CN113664269A - Diamond coating cutter for efficiently processing composite material - Google Patents
Diamond coating cutter for efficiently processing composite material Download PDFInfo
- Publication number
- CN113664269A CN113664269A CN202111073764.XA CN202111073764A CN113664269A CN 113664269 A CN113664269 A CN 113664269A CN 202111073764 A CN202111073764 A CN 202111073764A CN 113664269 A CN113664269 A CN 113664269A
- Authority
- CN
- China
- Prior art keywords
- chip
- groove
- peripheral edge
- composite materials
- 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.)
- Pending
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 55
- 239000010432 diamond Substances 0.000 title claims abstract description 55
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000000576 coating method Methods 0.000 title claims description 49
- 239000011248 coating agent Substances 0.000 title claims description 44
- 238000012545 processing Methods 0.000 title abstract description 25
- 238000005520 cutting process Methods 0.000 claims abstract description 51
- 230000002093 peripheral effect Effects 0.000 claims abstract description 49
- 238000003801 milling Methods 0.000 claims abstract description 33
- 239000013078 crystal Substances 0.000 claims description 34
- 238000003754 machining Methods 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- SDGKUVSVPIIUCF-UHFFFAOYSA-N 2,6-dimethylpiperidine Chemical compound CC1CCCC(C)N1 SDGKUVSVPIIUCF-UHFFFAOYSA-N 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 17
- 239000004918 carbon fiber reinforced polymer Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 63
- 239000002113 nanodiamond Substances 0.000 description 10
- 230000007547 defect Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 230000000737 periodic effect Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000032798 delamination Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 244000099147 Ananas comosus Species 0.000 description 1
- 235000007119 Ananas comosus Nutrition 0.000 description 1
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004050 hot filament vapor deposition Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 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 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention discloses a diamond-coated cutter for efficiently processing composite materials, which comprises a milling cutter cutting part and a milling cutter handle part, wherein the milling cutter cutting part comprises an end surface part and a peripheral edge part; the end face part comprises an end face chip groove, an end blade and an end blade chip groove; the peripheral edge part comprises a plurality of peripheral edges which are uniformly distributed on the circumference, the peripheral edges comprise peripheral edge micro-edges and a plurality of spiral chip breakers, and the spiral chip breakers and the peripheral edge micro-edges are arranged in a staggered mode; a chip groove is arranged between every two adjacent peripheral edges and is a straight groove, and the spiral chip breaker groove is communicated with the chip groove; and the outlet of the end edge chip groove is communicated with the chip groove. The invention aims to solve the problem that CFRP materials are difficult to process, and reduce chatter during cutting by improving the chip breaking capacity of a cutter so as to improve cutting stability and prolong the service life of a tool.
Description
Technical Field
The invention relates to a milling cutter, in particular to a diamond-coated cutter for efficiently processing composite materials.
Background
The carbon fiber reinforced polymer composite material (CFRP) is a composite material obtained by laminating a carbon fiber layer and a resin-based plastic material, has high specific strength, high specific modulus, low density (1.5-2 g/cm3) and good corrosion resistance and fatigue resistance compared with the traditional aviation aluminum alloy, and is widely applied to the field of aviation. The common processing modes of the CFRP material include laser processing, jet processing and milling processing, wherein the laser processing needs to consider the thickness of a workpiece and a heat affected zone, the jet processing is only suitable for side rough cutting, and fluid can reduce the interlayer bonding strength of the CFRP. However, the use of the tool is seriously affected by the characteristic of poor processability of the CFRP material, compared with metal, the side surface of a workpiece is easy to form processing defects such as burrs, fiber tears, layering, edge breakage and the like when edges, blind grooves and windows are milled, and the problems of rough processing surface, poor precision and the like are generated, and the problems can cause the service life of the tool to be reduced and the processing efficiency to be affected. And because the CFRP material has poor self thermal conductivity and low melting point, the tool is required to have good chip breaking, chip removal and heat dissipation performance during machining.
Diamond coatings are considered ideal coatings for processing CFRP materials because of their high hardness, high elastic modulus, high wear resistance, and low coefficient of friction. The grain size mainly comprises a micron diamond coating, a nanometer diamond coating and a micro-nanometer diamond coating; the preparation method mainly comprises a hot wire method (HFCVD), a bias enhancement method (BECVD), an electron enhanced hot wire method (EACVD), a direct current plasma method (DPJCVD), a microwave plasma Method (MPCVD), and the like. Compared with the traditional micron diamond coating, the nano diamond coating with the crystal grains smaller than 100 nanometers not only has smaller roughness, but also greatly improves the wear resistance, and greatly prolongs the service life of the milling cutter.
