CN102554319B - Carbon film cladding drill and manufacture method thereof - Google Patents
Carbon film cladding drill and manufacture method thereof Download PDFInfo
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- CN102554319B CN102554319B CN201110439676.7A CN201110439676A CN102554319B CN 102554319 B CN102554319 B CN 102554319B CN 201110439676 A CN201110439676 A CN 201110439676A CN 102554319 B CN102554319 B CN 102554319B
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 217
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 238000005253 cladding Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000011159 matrix material Substances 0.000 claims abstract description 121
- 229910003460 diamond Inorganic materials 0.000 claims description 19
- 239000010432 diamond Substances 0.000 claims description 19
- 238000003754 machining Methods 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 abstract description 41
- 150000001721 carbon Chemical class 0.000 abstract description 14
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 238000005286 illumination Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 230000008961 swelling Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a kind of carbon film cladding drill, this carbon film cladding drill by having the carbon film coateds such as tool fife, and has cutting edge sharper than ever.In addition, provide a kind of can the manufacture method of this drill bit of processing and fabricating accurately.The feature of this carbon film cladding drill is, the carbon film in the region after the region on matrix rake face and described matrix on knife face forms concave surface respectively, these concave surfaces intersect and form carbon film point of a knife on matrix point of a knife, the angle (θ 0) that after the intersecting angle of these concave surfaces is less than described matrix rake face (2c) and described matrix, knife face (2d) is formed.
Description
Technical field
The present invention relates to and a kind ofly can process the carbon film cladding drill and manufacture method thereof that are cut material tartly.
Background technology
In the diamond-coated cutting element by the coated cutting edge surface of diamond film, propose the roughly arc sections that such as attrition process is formed on the cutting edge in the past, and become the mode of less than 40 that the technology (with reference to patent document 1) of chamfering is set partly with the angle of roughly arc sections.Further, also the above-mentioned roughly arc sections of attrition process is proposed, with the technology (with reference to patent document 2) making relief angle be less than original angle.
In addition, the part that the cutting edge in this description represents the point of a knife comprising cutting element, the rake face connected with point of a knife and the region of the part of rear knife face connected with point of a knife.
As the Ginding process of above-mentioned diamond film coated cutting tool, the laser mill method described in patent document 3 is proposed.While this laser mill method scans the focus (making it mobile) of laser on the surface of tool fife, make tool fife itself mobile.Like this, by making the relative motion of both the focus of laser and tool fife, the protuberance being formed in tool fife surface is removed.In addition, the manufacture method of the machining tool described in patent document 4 to tool fife vertically illumination wavelength be that the laser of 266nm is processed machining tool.
Patent document 1: Japan Patent No. 3477182 publication
Patent document 2: Japan Patent No. 3477183 publication
Patent document 3: Japan Patent No. 3096943 publication
Patent document 4: Japanese Patent Publication 2009-6436 publication
Following problem is left in above-mentioned prior art.
The first, when forming cutting edge by grinding, because diamond is harder than emery wheel, the metamorphosis of emery wheel can therefore be produced in process.Result is difficult to carry out required shape processing accurately.
The movement of the workpiece (being cut thing) that the method that the second, limit makes laser and tool fife jointly carry out carrying out scanning Laser Processing in relative motion limit needs the form according to workpiece to carry out further.Therefore, the focus of laser and the position control of tool fife more complicated.
Three, vertically irradiating in the processing method of laser tool fife, the form after processing is easy to the undulations reflecting the front overlay film of processing.Therefore, the overlay film before processing needs to be formed as uniform tool fife.So high-precision processing is more difficult.
When four, forming tool fife on the point of a knife of the cutting edge at drill bit etc., owing to corresponding to the thickness of tool fife, overlay film swell formation on point of a knife, is therefore difficult to processing point of a knife.Therefore, be difficult to making tool fife apply and the drill bit with sharp cutting edge in the past.
Summary of the invention
The present invention completes in view of aforementioned problems, its object is to provide a kind of carbon film cladding drill, it is by carbon film coateds such as tool fifes, and has cutting edge sharper than ever, and provide a kind of can the manufacture method of this drill bit of processing and fabricating accurately.
The present invention adopts following structure to solve described problem.That is, the carbon film cladding drill of a first aspect of the present invention, is characterized in that, has: tool base, knife face after having matrix point of a knife and clipping matrix rake face and matrix that described matrix point of a knife adjoins each other, and carbon film, be formed in described matrix point of a knife, after described matrix rake face and described matrix on knife face, on described carbon film, region after region on described matrix rake face and described matrix on knife face is formed with the concave surface of the rake face side of caving in described tool base and the concave surface of rear knife face side respectively, the concave surface of described rake face side and the concave surface of described rear knife face side intersect on described matrix point of a knife, thus carbon film point of a knife is formed on described carbon film, the angle that after the angle that the concave surface of described rake face side and the concave surface of described rear knife face side intersect to form is less than described matrix rake face and described matrix, knife face is formed.
