CN102378661A - Cutting tool material, composite material, cutting tool and method for producing a cutting tool material - Google Patents

Cutting tool material, composite material, cutting tool and method for producing a cutting tool material Download PDF

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Publication number
CN102378661A
CN102378661A CN2010800153350A CN201080015335A CN102378661A CN 102378661 A CN102378661 A CN 102378661A CN 2010800153350 A CN2010800153350 A CN 2010800153350A CN 201080015335 A CN201080015335 A CN 201080015335A CN 102378661 A CN102378661 A CN 102378661A
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China
Prior art keywords
base material
cutting element
mentioned
shank
hole portion
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Granted
Application number
CN2010800153350A
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Chinese (zh)
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CN102378661B (en
Inventor
藤井康喜
加藤宗则
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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Publication of CN102378661A publication Critical patent/CN102378661A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/12—Making tools or tool parts, e.g. pliers other cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills

Abstract

Provided is a cutting tool material (10) which is formed into a shaft-shape, and has one end inserted into a hole in a shank part so that the cutting tool material (10) is supported by the shank part. Rotation regulating parts (12) which have a non-circular cross section orthogonal to the axial direction are formed at the end of the cutting tool material (10) which is inserted into the hole in the shank part.

Description

Cutting element is with base material, combination base material, cutting element and the cutting element manufacturing approach with the base material
The application is willing to advocate priority 2009-094083 number based on the spy who filed an application in Japan on April 8th, 2009, quotes its content here.
Technical field
The present invention relates to combination base material, the cutting element that on this combination base material, has formed cutting edge and cutting element that cutting element constitutes with base material and shank with the base material, by this cutting element manufacturing approach with the base material.
Background technology
In the past, known for example have a such combination base material that in cutting elements such as drill bit, uses of record in patent documentation 1,2.
Generally, such combination base material possesses cutting element with base material and shank.Cutting element has the shape of a shape with the base material, is formed by hard materials such as carbide alloy.Shank has the shape of a shape, and diameter is bigger with the base material than cutting element, is formed by cheap material relatively such as steel, SUS.
By attrition process accurately, external diameter forms greatlyyer slightly than the internal diameter that is formed on the hole portion on the shank cutting element, is pressed in the hole portion of shank with the base end part outer peripheral face of base material.Through like this cutting element being pressed into the base material in the hole portion of shank, the restriction cutting element is with the relative rotation around axle of base material and shank.
In addition, form cutting edge with on the base material and the leading section base end part opposition side, make cutting elements such as drill bit at cutting element that such combination base material possesses.
Patent documentation 1: the spy opens flat 10-217017 communique
Patent documentation 2: the spy opens the 2002-18623 communique.
Summary of the invention
But, the above-mentioned cutting element that in combination base material, uses with the base material in, have following problem.That is, in the hole portion that cutting element is pressed into shank with the base end part of base material before, cross sectional shape attrition process that need being orthogonal to of base end part is axial is high-precision positive circle.Through cutting element is formed positive circle well with the cross sectional shape precision of base material, when in the hole portion that cutting element is pressed into shank with the base end part of base material, the stress that between base end part and hole portion, brings each other upwards becomes even in week.Thus, prevented the relative rotation of cutting element with base material and shank.But in order to carry out so high-precision attrition process, it is complicated that manufacturing process becomes, and cutting element is surging with the manufacturing cost of base material.
In addition, as the method beyond in the hole portion that cutting element is pressed into shank with the base end part of base material, for example form the internal diameter of hole portion with the external diameter of base material greatly than cutting element.And after base end part being inserted in the portion of hole, ca(u)lk processing such as the pressure processing of use punching machine etc. or pull and stretch etc. are chimeric with base end part and hole portion.At length say, carry out plastic deformation (below the slightly situation of " distortion " of province is arranged) so that the internal diameter of the hole portion of shank dwindles through pressure processing or ca(u)lk processing etc., base end part and hole portion is chimeric each other.But, through this method, can not obtain closely chimeric state reliably, be difficult to limit reliably the relative rotation around axle of cutting element with base material and shank.
So, the purpose of this invention is to provide a kind of certain following at least a kind of possible cutting element with base material, combination base material, cutting element and cutting element manufacturing approach with the base material.That is, can prevent reliably cutting element with the relative rotation around axle of base material and shank, can easily make, can cut down manufacturing cost, can precision stably carry out cut well and can prolong life tools.
In order to achieve the above object; Cutting element of the present invention is used the base material; Be to be a shape, the one of which end to be inserted in the hole portion of shank and to be used the base material, on an above-mentioned end, be formed with and be orthogonal to axial cross section and be non-orbicular rotation restrictions by the cutting element of above-mentioned shank supporting.
Promptly; Cutting element of the present invention is with the base material that an end of the main body that possesses a shape, aforementioned body is inserted in the hole portion of shank and the cutting element that is supported is used the base material; On an end of aforementioned body, be provided with the rotation restrictions; Above-mentioned rotation restrictions is set to, make different with the appearance and size of appearance and size and the 2nd direction of the 1st direction in the cross section of the orthogonality of center shaft of aforementioned body, above-mentioned hole portion is out of shape corresponding to profile.
Relevant cutting element of the present invention is with the rotation restrictions that is formed with above-mentioned that kind on the one of which end (base end part) of base material in being inserted in the hole portion of shank.Therefore, cutting element no longer is circular (positive circular) with the cross sectional shape of the base end part of base material.
For example, the base end part of this cutting element with the base material is pressed in the hole portion of shank.Perhaps, the base end part of cutting element with the base material is inserted in the hole portion of shank, shank is implemented pressure processing or ca(u)lk processing etc., cutting element is chimeric with base material and shank.Thus, form combination base material.At this moment, with the cross section of cutting element with central shaft (axially) quadrature of base material in, the shape of the hole portion of shank corresponding to the shape deformation of rotation restrictions for not being the shape of circular (positive circular).That is, the plastic deformation in the cross section of the central shaft that uses the tool blank material perpendicular to cutting of the hole portion of shank is the internal diameter shape different with the internal diameter of the 2nd direction of the 1st direction.Thus, the cross sectional shape of the hole portion of shank is under the situation of circle before cutting is with the insertion of tool blank material, and after the insertion of cutting with the tool blank material, the cross sectional shape of the hole portion of shank also no longer is circular.And the inner peripheral surface of the hole portion of shank is close on the outer peripheral face of cutting element with the base end part of base material, bigger face pressure effect.Thus, prevent reliably cutting element with base material and shank around axle relative to move.
The cutting element that constitutes combination base material with the leading section of base material on formation cutting edge and make cutting elements such as slotting cutter or drill bit.And, this cutting element is being used under the situation in the cut, the cutting load of cutting element effect around axle.Under these circumstances, also use the base material according to above-mentioned cutting element, the rotation restrictions limits the relative rotation around axle of cutting element with base material and shank reliably.Thereby, can precision stably carry out cut well, can prolong life tools.
In addition, in the past in order to limit the relative rotation of shank and cutting element, with the outer peripheral face of the base end part of base material in advance accurately after the attrition process, the base end part of cutting element with the base material is pressed in the hole portion of shank with cutting element with the base material.Compare with the base material with such cutting element in the past, it is easy that manufacturing process becomes, and manufacturing cost is cut down significantly.
In addition, relevant cutting element of the present invention with the base material in, also can be that above-mentioned rotation restrictions comprises the protuberance outstanding and that extend vertically from outer peripheral face.
In addition, cutting element of the present invention has the operation of configuration mother metal between the pair of metal mould of arranged opposite with the manufacturing approach of base material; Make these metal patterns approaching each other, above-mentioned mother metal pressure processing is shaped to the operation of cutting element with the shape of base material.In the operation of this pressure processing, the rotation restrictions is shaped to comprises from cutting element with the outer peripheral face of base material shape towards the protuberance of giving prominence to the direction of above-mentioned metal pattern direction quadrature opposite each other.In addition, raised part forms, and makes it along cutting element extending axially with the base material.
Relevant cutting element of the present invention with the base material in, the rotation restrictions comprise from cutting element with the outer peripheral face of base material the outstanding and protuberance of extension vertically.Therefore, in the hole portion that this cutting element is pressed into shank with the base end part of base material or with base end part, be inserted in the portion of hole and implement pressure processing or ca(u)lk processing etc. and when chimeric, the inner peripheral surface of hole portion caves in corresponding to the shape plastic deformation of protuberance.And the inner peripheral surface of hole portion is close to and is fastened on the protuberance of cutting element with the base material, and cutting is closely chimeric with the hole portion of the base end part of tool blank material and shank.The protuberance of engaging and the inner peripheral surface of hole portion are in contact with one another like this, become the resistance for rotation.Thus, limit the relative rotation of cutting element reliably with base material and shank.
Here, cutting element can form the intensity that can make the distortion of hole portion with the rotation restrictions that comprises protuberance of the base material intensity according to the hole portion of shank.Particularly, also can make the material, shape, size etc. of the rotation restrictions of shank distortion according to decisions such as the material of shank, shape, sizes.
In addition, comprise under the situation of protuberance of above-mentioned that kind, cutting element during with pressure processing or the extrusion process formation of base material through punching machine etc., can easily formed protuberance in the rotation restrictions.
In addition, when the mother metal pressure processing being shaped to cutting element with the shape of base material, restrictions is rotated in formation to relevant cutting element of the present invention as above-mentioned with the manufacturing approach of base material.Therefore, can easily form the rotation restrictions through the pressure processing of existing punching machine etc.
That is,, when pressure processing, in this recess, fill mother metal through under the mutual immediate state of pair of metal mould, the recess corresponding to the shape of protuberance being set each other at these metal patterns.Thus, protuberance is formed easily.Thereby the cutting element that possesses the rotation restrictions can easily carry out with the manufacturing of base material, and manufacturing cost is significantly cut down.
In addition, relevant cutting element of the present invention also can be that raised part is formed with a plurality of, and is spaced from each other arranged spaced around axle with the base material.
Relevant cutting element of the present invention is formed with a plurality of protuberances with the base material on outer peripheral face, and these protuberances are spaced from each other arranged spaced around axle each other.Therefore, these protuberances engage respectively with the inner peripheral surface of the hole portion of shank, can fully guarantee above-mentioned resistance.Thereby, limit the relative rotation of cutting element more reliably with base material and shank.
In addition; Relevant cutting element of the present invention with the base material in; Also can be, raised part has the 1st projection, be configured in the 1st projection axially on one distolateral and from high the 2nd projection of outstanding aspect ratio the 1st projection of above-mentioned outer peripheral face be formed on the stage portion between above-mentioned the 1st, the 2nd projection.
That is, protuberance also can have from cutting element with outstanding different the 1st projection and the 2nd projections of height of the outer peripheral face of the base end part of base material.In addition, also can between the 1st projection and the 2nd projection, form jump.
About cutting element of the present invention has from different each other the 1st, the 2nd projection of the outstanding height of outer peripheral face with the protuberance of base material and is formed on the stage portion between the 1st, the 2nd projection.Therefore, when chimeric, the inner peripheral surface of hole portion caves in corresponding to the shape plastic deformation of protuberance in the hole portion that this cutting element is inserted into shank with the base end part of base material, through pressure processing or ca(u)lk processing etc.In addition, the inner peripheral surface of hole portion is close to and is fastened on the protuberance of cutting element with the base material, and cutting is closely chimeric with the hole portion of the base end part of tool blank material and shank.At length say, the inner peripheral surface of hole portion corresponding to the shape of the 1st, the 2nd projection of protuberance and stage portion with multistage shape depression.
Protuberance and the inner peripheral surface of hole portion of engaging are in contact with one another like this, become to they relative to the resistance that moves.Therefore, cutting element is limited with the relative rotation around axle of base material and shank reliably.And then, in protuberance, the 2nd projection be configured in the 1st projection axially on an end (cardinal extremity) side, so stage portion is towards the axial other end (front end) side.And, the contact of the inner peripheral surface of hole portion on this stage portion and become resistance, cutting element with on base material and shank axial relative to move and be limited.Particularly, prevent that reliably cutting element from extracting such situation from the hole portion of shank to the front axially with the base material.
In addition, relevant cutting element of the present invention with the base material in, also can be that raised part forms along with the taper from narrowing down gradually along the width of the Zhou Fangxiang of above-mentioned outer peripheral face towards the other end (front end) side along an axial end (cardinal extremity) side.
In addition, relevant cutting element of the present invention with the base material in, also can be, raised part form along with from along an above-mentioned axial end (cardinal extremity) side towards the other end (front end) side from the outstanding height of the above-mentioned outer peripheral face taper of step-down gradually.
Relevant cutting element of the present invention also can form taper with the protuberance of base material as above-mentioned.In the case, when chimeric, the inner peripheral surface of hole portion caves in corresponding to the shape plastic deformation of protuberance in the hole portion that this cutting element is inserted into shank with the base end part of base material, through pressure processing or ca(u)lk processing etc.Thus, the inner peripheral surface of hole portion is close to and is fastened on the protuberance of cutting element with the base material, and cutting element is closely chimeric with the hole portion of the base end part of base material and shank.That is, the inner peripheral surface of hole portion caves in taper corresponding to the cone-shaped of protuberance.Protuberance and the inner peripheral surface of hole portion of engaging are in contact with one another like this, become for they relative to the resistance that moves.Therefore, cutting element is limited with the relative rotation around axle of base material and shank reliably.Here, protuberance also can be, along with from axial one distolateral distolateral towards another, narrows down gradually along the circumferential width of above-mentioned outer peripheral face.Perhaps, protuberance also can form along with on axially one distolateral distolateral towards another, from the outstanding height of the above-mentioned outer peripheral face taper of step-down gradually.Thus, prevent reliably cutting element with the base material from the hole portion of shank another distolateral extracting on axially.
In addition, relevant cutting element of the present invention with the base material in, the axial cross section that is orthogonal to of above-mentioned rotation restrictions also can be an elliptical shape.
Cutting element is pressed into the rotation restrictions of base material in the hole portion of shank, or the state in being inserted in hole portion down by enforcement pressure processing or ca(u)lk processing etc., and be fitted in the hole portion of shank.At this moment, plastic deformation is elliptical shape corresponding to the cross sectional shape of rotation restrictions to use the shape of the hole portion on the axial cross section of base material perpendicular to cutting element.In addition, the inner peripheral surface of hole portion is close to and is engaged on the rotation restrictions, and cutting element is closely chimeric with the hole portion of the base end part of base material and shank.The inner peripheral surface of the rotation restrictions of engaging and hole portion is in contact with one another and becomes resistance like this, so cutting element is with the above-mentioned relative rotation quilt restriction reliably of base material and shank.
In addition, relevant combination base material of the present invention is stated under the state in cutting element is inserted into this cutting element above-mentioned shank with the above-mentioned base end part of base material with the base material the above-mentioned hole portion in the use, and above-mentioned base end part and above-mentioned hole portion are closely chimeric each other.
Promptly; About combination base material of the present invention possesses above-mentioned cutting element with the base material with have the shank of hole portion; Through above-mentioned rotation restrictions be inserted in the portion of above-mentioned hole, above-mentioned hole portion is out of shape corresponding to the shape of above-mentioned rotation restrictions, above-mentioned cutting element is not chimeric revolvably each other with base material and above-mentioned shank.
Relevant combination base material of the present invention is formed with the rotation restrictions on the base end part of cutting element with the base material.For example, this cutting element is pressed into the base end part of base material in the hole portion of shank, or is inserted in the hole portion of shank and implements pressure processing or ca(u)lk processing etc.Thus, cutting element is closely chimeric each other with the hole portion of the base end part of base material and shank.Thereby above-mentioned cutting element is limited with the relative rotation of base material and shank reliably.In addition, using under the situation of this combination base material as cutting elements such as slotting cutter or drill bits, can stably guarantee the precision of cut and prolong life tools.
In addition, relevant cutting element of the present invention uses combinations thereof base material, goes up formation cutting edge with the base material with the other end (leading section) above-mentioned end (rotation restrictions) opposition side at the above-mentioned cutting element of this combination base material.
According to relevant cutting element of the present invention, the cutting element that is formed on combination base material with the cutting edge on the base material with processed material precision cut and boosting productivity stably well.
With base material, combination base material, and cutting element, can prevent the relative rotation around axle of cutting element according to relevant cutting element of the present invention reliably, can precision stably carry out cut well, can prolong life tools with base material and shank.
In addition, according to the manufacturing approach of relevant cutting element of the present invention, can easily carry out manufacturing and the reduction manufacturing cost of above-mentioned cutting element with the base material with the base material.
Description of drawings
Fig. 1 is the stereogram of the cutting element of relevant the 1st embodiment of the present invention of expression with the base material.
Fig. 2 is front view and the side view of the cutting element of relevant the 1st embodiment of the present invention of expression with the base material.
Fig. 3 is that the figure of the cutting element of relevant embodiment of the present invention with the metal pattern part of the press of base material made in expression.
Fig. 4 is that the figure of the cutting element of relevant embodiment of the present invention with the order of base material made in explanation.
Fig. 5 is side view and the front view of expression about the shank of the combination base material of embodiment of the present invention.
Fig. 6 is the figure of explanation manufacturing about the order of the combination base material of the 1st embodiment of the present invention.
Fig. 7 is the cutting edge side view partly of the cutting element of the relevant embodiment of the present invention of expression.
Fig. 8 is the stereogram of the cutting element of relevant the 2nd embodiment of the present invention of expression with the base material.
Fig. 9 is the stereogram of the cutting element of relevant the 3rd embodiment of the present invention of expression with the base material.
Figure 10 is the figure of explanation manufacturing about the order of the combination base material of the 4th embodiment of the present invention.
Figure 11 is the figure of explanation manufacturing about the order of the combination base material of the 5th embodiment of the present invention.
The specific embodiment
The cutting element of relevant embodiment of the present invention with the base material as after state, constitute combination base material with shank.In addition, through on this combination base material, forming cutting edge, make cutting elements such as slotting cutter.
Cutting element is for example formed by hard materials such as carbide alloy or cermets with the base material.Shank is for example by metal material such as low and comparatively cheap SUS, steel, aluminium alloy forms with base material hardness than this cutting element.
At first, the 1st embodiment of the present invention is described.
Like Fig. 1, shown in Figure 2, cutting element forms the axle shape with protuberance 11 with base material 10.Cutting element except protuberance 11 forms circle (positive circular) with the shape in the cross section that is orthogonal to central shaft (axially) of the main part of base material 10.Protuberance 11 forms, and makes it from cutting element outstanding and extension vertically with the outer peripheral face of the main part of base material 10.Protuberance 11 spreads all over the axial total length L1 formation of cutting element with base material 10.Cutting element is plane 11A with the surface towards with central shaft opposition side (outside radially) of base material 10.
In addition, these protuberances 11 are spaced from each other arranged spaced around cutting element with the axle of base material 10.In this embodiment, protuberance 11 upwards separates in the week of outer peripheral face and uniformly-spaced is formed with two.The plane 11A of these protuberances 11 clips the central axes ground configuration of cutting element with base material 10 each other.In addition, the cutting element that is formed with these protuberances 11 is rotation restrictions 12 with an end (base end part) of base material 10.Rotation restrictions 12 comprises protuberance 11, is orthogonal to just circle of axial cross sectional shape right and wrong.That is, rotation restrictions 12 is through having from the outstanding protuberance 11 of the outer peripheral face of orbicular main part roughly, and cross sectional shape becomes and is not positive circle.
In addition, in Fig. 2, for example cutting element with base material 10 axially on total length L1 be in the scope of 20mm～120mm.In addition, cutting element with the axial cross section of being orthogonal to of base material 10 in, diameter (outside dimension of the 1st direction) d of the outer peripheral face of circular main part is in the scope of 1mm～13mm.In addition, in this cross section, comprising that appearance and size (outside dimension of the 2nd direction) D1 of protuberance 11 is identical with above-mentioned diameter d or the big slightly size of diameter group d, is in the scope of 1mm～14mm.In addition, in the 11A of the plane of protuberance 11, size (width) W that is orthogonal to axial short side direction is in the scope of 0.9mm～2.1mm.Plane 11A from cutting element use base material 10 to analyse and observe as the outstanding size T of the outer peripheral face of circle be in the scope of 0.07mm～0.1mm.In addition, preferably, the ratio (W/d) with respect to diameter d of size W is in 15%～30% the scope.
In addition, be under the situation more than the 2mm for example in diameter d, size W preferably use value that 1+ (d-2.5) * 0.1 calculates ± 0.1mm in.In the case, size T is T ≈ 0.1.In addition, in this embodiment, above-mentioned total length L1 is about 24mm, and diameter d and appearance and size D1 are about 3.6mm, and size W is about 1.05mm, and size T is about 0.1mm.
In addition, in this embodiment, above-mentioned cutting element is formed with base material 10 working pressures machinery 100.
As shown in Figure 3, press 100 has the pair of metal mould 101,102 of arranged opposite on vertical direction.Metal pattern 101,102 has rectangular-shaped shape, is spaced from each other arranged spaced.In addition, opposed machined surface 101A, the 102A of metal pattern 101,102 form the circular groove shape respectively.Say that at length the cross section of the vertical direction of machined surface 101A, 102A forms the semicircle arcuation, so that it is spaced from each other spaced and parallel and extends in horizontal direction respectively from the outer peripheral face depression of metal pattern 101,102.
In addition, in Fig. 3, in the two end portions of the width of machined surface 101A, 102A, promptly be orthogonal on both two end portions of direction of machined surface 101A, direction that 102A extends and vertical direction, be formed with stage portion 101B, 102B respectively.Stage portion 101B, 102B are spaced from each other on vertical direction at interval, and the direction that is parallel to machined surface 101A, 102A extension is extended, and forms band shape respectively.
In addition, on the outer peripheral face of metal pattern 101,102,, be respectively equipped with and be close to these walls 101C, the last guidance part 103 of 102C last towards wall 101C, the 102C of the foreign side of the width of machined surface 101A, 102A.Guidance part 103 can slide and is provided with along the face direction with respect to wall 101C, 102C.
In addition, the major part of the press 100 in the A-A cross section of Fig. 4 presentation graphs 3.Shown in Fig. 4 (b), metal pattern 101,102 has wall 101D, the 102D in the outside of the direction of extending towards machined surface 101A, 102A on outer peripheral face.Last at these walls 101D, 102D, be respectively equipped with and be close to these walls 101D, the last guidance part 104 of 102D.Guidance part 104 can slide and is provided with along the face direction with respect to wall 101D, 102D.
In addition, metal pattern 101,102 can be approaching along vertical direction each other under not shown drive division effect, leave.And, under the state that metal pattern 101,102 leaves each other, can fill the mother metal M of cutting element at metal pattern 101, between 102 with base material 10.
Fig. 3 representes metal pattern 101,102 mutual immediate states.Under such metal pattern 101,102 mutual immediate states, the space that machined surface 101A, 102A, stage portion 101B, 102B, guidance part 103,104 surround is corresponding to the shape of cutting element with the profile of base material 10.
Then, to using above-mentioned press 100 manufacturing cutting elements to describe with the order of base material 10.
At first, under the state that metal pattern 101,102 is left each other, metal pattern 101, between 102 the configuration for example with the metal material of powdery and the mother metal M of bond mixing.That is, shown in Fig. 4 (a), make metal pattern 101 with respect to metal pattern 102 to above under the state that leaves, in the space that surrounds by metal pattern 102, guidance part 103 and guidance part 104, fill mother metal M.
Then, shown in Fig. 4 (b), make metal pattern 101 approaching to metal pattern 102.And, with machined surface 101A, 102A, stage portion 101B, 102B, guidance part 103,104 mother metal M is surrounded, mother metal M is compressed.
And then, shown in Fig. 4 (c), make metal pattern 101,102 approaching up to the immediate each other position of machined surface 101A, 102A.Thus, M further compresses with mother metal, and mother metal M is shaped to the shape of cutting element with base material 10.
That is, make metal pattern 101,102 approaching each other, mother metal M pressure processing is shaped to the shape of cutting element with base material 10.At this moment, mother metal M is formed as corresponding to the shape of machined surface 101A, 102A, stage portion 101B, 102B, guidance part 103,104 encirclements and has the cylindric of protuberance.Protuberance 11 be formed as corresponding to the position of the two end portions of the width of machined surface 101A, 102A from cutting element with the outer peripheral face of base material 10 outstanding and shape that extend vertically.Thus, moulding comprises the rotation restrictions 12 of protuberance 11.
That is, mother metal M is when being compressed as above-mentioned, and is as shown in Figure 3, also is filled into cross section by stage portion 101B, 102B, guidance part 103,104 encirclements and is in the recess 105 of groove shape of rectangle.Thus, on the outer peripheral face of cutting element, by the protuberance 11 of moulding corresponding to the shape of recess 105 with base material 10.
Then, shown in Fig. 4 (d), do not change metal pattern 101,102 interval each other, metal pattern 101,102 and guidance part 103,104 are relatively moved on vertical direction.And, the mother metal M that is configured between machined surface 101A, the 102A is positioned at than the upper part of guidance part 103,104 leans on the top.
Then, metal pattern 101 is left from metal pattern 102 to the top, make to be formed as cutting element and to expose, after from device, taking out, carry out sintering and make cutting element with base material 10 with the mother metal M of the shape of base material 10.
Then, to using this cutting element to describe with the combination base material 80 (with reference to Fig. 6 (b)) of base material 10.
Cutting element is inserted in the hole portion 51 of shank shown in Figure 5 50 with base material 10 its axial base end parts, receives shank 50 supportings.Combination base material 80 possesses cutting element with base material 10 and shank 50.
As shown in Figure 5, shank 50 forms a shape or cylindric.On an axial end of shank 50, be formed with in the end face upper shed and the columned hole portion 51 of extending towards the end of opposition side in the axial direction.In addition, the deep of portion 51 is formed with cone shape space 51A in the hole.In addition, the inside diameter D 2 of hole portion 51 is slightly littler with the diameter d of base material 10 than cutting element.
In addition, in this embodiment, with shank 50 axially on total length L2 set greatlyyer with the total length L1 on base material 10 axial than cutting element.
Then, the order that uses above-mentioned cutting element to make combination base material 80 with base material 10 and shank 50 is described.
At first, with cutting element shown in Figure 1 with base material 10 axially on base end part be pressed in the hole portion 51 of shank shown in Figure 5 50, closely chimeric as Fig. 6 (a).
At length say, with cutting element use base material 10 base end part pushing and pressing so that its with respect to hole portion 51 of shank 50 for coaxial, with stronger try hard to recommend into.So, the inner peripheral surface of hole portion 51 cutting element with the effect of the base end part of base material 10 under plastic deformation pushed away expansion slightly so that it spreads all over complete cycle at every turn.Thus, the base end part of cutting element with base material 10 is pushed in the hole portion 51.And shown in Fig. 6 (a), cutting element is pushed into the deep of hole portion 51 with the base end part of base material 10, and cutting element is with the completion that is pressed into to shank 50 of base material 10.Thus, cutting element closely is entrenched in base material 10 its base end parts in the hole portion 51 of shank 50 and is supported.In addition, when this was pressed into, the cutting swarf that with the base end part of base material 10 the inner peripheral surface cutting of hole portion 51 is produced through cutting element was pushed into and receives and keeps in the space 51A in the deep of hole portion 51.
Then, shown in Fig. 6 (b), on the outer peripheral face of shank 50, axial cutting element is being pressed into base material 10 on the end (leading section) of side, is forming the conical surface 54 that enlarges gradually towards inboard (from front end towards cardinal extremity) diameter along with from the axial outside.In embodiment illustrated, the external diameter and the cutting element of the end (base end side) of the axial inboard of the conical surface 54 are roughly the same with the external diameter of base material 10, are connected in smoothly on the outer peripheral face of cutting element with base material 10.In addition, the conical surface 54 axially on length L 4 be shank 50 hole portion 51 axially on length L below 3.That is, in embodiment illustrated, the length that is inserted in the part in the hole portion 51 at cutting element in base material 10 is L3.Length L 3 is bigger than the length L 4 of the conical surface 54.
Like this, make the combination base material 80 that constitutes with base material 10 and shank 50 by cutting element.In addition, in embodiment illustrated, with cutting element with base material 10 axially on total length L1 over half be inserted in the hole portion 51 of shank 50.
Then, the order that uses combination base material 80 to make cutting element 95 is described.
As shown in Figure 7, the cutting element of combination base material 80 with the outer peripheral face of base material 10 on the spiral helicine cutting edge 96 of formation.Say that at length on the outer peripheral face that expose of cutting element with base material 10, leading section at least in the axial direction (with the end of base end part opposition side) is gone up and formed cutting edge 96.
In embodiment illustrated,, make the cutting element 95 that possesses slotting cutter through forming cutting edge 96 on base material 10 at cutting element.
That kind as described above, the cutting element of relevant this embodiment is orthogonal to the orbicular rotation restrictions 12 of axial cross section right and wrong with being formed with on the base end part of base material 10 in being inserted in the hole portion 51 of shank 50.Therefore, in the hole portion 51 that this cutting element is pressed into shank 50 with the base end part of base material 10 and make that they are chimeric, when forming combination base material 80, the inner peripheral surface of hole portion 51 is out of shape corresponding to the shape of rotation restrictions 12.At this moment, the distortion of the inner peripheral surface of hole portion 51 becomes non-positive circle so that be orthogonal to axial cross section.That is, in orbicular hole portion 51 roughly, insert and have the rotation restrictions 12 of the cutting element of protuberance 11 with base material 10, hole portion 51 is out of shape and no longer is positive circle.Thus, the inner peripheral surface of hole portion 51 is close on the outer peripheral face of cutting element with the base end part of base material, prevents that reliably cutting element from relatively moving around axle with base material 10 and shank 50.
Form cutting edge 96 and manufacturing cutting element 95 at the cutting element of combination base material 80 on base material 10, this cutting element 95 is being used under the situation in the cut, act on the cutting element 95 around the cutting load of axle.At this moment, rotation restrictions 12 limits cutting element reliably with the relative rotation around axle of base material 10 with shank 50.Thereby, can precision stably carry out cut well.In addition, life tools can be prolonged.
In the past, in order to limit the relative rotation around axle of cutting element, cutting element, was pressed into base end part in the hole portion 51 of shank 50 in advance accurately after the attrition process with the outer peripheral face of the base end part of base material 10 with base material 10 and shank 50.According to this embodiment, do not need such in the past attrition process, became easy with compare manufacturing process in the past, manufacturing cost is significantly cut down.
Say that at length rotation restrictions 12 comprises from cutting element with the outer peripheral face of base material 10 protuberance 11 outstanding and that extend vertically.Therefore, when being pressed in the hole portion 51 that be fitted to shank 50 with the base end part of base material 10 this cutting element, the inner peripheral surface of hole portion 51 caves in corresponding to the shape plastic deformation of protuberance 11.In addition, the inner peripheral surface of hole portion 51 is close to and is fastened on the protuberance 11, and cutting element is closely chimeric with the hole portion 51 of the base end part of base material 10 and shank 50.At this moment, the bigger face of effect is pressed between the inner peripheral surface of hole portion 51 and cutting element are with the outer peripheral face of the base end part of base material 10.The protuberance 11 of engaging is in contact with one another with the inner peripheral surface of hole portion 51 like this, become for relative to the resistance that moves.Thus, limit cutting element reliably with the relative rotation of base material 10 with shank 50.
In addition, because rotation restrictions 12 comprises such protuberance 11, so when mother metal M was shaped to cutting element with the shape of base material 10 through press 100, easily the moulding protuberance 11.
In addition, form a plurality of protuberances 11 at cutting element on the outer peripheral face of base material 10, protuberance 11 is spaced from each other arranged spaced around axle each other.Therefore, protuberance 11 engages with the inner peripheral surface of the hole portion 51 of shank 50 respectively, can fully guarantee above-mentioned resistance.Thereby, limit cutting element more reliably with the relative rotation of base material 10 with shank 50.
In addition, the cutting element of relevant this embodiment rotates restrictions 12 with the moulding when mother metal M pressure processing being shaped to cutting element with the shape of base material 10 of the manufacturing approach of base material 10.This rotation restrictions 12 has raised part 11 on the position of cutting element with the two end portions of the width of the machined surface 101A corresponding to metal pattern 101,102 on the outer peripheral face of base material 10,102A.Thereby, through using the pressure processing of existing press 100, can easily form rotation restrictions 12.
That is, under pair of metal mould 101,102 mutual immediate states, form the recess 105 that the cross section that is surrounded by stage portion 101B, 102B, guidance part 103,104 is a rectangle each other as the space of groove shape at metal pattern 101,102.Therefore, when pressure processing, in this recess 105, fill mother metal M, form protuberance 11 easily corresponding to the shape of this recess 105.Thereby, can easily possess of the manufacturing of the cutting element of rotation restrictions 12 with base material 10, manufacturing cost is significantly cut down.
In addition, because the combination base material 80 that will form like this uses as the cutting element that possesses slotting cutter 95,, prolonged life tools so can stably guarantee the precision of cut.
In addition, cutting element that can be through being formed on combination base material 80, can be boosted productivity processed material precision cut well and stably with the cutting edge on the base material 10 96.
Then, the 2nd embodiment of the present invention is described.
In addition, give identical Reference numeral, omit its explanation for the parts identical with above-mentioned embodiment.
As shown in Figure 8, the cutting element of relevant the 2nd embodiment forms a shape with base material 20, and the axial cross section that is orthogonal to of the main part except protuberance 21 forms circular.Protuberance 21 forms, and gives prominence to and extending axially along main part with the outer peripheral face of the main part of base material 20 from cutting element.Protuberance 21 spread all over cutting element with base material 20 axially on total length form.
In addition, protuberance 21 has the 1st projection 22 and the 2nd projection 23.The 2nd projection 23 in the axial direction with the 1st projection 22 disposed adjacent.In addition, the 2nd projection 23 from cutting element with outstanding aspect ratio the 1st projection 22 height of the outer peripheral face of the main part of base material 20.Between the 1st projection the 22, the 2nd projection 23, be formed with stage portion 24.
That is, the 2nd projection 23 and stage portion 24 be formed on cutting element with base material 20 axially on base end part on.The 1st projection 22 be formed on cutting element with the main part of base material 20 axially on the outer peripheral face of leading section and central portion on.In addition, the 1st projection 22 towards with cutting element are plane 22A with the surface of the central shaft opposition side (radial outside of main part) of base material 20, the 2nd projection 23 towards with cutting element are plane 23A with the surface of the central shaft opposition side of base material 20.
In addition, protuberance 21 is spaced from each other arranged spaced around axle.In this embodiment, protuberance 21 upwards separates in the week of outer peripheral face and uniformly-spaced is formed with two.In addition, the plane 22A of protuberance 21,22A reach plane 23A, 23A each other and clip the central shaft respectively abreast configuration of cutting element with base material 20 each other.In addition, through forming protuberance 21, the axial cross section that is orthogonal to of the rotation restrictions 12 of the base end part of cutting element use base material 20 is non-positive circle.
Then, describe with the order of base material 20 making this cutting element.
Cutting element is made with the same working pressure machinery 100 of base material 20 and above-mentioned embodiment.
Press 100 makes under metal pattern 101, the 102 mutual immediate states and will be redefined for the shape corresponding to protuberance 21 by the recess 105 that stage portion 101B, 102B, guidance part 103,104 surround.
Use this press 100, dispose mother metal M at the metal pattern that leaves each other 101, between 102.Then, make metal pattern 101 approach metal pattern 102, surround mother metal M, mother metal M is compressed with machined surface 101A, 102A, stage portion 101B, 102B, guidance part 103,104.
And then, make metal pattern 101,102 approaching up to the immediate each other position of machined surface 101A, 102A.And M further compresses with mother metal, and mother metal M is shaped to the shape of cutting element with base material 20.
At length say, make metal pattern 101,102 approaching each other,, be shaped to the shape of cutting element with base material 20 with mother metal M pressure processing.At this moment, main part is formed as cylindric mother metal M corresponding to the shape of machined surface 101A, 102A, stage portion 101B, 102B, guidance part 103,104 encirclements.And, on the position on the outer peripheral face of main part, mold the shape of protuberance 21 corresponding to the two end portions of the width of machined surface 101A, 102A.Thus, mold and possess, and the rotation restrictions 12 of the protuberance 21 that vertically extend outstanding with the outer peripheral face of the main part of base material 20 from cutting element.
In addition, the inside diameter D 2 of the hole portion 51 of shank 50 forms than cutting element with the big slightly size of the appearance and size D1 of base material 20.At length say, in shank 50, form the inside diameter D 2 of hole portion 51 bigger slightly with the pair of planar 23A distance each other on the 2nd projection 23 of base material 20 than cutting element.
And, with cutting element with base material 20 axially on base end part be inserted in the hole portion 51 of shank 50.And then, the base end part that inserts is bumped against on the deep of hole portion 51.Under this state, ca(u)lk processing such as the pressure processing through punching machine etc. or pull and stretch etc. is dwindled the inside diameter D 2 of the hole portion 51 of shank 50.Thus, make the inner peripheral surface plastic deformation of hole portion 51,, make cutting element chimeric each other with the base end part and the hole portion 51 of base material 20 so that it is close on the outer peripheral face of cutting element with base material 20.
Make combination base material 80 like this.
In addition, through the cutting element of this combination base material 80 with base material 20 on formation cutting edge 96 make cutting element 95.
That kind as described above is about the cutting element of this embodiment has from different each other the 1st projection the 22, the 2nd projection 23 of the outstanding height of the outer peripheral face of main part with the protuberance 21 of base material 20 and is formed on the stage portion 24 between the 1st projection the 22, the 2nd projection 23.Therefore, when chimeric, the inner peripheral surface of hole portion 51 caves in corresponding to the shape plastic deformation of protuberance 21 in the hole portion 51 that this cutting element is inserted into shank 50 with the base end part of base material 20 and through pressure processing or ca(u)lk processing etc.Thus, the inner peripheral surface of hole portion 51 is close to and is fastened on the protuberance 21, and cutting element is closely chimeric with the base end part and the hole portion 51 of base material 20.At length say, the inner peripheral surface of hole portion 51 corresponding to the shape of the 1st projection the 22, the 2nd projection 23 of protuberance 21 and stage portion 24 with multistage shape depression.
The protuberance 21 of engaging is in contact with one another with the inner peripheral surface of hole portion 51 like this, take place for relative to the resistance that moves.Therefore, cutting element is limited with the relative rotation around axle of base material 20 and shank 50 reliably.And then, in protuberance 21, the 2nd projection 23 be configured in the 1st projection 22 axially on base end side.Therefore, stage portion 24 is towards axial front, and the inner peripheral surface of hole portion 51 contacts on stage portion 24.This stage portion 24 becomes resistance with the contacting of inner peripheral surface of hole portion 51, cutting element with base material 20 and shank 50 axially on relative to move and be limited.Particularly, prevent that reliably cutting element from extracting such situation from the hole portion 51 of shank 50 to the front axially with base material 20.
In addition, because rotation restrictions 12 has such protuberance 21, so when mother metal M is shaped to cutting element with the shape of base material 20 through press 100, the shape of moulding protuberance 21 easily.
Then, the 3rd embodiment of the present invention is described.
In addition, give identical Reference numeral, omit its explanation for the parts identical with above-mentioned embodiment.
As shown in Figure 9, the cutting element of relevant the 3rd embodiment has the shape of a shape, the main part that is shaped as circle in cross section perpendicular to axial direction with base material 30.On main part, be formed with from outer peripheral face protuberance 31 outstanding and that extend vertically.Protuberance 31 spreads all over cutting element and forms with the axial total length of base material 30.Protuberance 31 towards with cutting element are plane 31A with the surface of the central shaft opposition side (radial outside of main part) of base material 30.
In addition, protuberance 31 is spaced from each other arranged spaced around axle.In this embodiment, protuberance 31 upwards separates in the week of the outer peripheral face of main part and uniformly-spaced is formed with two.In addition, the plane 31A of protuberance 31 clips the central axes ground configuration of cutting element with base material 30 each other.
In addition, protuberance 31 forms the taper that narrows down gradually with the circumferential width of the outer peripheral face of base material 30 towards front, along cutting element with the base end side of base material 30 along with from cutting element.Say that at length the plane 31A of protuberance 31 forms trapezoidal shape, so that along with reducing gradually from size (width) W of base end side towards front, short side direction.
In addition, cutting element is set in respect to the size W of front end with the size W of the cardinal extremity of base material 30 and surpasses in 1 times, scope below 1.2 times.In this embodiment, the size W of cardinal extremity is set in respect to the size W of front end and surpasses in 1 times, scope below 1.1 times.
In addition, cutting element passes through to form protuberance 31 with the rotation restrictions 12 of base material 30, and being orthogonal to axial cross section becomes non-positive circle.
In addition, in embodiment illustrated, cutting element forms with the main part of base material 30, makes its diameter d in the axial direction along with reducing gradually towards front from base end side.Say that at length cutting element is set in respect to the diameter d (diameter d 2) of front end with the diameter d (diameter d 1) of the cardinal extremity of base material 30 in 1.1 times～1.3 times the scope.In this embodiment, the diameter d 1 of cardinal extremity is set at about 1.2 times with respect to the diameter d 2 of front end.
In addition, protuberance 31 also can form taper.For example, protuberance 31 also can form along with from along axial base end side towards front, from cutting element with outstanding size (highly) T of the outer peripheral face of base material 30 taper of step-down gradually.In the case, cutting element is set at respect to the size T of the protuberance on the front end 31 with the size T of the protuberance on the cardinal extremity of base material 30 31 surpasses in 1 times, scope below 1.2 times.More preferably, the size T of the protuberance on the cardinal extremity 31 is set in respect to the size T of the protuberance on the front end 31 surpasses in 1 times, scope below 1.1 times.
The cutting element of this embodiment is same with base material 30 and above-mentioned embodiment, and working pressure machinery 100 is made.
Press 100 makes under metal pattern 101, the 102 mutual immediate states, will be pre-formed by the recess 105 that stage portion 101B, 102B, guidance part 103,104 surround to be the shape corresponding to protuberance 31.
At the metal pattern 101 of the state that leaves each other of this press 100, configuration mother metal M between 102.Then, make metal pattern 101 approach metal pattern 102.And, with machined surface 101A, 102A, stage portion 101B, 102B, guidance part 103,104 mother metal M is surrounded, mother metal M is compressed.
And then, make metal pattern 101,102 approaching up to the immediate each other position of machined surface 101A, 102A.And M further compresses with mother metal, and mother metal M is shaped to the shape of cutting element with base material 30, takes out from device.Then, with being shaped to the mother metal M sintering of cutting element, make cutting element with base material 30 with the shape of base material 30.
In addition, the inside diameter D 2 of the hole portion 51 of shank 50 forms greatlyyer slightly with the appearance and size D1 of base material 30 than cutting element.At length say, in shank 50, form the inside diameter D 2 of hole portion 51 bigger slightly with the distance each other of the pair of planar 31A on the cardinal extremity of base material 30 than cutting element.
And, with cutting element with base material 30 axially on base end part be inserted in the hole portion 51 of shank 50.And then, the cutting element that inserts is bumped against on the deep of hole portion 51 with the base end part of base material 30.Under this state, the inside diameter D 2 of the hole portion 51 of shank 50 is dwindled through pressure processing or ca(u)lk processing etc.Thus, make the inner peripheral surface plastic deformation of this hole portion 51, so that it is it is close on the outer peripheral face of cutting element with base material 30, that cutting element is chimeric each other with the end and the hole portion 51 of base material 30.
Like this, produce combination base material 80.
In addition, through forming cutting edge 96, manufacturing cutting element 95 on base material 30 at the cutting element of this combination base material 80.
That kind as described above, the cutting element of relevant this embodiment forms taper with the protuberance 31 of base material 30 as above-mentioned.Therefore, when chimeric, the inner peripheral surface of hole portion 51 caves in corresponding to the shape plastic deformation of protuberance 31 in the hole portion 51 that this cutting element is inserted into shank 50 with the base end part of base material 30 and through pressure processing or ca(u)lk processing etc.In addition, the inner peripheral surface of hole portion 51 is close to and is fastened on the protuberance 31, and cutting element is closely chimeric with the base end part and the hole portion 51 of base material 30.That is, the inner peripheral surface of hole portion 51 caves in taper corresponding to the cone-shaped of protuberance 31.The inner peripheral surface of the protuberance 31 of engaging and hole portion 51 is in contact with one another and becomes resistance like this.Thus, cutting element is limited with the relative rotation around axle of base material 30 with shank 50 reliably.Here, protuberance 31 forms the taper that narrows down gradually with the size W that makes progress in week of the outer peripheral face of the main part of base material 30 towards front, cutting element along with the base end side on axially.Here, so-called cutting element is cutting element width with the tangential direction of the outer rim of the main part on the cross section perpendicular to axial direction of base material 30 with the circumferential size W of the outer peripheral face of the main part of base material 30.
In addition, protuberance 31 forms the size T that gives prominence to the outer peripheral face of the main part of base material 30 towards front, from cutting element along with the base end side on the axially taper of step-down gradually.Therefore, prevent that reliably cutting element from extracting to the front axially from the hole portion 51 of shank 50 with base material 30.
In addition, cutting element forms with base material 30, makes its diameter d in the axial direction along with reducing gradually towards front from base end side.Therefore, prevent that more reliably cutting element from extracting from the hole portion 51 of shank 50 with base material 30.
Then, the 4th embodiment of the present invention is described.
In addition, give identical Reference numeral, omit its explanation for the parts identical with above-mentioned embodiment.
Shown in figure 10, the combination base material 85 of relevant the 4th embodiment possesses above-mentioned cutting element with base material 10 (20,30) and shank 60.
Shank 60 forms cylindric, is formed with the hole portion (hole) 61 that connects shank 60 vertically.In addition, the inside diameter D 2 of hole portion 61 is than the diameter d slightly little size of cutting element with the main part of base material 10 (20,30).In addition, in this embodiment, shank 60 axially on total length L2 littler than cutting element with the total length L1 on base material 10 (20,30) axial.
Then, the order that uses cutting element to make combination base material 85 with base material 10 (20,30) and shank 60 is described.
At first, with cutting element with base material 10 (20,30) axially on base end part be pressed in the hole portion 61 of shank 60, closely chimeric as Figure 10 (a).
At length say, the base end part of cutting element with base material 10 (20,30) pushed against from front so that its hole portion 61 with respect to shank 60 is coaxial, with stronger try hard to recommend into.So, the inner peripheral surface of hole portion 61 cutting element with the base end part effect of base material 10 (20,30) under plastic deformation pushed away expansion slightly so that it spreads all over complete cycle at every turn.Thus, the base end part of cutting element with base material 10 (20,30) is pressed in the hole portion 61.Then, Yi Bian make the inner peripheral surface plastic deformation of hole portion 61, Yi Bian further this cutting element is pressed in the hole portion 61 with base material 10 (20,30).And, shown in Figure 10 (a), with cutting element with base material 10 (20,30) break-through vertically in the hole portion 61 so that cutting element with an end face of end face of base material 10 (20,30) and shank 60 be not configured in with having jump same simultaneously in.Like this, under cutting element was not configured in the state in the one side with an end face of end face of base material 10 (20,30) and shank 60 with having jump, cutting element was with the completion that is pressed into to shank 60 of base material 10 (20,30).Thus, cutting element closely be entrenched in shank 60 with base end part and the central portion of base material 10 (20,30) on axially hole portion 61 in and be supported.In addition, under this state, cutting element with base material 10 (20,30) axially on leading section be exposed to the outside.
Then, shown in Figure 10 (b), the outer peripheral face of shank 60 axially on leading section on, form the conical surface 64 that diameter enlarges gradually along with the central portion on axially.In embodiment illustrated, the external diameter of the end of the center side on the shank 60 of the conical surface 64 and cutting element are roughly the same with the external diameter of the main part of base material 10 (20,30).In addition, the conical surface 64 is connected on the outer peripheral face of cutting element with base material 10 (20,30) end of the center side of shank 60 smoothly.
Like this, produce and possess the combination base material 85 of cutting element with base material 10 (20,30) and shank 60.
That kind as described above, the supporting cutting element of the combination base material 85 of relevant this embodiment connects shank 60 with the hole portion 61 of the shank 60 of base material 10 (20,30) vertically.Therefore, the inner peripheral surface of hole portion 61 and cutting element are in contact with one another with the outer peripheral face of base material 10 (20,30) and the resistance that takes place significantly increases.Thereby, prevent reliably cutting element with base material 10 (20,30) and shank 60 around axle relative to rotation and axial relative to move.The total length configuration that in addition, will spread all over combination base material 85 with base material 10 (20,30) by the cutting element that carbide alloy etc. constitutes.Thus, the rigidity of combination base material 85 increases, and guarantees the intensity for cutting load fully.
Then, the 5th embodiment of the present invention is described.
In addition, give identical Reference numeral, omit its explanation for the parts identical with above-mentioned embodiment.
Shown in figure 11, the combination base material 90 of relevant the 5th embodiment possesses cutting element with base material 40 and shank 70.
Cutting element forms multistage cylindric with base material 40, base end part in the axial direction is provided with minor diameter part 41.In addition, in the axial direction leading section is provided with large-diameter portion 42.In addition, cutting element with base material 40 axially on middle body on, be formed with the conical surface 43 that diminishes gradually towards the base end side diameter from axial front.In addition, on the minor diameter part 41 of cutting element, be formed with a plurality of protuberances (not shown) that extend vertically each other week making progress devices spaced apart with base material 40.Through forming these protuberances, the axial cross section that is orthogonal to of rotation restrictions 12 becomes non-positive circle.
In addition, shank 70 forms cylindric, on its leading section, is formed with vertically the hole cylindraceous portion 71 of extending, in the end face upper shed of front.In addition, on the front end (being peristome) of hole portion 71, be formed with along with from front end face towards base end side and the conical surface 72 that diameter diminishes gradually.In addition, the inside diameter D 2 of hole portion 71 is set slightly forr a short time with the diameter d of the main part of the minor diameter part 41 of base material 40 than cutting element.In addition, the external diameter of shank 70 is set greatlyyer with the external diameter of the main part of base material 40 than cutting element.
Then, the order that uses above-mentioned cutting element to make combination base material 90 with base material 40 and shank 70 is described.
At first, the minor diameter part 41 of cutting element with base material 40 is pressed in the hole portion 71 of shank 70, closely chimeric as Figure 11 (a).
At length say, with cutting element with the pushing and pressing of the end of the minor diameter part 41 of base material 40 so that its hole portion 71 with respect to shank 70 is coaxial, with stronger try hard to recommend into.So, the inner peripheral surface of hole portion 71 cutting element with the base end part effect of base material 40 under plastic deformation pushed away expansion slightly so that it spreads all over complete cycle at every turn.And, the base end part of cutting element with base material 40 is pushed in the hole portion 71.And, cutting element is pushed into the deep of hole portion 71 with the base end part of base material 40 shown in Figure 11 (a), cutting element is connected on the conical surface 72 of hole portion 71 with the conical surface 43 of base material 40.Thus, cutting element is with the completion that is pressed into to shank 70 of base material 40.Through more than, cutting element closely is fitted in the hole portion 71 of shank 70 with the base end part of base material 40, cutting element receives shank 70 supporting with base material 40.
Then, shown in Figure 11 (b), with the outer peripheral face cut of shank 70, so that the external diameter of shank 70 is identical with the external diameter of the large-diameter portion 42 of base material 40 with cutting element.In addition, also can with shank 70 and cutting element with the outer peripheral face cut of two parts of base material 40, form and make their external diameter identical.Thus, between the outer peripheral face of cutting element, do not form jump and sloping portion, their outer peripheral face is linked each other in the axial direction with the outer peripheral face of base material 40 and shank 70.
Like this, produce and possess the combination base material 90 of cutting element with base material 40 and shank 70.
That kind as described above, same according to the combination base material 90 of relevant this embodiment with above-mentioned embodiment, prevent that reliably cutting element is with the relative rotation around axle of base material 40 with shank 70.In addition, cutting element forms identical with the external diameter of the external diameter of base material 40 and shank 70, between the outer peripheral face of shank 70 and cutting element are with the outer peripheral face of base material 40, does not form jump and rake, and their outer peripheral face is linked each other.Therefore; Form cutting edge 96 and manufacturing cutting element 95 at the cutting element of this combination base material 90 on base material 40; When this cutting element 95 was used for cut, cutting powder and cutting swarf that processed material cutting is produced can not run into above-mentioned jump and sloping portion.Thereby, these cutting powder and cutting swarf are discharged more smooth-goingly, can precision stably carry out cut well through cutting element 95.
More than, explained preferred embodiment of the present inventionly, but the present invention is not limited to above-mentioned embodiment.In the scope that does not break away from purport of the present invention, can carry out structure additional, omit, replacement, and other changes.The present invention is not limited by above-mentioned explanation, and only is defined by the claims.
For example, cutting element also can be the structure that makes the hole portion strain of shank with the rotation restrictions of base material.
In addition, in the above-described embodiment, the situation that forms the cutting element 95 that possesses slotting cutter through formation cutting edge 96 on combination base material 80,85,90 is illustrated, but the present invention is not limited thereto.That is, cutting element 95 also can be to have drill bit beyond the slotting cutter of cutting edge 96 etc.
In addition, in the above-described embodiment, the situation that on the outer peripheral face of cutting element with the base material, is formed with a plurality of protuberances is illustrated, but protuberance also can only form 1 on outer peripheral face.
In addition, to protuberance spread all on the outer peripheral face of cutting element with the base material cutting element with the base material axially on total length situation about forming be illustrated, but be not limited thereto.That is, protuberance is as long as be formed on cutting element in the hole portion that is inserted in shank with just passable on the base end part of base material at least.That is, also can be only form on the part on the outer peripheral face of base material at cutting element.
