank
Weld together；
Step 3 processes the cutter head blank using electrical discharge machining process, cutter head 10 is formed, to be milled
Knife, please see Fig. 2 to Fig. 4, the milling cutter include cutter head 10 and the knife handle 20 that is fixedly connected with the cutter head 10, the cutter head
10 are equipped with side 32 and the top surface 31 being connected with the side 32, the cutter head 10 relative in the top surface 31
The heart is in the 9-12 blade 11 of emitting shape distribution, and the 9-12 blade 11 extends to the side 32 from the top surface 31
On, cutter groove 12 is equipped between every two adjacent blade 11.
The mode of traditional grinding polycrystalline diamond cutter head is only capable of processing the insert shape of simple geometry profile, very
Difficulty processes part with complex shape, and the present invention processes cutter head blank by the way of electrical discharge machining, can
The characteristics of complicated cutter head shape of acquisition, electrical discharge machining is quick-fried using the pulse discharging energy of high concentration, powerful electric discharge
Bursting force makes the metal melt in PCD material, part diamond graphitization and oxidation, part diamond drop-off, the technique of this method
Property is good, high-efficient.
Specifically, the cutter head 10 and knife handle 20 are cylindrical.
Optionally, in the shape of a spiral, the helical angle of the blade 11 is 15 ° -30 ° to the 9-12 blade 11.
Optionally, the anterior angle of the cutter groove 12 is 3 ° -12 °；The anterior angle of the cutter groove 12 fathoms as 0.1mm-
0.5mm。
Optionally, the length of the cutter groove 12 is 3mm-7mm.
Optionally, the depth of the cutter groove 12 is 1mm-2mm.
Optionally, the anterior angle of the cutter groove 12 fathoms as 0.1mm-0.5mm.
Optionally, the tread of the blade 11 is 0.05mm-0.8mm.
Optionally, the surface roughness Ra of the blade 11 is 0.1 μm -0.4 μm.
Optionally, the shape of the blade 11 is triangle or trapezoidal.
Specifically, the substrate and the knife handle 20 need to select suitable cemented carbide material, usually selection tungsten carbide
Base cemented carbide, it is however generally that, when cobalt content is identical, tungsten carbide crystal grain degree is smaller, and hardness is bigger, wearability is better, still
Bending strength, toughness relative reduction, in addition, cobalt content is bigger when other conditions are constant, the toughness of material is better, but hardness
Relative reduction, specifically how to select material optionally for, the hard that heretofore described substrate and the knife handle 20 are selected closes
Gold is tungsten carbide base carbide alloy, and wherein the quality percentage amounts of cobalt are no more than 12%, and grain size is 0.4 μm.
Specifically, the step 1 includes: to the knife handle 20 and institute when the cutter head 10 and cylindrical knife handle 20
It states cutter head blank and executes the operation of cylindrical grinding diameter.
Specifically, when the diameter of the knife handle 20 and the cutter head blank is 3mm-16mm, using centreless grinding equipment pair
The knife handle 20 executes the operation of cylindrical grinding diameter with the cutter head blank；
When the diameter of the knife handle 20 and the cutter head blank is greater than 16mm, using peripheral milling equipment to the knife handle 20
The operation of cylindrical grinding diameter is executed with the cutter head blank.
Optionally, the processing method of milling cutter of the invention further include:
Step 4 forms groove 13, the blade 11 in the top center region of the cutter head 10 using laser processing technology
It is uniformly distributed with cutter groove 12 along the periphery of the groove 13.
When the cutting element is used for workpieces processing, the groove 13 can be avoided the top center area of the cutter head 10
The region processed on the end face in domain and workpiece to be machined, which contacts, causes the surface roughness in machined region to increase.
Optionally, the groove 13 is rounded.
