CN202539640U - Carbon-film-coated drilling bit - Google Patents
Carbon-film-coated drilling bit Download PDFInfo
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- CN202539640U CN202539640U CN2011205483664U CN201120548366U CN202539640U CN 202539640 U CN202539640 U CN 202539640U CN 2011205483664 U CN2011205483664 U CN 2011205483664U CN 201120548366 U CN201120548366 U CN 201120548366U CN 202539640 U CN202539640 U CN 202539640U
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Abstract
The utility model provides a carbon-film-coated drilling bit which is coated by carbon films such as diamond films and is provided with sharper cutting edges than existing drilling bits. The utility model further provides a high-precision manufacture method of the carbon-film-coated drilling bit. The carbon-film-coated drilling bit is characterized in that concaves are formed on the carbon films on matrix rake face region and on matrix flank face region. The concaves are crossed on a matrix tool nose to form a carbon-film-coated tool nose. Crossing angles of the concaves are smaller than an angle (theta 0) formed by the matrix rake face (2c) and the matrix flank face (2d).
Description
Technical field
The utility model relates to a kind ofly can process the carbon film-coated drill bit that is cut material tartly.
Background technology
Coating by diamond film in the diamond coated cutting tool on cutting edge surface; Proposed the roughly arc sections that attrition process for example forms in the past on cutting edge, and become mode below 40 ° that the technology (with reference to patent documentation 1) of chamfering is set partly with the angle of arc sections roughly.And, the above-mentioned roughly arc sections of attrition process is also proposed, so that relief angle is less than the technology (with reference to patent documentation 2) of original angle.
In addition, the cutting edge in this specification represent to comprise the point of a knife of cutting element, the zone of the part of the part of the rake face that joins with point of a knife and the back knife face that joins with point of a knife.
As the Ginding process of above-mentioned diamond film coated cutting tool, the laser Ginding process that patent documentation 3 is put down in writing is proposed.This laser Ginding process in the scan laser focus (making it mobile), moves diamond overlay film itself on the surface of diamond overlay film.Like this, through focus and the two relative motion of diamond overlay film that makes laser, remove the protuberance that is formed on diamond overlay film surface.In addition, the manufacturing approach of the machining tool put down in writing of patent documentation 4 to the diamond overlay film vertically illumination wavelength be that the laser of 266nm comes machining tool is processed.
Patent documentation 1: No. 3477182 communique of Japan Patent
Patent documentation 2: No. 3477183 communique of Japan Patent
Patent documentation 3: No. 3096943 communique of Japan Patent
Patent documentation 4: Japan Patent discloses the 2009-6436 communique
Leave following problem in the above-mentioned prior art.
The first, when forming cutting edge,, therefore in process, can produce the metamorphosis of emery wheel because diamond is harder than emery wheel through grinding.The result is difficult to carry out accurately required shape processing.
The second, the limit makes laser and diamond overlay film carry out the relative motion limit jointly to carry out moving of workpiece (being cut thing) that the scan laser method for processing further needs to carry out according to the form of processing object thing.Therefore, the Position Control of the focus of laser and diamond overlay film is more complicated.
Three, to the diamond overlay film vertically in the processing method of irradiating laser, the form after the processing is easy to reflect the undulations of overlay film before the processing.Therefore, the overlay film before the processing need form uniform diamond overlay film.So high-precision processing is difficult.
Four, when forming the diamond overlay film on the point of a knife at the cutting edge of drill bit etc., because corresponding to the thickness of diamond overlay film, overlay film swell formation on point of a knife, so is difficult to process point of a knife.Therefore, be difficult to make the drill bit that applies and have sharp cutting edge with the diamond overlay film in the past.
The utility model content
The utility model is accomplished in view of aforementioned problems, and its purpose is to provide a kind of carbon film-coated drill bit, and it is by carbon film-coated such as diamond overlay films, and has than sharper in the past cutting edge.