In this carbon film cladding drill, the carbon film in the region after the region on matrix rake face and matrix on knife face is formed with respectively the concave surface of rake face side to tool base depression and the concave surface of rear knife face side.And then the concave surface of rake face side intersects with the concave surface of rear knife face side and form carbon film point of a knife on carbon film on matrix point of a knife.And then, the angle that after the angle that the concave surface of rake face side and the concave surface of rear knife face side intersect to form is less than matrix rake face and matrix, knife face is formed.By having above structure, above-mentioned carbon film cladding drill has cutting edge sharper than ever.
That is, to be subsided relative to the elongated surfaces of rake face and rear knife face by the carbon film surface that comprises the part (cutting edge) of carbon film point of a knife and by concave surface, thus the carbon film of carbon film point of a knife can be formed shrilly.Result, in above-mentioned carbon film cladding drill, can obtain the cutting edge sharper than the chamfering formed by existing method.
In above-mentioned carbon film cladding drill, described carbon film can be diamond film.
In addition, in above-mentioned carbon film cladding drill, the section of the concave surface of the described rake face side formed by the face orthogonal with described carbon film point of a knife and the concave surface of described rear knife face side can be circular shape.
In addition, in above-mentioned carbon film cladding drill, the radius of curvature of the circular shape of the section of the concave surface of described rake face side and the concave surface of described rear knife face side can in the scope of 5 μm to 3000 μm.
In addition, in above-mentioned carbon film cladding drill, the concave surface of described rake face side and the concave surface of described rear knife face side orthogonal with described carbon film point of a knife and can in the scope of 10 μm to 2000 μm along the width on the direction in respective face.
In addition, in above-mentioned carbon film cladding drill, the degree of depth of the concave surface 3a of described rake face side and the concave surface 3a of described rear knife face side can in the scope of 2 μm to 15 μm.
In addition, in above-mentioned carbon film cladding drill, the width on the direction orthogonal with carbon film point of a knife of the concave surface 3a of described rake face side and the concave surface of described rear knife face side can in the scope of 10 μm to 2000 μm, and the degree of depth of the concave surface 3a of described rake face side and the concave surface 3a of described rear knife face side can in the scope of 2 μm to 15 μm.
The manufacture method of the carbon film cladding drill of a second aspect of the present invention, for manufacturing the method for the carbon film cladding drill of the invention described above, it is characterized in that, have: matrix preparatory process, prepare there is matrix point of a knife and clip the tool base of knife face after the matrix rake face and matrix that described matrix point of a knife adjoins each other, carbon film formation process, after the described matrix rake face of described tool base, described matrix, knife face and described matrix point of a knife forms carbon film, and laser machining process, to described carbon film illuminating laser beam, be processed to form the described carbon film in the region after region on described matrix rake face and described matrix on knife face, thus form the concave surface of rake face side and the concave surface of rear knife face side in rake face side and rear knife face side respectively, described rake face side intersects with the concave surface of described rear knife face side and forms carbon film point of a knife on described matrix point of a knife, and in described laser machining process, light distribution in the beam profile of described laser beam is rendered as Gaussian Profile, described laser beam is irradiated from described carbon film point of a knife front towards the described carbon film of the described rake face side near described carbon film point of a knife or described rear knife face side, described laser beam scans along the bearing of trend of described carbon film point of a knife.
The manufacture method of this carbon film cladding drill is in laser machining process, light distribution in the beam profile of laser beam is rendered as Gaussian Profile, and from carbon film point of a knife front towards the carbon film illuminating laser beam of the rake face side near carbon film point of a knife or rear knife face side, this laser beam carries out scanning along the bearing of trend of carbon film point of a knife thus forms described concave surface.As a result, when observing from the section orthogonal with carbon film point of a knife, the excision trace of the carbon film formed by the laser beam irradiated from the front of carbon film point of a knife is rendered as circular shape, and can form described concave surface accurately along carbon film point of a knife.In addition, the outer circumferential side due to laser beam is contacted with the leading section (cutting edge portion) of carbon film, therefore can reduce power (intensity) density of laser beam in this leading section compared with the central part of laser beam.Consequently can prevent the leading section of carbon film from being become obtuse angle by too excising.
Described carbon film, in described carbon film formation process, by the coating of CVD film forming, described matrix point of a knife is formed as more swelling than other parts by the manufacture method of above-mentioned carbon film cladding drill.
The manufacture method of above-mentioned carbon film cladding drill, in carbon film formation process, by being pre-formed carbon film for more swelling than other parts on matrix point of a knife, thus can arrange the chipping allowance of the carbon film in laser machining process significantly.Therefore, the manufacture method of this carbon film cladding drill can form darker concave surface and sharper cutting edge.In addition, the matrix point of a knife mutually close due to these two faces of rake face and rear knife face is the position that carbon film is easily grown up, therefore, it is possible to by utilize CVD film forming thicker apply carbon film and carbon film divided in cutting edge portion be formed as more swelling than other parts.
