CN104439461B - Negative-type milling blade - Google Patents
Negative-type milling blade Download PDFInfo
- Publication number
- CN104439461B CN104439461B CN201410614184.0A CN201410614184A CN104439461B CN 104439461 B CN104439461 B CN 104439461B CN 201410614184 A CN201410614184 A CN 201410614184A CN 104439461 B CN104439461 B CN 104439461B
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- Prior art keywords
- cutting edge
- main cutting
- face
- boss
- minus
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/32—Chip breaking or chip evacuation
- B23C2200/326—Chip breaking or chip evacuation by chip-breaking grooves
Abstract
The invention discloses a negative-type milling blade comprising a blade body, wherein the blade body has an upper surface, a lower surface and a quadrangular peripheral surface and is also provided with a through hole and bosses around the through hole, and a main cutting edge and a smoothing edge are alternately arranged on the peripheral surface in sequence; the main cutting edge has a concave structure and gradually tilts close to opposite surfaces of the upper and lower surfaces from two ends respectively, and a non-tilting smooth middle part of the main cutting edge is formed at a position which is 1/6-1/3 of the length of the edge on the main cutting edge; and the front tool face of the non-tilting smooth middle part of the main cutting edge of the negative-type blade body is connected to the through hole perpendicular to the upper and lower surfaces by extending at a positive angle gently, and an open scrap accommodating groove leading to the through hole is formed at the bosses. According to the negative-type milling blade disclosed by the invention, by designing of the concave structure of the main cutting edge of the cutting blade and combining the design of a special opening structure groove at a bearing surface chip breaker groove of the blade, cutting force distribution and cutting flowing can be optimized, processing of self breaking scraps can be performed, and the processability and stability of a cutter are improved.
Description
Technical field
The present invention relates to metal cutting tool field, more particularly to a kind of machined material is implemented with slabbing processing
Indexable minus milling cutting insert.
Background technology
In slabbing processing, the carrying out that cutting tool repeats during cutting out discontinuously is processed, main cutting
The sword incision to machined material each time all can be subject to huge impact loading, therefore the conjunction of main cutting edge structure design
Rationality will produce tremendous influence to Tool in Cutting performance.
In the prior art, the version for slabbing indexable insert tip, throw away tip main cutting edge has following three kinds: one is
Major cutting edge is designed to straightway the upper and lower surface lying low parallel to cutting tip；Two be major cutting edge be designed to straightway portion but
It is not parallel to the upper and lower surface of cutting tip, form certain gradient with upper and lower surface；Three is that main cutting edge is designed to big u
The arc section of type.
But, all there is certain defect in above existing three kinds of main cutting edge versions.The first cutting blade structure
Form is usually used in the flat board cutting tip without chip-breaker, and the locating surface from upper and lower surface for the chip directly flows by generation
Amount of heat can reduce the performance of cutting tip, the locating surface on the upper and lower surface of the easy scratch of chip simultaneously；Second cutting edge is tied
The cutting tip of configuration formula typically has design chip breaking grooved, but because it is that straightway becomes constant slope by a cutting tooth shape
Extend to another cutting edge, so drawback is to be only used for cutter hub (right hand processing cutter hub or the left hand of single cutting direction
Processing cutter hub), economy is not good；Though the third cutting blade structure form can be simultaneously used for the cutter hub of different cutting directions,
Be big u-shaped cutting edge cut every bit on arc section during workpiece cutting angle inconsistent it is difficult to ensure cutting force
Overall even is distributed, and very difficult whole machine balancing is distributed the axial force and radial force suffered by cutter, easily causes cutter unbalance stress and leads
Cause machine tool chief axis unbalance stress, negative influence is produced to Tool in Cutting performance and machine tool chief axis.
When carrying out machining, the chip of formation is passed through in cutting blade surface and abutment surface flowing, if Chip grooves
Structure design is improper, and one is that chip flow is not smooth, and two is easily to produce more heat in metal cuttings because contact area is excessive, and three is easy
Leave Integrated Chip in cutting blade surface and abutment surface, this all will have a negative impact to cutting performance.
In the prior art, mainly reduce the contact of chip and cutting edge proximal surface by two ways, one is to adopt
The chip breaking grooved pattern structure remained silent, two is to design stepped section between cutting blade surface and proximal surface.