The existing design and research on CFRP material processing tools mainly focus on the traditional spiral groove milling cutter, "pineapple cutter" and "fish scale milling cutter" and the like. For example, CN 101623778A discloses a "solid carbide fish scale milling cutter", the cutting edge of the milling cutter is composed of micro-cutting units divided by spiral grooves which are symmetrically staggered in left-right rotation, the edge length of each micro-cutting unit is 0.05-0.1 mm, the width of the flank of the cutting edge is 0-0.01 mm, and the milling cutter has the advantages that: the grinding process is combined with the characteristics of grinding, a large number of tiny cutting units are utilized, the cutting resistance is reduced to a great extent, and the cutting speed and the surface quality of a workpiece are improved. However, the milling cutter has the disadvantages of complex design structure, high processing difficulty and high manufacturing cost; each tiny cutting unit has low strength, and is easy to wear and collapse during processing, so that the cutting stability is influenced; the fish scale milling cutter is designed without a chip groove, a large amount of chips cannot be removed in time during high-speed cutting, and the temperature of a processing area is increased, so that the performance of the CFRP material is influenced. CN 105364153 a discloses a flat-head end mill, which comprises at least two sets of helical flutes, wherein a specific set of intersecting helical flutes with opposite rotation directions and cutting edges formed by the two helical flutes and a back tool face are contained. The milling cutter comprises left-handed cutting edges and right-handed cutting edges at the same time, and under the alternate cutting action of the two cutting edges, the cutting components in the periodical and opposite directions can furthest utilize the shearing effect to remove the defects of burrs, sawteeth and the like generated when the carbon fiber material is processed, so that the surface quality of a workpiece is effectively improved. However, the milling cutter has poor chip breaking effect, and is easy to generate large vibration when processing CFRP materials with obvious orientation, thereby influencing the cutting stability.
The existing design and research on diamond coatings mainly focus on superfine nanocrystalline diamond coatings, micro-nano composite diamond coatings and the like. For example, CN 105506574B discloses a method for preparing a nano-diamond coating and a nano-diamond blade, the method comprises depositing a transition layer on the surface of a cemented carbide, then performing a pretreatment, and finally depositing a nano-diamond coating on the pretreated surface by a chemical vapor deposition method, wherein the bonding strength between the nano-diamond coating and a cemented carbide substrate is improved, the surface roughness is ensured, and the nano-diamond coating has high processing precision and long service life. However, compared with the traditional diamond coating, the nano diamond coating has lower hardness, so that the nano diamond coating has poorer wear resistance and has undesirable effect when processing harder materials. CN 109972115B discloses a hard alloy cutter with a micro-nano diamond coating and a preparation method thereof, wherein the diamond coating has the two-layer composite characteristic that the bottom layer is a micron thick diamond layer and the surface is a nanometer thin diamond layer, and etching pretreatment is added before the micron diamond coating is deposited on the surface of the hard alloy cutter, so that the hardness and the smoothness of the coating are ensured, and the bonding strength of the diamond coating and a hard alloy substrate is improved. However, the coating is easy to generate fatigue cracks when subjected to periodic impact load, and the crack penetration can cause the coating to collapse and fail, thereby reducing the service life of the cutter.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a diamond-coated cutter for efficiently processing composite materials, and aims to solve the problem that CFRP materials are difficult to process, and reduce chatter during cutting by improving the chip breaking capacity of the cutter so as to improve the cutting stability and prolong the service life of tools.
In order to achieve the technical purpose, the invention adopts the following technical scheme: a diamond coated cutting tool for efficient machining of composite materials comprising a milling cutter cutting portion and a milling cutter shank, the milling cutter cutting portion comprising an end face portion and a peripheral edge portion;
the end face part comprises an end face chip groove, an end blade and an end blade chip groove;
the peripheral edge part comprises a plurality of peripheral edges which are uniformly distributed on the circumference, the peripheral edges comprise a plurality of peripheral edge micro-edges and a plurality of spiral chip breakers, and the spiral chip breakers and the peripheral edge micro-edges are arranged in a staggered mode; a chip groove is arranged between every two adjacent peripheral edges and is a straight groove, and the spiral chip breaker groove is communicated with the chip groove;
and the outlet of the end edge chip groove is communicated with the chip groove.
