CN102294508A - End mill and producing method thereof - Google Patents
End mill and producing method thereof Download PDFInfo
- Publication number
- CN102294508A CN102294508A CN2011101568278A CN201110156827A CN102294508A CN 102294508 A CN102294508 A CN 102294508A CN 2011101568278 A CN2011101568278 A CN 2011101568278A CN 201110156827 A CN201110156827 A CN 201110156827A CN 102294508 A CN102294508 A CN 102294508A
- Authority
- CN
- China
- Prior art keywords
- blade
- shape
- slotting cutter
- leading section
- processing
- 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
Images
Abstract
The invention provides an end mill which has a steady cutting ability even with a small diameter of less than 2mm, and a producing method of the end mill. At least a pair of blades (13) are respectively disposed at two opposite sides at the front end portion (12) of a blade portion (11) rotating around an axis (O). The external diameter of the blade (13) is less than 2 mm, and the blade is machined into an integrated shape of the front end portion (12) through laser machining, and the blade is machined into the shape of a rear tool face (17) at the peripheral surface of the front end portion (12) through laser machining. The surface roughness Rz of the rear tool face (17) is less than 2 Mum, and the surface roughness Ra is less than 1 Mum.
Description
Technical field
The present invention relates to a kind of slotting cutter and the manufacture method thereof that can stably carry out Milling Process with the minor diameter below the diameter 2mm.
Background technology
In recent years, the instrument of the mould that uses in the basket of mobile phone etc. is made as processing provided the slotting cutter that uses carbide alloy or sintered diamond, cubic boron nitride (hereinafter referred to as cBN) sintered body.Especially, cBN has and is only second to adamantine hardness, and is low with the chemical reactivity of the metalloid of Fe, Co, Ni, therefore is best suited for the material of Mould Machining.In the slotting cutter that uses cBN, owing to can carry out long-life processing in short-life, the stone Cutting of Hardened Steels more than the 60HRC in the past, and pinpoint accuracy, long-life mould can be provided and receive publicity, especially in the slotting cutter of the minor diameter below diameter 2mm, along with the complicated and miniaturization of mold shape, the prospect of increase in demand will be arranged from now on.
In the past, in the manufacturing of slotting cutter, general by using the machining formation form (formation shape) of emery wheel.And in this slotting cutter, form the back knife face that the smear metal effect is discharged in performance by machining based on emery wheel at outer peripheral face.
And as the processing method of slotting cutter, except the machining based on emery wheel, also known have a Laser Processing.
For example record following slotting cutter in the patent documentation 1: it possesses diamond blade and the slotting cutter main body with blade part, and has used by shear the single-crystal diamond of rake face cut part based on the Laser Processing of ultraviolet laser.In addition, in this slotting cutter, also by form the part (comprising back knife face or rake face) that constitutes blade with emery wheel or free abrasive particle.
And propose to have following slotting cutter in the patent documentation 2: the blade that it possesses tool body and is made of single-crystal diamond imposes the rake face of Laser Processing formation by (111) crystal plane formation of single-crystal diamond to blade.This blade also forms the strip brazing filler metal on mount pad by single-crystal diamond, and forms the back knife face by Laser Processing.
Patent documentation 1: No. 4339573 communique of Japan Patent
Patent documentation 2: the open 2010-23192 communique of Japan Patent
Leave following problem in the above-mentioned technology in the past.
In the processing method of above-mentioned slotting cutter in the past, form the back knife face by machining or the attrition process of using emery wheel, but when the external diameter of making blade is the slotting cutter of the following minor diameter of diameter 2mm, if, then have the unfavorable condition that can't form back knife face and so on stable surperficial accuracy by emery wheel processing back knife face.That is, when minor diameter and thin slotting cutter are applied the mechanical property load that is produced by emery wheel, the shape of emery wheel self take place through the time change, the surface accuracy also produced deviation when surface roughness became big thus, was difficult to form stable back knife face.Particularly difficult when being the material that hardness is very high as the cBN sintered body.For example, as shown in figure 13, when making minor diameter ball end mill,, then arrange the revolution mark D of formation, thereby cause surface roughness to become big by a plurality of groove shapes of the rotation generation of emery wheel with certain orientation if form the back knife face by emery wheel.The surface roughness of back knife face becomes big if so, and then emitting of smear metal will variation, can't obtain stable cutting ability.Therefore, can't in the small diameter solid cutter below the diameter 2mm, form the high back knife face of surperficial accuracy in the past, be difficult to carry out stable machining.And, tabular cBN blade or diamond blade etc. are being assemblied in the gimmick of slotting cutter main body, be difficult to make the ball end mill of the following minor diameter of diameter 2mm.