But, in above existing two ways, all there is shortcoming.First, deposited using the trench structure of chip breaking grooved decorative pattern of remaining silent
The drawbacks of be: it is not smooth that the chip-breaker that (1) remains silent is easily caused chip flow in groove；(2) in groove space little Yi formed broken
Little chip is piled up in chip pocket.2nd, existed using the trench structure designing stepped section between cutting blade surface and proximal surface
Drawback is: (1) stepped section structure leads to cutting edge to eliminate more Hardmetal materials, can reduce the overall strong of cutting edge
Degree；(2) this structure design supporting surface is less than cutting edge, and chip can be passed through in the contact of locating surface surface, supporting surface easily
Friction scratch, affects positioning precision.
Content of the invention
It is an object of the invention to overcoming the deficiency of prior art, provide a kind of minus milling cutting insert, by cutting edge
The concave structure design of the main cutting edge of piece, and set using special hatch frame grooved with reference at the chip-breaker of blade support face
Meter, can optimize cutting force distribution and chip flow and carry out processing from chip breaking, improve tool sharpening performance and stability.
The technical solution adopted for the present invention to solve the technical problems is: a kind of minus milling cutting insert, including blade body；
Blade body has upper and lower surface parallel each other, and the tetragon that outer peripheral face is formed, and upper and lower surface intersects institute with outer peripheral face
The angle becoming is right angle；Blade body is provided with the through hole vertically through upper and lower surface, and through hole surrounding is uniformly distributed Set and Positioning
Boss, outer peripheral face interaction configuration main cutting edge and wiper edges successively；Described main cutting edge is concave structure, opens from its two ends
Begin respectively gradually to the close inclination of upper and lower surface opposing face, and the part at the 1/6～1/3 of main cutting edge length forms no to tilt
Flat main cutting edge in the middle part of；Rake face in the middle part of the nonangular flat main cutting edge of described blade body is with gentle
Positive-angle extends for connection to described through hole, and forms the opening chip pocket leading to described through hole at described boss.
Described main cutting edge is concave structure, by being in both sides and in the skew lines portion of specular and be in the nothing at middle part
The flat line part tilting is constituted；The outer end in described skew lines portion is higher than the Set and Positioning face of described boss, described skew lines portion
The inner be less than described boss Set and Positioning face；The described nonangular flat line part being in middle part is connected to the oblique of both sides
Between line part, and the Set and Positioning face less than described boss.
The corresponding rake face of described concave structure main cutting edge is freely scanned the change cutting being formed, being formed by grid surface
Front angle range is between 6 °～25 °.
The rake face corresponding to nonangular flat line part of described concave structure main cutting edge is with gentle positive-angle
Extend for connection to the through hole perpendicular to upper and lower surface, and form the opening chip pocket leading to described through hole at described boss.
Rake face corresponding to the skew lines portion of the main cutting edge of described cutting edge and wiper edges to described boss direction with
Gentle positive-angle extends, and extended surface forms the cutting anterior angle rapidly increasing simultaneously at the distance 1/4～1/3 of boss to cutting edge
The oblique stepped section of self-assembling formation.
The oblique stepped section of the rake face of described cutting edge is by knife before the oblique stepped section of main cutting edge rake face and wiper edges
The oblique stepped section in face is constituted；In described boss, the side corresponding to the oblique stepped section of main cutting edge rake face is set to ramp shaped
Anti- bits face.
The oblique stepped section of described main cutting edge rake face extends to be formed and the anti-bits face of described boss between and caves inward
Indent chip pocket.
Described indent chip pocket is connected with described opening chip pocket, and collectively forms the chip-breaker of blade body.
The small boss of Set and Positioning is uniformly distributed on the upper and lower surface of the through hole surrounding of described blade body, and upper,
The small boss of lower surface is in be mirrored into symmetrically；Four small boss on described upper and lower surface are symmetrically divided with the axis of described through hole
Cloth.
It is respectively equipped with word pit on four small boss on described upper and lower surface.
Described main cutting edge configures and is provided with transition arc with wiper edges interaction and is connected.