In the manufacture method of above-mentioned carbon film cladding drill, described carbon film can be diamond film, and the wavelength of described laser beam can be below 360nm.
In the manufacture method of this carbon film cladding drill, because carbon film is diamond film and the wavelength of laser beam is below 360nm, therefore, it is possible to process diamond film accurately further by the laser beam with the wavelength being suitable for diamond machined.
According to mode of the present invention, realize following effect.
In the carbon film cladding drill of a first aspect of the present invention, the carbon film in the region after the region on matrix rake face and matrix on knife face is formed with respectively the concave surface of rake face side to tool base depression and the concave surface of rear knife face side.And then the concave surface of rake face side and the concave surface of rear knife face side intersect and form carbon film point of a knife on carbon films on matrix point of a knife.And then, the angle that after the angle that the concave surface of rake face side and the concave surface of rear knife face side intersect to form is less than matrix rake face and matrix, knife face is formed.By having above structure, above-mentioned carbon film cladding drill can have cutting edge sharper than ever.
In addition, the manufacture method of carbon film cladding drill according to a second aspect of the invention, due in laser machining process, light distribution in the beam profile of laser beam is rendered as Gaussian Profile, and from the front of carbon film point of a knife towards the carbon film illuminating laser beam of the rake face side near carbon film point of a knife or rear knife face side, this laser beam carries out scanning along the bearing of trend of carbon film point of a knife thus forms described concave surface, therefore, it is possible to form described concave surface accurately along carbon film point of a knife, and sharp cutting edge can be formed.
Therefore, carbon film cladding drill of the present invention and the carbon film cladding drill utilizing above-mentioned manufacture method to make, the not only excellent in abrasion resistance that brings of carbon film, and also sharpness is also very excellent, is also suitable for the drill bit as nonferrous metal and composite processing.
Accompanying drawing explanation
Fig. 1 represents in an embodiment of carbon film cladding drill of the present invention and manufacture method thereof, the amplification view of the cutting edge of carbon film cladding drill and the major part of laser machining process.
Fig. 2 A is the side view of the carbon film cladding drill representing present embodiment.
Fig. 2 B is the front view of the blade of the carbon film cladding drill representing present embodiment.
Fig. 3 is the schematic overview structure chart representing the laser processing device used in the manufacture method of the carbon film cladding drill of present embodiment.
Fig. 4 is the key diagram representing relation between the scanning direction of laser beam in the present embodiment and the section shape of laser beam.
Fig. 5 is the schematic diagram of the excision trace representing the carbon film formed by laser beam in the present embodiment.
Fig. 6 is the side view of carbon film drill bit and the front view of blade that represent present embodiment.
Symbol description
1 carbon film cladding drill
2 tool base
2a cutting edge
2b matrix point of a knife
2c matrix rake face
Knife face after 2d matrix
3 carbon films
3a concave surface
3b carbon film point of a knife
4a rake face
Knife face after 4b
The angle that after θ 0 matrix rake face and matrix, knife face is formed
The angle that the concave surface of θ 1 rake face side and the concave surface of rear knife face side intersect to form
Detailed description of the invention
Below, referring to figs. 1 through Fig. 6, one embodiment of carbon film cladding drill of the present invention and manufacture method thereof is described.In addition, the part suitably changing engineer's scale in order to make each parts become identifiable design or the size that easily identifies as required is had in each accompanying drawing used in the following description.
As shown in Figure 1, the carbon film cladding drill 1 of present embodiment is drill bit knife face 2d and matrix point of a knife 2b being formed with carbon film 3 after the matrix rake face 2c, matrix of tool base 2.On the carbon film 3 of this carbon film cladding drill 1, the region after the region respectively on matrix rake face 2c and described matrix on knife face 2d is formed with the concave surface 3a of rake face side and the concave surface 3a of rear knife face side that cave in described tool base 2.In addition, the concave surface 3a of rake face side and the concave surface 3a of rear knife face side intersects on matrix point of a knife 2b, thus on carbon film 3, form carbon film point of a knife 3b.In addition, the angle θ 0 that after the angle θ 1 that the concave surface 3a of rake face side and the concave surface 3a of rear knife face side intersects to form is less than matrix rake face 2c and matrix, knife face 2d is formed.
As shown in Figure 2 A and 2 B, this carbon film cladding drill 1 such as has shank section 1a and is arranged on a pair carbon film point of a knife 3b of front end.And also have the blade 1b being arranged on drill body side, described blade is formed with two spiral grooves.
As shown in Figure 6, this carbon film cladding drill 1 can also possess and is being arranged at rear knife face 4a and the rake face 4b inner opening of leading section, and along two threaded hole 5a that auger spindle is communicated with.When cutting, by this threaded hole 5a to cutting position supply lubricating oil.
In this carbon film cladding drill 1, the thickness of carbon film 3 is not particularly limited, but is preferably 5 to 50 μm, is more preferably 8 to 20 μm.