Summary of the invention
The present invention finishes in view of above-mentioned problem, even its purpose is to provide a kind of slotting cutter and manufacture method thereof that also has stable cutting ability for the following minor diameter of diameter 2mm.
The present invention adopts following formation in order to solve above-mentioned problem.Promptly, slotting cutter of the present invention, at instrument leading section around the axis rotation, at least one pair of blade clips described axis at front end and is formed at opposition side mutually, it is characterized in that the external diameter of described blade is below the diameter 2mm, form the shape of described instrument leading section integral body by Laser Processing, and form the shape of back knife face by Laser Processing at the outer peripheral face of described instrument leading section, the surface roughness Rz of this back knife face below the 2 μ m and surface roughness Ra below 1 μ m.
In this slotting cutter, because the external diameter that is blade is the following small diameter solid cutter of diameter 2mm, form the shape of instrument leading section integral body by Laser Processing, and form the shape of back knife face at the outer peripheral face of instrument leading section by Laser Processing, this the back knife face surface roughness Rz below the 2 μ m and surface roughness Ra below 1 μ m, so by not applying the Laser Processing of mechanical property load, the back knife face of and high surperficial accuracy little in the integrally formed surface roughness of instrument leading section.Promptly, compare with the back knife face that produces the revolution mark of a plurality of groove shapes by processing in the past based on emery wheel, slotting cutter of the present invention has the back knife face of the little and high surperficial accuracy of surface roughness based on Laser Processing, so can access higher smear metal discharging performance in small diameter solid cutter.
And, since be not with the brazing filler metal of tabular blade in tool body, but form the shape of the instrument leading section integral body comprise blade with Laser Processing, thus can be easily and pinpoint accuracy ground make the instrument leading section of the minor diameter below the diameter 2mm.
And, slotting cutter of the present invention is characterised in that, knife face is formed with cancellous micro concavo-convex in described back, and a plurality of fine elongated slot that extends and a plurality of fine short groove that extends to the direction of this adjacency between the described fine elongated slot of adjacency constitute this cancellous micro concavo-convex by mutual almost parallel arrangement.
Promptly, in this slotting cutter, because knife face is formed with cancellous micro concavo-convex in the back, a plurality of fine elongated slot that extends and a plurality of fine short groove that extends to the direction of this adjacency between the fine elongated slot of adjacency constitute this cancellous micro concavo-convex by mutual almost parallel arrangement, so compare concavo-convex diminish and with many groove shape revolution marks of extending in the past by miniaturization to certain orientation, so surface roughness further diminishes, can access more stable smear metal discharging performance.
And, slotting cutter of the present invention is that a kind of to have with described axis as described blade be the ball end mill that the rotational trajectory at center is roughly hemispheric bulb blade, it is characterized in that, in the described instrument leading section described at least bulb blade by in cBN sintered body, sintered diamond, the carbide alloy any one or its be combined to form.
Promptly, in this slotting cutter, since in the instrument leading section at least the bulb blade by in cBN sintered body, sintered diamond, the carbide alloy any one or its be combined to form, so excellent in abrasion resistance and high life, as minor diameter ball end mill with excellent in machinability energy, be suitable in the fine finishining etc. of mould etc., especially the cBN sintered body is suitable in the fine finishining etc. of glass hard steel.
The manufacture method of slotting cutter of the present invention is a kind of method of making the slotting cutter of the invention described above, it is characterized in that having the three-dimensional laser manufacturing procedure, the light intensity distributions in described three-dimensional laser manufacturing procedure illumination beam cross section is the shape that the laser beam of Gaussian distribution forms described instrument leading section integral body, in this three-dimensional laser manufacturing procedure, at least when forming described back knife face, before processing after shape and the processing that designs aspect two of shape with the angle initialization of the relative machined surface of described laser beam for shining described laser beam less than 50 °.
In the manufacture method of this slotting cutter, because in the three-dimensional laser manufacturing procedure, at least after formation during knife face, after the processing before processing in shape and the design aspect the shape two with the angle initialization of the relative machined surface of laser beam for less than 50 ° of illuminating laser beams, so can form the back knife face with little surface roughness and high accuracy to size.That is, when carrying out Laser Processing, even the focal point that laser beam only arranged is consistent on the surface of machined object, the form after also processing according to the laser beam of irradiation and machined surface angulation changes, sometimes also variation of accuracy to size.The light intensity distributions of the beam cross section of laser beam has Gaussian distribution usually, as shown in figure 14, because the center intensity of laser beam L is high more, when so deep processing is got at the center of laser beam L, the shallow more processing of periphery, the side of the processing part 5a of the irradiating laser of processing object thing 5 produces certain inclination and causes machining shape out of shape.Therefore, by shape after the processing in shape before processing and the design two aspect the angle (the normal direction angulation of the direction of propagation of laser beam and the face of illuminating laser beam) of the relative machined surface of laser beam is set at the light intensity distributions of considering beam cross section angle promptly less than 50 ° angle, thereby can under machining shape prerequisite not out of shape, obtain the back knife face of high accuracy to size.