The utility model adopts following structure in order to solve said problem.That is, the carbon film-coated drill bit of the first aspect of the utility model is characterized in that having: tool base has the matrix point of a knife and clips knife face behind matrix rake face that said matrix point of a knife adjoins each other and the matrix; And carbon film; Be formed on behind said matrix point of a knife, said matrix rake face and the said matrix on the knife face; On said carbon film; Zone behind zone on the said matrix rake face and said matrix on the knife face is formed with the concave surface to the concave surface of the rake face side of said tool base depression and back knife face side respectively, thereby the concave surface of the concave surface of said rake face side and said back knife face side intersects on said matrix point of a knife and on said carbon film, forms the carbon film point of a knife, the concave surface of said rake face side and said after the angle that intersects to form of the concave surface of the knife face side angle that knife face constituted after less than said matrix rake face and said matrix; Said carbon film is a diamond film
The radius of curvature of the circular shape of the section of the concave surface of the concave surface 3a of said rake face side and said back knife face side is in the scope of 5 μ m to 3000 μ m.
In this carbon film-coated drill bit, on the carbon film in the zone on the knife face behind zone on the matrix rake face and the matrix, be formed with the concave surface of the rake face side that caves in to tool base and the concave surface of back knife face side respectively.And then the concave surface of rake face side intersects on the matrix point of a knife with the concave surface of back knife face side, thereby on carbon film, forms the carbon film point of a knife.And then, the angle that the concave surface of the concave surface of rake face side and back knife face side the intersects to form angle that knife face constituted after less than matrix rake face and matrix.Through having above structure, above-mentioned carbon film-coated drill bit has than sharper in the past cutting edge.
That is, the carbon film surface of the part (cutting edge) through comprising the carbon film point of a knife subsides with respect to the elongated surfaces of rake face and back knife face and by concave surfaceization, thereby can form the carbon film of carbon film point of a knife shrilly.The result can access the sharper cutting edge of chamfering that forms than through existing method in above-mentioned carbon film-coated drill bit.
In addition, in above-mentioned carbon film-coated drill bit, the concave surface of the concave surface of said rake face side and said back knife face side with said carbon film point of a knife quadrature and can be in the scope of 10 μ m to 2000 μ m along the width on the direction of separately face.
In addition, in above-mentioned carbon film-coated drill bit, the degree of depth of the concave surface 3a of the concave surface 3a of said rake face side and said back knife face side can be in the scope of 2 μ m to 15 μ m.
In addition; In above-mentioned carbon film-coated drill bit; The concave surface of the concave surface 3a of said rake face side and said back knife face side with the direction of point of a knife quadrature on width can be in the scope of 10 μ m to 2000 μ m, the degree of depth of the concave surface 3a of the concave surface 3a of said rake face side and said back knife face side can be in the scope of 2 μ m to 15 μ m.
According to the aspect of the utility model, the effect below realizing.
In the carbon film-coated drill bit of the first aspect of the utility model, on the carbon film in the zone on the knife face behind zone on the matrix rake face and the matrix, be formed with respectively to the concave surface of the rake face side of tool base depression and the concave surface of back knife face side.And then, thereby the concave surface of the concave surface of rake face side and back knife face side intersects formation carbon film point of a knife on carbon film on the matrix point of a knife.And then, the angle that the concave surface of the concave surface of rake face side and back knife face side the intersects to form angle that knife face constituted after less than matrix rake face and matrix.Through having above structure, above-mentioned carbon film-coated drill bit can have than sharper in the past cutting edge.
Therefore, the carbon film-coated drill bit excellent in abrasion resistance that not only carbon film brought of the utility model, and also sharpness is also very excellent, also is suitable for the drill bit as nonferrous metal and composite processing usefulness.
Description of drawings
Fig. 1 is the amplification view of major part that is illustrated in cutting edge and the Laser Processing operation of carbon film-coated drill bit in the embodiment of carbon film-coated drill bit of the utility model.