Above-mentioned tool base 2 is formed by the carbide alloy of such as WC (tungsten carbide) etc.Diamond film, graphite film or DLC (DLC) film etc. that above-mentioned carbon film 3 is formed for utilizing the film forming such as CVD (chemical vapour deposition technique).
On the surface of the surface of the carbon film 3 in adjacent rake face 4a side and the carbon film 3 of rear knife face 4b side, be formed with the concave surface 3a of rake face side to tool base depression and the concave surface 3a of rear knife face side as mentioned above respectively.And, between the surface of the concave surface 3a of these rake faces 4a side and rear knife face 4b side with the crest line of carbon film point of a knife 3b for border contacts with each other.
Therefore, be formed at this pair concave surface 3a border carbon film 3 front end (cutting edge, carbon film point of a knife 3b) to be processed into by shape by concave surface 3a and the angle θ 1 (toe angle of the carbon film point of a knife 3b on the section in the face orthogonal with rake face 4a and rear knife face 4b) that the concave surface 3a of described rear knife face side intersects to form of described rake face side be less than matrix rake face 2c and matrix after knife face 2d the angle θ 0 that forms.In other words, the carbon film 3 be coated on matrix 2 is processed into " θ 1 < θ 0 ".In addition, it is less than 2 μm that the leading section being formed in the carbon film 3 on carbon film point of a knife 3b is processed into radius of curvature.
The preferred radius of curvature of concave surface is different according to the size of drill bit, but when bit diameter is 0.5 ~ 20mm, radius of curvature is preferably in the scope of 5 μm to 3000 μm.Preferred radius of curvature is 15 μm to 300 μm further.
The width of the above-mentioned concave surface on the direction orthogonal from the bearing of trend of carbon film point of a knife is different according to the size of drill bit, but when bit diameter is 0.5 ~ 20mm, the width of concave surface is preferably in the scope of 10 μm to 2000 μm.The width of preferred concave surface is 20 μm to 1000 μm further.
The degree of depth of above-mentioned concave surface is different according to the size of drill bit, but when bit diameter is 0.5 ~ 20mm, the degree of depth of concave surface is preferably in the scope of 2 μm to 15 μm.The degree of depth of preferred concave surface is 2 μm to 10 μm further.
Next, referring to figs. 1 through Fig. 6, the method for the carbon film cladding drill manufacturing present embodiment is described.
The manufacture method of the carbon film cladding drill 1 of present embodiment has: matrix preparatory process, prepares to have matrix point of a knife 2b and clip the tool base 2 of knife face 2d after the matrix rake face 2c and matrix that described matrix point of a knife 2b adjoins each other; Carbon film formation process, after the described matrix rake face 2c of described tool base 2, described matrix, knife face 2d and described matrix point of a knife 2b forms carbon film; And laser machining process, to described carbon film 3 illuminating laser beam, be processed to form the described carbon film 3 in the region after region on described matrix rake face 2c and described matrix on knife face 2d, to form the concave surface 3a of rake face side and the concave surface 3a of rear knife face side respectively in rake face side and rear knife face side.
As shown in Figure 5, in above-mentioned carbon film formation process, carbon film 3 is pre-formed as more swelling than other parts on matrix point of a knife 2b.The easy position of growing up of the upper carbon film 3 for being formed by chemical vapor deposition (CVD) of the matrix point of a knife 2b that after matrix rake face 2c and matrix, these two faces of knife face 2d are adjacent.Therefore, by by CVD film forming thicker apply carbon film 3, can as shown in Figure 5, carbon film 3 be formed as on matrix point of a knife 2b more swell than other parts.
The laser processing device 21 used in above-mentioned laser machining process is the device as shown in Figure 3 by processing carbon film 3 illuminating laser beam (laser) L be coated in tool base 2.This laser processing device 21 possesses: laser radiation mechanism 22, rotating mechanism 23, travel mechanism 24 and control part 25.Above-mentioned laser radiation mechanism 22 pulsed oscillation laser bundle L also to irradiate carbon film 3 with constant repetition rate and in the enterprising line scanning of carbon film 3.Above-mentioned rotating mechanism 23 has rotatable motor etc., and keeps by the coated tool base 2 of carbon film 3, and gives the rotary motion centered by auger spindle to the machined object with drill-shape.Above-mentioned travel mechanism 24 is placed with above-mentioned rotating mechanism 23.This travel mechanism 24 can change the position of described rotating mechanism under the state of the above-mentioned rotating mechanism 23 of mounting.Above-mentioned control part 25 suitably controls above-mentioned laser radiation mechanism 22, rotating mechanism 23 and travel mechanism 24 to carry out required Laser Processing.
Above-mentioned travel mechanism 24 possesses: can along the X-axis objective table portion 24x in the arbitrary direction and X-direction movement with plane-parallel; Can along vertical relative to above-mentioned X-direction and with the direction of plane-parallel and the Y-axis objective table portion 24y of Y-direction movement; And can along the z-stage portion 24z of with respect to the horizontal plane vertical direction and Z-direction movement.Above-mentioned Y-axis objective table portion 24y is arranged on above-mentioned X-axis objective table portion 24x.Above-mentioned z-stage portion 24z is arranged on above-mentioned Y-axis objective table portion 24y.This z-stage portion 24z is fixed with above-mentioned rotating mechanism 23, and can retaining tool matrix 2.