According to the present invention, can obtain following effect.
Promptly, according to slotting cutter involved in the present invention and manufacture method thereof, even in the external diameter of blade is small diameter solid cutter below the diameter 2mm, also form the shape of instrument leading section integral body by Laser Processing, and form the shape of back knife face at the outer peripheral face of instrument leading section by Laser Processing, this the back knife face surface roughness Rz below the 2 μ m and surface roughness Ra below 1 μ m, so have the back knife face of little surface roughness and high surperficial accuracy, and can obtain more stable cutting ability according to high smear metal discharge property.Thus, slotting cutter of the present invention is for example discharged the minor diameter ball end mill that property is excellent and have high cutting ability as smear metal, is suitable for the fine finishining of difficult-to-machine material etc.
Description of drawings
Fig. 1 is the side view and the vertical view of the instrument leading section of expression slotting cutter in an embodiment of slotting cutter involved in the present invention and manufacture method thereof.
Fig. 2 is the unitary side view of expression slotting cutter in an embodiment of slotting cutter involved in the present invention and manufacture method thereof.
Fig. 3 is the schematic diagram of the micro concavo-convex of expression back knife face in an embodiment of slotting cutter involved in the present invention and manufacture method thereof.
Fig. 4 is the concise and to the point whole pie graph that is illustrated in the laser processing device that uses in the manufacture method of the related slotting cutter of present embodiment.
Fig. 5 is the key diagram of the relation of the cross sectional shape of the expression scanning direction of laser beam and laser beam in the manufacture method of the related slotting cutter of present embodiment.
Fig. 6 is the key diagram of expression laser beam and the method (b) of processing previous methods (a) of relation of plane and present embodiment in the manufacture method of the related slotting cutter of present embodiment.
Fig. 7 is the key diagram that depart from the machined surface in the expression design and the inclination angle of the irradiating angle of the relative laser beam of actual machined surface in the manufacture method of the related slotting cutter of present embodiment.
Fig. 8 is the chart that the inclination angle of the irradiating angle of the relative laser beam of expression in the manufacture method of the related slotting cutter of present embodiment is offset.
Fig. 9 is the key diagram of the irradiating angle of the machined surface after the relative processing of processing in preceding machined surface and the design of expression laser beam in the manufacture method of the related slotting cutter of present embodiment.
Figure 10 is that expression is carried out four on circumferentially with machining area and cut apart and the key diagram of the operation of processing in the manufacture method of the related slotting cutter of present embodiment.
Figure 11 is the key diagram of the processing of each machined layer of expression in the manufacture method of the related slotting cutter of present embodiment.
Figure 12 is the enlarged image of expression back knife face in the embodiment of slotting cutter involved in the present invention and manufacture method thereof.
Figure 13 is the schematic diagram of the revolution mark of expression back knife face in the example in the past of slotting cutter involved in the present invention and manufacture method thereof.
Figure 14 is the schematic diagram of the cross sectional shape of expression illuminating laser beam and the part of processing.
Symbol description
1,10-slotting cutter, 11-blade portion, 12-instrument leading section, 13-blade, 13a-bulb blade, 13b-periphery blade, 16-rake face, knife face behind the 17-, 29,29a, 29b, 29c, 29d-machined surface, the L-laser beam, the axis of 0-blade portion, the fine elongated slot of M1-, the fine short groove of M2-.
The specific embodiment
Below, a slotting cutter referring to figs. 1 through Figure 11 during to use cBN sintered body involved in the present invention and an embodiment of manufacture method thereof describe.In addition, each accompanying drawing of Shi Yonging in the following description to have in order being made as and can to discern or discern the size of each parts easily and suitably change the part of engineer's scale as required.
As shown in Figures 1 and 2, the slotting cutter 10 of present embodiment is the ball end mill of following 2 swords: at the instrument leading section 12 that with axis 0 is the center rotation, a pair of blade 13 clips axis 0 at front end and is formed at opposition side mutually, and is roughly hemispheric a pair of bulb blade 13a as blade 13 rotational trajectory that to have with above-mentioned axis 0 be the center.This slotting cutter 10 is made of following: columned handle of a knife portion 14 is formed and is had in front the head 14a of minor diameter by hard materials such as carbide alloy; And roughly columned blade portion 11, be engaged in head 14a front end by diffusion bond.
