CN101695761A - Cutting blade for processing soft metal materials - Google Patents
Cutting blade for processing soft metal materials Download PDFInfo
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- CN101695761A CN101695761A CN200910208434A CN200910208434A CN101695761A CN 101695761 A CN101695761 A CN 101695761A CN 200910208434 A CN200910208434 A CN 200910208434A CN 200910208434 A CN200910208434 A CN 200910208434A CN 101695761 A CN101695761 A CN 101695761A
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- cutting edge
- metal materials
- soft metal
- blade
- materials processing
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- 238000005520 cutting process Methods 0.000 title claims abstract description 89
- 239000007769 metal material Substances 0.000 title claims abstract description 22
- 238000003913 materials processing Methods 0.000 claims description 18
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 235000019994 cava Nutrition 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 30
- 238000003754 machining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention discloses a cutting blade for processing soft metal materials. The cutting blade comprises an upper surface, a lower surface, a pair of side faces and a blade body which is enclosed by a conical surface for connecting the pair of side faces. The blade body is provided with a blade positioning hole, and the upper surface and the lower surface are connected through the pair of side faces and the conical surface. The conical surface and the upper surface are intersected into a main cutting edge, and the two side faces and the upper surface are intersected into two side cutting edges which are respectively connected on two sides of the main cutting edge. The upper surface is sunk toward the lower surface to form a rake face, a concave curved surface for guiding chips and more than two chip breakers in a shape of an elliptical lug boss. The chip breakers are uniformly distributed in a height increasing stepped shape from a position close to the main cutting edge to the blade positioning hole. The concave curved surface is connected between two adjacent chip breakers; and the rake face extends toward the middle of the upper surface from the main cutting edge and two side cutting edges, and is connected with the concave curved surface. The cutting blade has the advantages of controlling shapes and flow directions of the chips, decreasing the contact between the chips and the upper surface of the blade, and reducing the cutting temperature.
Description
Technical field
The present invention relates to a kind of metal cutting turning insert, relate in particular to the cutting tip that is used for soft metal materials processing.
Background technology
Be directed to and generally have a sharp anterior angle and a chip removal space in the turning insert structure of soft metal materials processing, be connected with a plane or an arc surface between rake face and the chip removal platform in this class formation with big opening.When machining, smear metal is positioned at the cutting edge excision of insert tip, slides plane or the arc surface that is connected to the chip removal platform along rake face then, discharges through the chip removal platform more like this.For the soft metal material, in process, can obtain an initial bending, smear metal may be moved extension along rake face at the chip removal platform with integral form, and curling naturally dropping, cutting temperature is raise, for the processing of soft metal material, smear metal and rake face contact and the rising of cutting temperature can make smear metal cohere on the rake face of blade, cause the actual processing anterior angle of blade to change.In this process to the curling of smear metal, control or precognition that the flow direction of smear metal and smear metal and contacting of rake face can't be artificial, smear metal also is difficult to fracture, and causes smear metal to be twined mutually, damages the finished work surface and causes product glossiness not reach requirement.
In the prior art, cutting tip with improvement back chip breaker is disclosed as U.S. Pat 6217264B1, it has given control to smear metal with contacting of rake face at chip removal platform place, can reduce cutting temperature, but its point of a knife place does not have that to draw bits structure and point of a knife too level and smooth with being connected of rake face, and curling the and flow direction to smear metal does not give better controlled in cutting process.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, and the cutting tip that is used for soft metal materials processing that a kind of shape of controlling smear metal contacts with the upper surface of blade with the flow direction, minimizing smear metal, cutting temperature reduces is provided.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of cutting tip that is used for soft metal materials processing, comprise by upper surface, lower surface, a pair of side and connect this blade body that taper seat surrounded to the side, described blade body is provided with the blade locating hole, described upper surface is connected with taper seat the side by this with lower surface, taper seat and upper surface intersect the formation main cutting edge, two sides and upper surface intersect two side cutting edges that formation is connected to the main cutting edge both sides, described upper surface caves in to lower surface, form rake face, two above chip breakers that are used for the concave curved surface of directs chips and are oval boss shape, described chip breaker is from being the stepped even distribution that highly increases progressively to the blade locating hole near the main cutting edge place, described concave curved surface is connected between adjacent two chip breakers, described rake face extends to upper surface middle part from main cutting edge and two side cutting edges, and joins with concave curved surface.