Above-mentioned laser radiation mechanism 22 possesses: LASER Light Source 26, galvanometer scanner 27 and CCD camera 28.Above-mentioned LASER Light Source 26 has optical system laser being pooled point-like, and is vibrated by the triggering signal of Q-switch and to become the laser of laser beam L.By above-mentioned galvanometer scanner 27, the laser beam L irradiated scans the carbon film of machined object.Above-mentioned CCD camera 28 takes the carbon film coated tool base 2 under held state.And, confirm the Working position of tool base 2.
The laser beam L penetrated by this laser radiation mechanism 22 is single mode, and the light distribution in beam profile is rendered as Gaussian Profile.That is, in above-mentioned section, mark the arbitrary line at the center by above-mentioned beam profile, and when measuring the light intensity on this straight line, the strongest in the light intensity of central point, and along with two outsides towards above-mentioned beam profile, light intensity decreasing.In addition, as shown in Figure 4, the beam profile in focal point is rendered as elliptical shape.
In addition, laser radiation mechanism 22 make the long axis direction of the scanning direction of laser beam L and oval beam profile or short-axis direction consistent.If this is because the scanning direction of laser beam L is not consistent with the long axis direction of beam profile or short-axis direction with above-mentioned elliptical shape, and be the direction tilted relative to major axis or minor axis, then can cause at scanning end section, machining shape tilts and produces skew.In addition, in the present embodiment, make the scanning direction of laser beam L consistent with the short-axis direction of above-mentioned beam profile.
Above-mentioned LASER Light Source 26 can use the light source of the laser of arbitrary wavelength that can irradiate 190 ~ 550nm, and such as in the present embodiment, use can be vibrated and be penetrated the light source of the laser (triple-frequency harmonics of Nd:YAG laser) that wavelength is 355nm.
In addition, when carbon film 3 is diamond film, laser beam L uses the ultraviolet laser that wavelength is below 360nm.
The wavelength of the LASER Light Source 26 in laser machining process is more preferably 190 ~ 550nm.More preferably 190 ~ 360nm.
Above-mentioned galvanometer scanner 27 is configured in directly over travel mechanism 24.In addition, above-mentioned CCD camera 28 is arranged with galvanometer scanner 27 is adjacent.
In above-mentioned laser machining process, be the laser beam L of Gaussian Profile from the front of matrix point of a knife 2b towards the light distribution of the carbon film 3 illumination beam section of the rake face 4a side near carbon film point of a knife 3b or rear knife face 4b side, and then carry out scanning along the bearing of trend of matrix point of a knife 2b and form concave surface 3a.Here, the front of matrix point of a knife 2b refers in the instrument sectional view of Fig. 5, the some when bisecting line at the angle intersected to form by knife face after matrix rake face and matrix being extended to the outside of tool base on this extended line.In addition, this extended line also can with matrix point of a knife 2b for fulcrum be extending to knife face lateral bend behind matrix rake face side or matrix less than in the scope of 90 ° more than 0 °.In addition, the bearing of trend of matrix point of a knife 2b refers to direction orthogonal with paper in Figure 5.
In addition, in laser machining process, from the front illuminating laser beam L of matrix point of a knife 2b, but control travel mechanism 24 or galvanometer scanner 27, such as relative to rake face 4a or rear knife face 4b with the angular illumination carbon film 3 of less than 20 °.In addition, along the scanning direction laser beam L that the bearing of trend of matrix point of a knife 2b is namely vertical with paper in FIG, and as shown in Figure 5, irradiate with grid-like (make the scan line of laser beam L slide, and make the overlapping state in respective scan line local) more than a line and below ten row.In addition, according to optically focused angle or the focal position of laser beam L, the number of scan line is suitably set.In the present embodiment, before optically focused, touch the wall of tool base 2 due to laser beam L thus be difficult to irradiate to desired position, being therefore set as below ten row.
In this laser machining process, because the light distribution in the beam profile of laser beam L has Gaussian Profile, the therefore center of laser beam L, intensity is higher, and the center working depth of laser beam L is darker, and periphery working depth is more shallow.Therefore, the power density being contacted with the laser beam L of the front end (cutting edge portion) of carbon film 3 will weaken.
In addition, likely the structure change that diamond becomes amorphous carbon etc. can be there is from about finished surface to 1 μm according to carbon film 3.
The amorphous carbon layer formed from finished surface using the thickness of less than 1 μm plays function when cutting as elastic layer, thus has the effect of collapsing cutter of the cutting edge 3b suppressing carbon film cladding drill 1.