Above-mentioned blade portion 11 is made of carbide alloy portion 15 that is engaged in head 14a and the instrument leading section 12 that is engaged in this carbide alloy portion 15 and becomes the blade of cBN sintered body.That is, the instrument leading section 12 of above-mentioned blade portion 11 is formed by the cBN sintered body.
And the external diameter of the blade 13 of this slotting cutter 10 is below the diameter 2mm, forms the shape of instrument leading section 12 integral body by Laser Processing, and forms chamfering 19 (dashed area of Fig. 1) in rake face 16 sides of blade 13 with band shape by Laser Processing.
Above-mentioned blade 13 has: a pair of bulb blade 13a is arranged at front and forms circular-arc; And a pair of periphery blade 13b, 13a extends to linearity along axis 0 continuously from the bulb blade.That is, instrument leading section 12 is for being formed with the fore-end of the blade 13 that is made of bulb blade 13a and periphery blade 13b.In addition, the external diameter of bulb blade 13a for example is set at R=0.5mm.
In above-mentioned instrument leading section 12, be formed with the plane rake face 16 that extends along axis 0 to base end side from front end at wall towards the slotting cutter direction of rotation.And, be formed with back knife face 17 at the outer peripheral face of instrument leading section 12.That is, be formed with bulb blade 13a and periphery blade 13b with the back crest line place that intersects of knife face 17 at the rake face 16 that forms shape by Laser Processing.
The surface roughness Rz (maximum surface roughness) of above-mentioned back knife face 17 below the 2 μ m and surface roughness Ra (arithmetic average roughness) below 1 μ m.
As shown in Figure 3, be formed with cancellous micro concavo-convex at this back knife face 17, a plurality of fine elongated slot M1 that extends and a plurality of fine short groove M2 that extends to the direction of this adjacency between the fine elongated slot M1 of adjacency constitute this cancellous micro concavo-convex by mutual almost parallel arrangement.That is, the texture of back knife face 17 becomes the micro concavo-convex based on a plurality of fine elongated slot M1 and a plurality of fine short groove M2, therefore is achieved the following and surface roughness Ra of surface roughness Rz:2 μ m: below the 1 μ m.In addition, the pitch of fine elongated slot M1 is 0.7～15 μ m, and the pitch of fine short groove M2 is 0.5～10 μ m.
Above-mentioned chamfering 19 extends to periphery blade 13b from bulb blade 13a and forms with certain width.For example, the width of chamfering is set at constant in the scope of 30～40 μ m.And the surface roughness of chamfering 19 is at least below the Rz:2 μ m, below the Ra:1 μ m.
Then, with reference to Fig. 4 to Figure 11 the manufacture method of the slotting cutter 10 of present embodiment is described.
As shown in Figure 4, the laser processing device 21 that is used for the manufacture method of present embodiment is the devices that carry out three-dimensional processing to instrument leading section 12 illuminating laser beams (laser) L of processing object thing, it possesses has: laser radiation mechanism 22, its impulse oscillation laser beam L shines and scanning with certain toggle frequency to instrument leading section 12; Rotating mechanisms such as motor 23 can keep engaging the handle of a knife portion 14 of blade portion 11 and are rotated; Travel mechanism 24 is provided with this rotating mechanism 23 and removable; And the control part 25 of these mechanisms of control.
Above-mentioned travel mechanism 24 is made of following: the X-axis objective table 24x of portion, can move to the directions X parallel with horizontal plane; The Y-axis objective table 24y of portion is arranged on this X-axis objective table 24x of portion, can move to and with horizontal plane parallel Y direction vertical with respect to directions X; And the Z axle objective table 24z of portion, be arranged on this Y-axis objective table 24y of portion, when can keep handle of a knife portion 14, move to respect to the horizontal plane vertical direction by fixing rotating mechanism 23.
Above-mentioned laser radiation mechanism 22 possesses and has: LASER Light Source 26 when vibration becomes the laser of laser beam L according to the triggering signal of Q-switch, has the optical system that optically focused becomes point-like; Electromagnetic scanning instrument 27, the laser beam L that scanning is shone; And ccd video camera 28, for the Working position of confirming maintained blade portion 11 is taken.
By this laser radiation mechanism 22 emitting laser bundle L is that the light intensity distributions of single mode and beam cross section becomes Gaussian distribution, and as shown in Figure 5, the light intensity distributions oval in shape of beam cross section on focal point.
And laser radiation mechanism 22 makes the scanning direction of laser beam L consistent with the long axis direction or the short-axis direction of the above-mentioned light intensity distributions of elliptical shape.This be because, if the long axis direction of the scanning direction of laser beam L and above-mentioned light intensity distributions or short-axis direction are inconsistent, and be the direction that tilts with respect to major axis or minor axis, then can cause the machining shape of end of scan part to tilt and generation is offset.In addition, in the present embodiment, make the scanning direction of laser beam L consistent with the short-axis direction of above-mentioned light intensity distributions.