Fig. 2 A is the side view of the carbon film-coated drill bit of this embodiment of expression.
Fig. 2 B is the front view of blade of the carbon film-coated drill bit of this embodiment of expression.
Fig. 3 is the schematic overall structure figure that is illustrated in the laser processing device that uses in the manufacturing of carbon film-coated drill bit of this embodiment.
Fig. 4 is illustrated in the key diagram that concerns between the section shape of scanning direction and laser beam of laser beam in this embodiment.
Fig. 5 is illustrated in the sketch map that passes through the excision trace of the formed carbon film of laser beam in this embodiment.
Fig. 6 A is the side view of the carbon film drill bit of this embodiment of expression; Fig. 6 B is the front view of blade.
Symbol description
1 carbon film-coated drill bit
2 tool base
The 2a cutting edge
2b matrix point of a knife
2c matrix rake face
Knife face behind the 2d matrix
3 carbon films
The 3a concave surface
3b carbon film point of a knife
The 4a rake face
Knife face behind the 4b
The angle that knife face constituted behind θ 0 matrix rake face and the matrix
The angle that θ 1 is intersected to form by the concave surface of the concave surface of rake face side and back knife face side
The specific embodiment
Below, referring to figs. 1 through Fig. 6 B one embodiment of the carbon film-coated drill bit of the utility model is described.In addition, have in each accompanying drawing that in following explanation, uses in order each parts to be become to discern or the size of identification easily and suitably change the part of engineer's scale as required.
As shown in Figure 1, the carbon film-coated drill bit of this embodiment 1 is for being formed with the drill bit of carbon film 3 on knife face 2d and matrix point of a knife 2b behind the matrix rake face 2c of tool base 2, the matrix.On the carbon film 3 of this carbon film-coated drill bit 1, the zone on knife face 2d behind zone on the matrix rake face 2c and the said matrix is formed with the concave surface 3a of the rake face side that caves in to said tool base 2 and the concave surface 3a of back knife face side respectively.In addition, the concave surface 3a of the concave surface 3a of rake face side and back knife face side intersects on matrix point of a knife 2b, thereby on carbon film 3, forms carbon film point of a knife 3b.In addition, the angle θ 1 that intersects to form of the concave surface 3a of the concave surface 3a of rake face side and back knife face side less than matrix rake face 2c and matrix after the angle θ 0 that constituted of knife face 2d.
Shown in Fig. 2 A and Fig. 2 B, this carbon film-coated drill bit 1 for example has the 1a of handle of a knife portion and is arranged on a pair of carbon film point of a knife 3b of front end.And, also having the blade 1b that is arranged on the drill body side, this blade 1b is formed with two spiral grooves.
Shown in Fig. 6 A and Fig. 6 B, this carbon film-coated drill bit 1 can also possess at back knife face 4a that is arranged at leading section and rake face 4b inner opening, and two threaded hole 5a that are communicated with along auger spindle.In when cutting, through this threaded hole 5a to cutting position supplying lubricating oil.
In this carbon film-coated drill bit 1, the thickness of carbon film 3 is not particularly limited, but is preferably 5 to 50 μ m, more preferably 8 to 20 μ m.
Above-mentioned tool base 2 is formed by the carbide alloy of for example WC (tungsten carbide) etc.Above-mentioned carbon film 3 becomes film formed diamond film, graphite film or DLC (DLC) film etc. for utilizing CVD (chemical vapour deposition technique) etc.
On the surface of the surface of the carbon film 3 of adjacent rake face 4a side and the carbon film 3 of back knife face 4b side, be formed with respectively as stated to the concave surface 3a of the rake face side of tool base depression and the concave surface 3a of back knife face side.And the crest line with carbon film point of a knife 3b between the surface of the concave surface 3a of these rake faces 4a side and back knife face 4b side is that the border is in contact with one another.