The interlude of adjacent two chip breakers is connected with protruding cylinder surface, and the protruding cylinder surface both sides directly and concave curved surface joins or join by transition plane and concave curved surface.
Be 0.1mm~0.8mm near the chip breaker of main cutting edge to the shortest horizontal range b of described main cutting edge peak, the shortest vertical range c is 0.03mm~0.36mm.
Be 0.02mm~0.15mm near the chip breaker peak of main cutting edge to the vertical range e of rake face.
The difference in height d of adjacent two protruding cylinder surfaces is 0.02mm~0.2mm before and after the described chip breaker.
The vertical range f of described chip breaker least significant end and sides adjacent cutting edge is 0.1mm~1.2mm.
Vertical vertical section angle θ of the rake face at described side cutting edge place and blade is 70 °~75 °.
The volume bits angle η that the rake face at described side cutting edge place and chip breaker form is 130 °~160 °.
Compared with prior art, the invention has the advantages that: upper surface caves in to lower surface, two above chip breakers that form rake face, are used for the concave curved surface of directs chips and are oval boss shape, concave curved surface and chip breaker form along slip-stream linearly lead, the chip removal structure, make smear metal after concave curved surface and chip breaker guiding, curl naturally, cut off, be directed, discharge machining area smoothly; Chip breaker is from being the stepped even distribution that highly increases progressively to the blade locating hole near the main cutting edge place, can reduce contacting of smear metal and blade upper surface, thereby reduce the friction of smear metal and blade upper surface, reduce cutting temperature effectively, thereby prolonged the service life of blade.The interlude of adjacent two chip breakers is connected with protruding cylinder surface, protruding cylinder surface both sides and concave curved surface join, this protruding cylinder surface can make the smear metal nature to the deflection of protruding cylinder surface both sides, helping smear metal discharges from the blade both sides smoothly, avoid smear metal to drop on processed surface of the work, thereby improve crudy.Main cutting edge of the present invention is higher than the side cutting edge, is space multistory and distributes, and has increased the contact area of cutting edge and workpiece, be convenient to excise swimmingly workpiece material, make point of a knife have enough intensity again simultaneously, cut brisk, accelerate cutting speed, improved production efficiency.
Description of drawings
Fig. 1 is first perspective view of the present invention;
Fig. 2 is second perspective view of the present invention;
Fig. 3 is a blade surface structure enlarged diagram of the present invention;
Fig. 4 is the S-S cross section view of Fig. 3;
Fig. 5 is the T-T cross section view of Fig. 3;
Fig. 6 is that the A of Fig. 1 is to enlarged drawing.
Each label is represented among the figure:
1, upper surface 2, lower surface
3, side 4, taper seat
5, blade locating hole 6, main cutting edge
7, side cutting edge 8, vertical vertical section
9, back knife face 11, rake face
12, concave curved surface 13, chip breaker
14, protruding cylinder surface 15, transition plane
The specific embodiment
Extremely shown in Figure 6 as Fig. 1, a kind of cutting tip that is used for soft metal materials processing of the present invention, has the basic configuration that is similar to rhombus, comprise by upper surface 1, lower surface 2, the blade body that a pair of side 3 and taper seat 4 are surrounded, the central authorities of blade body are provided with blade locating hole 5, upper surface 1 is connected with taper seat 4 side 3 by this with lower surface 2, taper seat 4 intersects formation main cutting edge 6 with upper surface 1, two side cutting edges 7 that formation is connected to main cutting edge 6 both sides are intersected with upper surface 1 in two sides 3, main cutting edge 6 and two side cutting edges 7 are arranged in vertical vertical section 8 bilateral symmetry of blade, main cutting edge 6 connects into the spatially spiral wire shaped with side cutting edge 7, and the point midway of main cutting edge 6 is the highest, upper surface 1 is with vertically the intersection of vertical section 8 and the angle α that lower surface 2 forms are the anterior angle of blade, anterior angle α is 20 °~25 °, anterior angle α is 25 ° in the present embodiment, two sides 3 link to each other by taper seat 4, and to form relief angle β be 5 °~10 ° back knife face 9, and relief angle β is 7 ° in the present embodiment.The cutting tip that is used for soft metal materials processing of the present invention, its cutting edge is the spatially spiral line structure, increased the contact area of cutting edge and workpiece, be convenient to excise swimmingly workpiece material, made point of a knife have enough intensity again simultaneously, and have bigger anterior angle and relief angle, make blade sharper, cut more briskly, improved production efficiency, can also avoid simultaneously adding the interference of knife face 9 and workpiece after man-hour, more convenient to use, flexible.Upper surface 1 is to lower surface 2 depressions, two above chip breakers 13 that form rake face 11, are used for the concave curved surface 12 of directs chips and are oval boss shape, chip breaker 13 is from being the stepped even distribution that highly increases progressively to blade locating hole 5 near main cutting edge 6 places, concave curved surface 12 is connected between adjacent two chip breakers 13, rake face 11 extends to upper surface 1 middle part from main cutting edge 6 and two side cutting edges 7, and joins with concave curved surface 12.Concave curved surface 12 forms along the linear dust lead of slip-stream with chip breaker 13, the chip removal structure, smear metal is curled after concave curved surface 12 and chip breaker 13 guiding naturally, cut off, be directed smoothly, discharge machining area, smear metal is flowed out from rake face 11, and enter concave curved surface 12 moulding in advance along rake face 11, smear metal continues to flow under the guiding function of concave curved surface 12, when running into chip breaker 13, be lifted, directs chips flows along the concave curved surface 12 of chip breaker 13 and the connection of this chip breaker 13 rears, effectively directs chips is clocklike to cutter one side flow, and be curled into the smear metal of C shape and discharge smoothly from blade one side, thereby control and guiding have been strengthened to smear metal formation, machining accuracy and workpiece surface quality have been improved, simultaneously in the process that smear metal is discharged, reduced smear metal and blade upper surface 1 contact and thereby friction lowered the cutting temperature in the process, the service life of having improved blade.The interlude of adjacent two chip breakers 13 is connected with protruding cylinder surface 14, protruding cylinder surface 14 both sides directly and concave curved surface 12 join, perhaps when the big width of chip breaker 13 tools, protruding cylinder surface 14 joins by transition plane 15 and concave curved surface 12, protruding cylinder surface 14, concave curved surface 12 and transition plane 15 constitute along sliding oncus structure, and this oncus structure distributes in vertical vertical section 8 bilateral symmetry, therefore makes the cutting tip that is used for soft metal materials processing of the present invention can be applicable to left and right two kinds of knife bars simultaneously.This protruding cylinder surface 14 can make the smear metal nature to protruding cylinder surface 14 both sides deflections, help smear metal and discharge from the blade both sides smoothly, avoid smear metal to drop on the surface of workpiece to be machined, thereby improve crudy.Be 0.1mm~0.8mm near the chip breaker 13 of main cutting edge 6 to the shortest horizontal range b of main cutting edge 6 peaks, the shortest vertical range c is 0.03mm~0.36mm, and in the present embodiment, b is 0.715mm, and c is 0.312mm.Be 0.02mm~0.15mm near chip breaker 13 peaks of main cutting edge 6 to the vertical range e of rake face 11, in the present embodiment, e is 0.066mm.The difference in height d of adjacent two protruding cylinder surfaces 14 in chip breaker 13 front and back is 0.02mm~0.2mm, and in the present embodiment, d is 0.037mm.The vertical range f of chip breaker 13 least significant ends and sides adjacent cutting edge 7 is 0.1mm~1.2mm, and in the present embodiment, f is 0.656mm.The rake face 11 at side cutting edge 7 places is 70 °~75 ° with vertical vertical section 8 angle θ of blade, and in the present embodiment, θ is 74 °.The rake face 11 at side cutting edge 7 places is 130 °~160 ° with the volume bits angle η that chip breaker 13 forms, and in the present embodiment, η is 152 °.