Above-mentioned LASER Light Source 26 can use the light source of the laser that can shine any wavelength among 190～550nm, for example uses laser that can oscillation wavelength 355nm in the present embodiment and the light source that carries out outgoing.
Above-mentioned electromagnetic scanning instrument 27 be disposed at travel mechanism 24 directly over.And above-mentioned ccd video camera 28 is in abutting connection with being arranged at electromagnetic scanning instrument 27.
When using this laser processing device 21 to make slotting cutter 10, illuminating laser beam L and form the shape (three-dimensional laser manufacturing procedure) of instrument leading section 12 integral body.At this moment, as Fig. 6 to shown in Figure 10, before processing after shape and the processing that designs aspect the shape two with the angle initialization of the relative machined surface of laser beam L for less than 50 ° of illuminating laser beam L.Especially after formation during knife face 17, be less than 50 ° with the angle initialization of laser beam L.
That is, shown in Fig. 6 (a), instrument leading section 12 is carried out two cut apart and when carrying out Laser Processing, cause the angle θ of the relative machined surface 29 of laser beam L in the circumferential end to become more than 50 ° on circumferentially.At this moment, because the light intensity distributions of the beam cross section of laser beam L has Gaussian distribution, so as shown in figure 14, the center intensity of laser beam L is high more, when deep processing is got at the center of laser beam L, the shallow more processing of periphery produces certain inclination and causes machining shape out of shape in the side of the processing part 5 of irradiating laser.
That is, as shown in Figure 7, with regard to desire form shape machined surface 29a tilt angle theta 2 and in fact form for the tilt angle theta 3 of machined surface 29b of shape with laser beam L processing, as if illuminating laser beam L more obliquely, then can on the angle of inclination, be offset.As can be known, be more than 50 ° if the relative desire of laser beam L forms the irradiating angle of the machined surface 29a of shape from chart shown in Figure 8, then can obviously produce this phenomenon, the angle of inclination is offset significantly.
Therefore, as shown in Figure 9, in the present embodiment, with laser beam L relatively before the processing after the machined surface 29c of shape and the processing in the design machined surface 29d both sides' of shape angle θ 4 and angle θ 5 be set at illuminating laser beam L less than 50 °.And, because angle θ 4 and the angle θ 5 of laser beam L is set at less than 50 °, (is divided into regional A～D) and carries out Laser Processing so, instrument leading section 12 is carried out on circumferential four cutting apart as Fig. 6 (b) and shown in Figure 10.
That is, by only instrument leading section 12 being carried out four one of them sector scanning laser beam L of cutting apart on circumferentially, at this machining area inner laser bundle L to the angle θ of any machined surface less than 50 °.Thus, as shown in figure 10, utilizing rotating mechanism 23 to make instrument leading section 12 is that the center is cut apart four rotations and processed for per 90 ° with axis 0, so that the direction of illumination of laser beam L and irradiated machined surface angulation are all the time in suitable angular range (θ＜50 °).In addition, in the present embodiment, along the axis 0 scanning direction laser beam L of blade portion 11.
And, in the present embodiment, when carrying out the scanning of laser beam L, as shown in figure 11, set a plurality of machined layer 30 by accumulation on the scanning imaging system basis, relative each machined layer 30 vertical irradiation laser beam L, each machined layer 30 is all removed predetermined portions and is formed the machined surface 29 (back knife face 17 or chamfering 19 etc.) of 3D shape.That is, in the scan control of laser beam L, at first the blade portion 11 of processing object thing is divided into a plurality of machined layer 30 stacked on the direction of illumination of laser beam L and sets.
And, by setting the part that processing is removed the shape after the processing on the shape and design from processing before in each machined layer 30, and each machined layer 30 scanning laser beam L is removed predetermined portions, thus the predetermined machined surface 29 of knife face 17 grades after forming.In the method, weigh surperficial accuracy (Rz or Ra etc.) after the processing by the smoothness of the resolution ratio (thickness) of machined layer 30 and machined layer 30 self etc.In addition, in the present embodiment, with surface roughness at least in Rz (maximum surface roughness): below the 2 μ m, Ra (arithmetic average roughness): the mode below the 1 μ m is set the resolution ratio of machined layer 30.
As shown in Figure 3, the face that carries out Laser Processing according to this manufacture method becomes and is formed with cancellous micro concavo-convex and surface roughness is little, the machined surface of high surperficial accuracy, and described cancellous micro concavo-convex is arranged by mutual almost parallel and a plurality of fine elongated slot M1 that extends and a plurality of fine short groove M2 that extends to the direction of this adjacency between the fine elongated slot M1 of adjacency constitute.