Therefore; Angle θ 1 that the concave surface 3a by the concave surface 3a of said rake face side and said back knife face side of the front end (cutting edge, carbon film point of a knife 3b) of the carbon film 3 on the border that is formed at this a pair of concave surface 3a intersects to form (with the face of rake face 4a and back knife face 4b quadrature in section on the front end angle of carbon film point of a knife 3b) be processed into less than matrix rake face 2c and matrix by shape after the angle θ 0 that constituted of knife face 2d.In other words, the carbon film 3 that is coated on the matrix 2 is processed into " θ 1＜θ 0 ".In addition, it is below the 2 μ m that the leading section that is formed on the carbon film 3 on the carbon film point of a knife 3b is processed into radius of curvature.
The preferred radius of curvature of concave surface is according to the size of drill bit and difference, but when bit diameter was 0.5～20mm, radius of curvature was preferably in the scope of 5 μ m to 3000 μ m.Further preferred radius of curvature is 15 μ m to 300 μ m.
With the direction of the bearing of trend quadrature of carbon film point of a knife on the width of above-mentioned concave surface according to the size of drill bit and different, but when bit diameter was 0.5～20mm, the width of concave surface was preferably in the scope of 10 μ m to 2000 μ m.The width of further preferred concave surface is 20 μ m to 1000 μ m.
The degree of depth of above-mentioned concave surface is according to the size of drill bit and difference, but when bit diameter was 0.5～20mm, the degree of depth of concave surface was preferably in the scope of 2 μ m to 15 μ m.The degree of depth of further preferred concave surface is 2 μ m to 10 μ m.
Next, referring to figs. 1 through Fig. 6 B, the manufacturing of the carbon film-coated drill bit of this embodiment is described.
The carbon film-coated drill bit 1 of this embodiment has: the matrix preparatory process, prepare to have matrix point of a knife 2b and the tool base 2 that clips knife face 2d behind matrix rake face 2c that said matrix point of a knife 2b adjoins each other and the matrix; Carbon film forms operation, on knife face 2d behind the said matrix rake face 2c of said tool base 2, the said matrix and said matrix point of a knife 2b, forms carbon film; And Laser Processing operation; To said carbon film 3 illuminating laser beams; Be processed to form the said carbon film 3 in the zone on knife face 2d behind zone on the said matrix rake face 2c and the said matrix, to form the concave surface 3a of rake face side and the concave surface 3a of back knife face side respectively in rake face side and back knife face side.
As shown in Figure 5, form in the operation at above-mentioned carbon film, carbon film 3 is pre-formed to swelling more than other parts on matrix point of a knife 2b.It behind matrix rake face 2c and the matrix position of growing up easily through the carbon film 3 that chemical vapor deposition (CVD) forms.Therefore, through applying carbon film 3 than heavy back by the CVD film forming, can be as shown in Figure 5, carbon film 3 formed than other parts on matrix point of a knife 2b swell more.
The laser processing device 21 that in above-mentioned Laser Processing operation, uses is the device through carbon film 3 illuminating laser beams (laser) L that is coated on the tool base 2 is processed as shown in Figure 3.This laser processing device 21 possesses: laser radiation mechanism 22, rotating mechanism 23, travel mechanism 24 and control part 25.Above-mentioned laser radiation laser 22 pulsed oscillation laser bundle L also shine carbon film 3 and in carbon film 3 enterprising line scannings with constant repetition rate.Above-mentioned rotating mechanism 23 has rotatable motor etc., and keeps the tool base 2 that coated by carbon film 3, and the machined object with drill-shape is given with the auger spindle is rotatablely moving of center.Upload in above-mentioned travel mechanism 24 and to be equipped with above-mentioned rotating mechanism 23.The position that changes said rotating mechanism under the state of putting above-mentioned rotating mechanism 23 can carried in this travel mechanism 24.Above-mentioned control part 25 is suitably controlled above-mentioned laser radiation mechanism 22, rotating mechanism 23 and travel mechanism 24 in order to carry out required Laser Processing.