Furthermore, there are 2 end face chip flutes, 2 end face chip flutes are 180 rotational symmetry with the terminal surface central point, 2 the end face chip flute is parallel.
Further, the end edge rake angle α 1 is 0 ° to 8 °.
Further, the rake angle α 4 of the peripheral edge micro-blade is 8 ° to 24 °.
Furthermore, the spiral angle theta 1 of the spiral chip breaker is 45-56 degrees, and the bottom of the groove is a circular groove.
Further, the milling tool has an overall length of L1, the peripheral edge portion has a step length of L2, the peripheral edge has a length of L3, and L3< L2< L1.
Further, the end surface portion and the peripheral edge portion are connected by a chamfer of 0.15mm in terms of C, at which the relief angle is 12 °.
Further, the milling tool adopts hard alloy, and the surface of a hard alloy substrate is coated with the composite diamond coating.
Further, the composite diamond coating comprises a top fine crystal layer, a main body layer and a bottom coarse crystal layer.
Further, the main body layer comprises a plurality of nano fine crystal layers and a plurality of micron coarse crystal layers, the nano fine crystal layers and the micron coarse crystal layers are stacked and staggered, the uppermost layer of the main body layer is the nano fine crystal layer, and the lowermost layer of the main body layer is the micron coarse crystal layer.
In conclusion, the invention achieves the following technical effects:
1. the milling cutter chip removal groove adopts a straight groove design, micro blades distributed on the peripheral blade are orthogonal to the orientation of a CFRP material in the milling process, the cutting component force is maximum in the radial direction, and the discontinuous cutting can generate an effective cutting effect on a carbon fiber filament shape by combining large-angle unequal spiral chip breaking grooves staggered with the peripheral blade, so that the periodic vibration caused by incomplete chip breaking is reduced;
2. according to the invention, the helical angle of the chip groove is designed to be 0 degree, so that the axial direction of the cutter is hardly influenced by external force during side milling, the cutting stability is further improved, the defects of burrs, layering, sawteeth and the like are effectively inhibited, the surface condition of a workpiece is obviously improved, and the service life of the cutter is prolonged;
3. the surface of the cutter is also coated with the composite diamond coating, and the periodic micro-nano diamond layer can effectively inhibit the longitudinal expansion of cracks while ensuring the bonding strength and the wear resistance of the coating and a matrix, thereby obviously improving the service performance of the cutter under periodic impact load and further prolonging the service life of the cutter.
Drawings
FIG. 1 is a schematic diagram of a diamond coated tool according to an embodiment of the present invention;
FIG. 2 is a front view of a diamond coated tool;
FIG. 3 is a top view of a diamond coated tool;
FIG. 4 is an enlarged partial cross-sectional view of the end blade;
FIG. 5 is an enlarged partial view of the end blade gash;
FIG. 6 is a schematic sectional view taken along line A-A at a depth of 0.4 mm;
FIG. 7 is an enlarged view of a portion of the joint between the end edge and the peripheral edge at B;
fig. 8 is a schematic view of the structure of the composite diamond coating.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example 1:
fig. 1 is a schematic view showing the structure of a cutting tool, fig. 2 is a front view showing the cutting tool, and a diamond-coated cutting tool for efficiently machining a composite material includes a milling cutter cutting portion including an end surface portion 1 and a peripheral edge portion 2 and a milling cutter shank portion 3.
The end face portion 1 comprises end face chip flutes 11, end edges 12 and end edge chip flutes 13.
In the embodiment, the diameter of the cutter is 8mm or D1, the diameter of the cutter edge is 8mm or D2, and the number of the edges T is 8.
As shown in the top view of the cutting tool shown in fig. 3, there are 2 end face chip flutes 11, 2 end face chip flutes 11 are rotationally symmetric with an end face central point of 180 degrees, and the 2 end face chip flutes 11 are arranged in parallel and used for accommodating scraps on the end face and preventing the scraps from accumulating on the end face to affect processing.