So, the slotting cutter 10 of present embodiment is that a kind of external diameter of blade 13 is the following small diameter solid cutter of diameter 2mm, owing to form the shape of instrument leading section 12 integral body by Laser Processing, and form the shape of back knife face 17 at the outer peripheral face of instrument leading section 12 by Laser Processing, this the back knife face 17 surface roughness Rz below the 2 μ m and surface roughness Ra below 1 μ m, therefore according to the Laser Processing that does not apply the mechanical property load, the back knife face 17 of and high surperficial accuracy little in instrument leading section 12 integrally formed surface roughnesses.
Promptly, compare with the back knife face that produces a plurality of groove shape revolution marks by processing in the past based on emery wheel, the slotting cutter 10 of present embodiment is owing to have the back knife face 17 of the little and high surperficial accuracy of surface roughness based on Laser Processing, so in the slotting cutter of minor diameter, can access higher smear metal discharging performance.
And, be not with the brazing filler metal of tabular blade in tool body, but form the shape of instrument leading section 12 integral body comprise blade 13 by Laser Processing, thus can be easily and pinpoint accuracy make small diameter tools leading section 12 below the diameter 2mm.
And, because knife face 17 is formed with cancellous micro concavo-convex in the back, a plurality of fine elongated slot M1 that extends and a plurality of fine short groove M2 that extends to the direction of this adjacency between the fine elongated slot M1 of adjacency constitute described mesh-shape micro concavo-convex by mutual almost parallel arrangement, so compare concavo-convex diminish and with many groove shape revolution marks of extending in the past by miniaturization to certain orientation, therefore surface roughness further diminishes, and can access more stable smear metal discharging performance.
In addition, owing to have the bulb blade 13a that is formed by the cBN sintered body at least in instrument leading section 12, so excellent in abrasion resistance and high life, the minor diameter ball end mill as having the excellent in machinability energy is suitable for the fine finishining of glass hard steel etc.
In the manufacture method of the slotting cutter of present embodiment, in the three-dimensional laser manufacturing procedure, at least after formation during knife face 17, after the processing before processing in shape and the design aspect two of shape with the angle initialization of the relative machined surface 29 of laser beam L for less than 50 ° of illuminating laser beam L, so can form back knife face 17 with little surface roughness and high accuracy to size.
Thus, in the manufacture method of present embodiment, can with the back knife face 17 accuracy to size be made as ± 2 μ m in, with surface roughness be made as below the Rz:2 μ m, below the Ra:1 μ m.
[embodiment]
Then, the embodiment of the slotting cutter of the manufacture method actual fabrication of relevant slotting cutter according to above-mentioned present embodiment is shown in Figure 12 with the photograph image (350 times enlarged images) that amplifies the back knife face.
From this image as can be known, the back knife face of the slotting cutter of present embodiment is formed with cancellous micro concavo-convex, described cancellous micro concavo-convex is arranged by mutual almost parallel and a plurality of fine elongated slot that extends and a plurality of fine short groove that extends to the direction of this adjacency between the fine elongated slot of adjacency constitute, and surface roughness Rz below the 2 μ m, Ra is below 1 μ m.
In addition, technical scope of the present invention is not limited to above-mentioned embodiment, can add various changes in the scope that does not break away from aim of the present invention.
For example, in the above-described embodiment, the present invention is applicable in the ball end mill, but also applicable to other slotting cutters such as radius end mills.
And, form bulb blade and the formed instrument leading section of periphery blade integral body by the cBN sintered body, and form bulb blade and periphery blade both sides by the cBN sintered body, but also can be set as the combination as cBN sintered body, sintered diamond, carbide alloy, promptly be set as on axis direction by the cBN sintered body and form the part of cardinal extremity and form instrument leading section from the cardinal extremity of bulb blade to the part of periphery blade cardinal extremity etc. by carbide alloy from front end to the bulb blade.And, also can form instrument leading section integral body by sintered diamond or carbide alloy.
Claims (4)
1. a slotting cutter is centering on the instrument leading section that axis rotates, and at least one pair of blade clips described axis at front end and is formed at opposition side mutually, it is characterized in that,
The external diameter of described blade is below the diameter 2mm,
Form the shape of described instrument leading section integral body by Laser Processing, and form the shape of back knife face at the outer peripheral face of described instrument leading section by Laser Processing, the surface roughness Rz of this back knife face below the 2 μ m and surface roughness Ra below 1 μ m.