A kind of minus milling cutting insert of the present invention, is designed to the blade body of 0 ° of relief angle in square, it includes
Surface, lower surface, and connect the side (i.e. outer peripheral face) on upper and lower surface, for slabbing processing.After this cutting tip is 0 °
The minus cutting tip at angle, has 8 effective main cutting edges and 8 corresponding wiper edges, two-sided indexable 8 times altogether, using warp
Ji property is high.
Compared with prior art, the invention has the beneficial effects as follows:
1st, present invention employs and main cutting edge be designed as concave structure, by be in both sides and in specular skew lines
Portion and the nonangular flat line part composition being in middle part, the outer end in described skew lines portion is higher than the Set and Positioning of described boss
Face, the inner in described skew lines portion is less than the Set and Positioning face of described boss；The described nonangular flat straight line being in middle part
Portion is connected between the skew lines portion on both sides, and the Set and Positioning face less than described boss.This big spill design of the present invention
It is used in combination the special axial rake design of the cutter hub of this cutting tip, when not only can make the processing incision of this cutting tip, cut out
Cutting edge is segmented into unified possible angle and is contacted with machined material priority and leave, and improves cutting edge and integrally cuts and brought
Big resistance or different section cutting edge discontinuity are thus reduce the impact of cutting ability；And the spill master of this cutting tip cuts
Cut the axial force of cutting edge and radial force when the design of sword can be processed with active balance slabbing, it is to avoid lead because radial force is excessive
Cause spindle vibration and cut not brisk negative influence；This cutting tip using special big spill main cutting edge structure design is same
When can be used for right-hand man's cutterhead, there is higher economy.
2nd, present invention employs by main cutting edge be in middle part nonangular flat line part corresponding to rake face with
Gentle positive-angle extends for connection to the through hole perpendicular to upper and lower surface, and opening of described through hole is led in formation at described boss
Mouth chip pocket.And the rake face corresponding to the skew lines portion of the main cutting edge of described cutting edge and wiper edges is to described boss side
Extend to gentle positive-angle, before extended surface forms, at the distance 1/4～1/3 of boss to cutting edge, the cutting rapidly increasing
Angle the oblique stepped section of self-assembling formation.The small boss of Set and Positioning is uniformly distributed on the upper and lower surface of through hole surrounding, in boss
Side corresponding to the oblique stepped section of main cutting edge rake face is set to the anti-bits face of ramp shaped；The spy being formed by said structure
Different structure chip-breaker, under the conditions of different cutting depth, the chip flow of different in width is passed through can be fine during rake face
Minimizing and rake face CONTACT WITH FRICTION, and form natural flow curling and even fly away from cutting tip body from chip breaking, subtract
The heat that few CONTACT WITH FRICTION produces and scratch affect positioning precision, and opening chip pocket further functions as guiding chip flow simultaneously
And the chip space increasing avoids the good action that chip is piled up；Therefore this chip breaking trench structure have optimization chip flow curling and
Even carry out from chip breaking processing function, thus improving tool sharpening performance and stability.
Below in conjunction with drawings and Examples, the present invention is described in further detail；But a kind of minus milling cutter of the present invention
Piece is not limited to embodiment.
Brief description
Fig. 1 is the perspective view of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 is the front view of the present invention；
Fig. 4 is the sectional view of the a-a line along along Fig. 2；
Fig. 5 is the section view rotation figure of the b-b line along along Fig. 2；
Fig. 6 is the c portion enlarged diagram in Fig. 5；
Fig. 7 is the d portion enlarged diagram in Fig. 5；
Fig. 8 is the perspective view that the present invention is matched in cutter hub；
Fig. 9 is the front view that the present invention is matched in cutter hub.
In figure, 1, blade body；10th, small boss；11st, opening chip pocket；12nd, indent chip pocket；13rd, knife after wiper edges
Face；14th, knife face after main cutting edge；15th, small boss is counter considers face to be worth doing；16th, through hole；17th, supporting cutterhead body；18th, coordinate edge bearing body；
2nd, main cutting edge；21st, main cutting edge skew lines portion；22nd, main cutting edge lies low line part；3rd, the transition of main cutting edge and wiper edges
Circular arc；4th, wiper edges；5th, wiper edges rake face；6th, main cutting edge rake face；61st, main cutting edge skew lines portion rake face；62nd, main
Cutting edge lies low line part rake face；7th, the oblique stepped section of main cutting edge rake face；8th, the oblique stepped section of wiper edges rake face；9、
Mark or character pit.