So in the carbon film cladding drill 1 of present embodiment, the region after the region on the matrix rake face 2c in carbon film 3 and matrix on knife face 2d is formed with the concave surface 3a of rake face side to tool base depression and the concave surface 3a of rear knife face side respectively.In addition, the concave surface 3a of rake face side and the concave surface 3a of rear knife face side intersects thus on carbon film 3, forms carbon film point of a knife 3b on matrix point of a knife 2b.And, the angle θ 0 that after the angle θ 1 that the concave surface 3a of rake face side and the concave surface 3a of rear knife face side intersects to form is less than matrix rake face 2c and matrix, knife face 2d is formed.By having said structure, the carbon film cladding drill 1 of present embodiment can have cutting edge sharper than ever.That is, as shown in Figures 1 and 5, the surface of the rake face side contacted with carbon film point of a knife 3b and the carbon film 3 of rear knife face side subsides relative to the elongated surfaces of rake face 4a and rear knife face 4b and by concave surface.Therefore, the carbon film 3 of carbon film point of a knife 3b part is formed sharp-pointed shape, thus can obtain sharper cutting edge compared with when formation as chamfering in the past.
In addition, the manufacture method of this carbon film cladding drill 1, in laser machining process, is rendered as the laser beam L of Gaussian Profile towards the light distribution the carbon film 3 illumination beam section of the rake face 4a side near carbon film point of a knife 3b or rear knife face 4b side from the front of matrix point of a knife 2b.And, scan above-mentioned laser beam L to form concave surface 3a further by the bearing of trend along matrix point of a knife 2b.By having said structure, in the manufacture method of this carbon film cladding drill 1, as shown in Figure 5, the section of the excision trace of the carbon film 3 that the laser beam L irradiated by the front from matrix point of a knife 2b is formed is rendered as arc-shaped, thus can form concave surface 3a accurately along matrix point of a knife 2b.
In addition, the outer circumferential side due to laser beam L is contacted with the leading section (cutting edge portion) of carbon film 3, therefore, it is possible to reduce the power density of the laser beam L in this leading section.Consequently can prevent the leading section of carbon film 3 (cutting edge portion) from being become obtuse angle by too excising.
And then, in carbon film formation process, by being pre-formed as more swelling than other parts on matrix point of a knife 2b by carbon film 3, thus the chipping allowance of the carbon film 3 in laser machining process can be set significantly.Consequently by the manufacture method of this carbon film cladding drill 1, darker concave surface 3a and sharper cutting edge can be formed.
[embodiment]
Next, with reference to Fig. 5, the embodiment by the carbon film cladding drill of the manufacture method actual fabrication of the carbon film cladding drill of above-mentioned present embodiment is described.
In the present embodiment, by can illumination wavelength be 262nm (four times of ripples of Nd:YLF laser (first-harmonic: wavelength is 1047nm)), repetition rate is 10kHz, the average above-mentioned laser processing device exporting laser for 0.1W, laser is converged by f θ lens (focal distance f=150mm), and use galvanometer scanner with the sweep speed of 25mm/s according to identical track scanning four times, thus to the processing that the cutting edge 2a of the drill bit 1 implemented as carbon film 3 by the tool fife formed by vapor-phase synthesis makes it sharp.
In addition, as preparation, as shown in Figure 5, in the tool base 2 of hard alloy, form the diamond film that average film thickness is 17 μm by vapor-phase synthesis, and the ridge line section (carbon film point of a knife 3b) be namely made up of rear knife face 4b and rake face 4a at cutting edge 2a forms diamond film and carbon film 3 in the mode thicker than average film thickness.In addition, Raman spectroscopy is used to the mensuration of carbon film film quality.
In addition, as mentioned above, the part of cutting edge 2a due to film forming position more than plane, therefore film forming has the thicker and diamond film of rounding (carbon film 3).
Such as, as shown in Figure 1, first the average carbon film thickness in the region on the rake face 4a of the distance more than 100 μm from the matrix point of a knife 2b of tool base 2 along rake face 4a is defined as average film thickness ta.Then, the average carbon film thickness in the region on the rake face within the distance 50 μm from matrix point of a knife 2b along rake face 4a is defined as average film thickness te.The thick te of this average carbon film comprises above-mentioned thicker before Laser Processing and a part for the part of rounding.
In the present embodiment, above-mentioned average film thickness ta is set to more than 5 μm.Further, to become the mode film forming diamond film of the relation of " te > ta ".
Then, rake face 4a and rear knife face 4b is made to tilt 10 ° relative to the direction of illumination of laser beam L, and from the crest line scanning laser beam L abreast of all directions and matrix point of a knife 2b.In the case, laser beam L scans abreast with the bearing of trend of the carbon film point of a knife 3b finally formed.As shown in Figure 5, initial laser beam irradiation target location P1 be set in from the thicker of extended line 4d, 4c of the average height (not comprising the part of the thicker of the part being formed in cutting edge 2a and rounding) of rake face 4a and rear knife face 4b and cutting edge 2a part and the intersection point on carbon film 3 surface of rounding to the position of the lateral offset 4 μm of carbon film point of a knife 3b.