2. slotting cutter as claimed in claim 1 is characterized in that,
Knife face is formed with cancellous micro concavo-convex in described back, and a plurality of fine elongated slot that extends and a plurality of fine short groove that extends to the direction of this adjacency between the described fine elongated slot of adjacency constitute described cancellous micro concavo-convex by mutual almost parallel arrangement.
3. slotting cutter as claimed in claim 1 or 2 is characterized in that,
Be a kind of ball end mill, having with described axis is that the rotational trajectory at center is roughly hemispheric bulb blade as described blade,
In the described instrument leading section described at least bulb blade by in cBN sintered body, sintered diamond, the carbide alloy any one or its be combined to form.
4. the manufacture method of a slotting cutter, this method is used for making each described slotting cutter of claim 1 to 3, it is characterized in that,
Have the three-dimensional laser manufacturing procedure, the light intensity distributions in described three-dimensional laser manufacturing procedure illumination beam cross section is the shape that the laser beam of Gaussian distribution forms described instrument leading section integral body,
In this three-dimensional laser manufacturing procedure, at least when forming described back knife face, before processing after shape and the processing that designs aspect the shape two, with the angle initialization of the relative machined surface of described laser beam for shining described laser beam less than 50 °.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010146990A JP2012006135A (en) | 2010-06-28 | 2010-06-28 | End mill and manufacturing method therefor |
| JP2010-146990 | 2010-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102294508A true CN102294508A (en) | 2011-12-28 |
Family
ID=45355317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101568278A Pending CN102294508A (en) | 2010-06-28 | 2011-06-03 | End mill and producing method thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012006135A (en) |
| CN (1) | CN102294508A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962871A (en) * | 2012-11-28 | 2013-03-13 | 东阳市速博数控刀具有限公司 | Micro-diameter both-edge tapered ball cutter |
| CN103785885A (en) * | 2012-10-31 | 2014-05-14 | 三菱综合材料株式会社 | End mill and method of manufacturing the same |
| CN105880733A (en) * | 2016-05-11 | 2016-08-24 | 蔡锦霞 | Cutting structure of sawing cutter and laser etching process thereof |
| CN106844988A (en) * | 2017-02-06 | 2017-06-13 | 成都天佑创软科技有限公司 | The method of slotting cutter bottom tooth plane edge curve of the generation with tooth partial center amount |
| CN108580999A (en) * | 2018-05-14 | 2018-09-28 | 哈尔滨理工大学 | A kind of special rose cutter of Milling of Titanium Alloy thin-walled parts |
| CN111971145A (en) * | 2018-11-27 | 2020-11-20 | 21世纪株式会社 | Ultra-precision blade machining method using femtosecond laser |
| US11358241B2 (en) | 2015-04-23 | 2022-06-14 | Kennametal Inc. | Cutting tools having microstructured and nanostructured refractory surfaces |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5892008B2 (en) * | 2012-09-03 | 2016-03-23 | 三菱マテリアル株式会社 | Ball end mill and manufacturing method thereof |
| JP5983364B2 (en) * | 2012-12-04 | 2016-08-31 | 三菱マテリアル株式会社 | End mill |
| JP6354451B2 (en) * | 2014-08-22 | 2018-07-11 | 三菱マテリアル株式会社 | Ball end mill and manufacturing method thereof |
| CN104289886A (en) * | 2014-09-17 | 2015-01-21 | 哈尔滨汽轮机厂有限责任公司 | Machining method for small-diameter formed cutter |
| US9643282B2 (en) | 2014-10-17 | 2017-05-09 | Kennametal Inc. | Micro end mill and method of manufacturing same |
| JP6627618B2 (en) * | 2016-04-01 | 2020-01-08 | 三菱マテリアル株式会社 | Ball end mill |
| CN110315216B (en) * | 2018-03-29 | 2021-07-30 | 上海名古屋精密工具股份有限公司 | Method for laser machining a workpiece and use thereof for producing a tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546272A (en) * | 2003-12-18 | 2004-11-17 | 北京工业大学 | Laser cladding method for stick milling cutter |
| JP2007075944A (en) * | 2005-09-14 | 2007-03-29 | Tungaloy Corp | Ball end mill |
| JP2007216327A (en) * | 2006-02-15 | 2007-08-30 | Aisin Seiki Co Ltd | Forming method of chip breaker |
| JP2008229838A (en) * | 2007-02-21 | 2008-10-02 | Cyber Laser Kk | Diamond cutting tool using laser and its manufacturing method |