Above-mentioned travel mechanism 24 possesses: can the edge arbitrarily direction parallel with horizontal plane be the X axle objective table 24x of portion that directions X moves; Can be the Y axle objective table 24y of portion that the Y direction moves along and with horizontal plane parallel direction vertical with respect to above-mentioned directions X; And can be the Z axle objective table 24z of portion that the Z direction moves along with respect to the horizontal plane vertical direction.The above-mentioned Y axle objective table 24y of portion is arranged on the above-mentioned X axle objective table 24x of portion.The above-mentioned Z axle objective table 24z of portion is arranged on the above-mentioned Y axle objective table 24y of portion.On this Z axle objective table 24z of portion, be fixed with above-mentioned rotating mechanism 23, and can keep tool base 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 the optical system that laser is pooled point-like, and vibrates through the triggering signal of Q-switch and to become the laser of laser beam L.Through above-mentioned galvanometer scanner 27, the carbon film of the laser beam L that is shone scanning machined object.The carbon film-coated tool base 2 that above-mentioned CCD camera 28 is taken under the held state.And, the Working position of affirmation tool base 2.
The laser beam L that is penetrated by this laser radiation mechanism 22 is a single mode, and the light distribution on beam profile is rendered as Gaussian distribution.That is, in above-mentioned section, mark arbitrary line, and when measuring the light intensity on this straight line through the center of above-mentioned beam profile, the strongest in the light intensity of central point, and along with towards two outsides of 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, it is consistent with the long axis direction or the short-axis direction of oval-shaped beam profile that laser radiation mechanism 22 makes the scanning direction of laser beam L.This is because if the scanning direction of laser beam L is not consistent with the long axis direction or the short-axis direction of above-mentioned beam profile with elliptical shape; And be the direction with respect to major axis or minor axis inclination; Then can cause in the scanning end portion, machining shape tilts and produces skew.In addition, in this 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 shine 190～550nm, for example in this embodiment, uses and can vibrate and penetrate the light source of wavelength as the laser (triple-frequency harmonics of Nd:YAG laser) of 355nm.
In addition, when carbon film 3 was diamond film, laser beam L used wavelength to be the ultraviolet laser below the 360nm.
The wavelength of the LASER Light Source 26 in the Laser Processing operation is 190～550nm more preferably.Further be preferably 190～360nm.
Above-mentioned galvanometer scanner 27 be configured in travel mechanism 24 directly over.In addition, above-mentioned CCD camera 28 is provided with galvanometer scanner 27 adjacency.
In above-mentioned Laser Processing operation; The light distribution of the carbon film 3 illumination beam sections of near rake face 4a side from the place ahead of matrix point of a knife 2b carbon film point of a knife 3b or back knife face 4b side is the laser beam L of Gaussian distribution, and then scans and form concave surface 3a along the bearing of trend of matrix point of a knife 2b.Here, the place ahead of matrix point of a knife 2b is meant in the instrument cutaway view of Fig. 5, the point the when bisecting line at the angle that knife face behind matrix rake face and the matrix is intersected to form extends to the outside of tool base on this extended line.In addition, this extended line also can with matrix point of a knife 2b be fulcrum surpass 0 ° and less than 90 ° scope in behind matrix rake face side or matrix knife face lateral bending Qu Yanchang.In addition, the bearing of trend of matrix point of a knife 2b is meant in Fig. 5 the direction with the paper quadrature.
In addition, in the Laser Processing operation, from the place ahead illuminating laser beam L of matrix point of a knife 2b, control travel mechanism 24 or galvanometer scanner 27, for example with respect to rake face 4a or back knife face 4b with the angular illumination carbon film 3 below 20 °.In addition; Along the i.e. scanning direction laser beam L vertical in Fig. 1 of the bearing of trend of matrix point of a knife 2b with paper; And it is as shown in Figure 5; Laser scanning line shines with grid-like (scan line of laser beam L is slided, and make the local overlapping state of scan line separately) more than the delegation and below ten row.In addition, according to optically focused angle or the focal position of laser beam L, suitably set the number of scan line.In this embodiment, the wall that before optically focused, touches tool base 2 owing to laser beam L is difficult to therefore be set at below ten row to the irradiation of desirable position.