Specifically, in the step 2, before welding together the knife handle 20 with the cutter head blank, using flat
Face grinding machine carries out sanding and polishing, the welding of the substrate after polishing to the welding surface of the substrate and the welding surface of the knife handle 20
The roughness Ra of the welding surface of face and the knife handle 20 is no more than 0.4 μm, is avoided with this due to welding surface out-of-flatness and miscellaneous
There is caused poor welding quality in matter.
Specifically, in the step 2, when being welded to the knife handle 20 with the cutter head blank, first in the knife
The welding surface of the welding surface of handle 20 and the cutter head blank coats soldering paste, and using welding fixture to the knife handle 20 with it is described
Cutter head blank is fixed, and the knife handle 20 is then placed in vacuum brazing stove in 600 DEG C of -700 DEG C of (examples with the cutter head blank
Such as 600 DEG C, 620 DEG C, 640 DEG C, 660 DEG C, 680 DEG C, 700 DEG C) under welded, weld interval be 2-3 hour, then adopt
It is cooled to room temperature with the natural air cooling type of cooling.
Specifically, in the step 3, using inspire confidence in you write from memory QXD250 spark discharge machining tool to the cutter head blank into
Row electrical discharge machining obtains required complex appearance.
The processing method of above-mentioned milling cutter forms blade 11 and cutter groove 12 on the cutter head 10 using electrical discharge machining process,
Machining accuracy is higher, and processing technology is simple, and processing cost is low.The milling cutter that the processing method obtains is 9-12 sword PCD knife, and existing
Common PCD knife compare, the service life is longer for milling cutter of the invention, and the rejection rate of workpieces processing is lower；In addition, of the invention
Milling cutter also has many advantages, such as that high in machining efficiency, wearability is good, coefficient of friction is small, thermal coefficient is high.
Between the design of multiple-cutting-edge PCD knife usually requires between the shape (triangle, trapezoidal etc.) in view of blade 11, blade 11
Away from, blade 11 angle (two-point method: 11 top end point A of blade, 11 lower end of blade point B, center of circle O, angle is ∠ OAB, AB and OA
Angle), it is contemplated that (cutter groove 12 is deeper, and mechanical strength is got over for the depth of the mechanical strength of blade 11, wear resistance, cutter groove 12
It is low, and cutter groove 12 may shallowly interfere with very much processing effect).The present invention has comprehensively considered multiple design elements of multiple-cutting-edge PCD knife, system
A kind of cutting tool for designing reasonable, mechanical strength and wear resistance is higher and processing effect is excellent is made.
Using common single-blade, twolip, four sword PCD knives processing glass or ceramics when, due in process cutter can under
Pressure is easy crushing glass or ceramics, causes rejection rate higher, in addition the service life of common PCD knife is relatively low.Present invention production
A kind of 9-12 sword PCD knife, 9-12 sword PCD knife monodentate cutting output compared with common PCD knife is less, since scrap rate determines
Blade 11 and wear of work amount, therefore the workpiece processed relative to common PCD knife, 9-12 sword PCD knife of the invention is thick
Rugosity is substantially reduced.Also, for common PCD knife, the service life of 9-12 sword PCD knife of the invention is more long, commonly
The service life of PCD knife is usually ten to 20 workpiece of polishing, and the service life of 9-12 sword PCD knife of the invention can
Reach several hundred workpiece of polishing.
Specifically, the PCD material that cutting tool of the invention uses has the advantage that
1, the hardness of PCD is 8000HV, is 80 to 120 times of hard alloy；
2, the thermal coefficient of PCD is 700W/mk, is 1.5 to 9 times of hard alloy, therefore PCD cutter heat transfer is fast
Speed；
3, the coefficient of friction of PCD is generally 0.1~0.3, and the coefficient of friction of hard alloy is 0.4~1, therefore PCD knife
Tool is significantly reduced cutting force；
4, the thermal expansion coefficient of PCD is 0.9 × 10-6To 1.18 × 10-6, it is the 1/5 of hard alloy, therefore PCD cutter is warm
Deform small, machining accuracy height.