The width of the end face chip flute 11 is L4, the length of the end face chip flute 11 is L5, and the distance between the end face chip flutes 11 is L8, in this embodiment, L4 is 2.18mm, L5 is 4.2mm, L8 is 0.51mm, the depth is 0.2mm, and both side inclination angles are 30 °.
As shown in fig. 3, the end edges 12 are circumferentially and uniformly distributed, and in this embodiment, the number of the end edges 12 is 8, and in combination with the partially enlarged view of the end edge cross section in fig. 4, the second end edge relief angle α 3 of the end edge 12 is 12 ° to 25 °, α 3 in this embodiment is 21 °, the end edge rake angle is α 1, the first end edge relief angle is α 2, and the first end edge relief angle width is W1, where α 1 is 0 ° to 8 °, α 1 in this embodiment is 0 °, a small-angle rake angle α 1 is adopted to design and enhance the edge strength, prevent the end edge from breaking, and improve the overall cutting stability of the tool, α 2 is 8 °, W1 is 0.53mm, and in combination with fig. 3, the left-right end edge deviation L6 is 0.15mm, the upper-lower end edge deviation L7 is 1.1mm, and the long tooth edge is over center. As shown in fig. 2, the butterfly angle β 1 of the end edge is 3 °.
Referring to fig. 3, the end blade chip flute 13 includes an end blade long tooth chip flute and an end blade short tooth chip flute, the end blade long tooth chip flute depth is L13, the end blade short tooth chip flute depth is L14, and the spread angle of the end blade chip flute is γ 1. As shown in the enlarged partial view of the end edge gash in fig. 5, the end edge chip flute spread angle γ 1 is 45 °, L13 is 1.56mm, and L14 is 1.17 mm. The depth of the long tooth clearance (the end blade long tooth chip groove depth L13) and the depth of the short tooth clearance (the end blade short tooth chip groove depth L14) are larger, the angle of the spread angle gamma 1 of the end blade chip groove is larger, and meanwhile, the end blade chip groove 13 and the large-angle end blade second relief angle alpha 3 are matched with the end surface parallel chip groove 11, so that CFRP powder chips in face milling can be effectively removed, and accumulated chips are prevented from being accumulated and wearing the cutter surface.
As shown in fig. 1, the peripheral edge portion 2 includes a plurality of peripheral edges uniformly distributed circumferentially, the peripheral edges include a plurality of peripheral edge micro-edges 21 and a plurality of spiral chip breakers 22, the spiral chip breakers 22 and the peripheral edge micro-edges 21 are arranged in a staggered manner, one blade formed by the staggered arrangement is the peripheral edge, and the peripheral edges extend and are arranged along the length direction of the cutter.
As shown in fig. 2, the end face portion 1 and the peripheral edge portion 2 are connected by a chamfer of 0.15mm in C, which has a relief angle of 12 °.
The edge length L3 of the peripheral edge is 32mm, and as shown in fig. 6, the sectional view a-a at the depth of 0.4mm is shown, the rake angle α 4 of the peripheral edge micro-edge 21 is 8 ° to 24 °, in this embodiment, 18 ° is selected, in this embodiment, the rake angle α 4 is large, and a large shear force can be generated on the carbon fiber material, the first relief angle α 5 is 8 °, the second relief angle α 6 is 18 °, the first relief angle width W2 is 0.53mm, and the second relief angle width W3 is 0.75 mm. The large front angle alpha 4 of the cutting micro-blade can ensure that the surface of the workpiece has no defects of burrs, layering and the like.
The helix angle θ 1 of the helical breaker groove 22 is 45 ° to 56 °, and the groove bottom is a circular groove. As shown in fig. 7, which is an enlarged schematic view of a portion B in fig. 2, that is, a partially enlarged view of a connection portion between the end edge and the peripheral edge, it can be seen that a shortest distance between the spiral chip breaker 22 and the end surface is L9, a width of the spiral chip breaker 22 is L10, a depth of the spiral chip breaker 22 is L11, and a pitch of the spiral line of the spiral chip breaker 22 is L12, in this embodiment, L9 is 1.03mm, L10 is 0.63mm, L11 is 0.3mm, and L12 is ai(i ═ 1,2,3.. n), n is a positive integer, and 1.2 mm. ltoreq.aiLess than or equal to 1.8mm, in this example L12 is 1.45mm, namely aiThe number of grooves n is selected to be equal to the actual number, and in this embodiment, the number of grooves n is 12, that is, the number of spiral breaker grooves 22 is 12, but may be 8, 24, or the like.