Therefore in this Laser Processing operation, because the light distribution on the beam profile of laser beam L has Gaussian distribution, the closer to the center of laser beam L; Intensity is high more, and the closer to the center of laser beam L, working depth is dark more; And the closer to periphery, working depth is shallow more.Therefore, the power density of laser beam L that is contacted with the front end (cutting edge part) of carbon film 3 will weaken.
In addition, according to carbon film 3, the structural change that diamond becomes amorphous carbon etc. might take place from about finished surface to the 1 μ m.
When cutting, bring into play function with the amorphous carbon layer that the thickness below the 1 μ m forms from finished surface, thereby have the effect of collapsing cutter of the cutting edge 3b that suppresses carbon film-coated drill bit 1 as elastic layer.
So in the carbon film-coated drill bit 1 of this embodiment, the zone behind zone on the matrix rake face 2c in carbon film 3 and the matrix on the knife face 2d is formed with the concave surface 3a to the concave surface 3a of the rake face side of tool base depression and back knife face side respectively.In addition, the concave surface 3a of the concave surface 3a of rake face side and back knife face side intersects on matrix point of a knife 2b, thereby on carbon film 3, forms carbon film point of a knife 3b.And, the angle θ 1 that the concave surface 3a of the concave surface 3a of rake face side and back knife face side intersects to form less than matrix rake face 2c and matrix after the angle θ 0 that constituted of knife face 2d.Through having said structure, the carbon film-coated drill bit 1 of this embodiment can have than sharper in the past cutting edge.That is, like Fig. 1 and shown in Figure 5, the surface of the carbon film 3 of rake face side that contacts with carbon film point of a knife 3b and back knife face side subsides with respect to the elongated surfaces of rake face 4a and back knife face 4b and by concave surfaceization.Therefore, the carbon film 3 of carbon film point of a knife 3b part is formed sharp-pointed shape, thereby can access sharper cutting edge with forming as compare during in the past chamfering.
In addition, this carbon film-coated drill bit 1 is rendered as the laser beam L of Gaussian distribution from the light distribution of the place ahead on the carbon film 3 illumination beam sections of near rake face 4a side the carbon film point of a knife 3b or back knife face 4b side of matrix point of a knife 2b in the Laser Processing operation.And, further scan above-mentioned laser beam L and form concave surface 3a through bearing of trend along matrix point of a knife 2b.Through having said structure; In the manufacturing approach of this carbon film-coated drill bit 1; As shown in Figure 5 and since from the place ahead of matrix point of a knife 2b the section of the excision trace of the formed carbon film 3 of laser beam L of irradiation be rendered as circular-arc, thereby can form concave surface 3a accurately along matrix point of a knife 2b.
In addition, because the outer circumferential side of laser beam L is contacted with the leading section (cutting edge part) of carbon film 3, therefore can reduce the power density of the laser beam L in this leading section.The leading section (cutting edge part) that consequently can prevent carbon film 3 is too excised and is become the obtuse angle.
And then, in carbon film forms operation, through carbon film 3 being pre-formed for swelling more, thereby the chipping allowance of the carbon film 3 in the Laser Processing operation can be set significantly on matrix point of a knife 2b than other parts.Consequently, can form darker concave surface 3a and sharper cutting edge through the manufacturing approach of this carbon film-coated drill bit 1.
[embodiment]
Next, with reference to the manufacturing of Fig. 5 explanation through the carbon film-coated drill bit of above-mentioned embodiment, the embodiment of the carbon film-coated drill bit of actual fabrication.