The above advantage based on PCD material, the milling cutter that the present invention makes for long service life, workpieces processing rejection rate
Low, high in machining efficiency, the advantages that wearability is good, coefficient of friction is small, thermal coefficient is high.It is arrived in processing revolving speed S for 10000
20000r/min, in the case that cutter bite is 0.005mm, milling cutter of the invention is big for processing 5.5 inches of mobile phone screens
Processable 200-300 piece or so when small glass contours.
Embodiment 1
A kind of processing method of milling cutter, includes the following steps:
Step 1, production knife handle 20 and cutter head blank；The cutter head blank includes substrate and gathering in the substrate
Diamond layer, the knife handle 20 and the material of the substrate are hard alloy；
Step 2 welds together the substrate and the knife handle 20, thus by the knife handle 20 and the cutter head blank
Weld together；
Step 3 processes the cutter head blank using electrical discharge machining process, cutter head 10 is formed, to be milled
Knife, the milling cutter include cutter head 10 and the knife handle 20 that is fixedly connected with the cutter head 10, the cutter head 10 have side 32 with
And the top surface 31 being connected with the side 32, the cutter head 10, which is equipped with, to be distributed relative to the center of the top surface 31 in emitting shape
9 blades 11,9 blades 11 extend on the side 32 from the top surface 31, every two adjacent blade 11
Between be equipped with cutter groove 12；
Step 4 forms groove 13, the blade 11 in the top center region of the cutter head 10 using laser processing technology
It is uniformly distributed with cutter groove 12 along the periphery of the groove 13.
The cutter head 10 and knife handle 20 are cylindrical, and the step 1 includes: to the knife handle 20 and the cutter head blank
Execute the operation of cylindrical grinding diameter.
The diameter of the knife handle 20 and the cutter head blank is 8mm, using centreless grinding equipment to the knife handle 20 with it is described
Cutter head blank executes the operation of cylindrical grinding diameter.
In the step 2, before welding together the knife handle 20 with the cutter head blank, surface grinding machine pair is used
The welding surface of the welding surface of the substrate and the knife handle 20 carries out sanding and polishing, after polishing the welding surface of the substrate with it is described
The roughness Ra of the welding surface of knife handle 20 is 0.1 μm.
In the step 2, when being welded to the knife handle 20 with the cutter head blank, the weldering in the knife handle 20 first
The welding surface of junction and the cutter head blank coats soldering paste, and using welding fixture to the knife handle 20 and the cutter head blank
It is fixed, the knife handle 20 and the cutter head blank is then placed in vacuum brazing stove at 600 DEG C and welded, when welding
Between be 3 hours, be then cooled to room temperature using the natural air cooling type of cooling.
In the step 3, QXD250 spark discharge machining tool is write from memory to cutter head blank progress electrical fire using you is inspired confidence in
Flower processing.
Embodiment 2
A kind of processing method of milling cutter, includes the following steps:
Step 1, production knife handle 20 and cutter head blank；The cutter head blank includes substrate and gathering in the substrate
Diamond layer, the knife handle 20 and the material of the substrate are hard alloy；
Step 2 welds together the substrate and the knife handle 20, thus by the knife handle 20 and the cutter head blank
Weld together；
Step 3 processes the cutter head blank using electrical discharge machining process, cutter head 10 is formed, to be milled
Knife, the milling cutter include cutter head 10 and the knife handle 20 that is fixedly connected with the cutter head 10, the cutter head 10 have side 32 with
And the top surface 31 being connected with the side 32, the cutter head 10, which is equipped with, to be distributed relative to the center of the top surface 31 in emitting shape
10 blades 11,10 blades 11 extend on the side 32 from the top surface 31, every two adjacent blade
Cutter groove 12 is equipped between 11；
Step 4 forms groove 13, the blade 11 in the top center region of the cutter head 10 using laser processing technology
It is uniformly distributed with cutter groove 12 along the periphery of the groove 13.