| CN201446281U (en) * | 2009-06-29 | 2010-05-05 | 常州创伟工具制造有限公司 | Ball head vertical milling cutter for manufacturing high hardness steel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008110437A (en) * | 2006-10-31 | 2008-05-15 | Hitachi Tool Engineering Ltd | Ball end mill made from cubic boron nitride |
-
2010
- 2010-06-28 JP JP2010146990A patent/JP2012006135A/en active Pending
-
2011
- 2011-06-03 CN CN2011101568278A patent/CN102294508A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546272A (en) * | 2003-12-18 | 2004-11-17 | 北京工业大学 | Laser cladding method for stick milling cutter |
| JP2007075944A (en) * | 2005-09-14 | 2007-03-29 | Tungaloy Corp | Ball end mill |
| JP2007216327A (en) * | 2006-02-15 | 2007-08-30 | Aisin Seiki Co Ltd | Forming method of chip breaker |
| JP2008229838A (en) * | 2007-02-21 | 2008-10-02 | Cyber Laser Kk | Diamond cutting tool using laser and its manufacturing method |
| CN201446281U (en) * | 2009-06-29 | 2010-05-05 | 常州创伟工具制造有限公司 | Ball head vertical milling cutter for manufacturing high hardness steel |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785885A (en) * | 2012-10-31 | 2014-05-14 | 三菱综合材料株式会社 | End mill and method of manufacturing the same |
| CN102962871A (en) * | 2012-11-28 | 2013-03-13 | 东阳市速博数控刀具有限公司 | Micro-diameter both-edge tapered ball cutter |
| US11358241B2 (en) | 2015-04-23 | 2022-06-14 | Kennametal Inc. | Cutting tools having microstructured and nanostructured refractory surfaces |
| CN105880733A (en) * | 2016-05-11 | 2016-08-24 | 蔡锦霞 | Cutting structure of sawing cutter and laser etching process thereof |
| CN105880733B (en) * | 2016-05-11 | 2018-04-13 | 蔡锦霞 | A kind of saw blade cuts the laser etch process of structure |
| CN106844988A (en) * | 2017-02-06 | 2017-06-13 | 成都天佑创软科技有限公司 | The method of slotting cutter bottom tooth plane edge curve of the generation with tooth partial center amount |
| CN106844988B (en) * | 2017-02-06 | 2020-03-10 | 成都天佑创软科技有限公司 | Method for generating end mill bottom tooth plane edge curve with tooth eccentricity center |
| CN108580999A (en) * | 2018-05-14 | 2018-09-28 | 哈尔滨理工大学 | A kind of special rose cutter of Milling of Titanium Alloy thin-walled parts |
| CN111971145A (en) * | 2018-11-27 | 2020-11-20 | 21世纪株式会社 | Ultra-precision blade machining method using femtosecond laser |
| CN111971145B (en) * | 2018-11-27 | 2022-04-12 | 21世纪株式会社 | Ultra-precision blade machining method using femtosecond laser |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012006135A (en) | 2012-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102294508A (en) | End mill and producing method thereof | |
| CN102294507B (en) | End mill and manufacturing method of same | |
| US9415466B2 (en) | Cutting tool and method and apparatus for manufacturing the same | |
| CN102310266A (en) | Laser processing device and laser processing | |
| US20120207869A1 (en) | Cutting Tool, Method for Manufacturing Molding Die, and Molding Die for Array Lens | |
| JP6089596B2 (en) | End mill and manufacturing method thereof | |
| CN109333385B (en) | Diamond grinding wheel with microstructure and preparation method thereof | |
| JP2009006436A (en) | Manufacturing method of working tool and working tool | |
| CN102451920B (en) | Carbon film coated cutting tool and manufacture method thereof | |
| CN102528142B (en) | Carbon film coated end mill and manufacture method thereof | |
| JP2006198743A (en) | Small-diameter rotary tool, and method of cutting workpiece formed of high-hardness material | |
| JP2007030095A (en) | Method for manufacturing diamond tool | |
| JP2003025118A (en) | Diamond tool for cutting | |
| TW201416196A (en) | Flycutting groove machining method and flycutting mirror finishing method on film-like workpiece | |
| JP5892008B2 (en) | Ball end mill and manufacturing method thereof | |
| JP5983364B2 (en) | End mill | |
| WO2013039150A1 (en) | Laser machining method | |
| CN102554319B (en) | Carbon film cladding drill and manufacture method thereof | |
| JP5183256B2 (en) | Cutting tool and cutting method using the same | |
| JP2004216483A (en) | Ultraprecision machining tool | |
| JP4746339B2 (en) | Cutting tool manufacturing method | |
| JP5892007B2 (en) | Square end mill and manufacturing method thereof | |
| JP2004148454A (en) | Method and device for grinding forming die of micro lens array | |
| JP5939091B2 (en) | Radius end mill and manufacturing method thereof | |
| JP2012135828A (en) | Carbon film-coated insert tip, and method of manufacturing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111228 |