Specific embodiment
Embodiment
Referring to shown in Fig. 1 to Fig. 9, a kind of minus milling cutting insert of the present invention, including blade body 1；Blade body 1 has
Upper and lower surface parallel each other, and the tetragon that outer peripheral face (i.e. side) is formed, upper and lower surface intersects formed with outer peripheral face
Angle is right angle (i.e. the blade body of 0 ° of relief angle)；Described blade body 1 be provided with one vertically through upper and lower surface through hole 16,
The surrounding of through hole 16 is uniformly distributed the boss of Set and Positioning；The upper and lower surface of described blade body 1 forms rake face respectively,
Side forms rear knife face, and the intersection crest line of described rake face and rear knife face forms cutting edge, and described cutting edge includes being in four
While shape while main cutting edge 2 and be in tetragon angle wiper edges 4, i.e. outer peripheral face interaction configuration main cutting edge 2 He successively
Wiper edges 4；Described main cutting edge 2 is concave structure, and described main cutting edge 2 is concave structure, starts respectively gradually from its two ends
To the close inclination of upper and lower surface opposing face, and the part at the 1/6～1/3 of main cutting edge length forms nonangular flat master
In the middle part of cutting edge；That is, main cutting edge 2 is by the nonangular flat line part 22 being in the middle part of main cutting edge and to be in master
Cutting edge both sides are simultaneously constituted in the skew lines portion 21 of specular；The outer end in described skew lines portion 21 is higher than the clamping of described boss
Locating surface, the inner in described skew lines portion 21 is less than the Set and Positioning face of described boss, and described flat line part 22 is connected to two
Between the skew lines portion 21 on side, and the Set and Positioning face less than described boss.The boss on the upper and lower surface of blade body 1 is respectively
It is set to disjunct four small boss 10, and the small boss 10 on upper and lower surface is in be mirrored into symmetrically；The four of described upper and lower surface
Individual small boss 10 is symmetric with the axis of described through hole 16.
A kind of minus milling cutting insert of the present invention, is designed to the blade body of 0 ° of relief angle in square, it includes
Surface, lower surface, and connect the side on upper and lower surface, for slabbing processing.This cutting tip is that the minus of 0 ° of relief angle is cut
Paring blade, has 8 effective main cutting edges and 8 corresponding wiper edges, two-sided indexable 8 times altogether, its usage economy is high.
The upper and lower surface of blade body 1 forms rake face, and rake face is divided into knife before wiper edges rake face 5 and main cutting edge
Face 6, main cutting edge rake face 6 is divided into main cutting edge skew lines portion rake face 61 and main cutting edge flat line part rake face again
62；Side (i.e. outer peripheral face) formed after knife face, rear knife face is divided into knife face 14 after knife face 13 and main cutting edge after wiper edges, rake face
5th, 6 and the intersection crest line of rear knife face 13,14 form cutting edge, cutting edge includes effective main cutting edge 2 and wiper edges 4, Yi Jizhu
Cutting edge and the transition arc 3 of wiper edges, described cutting edge is made up of line part, curve part, tool arc portion, forms big spill
Main cutting edge 2.Described spill main cutting edge 2 is by two sections of skew lines portions 21 in specular and one section of flat line part 22 structure
Become；Two sections of skew lines portion 21 parts are higher than the Set and Positioning face of clamping stationary plane small boss 10, little partially below clamping stationary plane
The Set and Positioning face of boss 10, and be in specular；One section of flat line part 22 is less than the clamping of clamping stationary plane small boss 10
Locating surface.
A kind of minus milling cutting insert of the present invention, described special big spill design is used in combination the cutter hub of this cutting tip
Special axial rake design, not only can make cutting edge during the processing incision of this cutting tip be segmented into unified possible angle and quilt
Rapidoprint successively contacts, and improves cutting edge and integrally enters and brings excessive resistance or different section cutting edge discontinuity thus dropping
The impact of low-machinability energy, is particularly the best results in ap≤2.5mm；And the spill main cutting edge 2 of this cutting tip
The design axial force of cutting edge and radial force when can use the processing of active balance slabbing, it is to avoid lead to because radial force is excessive lead
Shaft vibration and the not brisk negative influence of cutting；This cutting tip using special big spill main cutting edge structure design may be used simultaneously
For right-hand man's cutterhead, there is higher economy.