In the present embodiment; Through can illumination wavelength being that 262nm (four times of ripples of Nd:YLF laser (first-harmonic: wavelength is 1047nm)), repetition rate are 10kHz, on average export the above-mentioned laser processing device of the laser of 0.1W; (focal distance f=150mm) converges laser by f θ lens; And use galvanometer scanner with the sweep speed of 25mm/s according to identical track scanning four times, thereby the cutting edge 2a of the drill bit 1 that will be implemented as carbon film 3 by the synthetic formed diamond overlay film of gas phase is made its sharp processing.
In addition; As preparation; As shown in Figure 5; Synthesize on the tool base 2 of carbide alloy system through gas phase that to form average film thickness be the diamond film of 17 μ m, and last to form diamond film with the mode thicker than average film thickness be carbon film 3 in the crest line portion (carbon film point of a knife 3b) that cutting edge 2a promptly is made up of back knife face 4b and rake face 4a.In addition, the membranous mensuration of carbon film is used Raman spectroscopy.
In addition, as stated, the part of cutting edge 2a is because the film forming position is more than the plane, so film forming has the diamond film (carbon film 3) of thicker and circular change.
For example, as shown in Figure 1, at first will be from the matrix point of a knife 2b of tool base 2 along rake face 4a the average carbon film thickness in the zone on the rake face 4a more than the distance 100 μ m be defined as average film thickness ta.Then, will be from matrix point of a knife 2b along rake face 4a distance 50 μ m be defined as average film thickness te with the average carbon film thickness in the zone on the interior rake face.The thick te of this average carbon film comprises the part of the part of the above-mentioned thicker and circular change before the Laser Processing.
In the present embodiment, above-mentioned average film thickness ta is made as more than the 5 μ m.Further, with the mode film forming diamond film of the relation that becomes " te＞ta ".
Then, rake face 4a and back knife face 4b are tilted 10 ° with respect to the direction of illumination of laser beam L, and from the crest line of all directions and matrix point of a knife 2b scanning laser beam L abreast.In the case, laser beam L scans with the bearing of trend of the final carbon film point of a knife 3b that forms abreast.As shown in Figure 5, initial laser beam irradiation target location P1 is set in from the intersection point on carbon film 3 surfaces of the thicker and circular change of the extended line 4d of the average height (part that does not comprise the thicker and circular change of the part that is formed on cutting edge 2a) of rake face 4a and back knife face 4b, 4c and cutting edge 2a part to the squint position of 4 μ m, the outside of carbon film point of a knife 3b.
In the carbon film-coated drill bit 1 that so uses above-mentioned manufacturing approach to make, when the anterior angle of tool base 2 was 28 °, in the carbon film-coated drill bit 1 that forms in that carbon film 3 is carried out Laser Processing, anterior angle was 30 °, and anterior angle keeps bigger angle.
Carbon film-coated drill bit to the embodiment of the utility model carries out cutting test, and table 1 illustrates measures the boring result in processing life-span.In addition, as comparative example, in table 1, illustrate in the lump carry out the result of same mensuration without the drill bit in the past by carbon film (diamond film) coating of Laser Processing.In addition, the CFRP (carbon fibre reinforced plastic) that will have the laminated structure of carbon fiber and thermmohardening type epoxy resin quadrature uses as workpiece (being cut thing), and the processing conditions during boring is as shown in table 1.In addition, judging service life is to carry out according to the number of drills that burr or splitting take place.
[table 1]
Can know from this result; Burr or splitting take place in the carbon film-coated drill bit of comparative example when number of drills is 350 times; Therewith relatively; The carbon film-coated drill bit of present embodiment is that burr or splitting did not take place before 520 times in number of drills, thereby confirms to reduce cutting resistance and realize high lifeization through sharp cutting edge.
In addition, the technical scope of the utility model is not limited to above-mentioned embodiment, in the scope that does not break away from the utility model aim, can carry out various changes.