The foregoing description only is a preferred implementation of the present invention; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from principle of the present invention; can also make some equivalents, these equivalents all should be considered as protection scope of the present invention.
Claims (10)
1. cutting tip that is used for soft metal materials processing, comprise by upper surface (1), lower surface (2), a pair of side (3) and connect the blade body that this taper seat to side (3) (4) is surrounded, described blade body is provided with blade locating hole (5), described upper surface (1) is connected with taper seat (4) side (3) by this with lower surface (2), taper seat (4) intersects formation main cutting edge (6) with upper surface (1), two side cutting edges (7) that formation is connected to main cutting edge (6) both sides are intersected with upper surface (1) in two sides (3), it is characterized in that: described upper surface (1) caves in to lower surface (2), form rake face (11), two the above chip breakers (13) that are used for the concave curved surface (12) of directs chips and are oval boss shape, described chip breaker (13) is from locating to be the stepped even distribution that highly increases progressively to blade locating hole (5) near main cutting edge (6), described concave curved surface (12) is connected between adjacent two chip breakers (13), described rake face (11) extends to upper surface (1) middle part from main cutting edge (6) and two side cutting edges (7), and joins with concave curved surface (12).
2. the cutting tip that is used for soft metal materials processing according to claim 1, it is characterized in that: the interlude of adjacent two chip breakers (13) is connected with protruding cylinder surface (14), and protruding cylinder surface (14) both sides are directly with concave curved surface (12) joins or join by transition plane (15) and concave curved surface (12).
3. the cutting tip that is used for soft metal materials processing according to claim 1 and 2, it is characterized in that: be 0.1mm~0.8mm near the chip breaker (13) of main cutting edge (6) to the shortest horizontal range b of described main cutting edge (6) peak, the shortest vertical range c is 0.03mm~0.36mm.
4. the cutting tip that is used for soft metal materials processing according to claim 1 and 2 is characterized in that: be 0.02mm~0.15mm near chip breaker (13) peak of main cutting edge (6) to the vertical range e of rake face (11).
5. the cutting tip that is used for soft metal materials processing according to claim 3 is characterized in that: be 0.02mm~0.15mm near chip breaker (13) peak of main cutting edge (6) to the vertical range e of rake face (11).
6. the cutting tip that is used for soft metal materials processing according to claim 1 and 2 is characterized in that: the difference in height d of adjacent two protruding cylinder surfaces (14) is 0.02mm~0.2mm before and after the described chip breaker (13).
7. the cutting tip that is used for soft metal materials processing according to claim 5 is characterized in that: the difference in height d of adjacent two protruding cylinder surfaces (14) is 0.02mm~0.2mm before and after the described chip breaker (13).
8. the cutting tip that is used for soft metal materials processing according to claim 7 is characterized in that: the vertical range f of described chip breaker (13) least significant end and sides adjacent cutting edge (7) is 0.1mm~1.2mm.
9. the cutting tip that is used for soft metal materials processing according to claim 8 is characterized in that: the rake face (11) that described side cutting edge (7) is located is 70 °~75 ° with vertical vertical section (8) angle θ of blade.
10. the cutting tip that is used for soft metal materials processing according to claim 9 is characterized in that: the rake face (11) that described side cutting edge (7) is located is 130 °~160 ° with the volume bits angle η that chip breaker (13) forms.