As can be seen from fig. 2, a chip groove 23 is formed between two adjacent peripheral edges, the chip groove 23 is a straight groove, the spiral chip breaker 22 is communicated with the chip groove 23, and an outlet of the end edge chip groove 13 is communicated with the chip groove 23, so that the waste chips are discharged conveniently, and the resistance in the flowing process is reduced.
The chip groove 23 is a straight groove, namely the angle of the helical angle is 0 degree, the largest radial cutting force is provided for the cutting micro-blade, the carbon fiber wire can be cut off rapidly, and the vibration caused by incomplete wire breakage is inhibited. The straight groove has higher chip breaking capability compared with the spiral groove, the tool vibration is reduced, the chip breaking groove-free design can cause continuous cutting of the tool, and the local cutting force is easy to cause overlarge edge breakage when a single edge cannot cut off fibers in a CFRP material in time, so that the service life of the tool is directly influenced.
As shown in fig. 2, the milling tool has an overall length of L1, the peripheral edge portion 2 has a step length of L2, the peripheral edge has a length of L3, L3< L2< L1. In this embodiment, L1-75 mm, L2-36 mm, and L3-32 mm.
Compared with other tools, the cutting tool has good chip removal performance, solves the problem of tool vibration during machining, improves the quality of a machined surface of a workpiece, and prolongs the service life of the tool.
In addition, the milling tool of the present invention uses cemented carbide, and as shown in fig. 4, the surface of the cemented carbide substrate is coated with a composite diamond coating 4.
The composite diamond coating 4 is composed of a top fine crystal layer 41, a main body layer 42, and a bottom coarse crystal layer 43.
Specifically, the main body layer 42 includes a plurality of nano-fine crystal layers 42a and a plurality of micro-coarse crystal layers 42b, the nano-fine crystal layers 42a and the micro-coarse crystal layers 42b are stacked and staggered, and the uppermost layer of the main body layer 42 is the nano-fine crystal layer 42a, and the lowermost layer is the micro-coarse crystal layer 42 b.
The hard alloy matrix can be made of the following materials: tungsten carbide hard alloy, titanium carbide hard alloy and chromium carbide hard alloy, preferably tungsten carbide hard alloy.
The thickness of the top fine-grain layer 41 is 1-2 um, and the size of diamond grains is 50-300 nm; the main body layer 41 is formed by periodically laminating a nano fine-grain layer 42a and a micron coarse-grain layer 42b, the whole thickness of the coating is 2-10 um, the modulation period number P is more than or equal to 2, wherein the thickness of the nano fine-grain layer 42a is 0.2-2 um, the size of diamond grains of the nano fine-grain layer is 50-300 nm, the thickness of the micron coarse-grain layer 42b is 0.2-2 um, and the size of diamond grains of the micron coarse-grain layer is 1-5 um; the thickness of the bottom coarse crystal layer 43 is 2-4 um, and the size of the diamond crystal grains is 1-5 um.
In this embodiment, the thickness H1 of the top fine crystal layer 41 in the composite diamond coating is 1um, the thickness H2 of the main body layer 42 in the composite diamond coating is 8um, the thickness H3 of the middle coarse crystal layer 3 in the composite diamond coating is 4um, the thickness H4 of the micrometer coarse crystal layer 42a in the main body layer 42 of the composite diamond coating is 0.5um, the thickness H5 of the micrometer coarse crystal layer 42b in the main body layer 42 of the composite diamond coating is 0.5um, and the overall thickness H6 of the composite diamond coating is 13 um; the micro-nano modulation period number P in the composite diamond coating main body layer is 8; the grain size G2 of the coarse crystal layer is 1-3 um, and the grain size G1 of the fine crystal layer is 50-100 nm.
The nano fine-grained layer on the top layer of the composite diamond coating can provide higher coating hardness, processing precision and surface quality; the bottom layer micron coarse crystal layer ensures the bonding strength between the coating and the substrate and prevents the integral peeling failure between the coating and the substrate; the middle main body layer adopts the periodic micro-nano composite diamond layer, so that the energy of the cracks passing through the layers is increased while the hardness and the wear resistance are ensured, the longitudinal growth of the cracks is hindered, the service life of the cutter is further prolonged, and even if vibration is generated during cutting or a larger periodic impact load is applied, the longitudinally-grown cracks cannot immediately extend to a coating interface, but transversely expand layer by layer along the composite layers, so that the overall performance of the coating is ensured.