The upper and lower surface of described cutting tip body 1 forms rake face (i.e. knife before wiper edges rake face 5 and main cutting edge
Face 6) freely to be scanned by grid surface and formed, before the change cutting being formed, angle range is between 6 °～25 °.Particular design becomes
The rake face changed and cutting anterior angle not only can improve point of a knife sharpness and be conducive to reducing cutting resistance, and can improve cutting
Sword bulk strength prevents tipping, is conducive to the curling of chip and minimizing chip to contact reduction frictional heat with rake face simultaneously.
, in addition at main cutting edge rake face 62, remaining position rake face is solid to the clamping of blade body 1 for described rake face 5,6
Determine small boss 10 and freely scan extension, be i.e. the skew lines portion 21 of the main cutting edge of cutting edge and the rake face corresponding to wiper edges 4
Extended to described boss direction with gentle positive-angle, extended surface is formed rapidly at the distance 1/4～1/3 of boss to cutting edge
The cutting anterior angle increasing the oblique stepped section of self-assembling formation, oblique stepped section has the oblique stepped section of main cutting edge rake face 7 and repaiies
The oblique stepped section of light sword rake face 8.Tiltedly the design of stepped section 7 and oblique stepped section 8 can make chip moment leave rake face
Support, reduce the contact heat that brings of friction, be also conducive to chip to fly away from rake face and discharge；Chip can be reduced simultaneously as far as possible
The heat that the friction of the contact with clamping stationary plane small boss 10 brings, and the positioning as far as possible avoiding clamping stationary plane small boss 10
Face friction scratch is thus affect the installation positioning precision of cutting tip.
In described boss, the side corresponding to the oblique stepped section of main cutting edge rake face is set to the anti-bits face of ramp shaped
15；The oblique stepped section 7 of described main cutting edge rake face extends counter with the indent chip pocket of clamping stationary plane small boss 10 considers face 15 to be worth doing
Cave inward formation indent chip pocket 12 jointly, is conducive to chip to fly away from blade body 1 along the anti-face 15 of considering to be worth doing of indent chip pocket；Cutting
Blade main cutting edge rake face 62 is natural to be extended to the clamping fastening through-hole 16 of blade body 1, forms opening chip pocket 11, i.e.
The rake face corresponding to nonangular flat line part 22 of main cutting edge extends for connection to described through hole with gentle positive-angle
16, and form the opening chip pocket 11 leading to described through hole at described boss, opening chip pocket 11 increases chip space, keeps away
Exempt to cut the impact piled up in indent chip pocket 12.
When cutting depth ap is less (ap≤2.5mm), chip is in the oblique stepped section of main cutting edge rake face 7 and main cutting
Sword rake face 6 separates and flies out and leave blade body 1, partly the chip of natural separation cannot hold bits with recessed along after original direction flowing
The anti-face 15 of considering to be worth doing of groove is clashed into, and the anti-bits face of inclined design can be very good for chip guiding to fly away from blade, avoids clamping to fix as far as possible
The locating surface of face small boss 10 rubs scratch thus affecting the installation positioning precision of cutting tip and reducing frictional heat.When cutting is deep
When spending medium (2.5mm ＜ ap≤4.5mm), when main cutting edge rake face 61 and 62 are passed through in chip, break in main cutting edge sloping platform rank
At face 7, the chip portion near wiper edges rake face 5 side for the chip is separated with main cutting edge rake face 6 and contacts, away from wiper edges
The chip portion of rake face 5 side continues to flow along main cutting edge rake face 62, uneven due to support force, is easily to have made
Become to flow freely curling and automatic action detached with blade body 1, make chip be rapidly separated blade body 1.Work as cutting depth
When larger (4.5mm ＜ ap≤6mm), when main cutting edge rake face 61 and 62 are passed through in chip, at the oblique stepped section of main cutting edge 7
The chip portion near wiper edges rake face 5 side for the chip separate with main cutting edge rake face 6 contact, be located at middle part away from repairing
The chip portion of light sword rake face 5 continues to flow along main cutting edge rake face 62, due to the uneven effect of support force, chip pole
Easily pass through opening chip pocket 11 to intermediate recess flowing, and the chip pocket of opening increases chip space, it is to avoid cutting exists
The impact piled up in indent chip pocket 12, adds the anti-comprehensive function considering face 15 to be worth doing of both sides indent chip pocket simultaneously, can make chip certainly
Right flowing curling or self chip breaking effect and the effect flying away from blade body 1.