Because the carbon film-coated drill bit of utility model has sharp point of a knife shape, therefore reduced cutting resistance.The result prolongs the service life of this carbon film-coated drill bit.
Claims (4)
1. a carbon film-coated drill bit (1) is characterized in that having:
Tool base (2), have matrix point of a knife (2b) and clip matrix rake face (2c) that said matrix point of a knife (2b) adjoins each other and matrix after knife face (2d); And
Carbon film (3) is formed on behind said matrix point of a knife (2b), said matrix rake face (2c) and the said matrix on the knife face (2d),
On said carbon film (3), the zone on knife face (2d) behind zone on the said matrix rake face (2c) and the said matrix is formed with the concave surface (3a) to the concave surface (3a) of the rake face side of said tool base depression and back knife face side respectively,
The concave surface of concave surface of said rake face side (3a) and said back knife face side is gone up at said matrix point of a knife (2b) and is intersected, thereby goes up formation carbon film point of a knife (3b) at said carbon film (3),
The angle (θ 0) that the angle (θ 1) that the concave surface (3a) of the concave surface of said rake face side (3a) and said back knife face side intersects to form is constituted less than knife face (2d) behind said matrix rake face (2c) and the said matrix,
Said carbon film is a diamond film,
Concave surface (3a) and the said section of the concave surface of knife face side afterwards by with the formed said rake face side of the face of said cutting edge quadrature are circular shape,
The radius of curvature of the circular shape of the section of the concave surface of concave surface of said rake face side (3a) and said back knife face side is in the scope of 5 μ m to 3000 μ m.
2. carbon film-coated drill bit according to claim 1 (1); It is characterized in that, the concave surface of concave surface of said rake face side (3a) and said back knife face side with the point of a knife quadrature and along the width on the direction of separately face in the scope of 10 μ m to 2000 μ m.
3. carbon film-coated drill bit according to claim 1 (1) is characterized in that, the degree of depth of the concave surface (3a) of concave surface of said rake face side (3a) and said back knife face side is in the scope of 2 μ m to 15 μ m.
4. carbon film-coated drill bit according to claim 1 (1) is characterized in that, the concave surface of concave surface of said rake face side (3a) and said back knife face side with the direction of point of a knife quadrature on width in the scope of 10 μ m to 2000 μ m,
The degree of depth of the concave surface (3a) of concave surface of said rake face side (3a) and said back knife face side is in the scope of 2 μ m to 15 μ m.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010289039 | 2010-12-26 | ||
| JP2010-289039 | 2010-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202539640U true CN202539640U (en) | 2012-11-21 |
Family
ID=46401676
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110439676.7A Expired - Fee Related CN102554319B (en) | 2010-12-26 | 2011-12-23 | Carbon film cladding drill and manufacture method thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5899905B2 (en) |
| CN (2) | CN202539640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554319A (en) * | 2010-12-26 | 2012-07-11 | 三菱综合材料株式会社 | Carbon film cladding drill and manufacturing method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (15)
| 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 |
| US5716170A (en) * | 1996-05-15 | 1998-02-10 | Kennametal Inc. | Diamond coated cutting member and method of making the same |
| 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 |
| WO2007122859A1 (en) * | 2006-03-28 | 2007-11-01 | Kyocera Corporation | Cutting tool, method for producing same and cutting method |
| 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 |
| 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 |
-
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
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554319A (en) * | 2010-12-26 | 2012-07-11 | 三菱综合材料株式会社 | Carbon film cladding drill and manufacturing method thereof |
| CN102554319B (en) * | 2010-12-26 | 2016-01-20 | 三菱综合材料株式会社 | Carbon film cladding drill and manufacture method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5899905B2 (en) | 2016-04-06 |
| CN102554319B (en) | 2016-01-20 |
| CN102554319A (en) | 2012-07-11 |
| JP2012148399A (en) | 2012-08-09 |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20160120 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |