CN101695760B - PCBN cutter blade with knifepoint provided with scrap sweeping grooves - Google Patents

PCBN cutter blade with knifepoint provided with scrap sweeping grooves Download PDF

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Publication number
CN101695760B
CN101695760B CN2009100446543A CN200910044654A CN101695760B CN 101695760 B CN101695760 B CN 101695760B CN 2009100446543 A CN2009100446543 A CN 2009100446543A CN 200910044654 A CN200910044654 A CN 200910044654A CN 101695760 B CN101695760 B CN 101695760B
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cutting
blade
groove
pcbn
cutting tips
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CN101695760A (en
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姚学祥
王社权
李屏
胡美艳
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Zhuzhou Cemented Carbide Cutting Tools Co Ltd
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Zhuzhou Cemented Carbide Cutting Tools Co Ltd
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Abstract

The invention discloses PCBN cutter blade with a knifepoint provided with scrap sweeping grooves, comprising a cutter blade basal body (1) and a cutting knifepoint (2). Scrap sweeping grooves (3) are arranged on the cutting knifepoint (2) along the cutting edge or the cutting band (4) of the cutter blade in parallel. Each scrap sweeping groove (3) is of a curved groove, and the sectional contour line of any cross section can be a circle arc line, an elliptic arc line or a parabola. The PCBN cutter blade has the advantages of small damage on the surface of a workpiece, high machining precision, good machining quality, long service life, and the like.

Description

Cutting tips partly is provided with the PCBN blade of chip curling groove
Technical field
The present invention relates to a kind of insert for metal cutting, relate in particular to a kind of cutting tip of doing specially treated at the cutting edge nose part.
Background technology
Polycrystalline cubic boron nitride (PCBN) is a kind of superhard material that manual work is synthesized under superhigh temperature and condition of high voltage, has very high hardness, is difficult to shape.This material has been can only be processed to not have the flat plate blade of flute profile or constitute the simple anterior angle blade of blade by straight line since emerging always.Patent ZL200820123325.9 discloses PCD or the PCBN blade that a kind of rake face has chip-breaker; In this patent specification its chip-breaker 13 of record be configured to around blade 12 is downward-sloping certain size arranged, being inclined upwardly extends to rake face 11 and constitutes grooves (referring to accompanying drawing 1) again, the effect of this groove is in process; Making machined material pass through chip-breaker generation plastic deformation ruptures; So that process smooth and easyly, mention machining accuracy and quality, prolong blade life.Yet; Description by this patent specification content and accompanying drawing can be found out; This chip-breaker 13 only is meant has processed an anterior angle on the rake face 11 of blade base 1, the outline line of these chip-breaker 13 cross sections is " V " font (seeing accompanying drawing 1), and its preceding groove face 14 is a plane with back groove face 15; Though objectively can play the effect of chip breaking, the chip breaking effect is unsatisfactory.On the other hand; The real work position of considering blade is only in the point of a knife part; And the chip-breaker 13 of blade has occupied the most area of rake face 11 in this patent; And blade base 1 is not done strict the differentiation with the material of point of a knife part, all adopts expensive PCD or PCBN preparation, and this also is a kind of great waste for production and processing.
Summary of the invention
The technical problem that the present invention will solve is the deficiency that overcomes prior art, provides a kind of surface of the work is damaged PCBN blade little, that cutting tips that machining accuracy is high, crudy good, the life-span is long partly is provided with chip curling groove.
For solving the problems of the technologies described above; The technical scheme that the present invention proposes is the PCBN blade that a kind of cutting tips partly is provided with chip curling groove; Said PCBN blade comprises blade base and cutting tips; The chip curling groove that is opened in the cutting tips place is arranged in parallel along the cutting edge or the cutting land of blade, and it is characterized in that: said chip curling groove is a curved surface groove.Said curved surface groove can be set to enclosed type or opening groove according to the needs of processing in the practice.
In the above-mentioned technical scheme, the range line profile of said curved surface groove on arbitrary cross section can be the smooth combination of multiple curved line, is preferably circular arc line, oval camber line or parabola.Said arbitrary cross section is meant arbitrary perpendicular perpendicular to cutting edge or cutting land.Range line profile is the volume bits that circular arc line, oval camber line or parabolical curved surface groove more help chip curling groove, more helps improving simultaneously the sharpness of cutting edge.
In the above-mentioned technical scheme; The all available PCBN material of said blade base and cutting tips, but cost is higher relatively, so blade base is preferably Hardmetal materials; Cutting tips then adopts the PCBN material, and said cutting tips and blade base are fixed through high-frequency welding again.Because the PCBN material mainly in the cutting tips part, is therefore only partly adopted in cutting tips in the real work position of blade, can under the prerequisite that guarantees stock-removing efficiency and blade quality, reduce cost greatly.On this basis, the ratio of the thickness of the thickness of said cutting tips and blade base is preferably 1: (1～15).
Be consideration equally from cost; In the above-mentioned technical scheme; Another kind of preferred material arrangements mode is: said blade base is a Hardmetal materials; Said cutting tips comprises the cutting blade tip on top layer and the point of a knife substrate of nexine, and said cutting blade tip is the PCBN material, and said point of a knife substrate is a Hardmetal materials.Under this kind situation, the point of a knife substrate is the transition zone that the cutting blade tip is connected with blade base, and adhesion is more firm than welding manner like this.On this basis, the ratio of the thickness of the thickness of said cutting tips and blade base is preferably 1: (1～15); The ratio of the thickness of the thickness of said cutting blade tip and point of a knife substrate is preferably 1: (1～5).
In the above-mentioned technical scheme, the groove width w of said curved surface groove is preferably 0.5mm～3mm, and (optimum be 1.0mm～2.0mm), the groove depth d of curved surface groove is preferably 0.05mm～0.5mm and (optimumly is 0.08mm～0.2mm).Different according to the difference of blade sizes and use occasion, the value of groove depth and groove width also can adjust accordingly, but value more meets the value standard of ISO numerical control blade flute profile in aforementioned preferred range.
In the above-mentioned technical scheme, the shape of said cutting tips is preferably triangle, arc, circular, annular, circle ring sector, fan-shaped or polygon.The shape of said cutting tips generally should match with the shape of blade base chamfered groove; Be that circular shear blade can be selected circle, annular or arc cutting tips; Triangle or diamond shaped insert can be selected leg-of-mutton cutting tips or the like, so not only make things convenient for processing and fabricating, also make things convenient for using and operating of blade; And structure is compact, attractive in appearance more, and waste of material is less.
In the above-mentioned technical scheme, if the cutting land is wide, then the sharpness of blade maybe be limited; If the cutting land is narrow, then the intensity of cutting edge possibly reduce, and therefore takes all factors into consideration each item factor, and the width k of said cutting land is preferably 0.001mm～0.5mm in well known range.
Compared with prior art; The invention has the advantages that: at first; Because chip curling groove is the smooth surface groove in the blade of the present invention; Therefore the PCBN blade that partly is provided with chip curling groove with cutting tips of the present invention is in carrying out cutting process; Can flow out (general plane groove is difficult to reach this technique effect) so that the direction that the smear metal of machined material sets according to chip curling groove is curled, so just can effectively avoid smear metal that the surface of the work of having processed is caused damage, improve machining accuracy and crudy; Chip curling groove of the present invention on the other hand can advantageously improve the sharpness of blade cut sword, reduces cutting resistance, prolongs the service life of blade.In addition; As further improvement of the present invention, the present invention also is further optimized on the structure of blade, material arrangements and improves, and makes that blade structure of the present invention is compact more, the blade processing cost is littler; Outward appearance is more attractive in appearance, is convenient to production and processing and manipulates.
Description of drawings
Fig. 1 is the PCBN blade structure sketch map of existing band chip-breaker;
Fig. 2 is the vertical view of the PCBN blade in the embodiment of the invention 1;
Fig. 3 is the cutaway view at A-A place among Fig. 2;
Fig. 4 is the partial enlarged drawing at B place among Fig. 3;
Fig. 5 is the PCBN blade structure sketch map that has opening chip curling groove;
Fig. 6 is the vertical view of the PCBN blade in the embodiment of the invention 2;
Fig. 7 is the cutaway view at C-C place among Fig. 6;
Fig. 8 is the partial enlarged drawing at D place among Fig. 7;
Fig. 9 is the polygon blade structure sketch map that has chip curling groove.
Marginal data:
1, blade base 11, rake face
12, blade 13, chip-breaker
14, preceding groove face 15, back groove face
2, cutting tips 21, cutting blade tip
22, point of a knife substrate 3, chip curling groove
4, cutting land
The specific embodiment
Embodiment 1:
Like Fig. 2～PCBN blade a kind of of the present invention shown in Figure 4, affixed cutting tips 2 on 1 one jiaos of the blade base 1 that comprises rhombus and the blade bases, cutting tips 2 be shaped as triangle.Cutting tips 2 comprises the cutting blade tip 21 on top layer and the point of a knife substrate 22 of nexine again, and cutting blade tip 21 is to be connected through 22 transition of point of a knife substrate with blade base 1.Blade base 1 is Hardmetal materials with point of a knife substrate 22, and cutting blade tip 21 is the PCBN material.The thickness H of blade base 1 is 4.76mm, the thickness h of cutting tips 2 1Be 1.6mm, the thickness h of cutting blade tip 21 2Be 0.8mm.
Cutting blade tip 21 surfaces in cutting tips 2; The cutting land 4 parallel chip curling grooves 3 that offer along blade; Chip curling groove 3 is a smooth surface groove, and the preceding groove face 14 of this curved surface groove extends to cutting plane, land 4 place, and the back groove face 15 of this curved surface groove extends to the upper surface of cutting blade tip 21.The range line profile of this curved surface groove on arbitrary cross section (arbitrary perpendicular perpendicular to the cutting land) is a parabola (referring to Fig. 4).The width k of cutting land 4 is 0.05mm, and the groove width w of curved surface groove is 1.5mm, and the groove depth d of curved surface groove is 0.15mm.The arc radius r at cutting tips 2 fillet places is 0.4mm.The curved surface groove of present embodiment is the enclosed type groove, also can be processed into opening groove as shown in Figure 5 according to demand in practice certainly.
The PCBN blade of above-mentioned present embodiment is to prepare through following method: utilize high-frequency welding or other conventional high temperature infiltration modes earlier; Cutting tips 2 is secured on the carbide blade base 1; After grinding processing, utilize laser engraving machine (model: LASERTEC40 again; The Germany De Maji DMG of Co., Ltd produces) carry out cutting on cutting blade tip 21 surfaces of cutting tips 2; Earlier the three-dimensional CAD model data of present embodiment PCBN blade cut blade tip 21 are imported in this laser engraving machine during laser grooving; Drive high energy beam current (high energy beam current mainly is meant laser line, electronic beam current etc.), the PCBN blade of present embodiment is accomplished and after conventional subsequent treatment, is obtained in cutting.
Adopt the PCBN blade of this examples preparation, cooperate suitable cutter and cutting parameter, can control the outflow direction of smear metal effectively, avoid smear metal that manufactured surface of the work is caused damage well.On the other hand,, reduced cutting resistance effectively because the present embodiment blade has sharper cutting edge, under the situation of equal stock-removing efficiency, the service life that can improve blade widely; Or under the situation in equal service life, can improve stock-removing efficiency widely.
Embodiment 2:
Like Fig. 6～PCBN blade a kind of of the present invention shown in Figure 8, comprise affixed cutting tips 2 on circular blade base 1 and the blade base 1, cutting tips 2 be shaped as annular.Cutting tips 2 comprises the cutting blade tip 21 on top layer and the point of a knife substrate 22 of nexine again, and cutting blade tip 21 is to be connected through 22 transition of point of a knife substrate with blade base 1.Blade base 1 is Hardmetal materials with point of a knife substrate 2, and cutting blade tip 21 is the PCBN material.The thickness H of blade base 1 is 6.35mm, the thickness h of cutting tips 2 1Be 1.6mm, the thickness h of cutting blade tip 21 2Be 0.8mm.
Cutting blade tip 21 surfaces in cutting tips 2; The cutting land 4 parallel annular chip curling grooves 3 that offer along blade; Chip curling groove 3 is a smooth surface groove; The preceding groove face 14 of this curved surface groove extends to cutting plane, land 4 place, and the back groove face 15 of this curved surface groove extends to the upper surface of cutting blade tip 21.The range line profile of this curved surface groove on arbitrary cross section (arbitrary perpendicular perpendicular to the cutting land) is an oval camber line (see figure 8).The width k of cutting land 4 is 0.1mm, and the groove width w of curved surface groove is 2.0mm, and the groove depth d of curved surface groove is 0.2mm.
The PCBN blade of above-mentioned present embodiment is to prepare through following method: utilize high-frequency welding or other conventional high temperature infiltration modes earlier; Cutting tips 2 is secured on the carbide blade base 1; After grinding processing, utilize laser engraving machine (model: LASERTEC40 again; The Germany De Maji DMG of Co., Ltd produces) carry out cutting on cutting blade tip 21 surfaces of cutting tips 2; Earlier the three-dimensional CAD model data of present embodiment PCBN blade cut blade tip 21 are imported in this laser engraving machine during laser grooving; Drive high energy beam current (high energy beam current mainly is meant laser line, electronic beam current etc.), the PCBN blade of present embodiment is accomplished and after conventional subsequent treatment, is obtained in cutting.
Adopt the PCBN blade of this examples preparation, cooperate suitable cutter and cutting parameter, can control the outflow direction of smear metal effectively, avoid smear metal that manufactured surface of the work is caused damage well.On the other hand,, reduced cutting resistance effectively because the present embodiment blade has sharper cutting edge, under the situation of equal stock-removing efficiency, the service life that can improve blade widely; Or under the situation in equal service life, can improve stock-removing efficiency widely.
The present invention also can be applicable to polygon blade as shown in Figure 9 except the circular shear blade of the diamond shaped insert that can be applicable to the foregoing description 1, embodiment 2, on this polygon blade, the triangle of embodiment 1 still can be processed in the bottom surface of cutting tips.
Above-mentioned each embodiment only is for more clearly describing content of the present invention, but can not be construed as limiting the invention, any and the present invention constitute substantive identical or the technical scheme that is equal to all in protection scope of the present invention.

Claims (1)

1. a cutting tips partly is provided with the PCBN blade of chip curling groove; Said PCBN blade comprises blade base (1) and cutting tips (2); Be opened in chip curling groove (3) that cutting tips (2) locates and be arranged in parallel along the cutting land (4) of blade, it is characterized in that: said chip curling groove (3) is a curved surface groove; Said blade base (1) is a Hardmetal materials; Said cutting tips (2) is for Polycrystalline Cubic Boron Nitride or be the composite construction of point of a knife substrate (22) that comprises cutting blade tip (21) and the nexine Hardmetal materials of top layer Polycrystalline Cubic Boron Nitride; Said cutting tips (2) be shaped as triangle or annular;
The range line profile of said curved surface groove on arbitrary cross section is oval camber line or parabola; The groove width w of said curved surface groove is 0.5mm～3mm, and the groove depth d of curved surface groove is 0.05mm～0.5mm; The width k of said cutting land (4) is 0.001mm～0.5mm;
The ratio of the thickness of the thickness of said cutting tips (2) and blade base (1) is 1: (1～15); The ratio of the thickness of the thickness of said cutting blade tip (21) and point of a knife substrate (22) is 1: (1～5).
CN2009100446543A 2009-10-29 2009-10-29 PCBN cutter blade with knifepoint provided with scrap sweeping grooves Active CN101695760B (en)

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Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2484467B1 (en) * 2011-02-03 2014-05-07 Seco Tools AB Cutting insert with symmetrical, radiused cutting edges
CN102198524A (en) * 2011-04-08 2011-09-28 郑州市钻石精密制造有限公司 Mechanical clamped cutting blade used for machining external diameters of various kinds of shafts
CN103192102B (en) * 2013-04-15 2016-12-28 北京沃尔德金刚石工具股份有限公司 A kind of superhard cutting blade of band chip-breaker
CN103551609B (en) * 2013-11-08 2016-04-27 江苏切剀刀具有限公司 For the accurately machined turning superhard cutting blade with anti-crescent hollow abrasion groove
TWI579076B (en) * 2014-08-20 2017-04-21 國立臺灣大學 Cutting tool
CN104325163A (en) * 2014-10-24 2015-02-04 杨卫峰 Cutter for processing
US10195673B2 (en) * 2015-12-11 2019-02-05 Kennametal Inc. Ceramic cutting insert and method of making same
CN109420779A (en) * 2017-08-22 2019-03-05 江苏扬碟钻石工具有限公司 A kind of PCBN blade of the asymmetric cutting edge structure of tool arc
CN108030374B (en) * 2018-01-19 2023-03-31 佛山科学技术学院 Household peeler capable of containing garbage
US20210268589A1 (en) * 2018-07-03 2021-09-02 Sumitomo Electric Hardmetal Corp. Cutting insert and method for manufacturing the same
CN110788355A (en) * 2018-08-01 2020-02-14 上海必攀金属切削技术有限公司 CBN (cubic boron nitride) blade and machining method thereof
CN110369743A (en) * 2019-08-19 2019-10-25 北京沃尔德金刚石工具股份有限公司 A kind of PCBN cutter and manufacturing method with chip-breaker
CN111001832B (en) * 2019-12-20 2024-07-02 厦门金鹭特种合金有限公司 PCBN blade with tree-shaped chip breaker

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