The above oblique stepped section of main cutting edge rake face 7, opening chip pocket 11, indent chip pocket 12 and indent hold bits
Groove is counter to consider the chip-breaker that face 15 is collectively forming blade body 1 to be worth doing, and main cutting is flow through in the chip that described chip-breaker is formed in machining
During sword rake face 6, there is optimization chip flow curling and carry out from chip breaking processing function, improve tool sharpening performance and stablize
Property.
Described cutting tip is respectively designed with upper and lower surface and is mirrored into symmetrical 4 clamping fixation small boss 10, little convex
Platform 10 is symmetric with the axis of clamping fastening through-hole, and designed boss is used for coordinating clamping with edge bearing locating surface, and 4 do not connect
The positioning boss connecing effectively improves Set and Positioning precision, can be effectively increased effective area of dissipation of blade body simultaneously.
On the fixing small boss 10 of 8 described clampings, medium position is designed with mark or character pit 9, and word pit does not only have
Effect increases effective area of dissipation of blade basal plane；And the fixing small boss 10 of clamping and the contact area of chip can be reduced, drop
Low friction reduces frictional heat；Simultaneously can dischargeable capacity coolant, make coolant be immersed in clamping fastening through-hole 16 around, strengthen
Cooling effect；In addition, word pit can also play the convenience effect that sword number is distinguished, used.
After described cutting tip body 1 and cooperation edge bearing body 18 cooperation, clamping fastening through-hole 16 is passed through by trip bolt
Fix to clamp on supporting cutterhead body 17, described supporting cutterhead body cutting tool cutting edge angle is a (44 °≤a≤46 °)
Above-mentioned simply presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention.Although the present invention
Disclosed above with preferred embodiment, but it is not limited to the present invention.Any those of ordinary skill in the art, are not taking off
In the case of technical solution of the present invention scope, all can be utilized the technology contents of the disclosure above that technical solution of the present invention is made perhaps
How possible variation and modification, or it is revised as equivalents Equivalent embodiments.Therefore, every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should fall
In the range of technical solution of the present invention protection.
Claims (11)
1. a kind of minus milling cutting insert, including blade body；Blade body has upper and lower surface parallel each other, and outer peripheral face
The tetragon being formed, it is right angle that upper and lower surface intersects angulation with outer peripheral face；Blade body is provided with vertically through upper and lower
The through hole on surface, through hole surrounding is uniformly distributed the boss of Set and Positioning, outer peripheral face interaction configuration main cutting edge and smoothing successively
Sword；It is characterized in that: described main cutting edge is concave structure, starts gradually close to upper and lower surface opposing face respectively from its two ends
Tilt, and formed in the middle part of nonangular flat main cutting edge in the part at the 1/6～1/3 of main cutting edge length；Described blade
Rake face in the middle part of the nonangular flat main cutting edge of body extends for connection to described through hole with gentle positive-angle, and
Form the opening chip pocket leading to described through hole at described boss.
2. minus milling cutting insert according to claim 1 it is characterised in that: described main cutting edge be concave structure, by
In both sides and in the skew lines portion of specular be in the nonangular flat line part at middle part and constitute；Described skew lines portion
Outer end is higher than the Set and Positioning face of described boss, and the inner in described skew lines portion is less than the Set and Positioning face of described boss；Described
The nonangular flat line part being in middle part is connected between the skew lines portion on both sides, and the Set and Positioning less than described boss
Face.
3. minus milling cutting insert according to claim 2 it is characterised in that: the corresponding rake face of described main cutting edge is by grid
Curved surface freely scans and is formed, and before the change cutting being formed, angle range is between 6 °～25 °.