In the carbon film cladding drill 1 made so using above-mentioned manufacture method, when the anterior angle of tool base 2 is 28 °, Laser Processing is carried out to carbon film 3 and in the carbon film coated 1 that formed, anterior angle is 30 °, and anterior angle keeps larger angle.
Carry out cutting test to the carbon film cladding drill of embodiments of the invention, table 1 illustrates the result measuring the Drilling operation life-span.In addition, as comparative example, the result of the drill bit in the past coated by carbon film (diamond film) without Laser Processing being carried out to same mensuration is shown in Table 1 in the lump.In addition, used as workpiece (being cut thing) by the CFRP (carbon fibre reinforced plastic) with the carbon fiber laminar structure orthogonal with thermosetting epoxy resin, processing conditions during boring is as shown in table 1.In addition, judging service life carries out according to the number of drills that burr or splitting occur.
[table 1]
From this result, burr or splitting is there is in the carbon film cladding drill of comparative example when number of drills is 350 times, on the other hand, the carbon film cladding drill of the present embodiment is burr or splitting do not occur before 520 times in number of drills, thus confirms to reduce cutting resistance to realize the high life by sharp cutting edge.
In addition, technical scope of the present invention is not limited to above-mentioned embodiment, can carry out various change without departing from the spirit and scope of the present invention.
Because carbon film cladding drill of the present invention has sharp point of a knife shape, because this reducing cutting resistance.The service life of this carbon film cladding drill is result extend.
Claims (10)
1. a carbon film cladding drill (1), is characterized in that having:
Tool base (2), knife face (2d) after there is matrix point of a knife (2b) and clipping matrix rake face (2c) and matrix that described matrix point of a knife (2b) adjoins each other; And
Carbon film (3), is formed in after described matrix point of a knife (2b), described matrix rake face (2c) and described matrix on knife face (2d),
On described carbon film (3), region after region on described matrix rake face (2c) and described matrix on knife face (2d) is formed with the concave surface (3a) of the rake face side of caving in described tool base and the concave surface (3a) of rear knife face side respectively
The concave surface (3a) of described rake face side and the concave surface of described rear knife face side in the upper intersection of described matrix point of a knife (2b), thus above form carbon film point of a knife (3b) at described carbon film (3),
The angle (θ 0) that after the angle (θ 1) that the concave surface (3a) of described rake face side and the concave surface (3a) of described rear knife face side intersect to form is less than described matrix rake face (2c) and described matrix, knife face (2d) is formed.
2. carbon film cladding drill according to claim 1 (1), described carbon film is diamond film.
3. carbon film cladding drill according to claim 1 and 2 (1), the section of the concave surface (3a) of the described rake face side formed by the face orthogonal with described carbon film point of a knife (3b) and the concave surface of described rear knife face side is circular shape.
4. carbon film cladding drill according to claim 3 (1), the radius of curvature of the circular shape of the section of the concave surface (3a) of described rake face side and the concave surface of described rear knife face side is in the scope of 5 μm to 3000 μm.
5. carbon film cladding drill according to claim 4 (1), the concave surface (3a) of described rake face side and the concave surface of described rear knife face side orthogonal with carbon film point of a knife and along the width on the direction in respective face in the scope of 10 μm to 2000 μm.
6. carbon film cladding drill according to claim 4 (1), the degree of depth of the concave surface (3a) of described rake face side and the concave surface (3a) of described rear knife face side is in the scope of 2 μm to 15 μm.
7. carbon film cladding drill according to claim 4 (1), the width on the direction orthogonal with carbon film point of a knife of the concave surface (3a) of described rake face side and the concave surface of described rear knife face side in the scope of 10 μm to 2000 μm,
The degree of depth of the concave surface (3a) of described rake face side and the concave surface (3a) of described rear knife face side is in the scope of 2 μm to 15 μm.
8. a manufacture method for carbon film cladding drill, is characterized in that, has:
Matrix preparatory process, prepares to have matrix point of a knife (2b) and clips the tool base (2) of knife face (2d) after the matrix rake face (2c) and matrix that described matrix point of a knife (2b) adjoins each other;
Carbon film formation process, after the described matrix rake face (2c) of described tool base (2), described matrix, knife face (2d) and described matrix point of a knife (2b) forms carbon film; And
Laser machining process, to described carbon film (3) illuminating laser beam, be processed to form the described carbon film (3) in the region after region on described matrix rake face (2c) and described matrix on knife face (2d), thus form the concave surface (3a) of rake face side and the concave surface (3a) of rear knife face side in rake face side and rear knife face side respectively
The concave surface (3a) of described rake face side and described rear knife face side intersects and forms carbon film point of a knife (3b) on described matrix point of a knife,
In described laser machining process, the light distribution in the beam profile of described laser beam is rendered as Gaussian Profile,
Described carbon film from the front of described carbon film point of a knife towards the described rake face side near described carbon film point of a knife or described rear knife face side irradiates described laser beam,
Described laser beam scans along the bearing of trend of described carbon film point of a knife.