Example 2:
the difference from example 1 is that: in the embodiment, the spiral chip breaker adopts an unequal design, and the spiral line distance L12 is ai(i ═ 1,2,3.. n), n is a positive integer, and a is1≠a2≠a3≠...≠an。
During processing, aiThe number may be a random unequal number, or may be a gradually increasing or gradually decreasing number.
Because part of CFRP materials have obvious periodicity, tool chatter caused by resonance is easy to generate during cutting, and the surface machining quality and the tool service life are influenced. The adoption of the spiral line with unequal intervals can effectively eliminate the vibration period overlapping of the cutter and the workpiece, thereby avoiding the vibration of the cutter.
Example 3:
the difference from embodiment 1 or embodiment 2 is that: in the present embodiment, the rake angle α 4 of the peripheral micro-blade 21 is 21 °.
Because the size of the rake angle α 4 of the minor cutting edge 21 of the peripheral edge affects the cutting strength, and a smaller α 4 can cause defects such as burr delamination, the angle of α 4 is processed into a larger angle in this embodiment, which does not affect the integrity and completeness of the whole tool, and can also improve the cutting strength of the whole tool, and meanwhile, the defects such as burr delamination are avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A diamond coated cutting tool for efficient machining of composite materials is characterized in that: comprises a milling cutter cutting part and a milling cutter handle part (3), wherein the milling cutter cutting part comprises an end surface part (1) and a peripheral edge part (2);
the end face part (1) comprises an end face chip groove (11), an end blade (12) and an end blade chip groove (13);
the peripheral edge part (2) comprises a plurality of peripheral edges which are uniformly distributed on the circumference, the peripheral edges comprise a plurality of peripheral edge micro edges (21) and a plurality of spiral chip breakers (22), and the spiral chip breakers (22) and the peripheral edge micro edges (21) are arranged in a staggered mode; a chip groove (23) is formed between every two adjacent peripheral edges, the chip groove (23) is a straight groove, and the spiral chip breaker groove (22) is communicated with the chip groove (23);
and the outlet of the end edge chip groove (13) is communicated with the chip groove (23).
2. A diamond coated tool for efficient machining of composite materials according to claim 1, characterized in that: the end face chip flutes (11) have 2, 2 end face chip flutes (11) are 180 degrees rotational symmetry with the end face central point, 2 end face chip flutes (11) are parallel.
3. A diamond coated tool for efficient machining of composite materials according to claim 2, characterized in that: the end edge rake angle of the end edge (12) is 0-8 degrees.
4. A diamond coated tool for efficient machining of composite materials according to claim 3, characterized in that: the rake angle alpha 4 of the peripheral edge micro blade (21) is 8-24 degrees.
5. A diamond coated tool for efficient machining of composite materials according to claim 4, characterized by: the spiral angle theta 1 of the spiral chip breaker groove (22) is 45-56 degrees, and the groove bottom is a circular groove.
6. A diamond coated tool for efficient machining of composite materials according to claim 5, characterized by: the milling tool has an overall length of L1, the peripheral edge portion (2) has a step length of L2, the peripheral edge has a length of L3, and L3< L2< L1.
7. A diamond coated tool for efficient machining of composite materials according to claim 6, characterized by: the end surface part (1) is connected with the peripheral edge part (2) by a chamfer of 0.15mm, and the chamfer angle is 12 degrees.
8. A diamond coated tool for efficient machining of composite materials according to claim 7, characterized in that: the milling tool adopts hard alloy, and the surface of a hard alloy matrix is coated with a composite diamond coating (4).
9. A diamond coated tool for efficient machining of composite materials according to claim 8, characterized by: the composite diamond coating (4) comprises a top fine crystal layer (41), a main body layer (42) and a bottom coarse crystal layer (43).