Priority Applications (1)
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CN200910208434XA CN101695761B (en) | 2009-10-23 | 2009-10-23 | Cutting blade for processing soft metal materials |
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CN200910208434XA CN101695761B (en) | 2009-10-23 | 2009-10-23 | Cutting blade for processing soft metal materials |
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CN101695761A true CN101695761A (en) | 2010-04-21 |
CN101695761B CN101695761B (en) | 2012-08-22 |
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Cited By (7)
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CN103009333A (en) * | 2012-12-24 | 2013-04-03 | 株洲欧科亿硬质合金有限公司 | Indexable cutting insert for rough machining |
CN103008702A (en) * | 2012-12-24 | 2013-04-03 | 株洲欧科亿硬质合金有限公司 | Polygonal cutting blade for processing soft metal material |
CN107848038A (en) * | 2015-09-24 | 2018-03-27 | 韩国冶金株式会社 | Cutting tip |
CN109420780A (en) * | 2017-08-22 | 2019-03-05 | 江苏扬碟钻石工具有限公司 | A kind of ridge-roof type turning insert |
WO2020120132A1 (en) | 2018-12-12 | 2020-06-18 | Phoenix Contact Gmbh & Co. Kg | Cutting part and lathe |
CN113056341A (en) * | 2018-12-20 | 2021-06-29 | 株洲钻石切削刀具欧洲有限公司 | cutting tool |
CN113618098A (en) * | 2021-08-06 | 2021-11-09 | 自贡硬质合金有限责任公司 | Cutting blade made of soft metal material |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE508452C2 (en) * | 1992-07-02 | 1998-10-05 | Sandvik Ab | Cuts for chip separating processing |
US6217264B1 (en) * | 1998-05-30 | 2001-04-17 | Korloy, Inc. | Cutting insert having an improved chip breaker |
JP3812473B2 (en) * | 2001-11-20 | 2006-08-23 | 三菱マテリアル株式会社 | Throwaway tip |
US7934891B2 (en) * | 2005-07-05 | 2011-05-03 | Seco Tools Ab | Cutting insert for turning with a recess intended to facilitate flow of a cooling jet |
CN100369704C (en) * | 2005-12-27 | 2008-02-20 | 株洲钻石切削刀具股份有限公司 | Reversible holes turning insert |
JP4967721B2 (en) * | 2007-03-07 | 2012-07-04 | 三菱マテリアル株式会社 | Cutting insert |
-
2009
- 2009-10-23 CN CN200910208434XA patent/CN101695761B/en active Active
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CN103009333A (en) * | 2012-12-24 | 2013-04-03 | 株洲欧科亿硬质合金有限公司 | Indexable cutting insert for rough machining |
CN103008702A (en) * | 2012-12-24 | 2013-04-03 | 株洲欧科亿硬质合金有限公司 | Polygonal cutting blade for processing soft metal material |
CN103009333B (en) * | 2012-12-24 | 2015-01-21 | 株洲欧科亿硬质合金有限公司 | Indexable cutting insert for rough machining |
CN107848038A (en) * | 2015-09-24 | 2018-03-27 | 韩国冶金株式会社 | Cutting tip |
US10493535B2 (en) | 2015-09-24 | 2019-12-03 | Korloy Inc | Cutting insert |
CN107848038B (en) * | 2015-09-24 | 2020-12-18 | 韩国冶金株式会社 | cutting insert |
CN109420780A (en) * | 2017-08-22 | 2019-03-05 | 江苏扬碟钻石工具有限公司 | A kind of ridge-roof type turning insert |
BE1026861B1 (en) * | 2018-12-12 | 2020-07-13 | Phoenix Contact Gmbh & Co | Cutting part and lathe |
BE1026861A1 (en) | 2018-12-12 | 2020-07-09 | Phoenix Contact Gmbh & Co | Cutting part and lathe |
WO2020120132A1 (en) | 2018-12-12 | 2020-06-18 | Phoenix Contact Gmbh & Co. Kg | Cutting part and lathe |
JP2022513824A (en) * | 2018-12-12 | 2022-02-09 | フェニックス コンタクト ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | Cutting members and lathes |
JP7482132B2 (en) | 2018-12-12 | 2024-05-13 | フェニックス コンタクト ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | Cutting materials and lathes |
US12011766B2 (en) | 2018-12-12 | 2024-06-18 | Phoenix Contact Gmbh & Co. Kg | Cutting part and lathe |
CN113056341A (en) * | 2018-12-20 | 2021-06-29 | 株洲钻石切削刀具欧洲有限公司 | cutting tool |
CN113618098A (en) * | 2021-08-06 | 2021-11-09 | 自贡硬质合金有限责任公司 | Cutting blade made of soft metal material |
CN113618098B (en) * | 2021-08-06 | 2024-07-09 | 自贡硬质合金有限责任公司 | Soft metal material cutting blade |
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