9. the manufacture method of carbon film cladding drill according to claim 8,
In described carbon film formation process, applied by CVD film forming, described carbon film is formed as on described matrix point of a knife more swell than other parts.
10. the manufacture method of carbon film cladding drill according to claim 8 or claim 9,
Described carbon film is diamond film,
The wavelength of described laser beam is below 360nm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010289039 | 2010-12-26 | ||
| JP2010-289039 | 2010-12-26 |
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| CN102554319A CN102554319A (en) | 2012-07-11 |
| CN102554319B true CN102554319B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205483664U Withdrawn - After Issue CN202539640U (en) | 2010-12-26 | 2011-12-23 | Carbon-film-coated drilling bit |
| CN201110439676.7A Expired - Fee Related CN102554319B (en) | 2010-12-26 | 2011-12-23 | Carbon film cladding drill and manufacture method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205483664U Withdrawn - After Issue CN202539640U (en) | 2010-12-26 | 2011-12-23 | Carbon-film-coated drilling bit |
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| JP (1) | JP5899905B2 (en) |
| CN (2) | CN202539640U (en) |
Families Citing this family (3)
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|---|---|---|---|---|
| JP5899905B2 (en) * | 2010-12-26 | 2016-04-06 | 三菱マテリアル株式会社 | Carbon film-coated drill and manufacturing method thereof |
| JP5873532B2 (en) * | 2014-07-08 | 2016-03-01 | ユニオンツール株式会社 | Drilling tool |
| JP6928248B2 (en) * | 2017-09-29 | 2021-09-01 | 三菱マテリアル株式会社 | Diamond coated rotary cutting tool |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218427A (en) * | 1996-05-15 | 1999-06-02 | 钴碳化钨硬质合金公司 | Diamond coated cutting member and method of making the same |
| EP2006040A2 (en) * | 2006-03-28 | 2008-12-24 | Kyocera Corporation | Cutting tool, method for producing same and cutting method |
| CN202539640U (en) * | 2010-12-26 | 2012-11-21 | 三菱综合材料株式会社 | Carbon-film-coated drilling bit |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04210315A (en) * | 1990-08-10 | 1992-07-31 | Nachi Fujikoshi Corp | Rotary cutting tool |
| JP2592761B2 (en) * | 1993-04-28 | 1997-03-19 | 大阪ダイヤモンド工業株式会社 | Rotary cutting tool and manufacturing method thereof |
| JP3519431B2 (en) * | 1993-09-14 | 2004-04-12 | 三菱マテリアル神戸ツールズ株式会社 | Hard carbon film coated drill |
| JP3602468B2 (en) * | 2001-05-02 | 2004-12-15 | 三菱マテリアル神戸ツールズ株式会社 | Tool for processing optical fiber connection terminal and method for processing optical fiber connection terminal using the tool |
| JP3477182B2 (en) * | 2001-06-15 | 2003-12-10 | オーエスジー株式会社 | Diamond coated cutting tool |
| JP3477183B2 (en) * | 2001-06-15 | 2003-12-10 | オーエスジー株式会社 | Diamond coated cutting tool |
| US7455485B2 (en) * | 2005-08-31 | 2008-11-25 | Robert Bosch Gmbh | Cutout bit for use with rotary tool |
| JP2008006542A (en) * | 2006-06-29 | 2008-01-17 | Sumitomo Electric Hardmetal Corp | Cutting edge changing type cutting tip |
| JP5336095B2 (en) * | 2007-02-21 | 2013-11-06 | サイバーレーザー株式会社 | Laser diamond cutting tool and manufacturing method thereof |
| JP5105153B2 (en) * | 2007-06-27 | 2012-12-19 | 三菱マテリアル株式会社 | Manufacturing method of processing tool and processing tool |
| JP5224331B2 (en) * | 2008-02-28 | 2013-07-03 | 富山県 | Cutting tool and method for producing waviness shape |
| JP2010260115A (en) * | 2009-04-30 | 2010-11-18 | Sumitomo Electric Ind Ltd | Tool for drilling hole in fiber-reinforced composite material |
-
2011
- 2011-12-22 JP JP2011281969A patent/JP5899905B2/en not_active Expired - Fee Related
- 2011-12-23 CN CN2011205483664U patent/CN202539640U/en not_active Withdrawn - After Issue
- 2011-12-23 CN CN201110439676.7A patent/CN102554319B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218427A (en) * | 1996-05-15 | 1999-06-02 | 钴碳化钨硬质合金公司 | Diamond coated cutting member and method of making the same |
| EP2006040A2 (en) * | 2006-03-28 | 2008-12-24 | Kyocera Corporation | Cutting tool, method for producing same and cutting method |
| CN202539640U (en) * | 2010-12-26 | 2012-11-21 | 三菱综合材料株式会社 | Carbon-film-coated drilling bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102554319A (en) | 2012-07-11 |
| JP5899905B2 (en) | 2016-04-06 |
| CN202539640U (en) | 2012-11-21 |
| JP2012148399A (en) | 2012-08-09 |
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