In addition, in protuberance, its towards with cutting element be that the situation on plane is illustrated with the surface of the central shaft opposition side of base material, but should the surface also can be curved surface.
In addition, various sizes, angles etc. such as the total length L1 of explanation, total length L2, size W, size T, diameter d, appearance and size D1, inside diameter D 2, length L 3, length L 4 are to be worth arbitrarily in the above-described embodiment, are not limited in each number range of explanation.
In addition, the situation that cutting element is made through the punching machine (mechanical press) of working pressure machinery 100 with the base material has been described, but has been not limited thereto.For example, also can use the press that possesses hydraulic press machine.In addition, also can not use such press and mother metal is shaped to the shape of cutting element with the base material through extrusion process.
In addition, in the above-described embodiment, explained that rotation restrictions 12 comprises from the situation of cutting element with the outstanding protuberance of the outer peripheral face of the main part of base material 10,20,30,40, but be not limited thereto.That is, if rotation restrictions 12 be orthogonal to axial cross section right and wrong positive circular, form restriction cutting element with base material and shank just passable around relatively moving of axle.
In addition, the rotation restrictions also can be that to be orthogonal to axial cross section be elliptical shape.In the case, be located at that to be orthogonal to axial cross section be that meniscate part is a protuberance for the cross sectional shape in the outside of orbicular main part roughly.
Like this; Being orthogonal under the situation that axial cross section is an elliptical shape of rotation restrictions 12; In the hole portion that cutting element is pressed into shank with the base end part of base material or with base end part, be inserted in the portion of hole and implement pressure processing or ca(u)lk processing etc. and when chimeric, the plastic deformation of the inner peripheral surface of hole portion corresponding to the elliptical shape of rotation restrictions.Thus, the inner peripheral surface of the hole portion of shank is deformed into cross section ellipticity, be close to and be fastened on the rotation restrictions of cutting with the tool blank material.As a result, cutting element is closely chimeric with the hole portion of the base end part of base material and shank.The inner peripheral surface of the rotation restrictions of engaging and hole portion is in contact with one another and becomes resistance like this, and cutting element is limited with the relative rotation of base material and shank reliably.
In addition, in the 1st, the 4th, the 5th embodiment, the base end part that will be formed with rotation restrictions 12 at cutting element in the base material is pressed in the hole portion of shank and closely chimeric situation be illustrated.But, make cutting element be not limited to be pressed into base material and the chimeric method of shank.That is, also can replace being pressed into and cutting element closely is fitted in the hole portion of shank with the base end part of base material through embodiment such as above-mentioned pressure processing or ca(u)lk processing etc.Perhaps also can adopt method in addition.
Description of reference numerals
10,20,30,40 cutting elements are used the base material
11,21,31 protuberances
12 rotation restrictions
22 the 1st projections
23 the 2nd projections
24 stage portion
50,60,70 shanks
51,71 hole portions
61 hole portions (hole)
80,85,90 combination base materials
95 cutting elements
96 cutting edges
101,102 metal patterns
The M mother metal

Claims (10)

1. a cutting element is used the base material, be to be a shape, the one of which end to be inserted in the hole portion of shank and to be used the base material by the cutting element of above-mentioned shank supporting,
On an above-mentioned end, be formed with and be orthogonal to axial cross section and be non-orbicular rotation restrictions.
2. cutting element as claimed in claim 1 is used the base material,
Above-mentioned rotation restrictions comprises the outstanding and above-mentioned axially extended protuberance in edge from outer peripheral face.
3. cutting element as claimed in claim 2 is used the base material,
Raised part is formed with a plurality of, and is spaced from each other arranged spaced around axle.
4. use the base material like claim 2 or 3 described cutting elements,
Raised part has the 1st projection, be configured in the 1st projection axially on one distolateral and from high the 2nd projection of outstanding aspect ratio the 1st projection of above-mentioned outer peripheral face be formed on the stage portion between above-mentioned the 1st, the 2nd projection.
5. use the base material like claim 2 or 3 described cutting elements,
Raised part forms along with from along the above-mentioned axial one distolateral taper that narrows down gradually towards the width of another distolateral Zhou Fangxiang along above-mentioned outer peripheral face.
6. use the base material like claim 2 or 3 described cutting elements,
Raised part forms along with from distolateral distolateral from the outstanding height of above-mentioned outer peripheral face taper of step-down gradually towards another along above-mentioned axial one.
7. cutting element as claimed in claim 1 is used the base material,
Above-mentioned rotation restrictions to be orthogonal to above-mentioned axial cross section be elliptical shape.
8. one kind is made up the base material,
Possesses each described cutting element in the claim 1～7 with the base material with have the shank of hole portion;
Above-mentioned rotation restrictions is inserted in the portion of above-mentioned hole, is out of shape corresponding to the shape of above-mentioned rotation restrictions through above-mentioned hole portion, and above-mentioned cutting element is not chimeric revolvably each other with base material and above-mentioned shank.
9. cutting element,
Possesses the described combination base of claim 8 material;
Be formed with cutting edge at above-mentioned cutting element with on the base material and the leading section above-mentioned rotation restrictions opposition side.
10. a cutting element is that each described cutting element possesses with the manufacturing approach of base material in the claim 1～6 with the manufacturing approach of base material:
The operation of configuration mother metal between the pair of metal mould of arranged opposite;
Make these metal patterns approaching each other, when above-mentioned mother metal pressure processing being formed cutting element with the shape of base material, this cutting element with the corresponding position of the direction of the direction opposite each other on the outer peripheral face of base material with being orthogonal to above-mentioned metal pattern on, form operation by above-mentioned rotation restrictions outstanding from above-mentioned outer peripheral face and that constitute along above-mentioned axially extended protuberance.
CN201080015335.0A 2009-04-08 2010-04-06 Cutting tool material, composite material, cutting tool and method for producing a cutting tool material Expired - Fee Related CN102378661B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009-094083 2009-04-08
JP2009094083A JP2010240796A (en) 2009-04-08 2009-04-08 Raw material for cutting tool, composite raw material, and manufacturing method for the cutting tool and the raw material for the cutting tool
PCT/JP2010/002511 WO2010116724A1 (en) 2009-04-08 2010-04-06 Cutting tool material, composite material, cutting tool and method for producing a cutting tool material

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CN102378661A true CN102378661A (en) 2012-03-14
CN102378661B CN102378661B (en) 2015-01-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR561141A (en) * 1923-01-17 1923-10-16 Parisienne De Meches Americain Improvement in the manufacture of small tools with attached shank such as helical bits, etc.
US3872578A (en) * 1974-05-06 1975-03-25 Cyclone Seeder Company Inc Method of connecting a rotating member to a shaft
GB1469296A (en) * 1973-04-04 1977-04-06 Heller Gebr Drill
CN1406700A (en) * 2001-08-28 2003-04-02 马克斯泰克制造有限公司 Assembled drill

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS611315U (en) * 1984-06-09 1986-01-07 住友電気工業株式会社 miniature drill
JPS63119946A (en) * 1986-11-07 1988-05-24 Yorozu Jidosha Kogyo Kk Manufacture of shaft body having spherical part
JPH1110422A (en) * 1997-06-18 1999-01-19 Mitsubishi Materials Corp Manufacture of cutting tool and cutting tool
US6572311B2 (en) * 2000-07-24 2003-06-03 Maxtech Manufacturing Inc. Two-piece drill bits

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR561141A (en) * 1923-01-17 1923-10-16 Parisienne De Meches Americain Improvement in the manufacture of small tools with attached shank such as helical bits, etc.
GB1469296A (en) * 1973-04-04 1977-04-06 Heller Gebr Drill
US3872578A (en) * 1974-05-06 1975-03-25 Cyclone Seeder Company Inc Method of connecting a rotating member to a shaft
CN1406700A (en) * 2001-08-28 2003-04-02 马克斯泰克制造有限公司 Assembled drill

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JP2010240796A (en) 2010-10-28
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