4. minus milling cutting insert according to claim 3 it is characterised in that: described main cutting edge nonangular flat straight
Rake face corresponding to line portion extends for connection to described through hole with gentle positive-angle, and formed at described boss lead to described
The opening chip pocket of through hole.
5. minus milling cutting insert according to claim 4 it is characterised in that: the skew lines portion of described main cutting edge and smoothing
Rake face corresponding to sword is extended to described boss direction with gentle positive-angle, and extended surface is in the distance 1/ of boss to cutting edge
Form the cutting anterior angle rapidly increasing the oblique stepped section of self-assembling formation at 4～1/3.
6. minus milling cutting insert according to claim 5 it is characterised in that: the oblique stepped section of described rake face by master cut
Cut the oblique stepped section of sword rake face and the oblique stepped section of wiper edges rake face is constituted；In described boss, before main cutting edge
The side of the oblique stepped section of knife face is set to the anti-bits face of ramp shaped.
7. minus milling cutting insert according to claim 6 it is characterised in that: the oblique stepped section of described main cutting edge rake face
Extend and form, and the anti-bits face of described boss between, the indent chip pocket caving inward.
8. minus milling cutting insert according to claim 7 it is characterised in that: described indent chip pocket and described opening
Chip pocket is connected, and collectively forms the chip-breaker of blade body.
9. minus milling cutting insert according to claim 1 it is characterised in that: the through hole surrounding of described blade body
The small boss of Set and Positioning is uniformly distributed on upper and lower surface, and the small boss on upper and lower surface is in be mirrored into symmetrically；On described,
Four small boss of lower surface are symmetric with the axis of described through hole.
10. minus milling cutting insert according to claim 9 it is characterised in that: on four small boss on described upper and lower surface
It is respectively equipped with word pit.
11. minus milling cutting inserts according to claim 1 it is characterised in that: described main cutting edge is interacted with wiper edges
Configure and be provided with transition arc to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614184.0A CN104439461B (en) | 2014-11-04 | 2014-11-04 | Negative-type milling blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614184.0A CN104439461B (en) | 2014-11-04 | 2014-11-04 | Negative-type milling blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104439461A CN104439461A (en) | 2015-03-25 |
| CN104439461B true CN104439461B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410614184.0A Active CN104439461B (en) | 2014-11-04 | 2014-11-04 | Negative-type milling blade |
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| CN (1) | CN104439461B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3406378A1 (en) * | 2017-05-23 | 2018-11-28 | Walter Ag | Cutting insert and milling tool |
| CN110449649B (en) * | 2019-08-15 | 2021-08-03 | 株洲华锐精密工具股份有限公司 | Variable rake angle milling insert |
| JP7029686B1 (en) * | 2021-02-18 | 2022-03-04 | 株式会社タンガロイ | Cutting tools |
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|---|---|---|---|---|
| CN1032756A (en) * | 1987-10-26 | 1989-05-10 | 桑德维克公司 | Graduatable stock removing cutter |
| CN103492109A (en) * | 2011-04-28 | 2014-01-01 | 京瓷株式会社 | Cutting insert, cutting tool, and method for producing cut producing using same |
| CN204277044U (en) * | 2014-11-04 | 2015-04-22 | 厦门金鹭特种合金有限公司 | Minus milling cutting insert |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100093228A (en) * | 2009-02-16 | 2010-08-25 | 한국야금 주식회사 | Milling cutting tool having a cutting insert |
| JP5092133B2 (en) * | 2009-11-19 | 2012-12-05 | 住友電工ハードメタル株式会社 | Replaceable tip |
| KR101471252B1 (en) * | 2012-09-27 | 2014-12-09 | 대구텍 유한회사 | Blank insert and cutting insert utilizing the same, and cutter |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032756A (en) * | 1987-10-26 | 1989-05-10 | 桑德维克公司 | Graduatable stock removing cutter |
| CN103492109A (en) * | 2011-04-28 | 2014-01-01 | 京瓷株式会社 | Cutting insert, cutting tool, and method for producing cut producing using same |
| CN204277044U (en) * | 2014-11-04 | 2015-04-22 | 厦门金鹭特种合金有限公司 | Minus milling cutting insert |
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| CN104439461A (en) | 2015-03-25 |
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