The cutter head 10 and knife handle 20 are cylindrical, and the step 1 includes: to the knife handle 20 and the cutter head blank
Execute the operation of cylindrical grinding diameter.
The diameter of the knife handle 20 and the cutter head blank is 15mm, using centreless grinding equipment to the knife handle 20 with it is described
Cutter head blank executes the operation of cylindrical grinding diameter.
In the step 2, before welding together the knife handle 20 with the cutter head blank, surface grinding machine pair is used
The welding surface of the welding surface of the substrate and the knife handle 20 carries out sanding and polishing, after polishing the welding surface of the substrate with it is described
The roughness Ra of the welding surface of knife handle 20 is 0.2 μm.
In the step 2, when being welded to the knife handle 20 with the cutter head blank, the weldering in the knife handle 20 first
The welding surface of junction and the cutter head blank coats soldering paste, and using welding fixture to the knife handle 20 and the cutter head blank
It is fixed, the knife handle 20 and the cutter head blank is then placed in vacuum brazing stove at 700 DEG C and welded, when welding
Between be 2 hours, be then cooled to room temperature using the natural air cooling type of cooling.
In the step 3, QXD250 spark discharge machining tool is write from memory to cutter head blank progress electrical fire using you is inspired confidence in
Flower processing.
Embodiment 3
A kind of processing method of milling cutter, includes the following steps:
Step 1, production knife handle 20 and cutter head blank；The cutter head blank includes substrate and gathering in the substrate
Diamond layer, the knife handle 20 and the material of the substrate are hard alloy；
Step 2 welds together the substrate and the knife handle 20, thus by the knife handle 20 and the cutter head blank
Weld together；
Step 3 processes the cutter head blank using electrical discharge machining process, cutter head 10 is formed, to be milled
Knife, the milling cutter include cutter head 10 and the knife handle 20 that is fixedly connected with the cutter head 10, the cutter head 10 have side 32 with
And the top surface 31 being connected with the side 32, the cutter head 10, which is equipped with, to be distributed relative to the center of the top surface 31 in emitting shape
12 blades 11,12 blades 11 extend on the side 32 from the top surface 31, every two adjacent blade
Cutter groove 12 is equipped between 11；
Step 4 forms groove 13, the blade 11 in the top center region of the cutter head 10 using laser processing technology
It is uniformly distributed with cutter groove 12 along the periphery of the groove 13.
The cutter head 10 and knife handle 20 are cylindrical, and the step 1 includes: to the knife handle 20 and the cutter head blank
Execute the operation of cylindrical grinding diameter.
The diameter of the knife handle 20 and the cutter head blank is 20mm, using peripheral milling equipment to the knife handle 20 with it is described
Cutter head blank executes the operation of cylindrical grinding diameter.
In the step 2, before welding together the knife handle 20 with the cutter head blank, surface grinding machine pair is used
The welding surface of the welding surface of the substrate and the knife handle 20 carries out sanding and polishing, after polishing the welding surface of the substrate with it is described
The roughness Ra of the welding surface of knife handle 20 is 0.25 μm.
In the step 2, when being welded to the knife handle 20 with the cutter head blank, the weldering in the knife handle 20 first
The welding surface of junction and the cutter head blank coats soldering paste, and using welding fixture to the knife handle 20 and the cutter head blank
It is fixed, the knife handle 20 and the cutter head blank is then placed in vacuum brazing stove at 650 DEG C and welded, when welding
Between be 2.5 hours, be then cooled to room temperature using the natural air cooling type of cooling.
In the step 3, QXD250 spark discharge machining tool is write from memory to cutter head blank progress electrical fire using you is inspired confidence in
Flower processing.