10. A diamond coated tool for efficient machining of composite materials according to claim 9, characterized by: the main body layer (42) comprises a plurality of nano fine crystal layers (42a) and a plurality of micron coarse crystal layers (42b), the nano fine crystal layers (42a) and the micron coarse crystal layers (42b) are overlapped and staggered, the uppermost layer of the main body layer (42) is the nano fine crystal layer (42a), and the lowermost layer is the micron coarse crystal layer (42 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073764.XA CN113664269A (en) | 2021-09-14 | 2021-09-14 | Diamond coating cutter for efficiently processing composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073764.XA CN113664269A (en) | 2021-09-14 | 2021-09-14 | Diamond coating cutter for efficiently processing composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113664269A true CN113664269A (en) | 2021-11-19 |
Family
ID=78549516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111073764.XA Pending CN113664269A (en) | 2021-09-14 | 2021-09-14 | Diamond coating cutter for efficiently processing composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113664269A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10263915A (en) * | 1997-03-25 | 1998-10-06 | Hitachi Tool Eng Co Ltd | Cemented carbide end mill |
| CN101842501A (en) * | 2007-11-01 | 2010-09-22 | 通用汽车环球科技运作公司 | Polycrystalline diamond cutting tool with coated body |
| CN102211218A (en) * | 2011-04-01 | 2011-10-12 | 上海祥仁新材料有限公司 | Diamond coated cutter and application thereof to processing of fiber composite material |
| CN202010808U (en) * | 2011-03-27 | 2011-10-19 | 厦门锐锋科技有限公司 | Cubic boron nitride (CBN)/polycrystalline diamond (PCD) deep-cavity end-cutting end milling cutter |
| CN203725865U (en) * | 2014-01-06 | 2014-07-23 | 厦门金鹭特种合金有限公司 | Rough machining and finish machining end mill for carbon fiber composite |
| DE102013002730A1 (en) * | 2013-02-16 | 2014-08-21 | Hans-Jürgen Gittel | Milling tool for processing workpieces, has roughing gearing unit that intersects with simple gearing unit and arranged on radial larger flight circle, where tool is resharpened typically in splinter space and/or at chip surface |
| CN204686148U (en) * | 2015-05-30 | 2015-10-07 | 奥斯机(上海)精密工具有限公司 | Composite lozenge pattern tooth shape carbide-tipped milling cutter |
| CN105483644A (en) * | 2016-01-15 | 2016-04-13 | 中国科学院深圳先进技术研究院 | Multilayer diamond coating, manufacturing method thereof and coating tool |
| CN106319518A (en) * | 2016-08-19 | 2017-01-11 | 富耐克超硬材料股份有限公司 | Diamond/metal carbide composite coating layer and preparation method and application thereof |
| CN107363312A (en) * | 2017-09-11 | 2017-11-21 | 大连理工大学 | Band edge sword slotting cutter for carbon fibre composite high-speed milling |
| CN109304507A (en) * | 2018-10-19 | 2019-02-05 | 厦门金鹭特种合金有限公司 | One kind is for carbon fibre composite processing PCD milling cutter |
| CN111136313A (en) * | 2020-01-16 | 2020-05-12 | 苏州阿诺精密切削技术有限公司 | Scale-shaped dense-tooth diamond coating milling cutter for composite material |
| CN211387076U (en) * | 2019-12-24 | 2020-09-01 | 常州利德切削技术有限公司 | High-efficient branch bits milling cutter that can be used to deep hole reaming processing |
| CN112157303A (en) * | 2020-10-23 | 2021-01-01 | 苏州阿诺精密切削技术有限公司 | A ripples sword rough milling cutter for processing of cast iron vortex dish |
| CN212329788U (en) * | 2020-04-20 | 2021-01-12 | 富耐克超硬材料股份有限公司 | PCD wire drawing milling cutter |
-
2021
- 2021-09-14 CN CN202111073764.XA patent/CN113664269A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10263915A (en) * | 1997-03-25 | 1998-10-06 | Hitachi Tool Eng Co Ltd | Cemented carbide end mill |
| CN101842501A (en) * | 2007-11-01 | 2010-09-22 | 通用汽车环球科技运作公司 | Polycrystalline diamond cutting tool with coated body |
| CN202010808U (en) * | 2011-03-27 | 2011-10-19 | 厦门锐锋科技有限公司 | Cubic boron nitride (CBN)/polycrystalline diamond (PCD) deep-cavity end-cutting end milling cutter |