It will be appreciated by those skilled in the art that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also be carried out corresponding change and is located at the one or more dresses for being different from this implement scene
In setting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
The foregoing is merely preferable implementation examples of the invention, are not intended to limit the invention, all of the invention
Within spirit and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of processing method of milling cutter, which comprises the steps of:
Step 1, production knife handle and cutter head blank；The cutter head blank includes substrate and the plycrystalline diamond Buddha's warrior attendant in the substrate
The material of rock layers, the knife handle and the substrate is hard alloy；
Step 2 welds together the substrate and the knife handle, so that the knife handle and the cutter head blank are welded on one
It rises；
Step 3 processes the cutter head blank using electrical discharge machining process, forms cutter head, so that milling cutter is obtained, it is described
Milling cutter includes cutter head and the knife handle that is fixedly connected with the cutter head, and the cutter head has a side and is connected with the side
Top surface, the cutter head are equipped with 9-12 blade being distributed relative to the center of the top surface in emitting shape, the 9-12 knife
Sword extends on the side from the top surface, is equipped with cutter groove between every two adjacent blade.
2. the processing method of milling cutter as described in claim 1, which is characterized in that the cutter head and knife handle are cylindrical, institute
Stating step 1 includes: to execute the operation of cylindrical grinding diameter to the knife handle and the cutter head blank.
3. the processing method of milling cutter as described in claim 1, which is characterized in that in the step 2, by the knife handle and institute
It states before cutter head blank welds together, the welding surface of the substrate and the welding surface of the knife handle is carried out using surface grinding machine
Sanding and polishing, the roughness Ra of the welding surface of the welding surface of the substrate and the knife handle is no more than 0.4 μm after polishing.
4. the processing method of milling cutter as described in claim 1, which is characterized in that in the step 2, to the knife handle with it is described
When cutter head blank is welded, soldering paste is coated in the welding surface of the welding surface of the knife handle and the cutter head blank first, and
The knife handle and the cutter head blank are fixed using welding fixture, are then placed in the knife handle and the cutter head blank
Vacuum brazing stove is welded at 600 DEG C -700 DEG C, and weld interval is 2-3 hour.
5. the processing method of milling cutter as described in claim 1, which is characterized in that the 9-12 blade in the shape of a spiral, institute
The helical angle for stating blade is 15 ° -30 °；The anterior angle of the cutter groove is 3 ° -12 °.
6. the processing method of milling cutter as described in claim 1, which is characterized in that the length of the cutter groove is 3mm-7mm；It is described
The depth of cutter groove is 1mm-2mm.
7. the processing method of milling cutter as described in claim 1, which is characterized in that the tread of the blade is 0.05mm-
0.8mm。
8. the processing method of milling cutter as described in claim 1, which is characterized in that the shape of the blade is triangle or ladder
Shape.
9. the processing method of milling cutter as claimed in claim 8, which is characterized in that the hard alloy is the conjunction of tungsten carbide-base hard
Gold.
10. the processing method of milling cutter as described in claim 1, which is characterized in that further include: step 4, using laser processing work
Skill forms groove in the top center region of the cutter head, and the blade and cutter groove are uniformly distributed along the periphery of the groove.
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| CN201811116418.3A CN108942131A (en) | 2018-09-25 | 2018-09-25 | The processing method of milling cutter |
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| CN201811116418.3A CN108942131A (en) | 2018-09-25 | 2018-09-25 | The processing method of milling cutter |
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| CN111015142A (en) * | 2019-12-23 | 2020-04-17 | 浙江浪潮精密机械有限公司 | Hard alloy woodworking cutting milling cutter and processing technology thereof |
| CN111497035A (en) * | 2020-03-25 | 2020-08-07 | 广东工业大学 | PCD cutter for realizing milling instead of grinding, preparation method and application thereof |
| CN113414592A (en) * | 2020-04-17 | 2021-09-21 | 湖南科技大学 | Milling method |
| CN113770670A (en) * | 2021-09-26 | 2021-12-10 | 瑞声精密制造科技(常州)有限公司 | PCD end mill and machining method thereof |
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