| CN102211218A (en) * | 2011-04-01 | 2011-10-12 | 上海祥仁新材料有限公司 | Diamond coated cutter and application thereof to processing of fiber composite material |
| DE102013002730A1 (en) * | 2013-02-16 | 2014-08-21 | Hans-Jürgen Gittel | Milling tool for processing workpieces, has roughing gearing unit that intersects with simple gearing unit and arranged on radial larger flight circle, where tool is resharpened typically in splinter space and/or at chip surface |
| CN203725865U (en) * | 2014-01-06 | 2014-07-23 | 厦门金鹭特种合金有限公司 | Rough machining and finish machining end mill for carbon fiber composite |
| CN204686148U (en) * | 2015-05-30 | 2015-10-07 | 奥斯机(上海)精密工具有限公司 | Composite lozenge pattern tooth shape carbide-tipped milling cutter |
| CN105483644A (en) * | 2016-01-15 | 2016-04-13 | 中国科学院深圳先进技术研究院 | Multilayer diamond coating, manufacturing method thereof and coating tool |
| CN106319518A (en) * | 2016-08-19 | 2017-01-11 | 富耐克超硬材料股份有限公司 | Diamond/metal carbide composite coating layer and preparation method and application thereof |
| CN107363312A (en) * | 2017-09-11 | 2017-11-21 | 大连理工大学 | Band edge sword slotting cutter for carbon fibre composite high-speed milling |
| CN109304507A (en) * | 2018-10-19 | 2019-02-05 | 厦门金鹭特种合金有限公司 | One kind is for carbon fibre composite processing PCD milling cutter |
| CN211387076U (en) * | 2019-12-24 | 2020-09-01 | 常州利德切削技术有限公司 | High-efficient branch bits milling cutter that can be used to deep hole reaming processing |
| CN111136313A (en) * | 2020-01-16 | 2020-05-12 | 苏州阿诺精密切削技术有限公司 | Scale-shaped dense-tooth diamond coating milling cutter for composite material |
| CN212329788U (en) * | 2020-04-20 | 2021-01-12 | 富耐克超硬材料股份有限公司 | PCD wire drawing milling cutter |
| CN112157303A (en) * | 2020-10-23 | 2021-01-01 | 苏州阿诺精密切削技术有限公司 | A ripples sword rough milling cutter for processing of cast iron vortex dish |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10272504B2 (en) | Tool with right-hand and left-hand cutting features extending along the full length of the cutting zone | |
| RU2422252C1 (en) | End milling cutter for drilling plastic material reinforced by fibre | |
| JP5945283B2 (en) | drill | |
| WO2019047557A1 (en) | Micro-teeth arrangement designable end mill having tip blade for dedicated use with carbon fiber composite material | |
| US10046402B2 (en) | Rotary cutting tool | |
| RU2488464C1 (en) | Drill with indexable cutting plates and drill body | |
| JP2666007B2 (en) | Cutting tool with nick | |
| CN109304507B (en) | PCD milling cutter for processing carbon fiber composite material | |
| JP2004122288A (en) | Drill for deep hole boring | |
| CN210254406U (en) | Linear type three-point-fine tooth-shaped drilling and milling composite cutter | |
| US5667344A (en) | CVD diamond cutting tools with oriented crystal grain boundaries | |
| CN214392488U (en) | Annular cutter for drilling composite material | |
| CN113664269A (en) | Diamond coating cutter for efficiently processing composite material | |
| JP5914446B2 (en) | Cutting tool and workpiece machining method using the same | |
| CN112976357A (en) | Milling cutter for fiber-reinforced ceramic matrix composite and manufacturing method thereof | |
| JP4787910B2 (en) | Cemented carbide end mill and cutting method using the end mill | |
| JP5953173B2 (en) | Cutting tools | |
| CN114951782A (en) | Milling cutter for processing composite material | |
| CN211218872U (en) | Milling cutter for CFRP aviation composite material | |
| JP4738828B2 (en) | Diamond film coated member | |
| KR102479383B1 (en) | Cutting tool having hard coating layer and cemented carbide coating layer and manufacturing method thereof | |
| JP2023521019A (en) | A rotary cutting tool in which continuous large grooves and discontinuous small grooves intersect to form quadrilateral surface sections | |
| CN112620760A (en) | Combination milling cutter with PCD insert and micro blade | |
| US20240024970A1 (en) | Cutting tool for machining fiber composite materials | |
| CN217492825U (en) | Vertical milling cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |