CN109648125A - A kind of multiple tooth design method that can be realized left and right rotation cutting edge and alternately cut - Google Patents
A kind of multiple tooth design method that can be realized left and right rotation cutting edge and alternately cut Download PDFInfo
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- CN109648125A CN109648125A CN201910075656.2A CN201910075656A CN109648125A CN 109648125 A CN109648125 A CN 109648125A CN 201910075656 A CN201910075656 A CN 201910075656A CN 109648125 A CN109648125 A CN 109648125A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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Abstract
The invention belongs to cutting of hardworking material processing technique fields, it is related to a kind of micro- tooth design method that can be realized left and right rotation cutting edge and alternately cut, this method can be realized the processing method that effective cutting tip of Multi-cutting-edge milling tool right-hand cut sword on different cross section replaces cutting with left-hand cut sword, guarantee continuous action of the CFRP surface fibre by different directions axial force, to realize the purpose for inhibiting high-speed milling carbon fibre composite surface layer burr to generate.By being designed to the micro- tooth of all swords, determines milling cutter construction parameter, guarantee the design method that left-hand cut sword and right-hand cut sword are alternately cut, which can be applied to the milling cutter of different-diameter, helical angle, sword number, and can guarantee designed cutting way.Therefore, which has good universality and engineering application value, and finally high-speed smooth is effectively processed under the achievable big cutting data of carbon fibre composite.
Description
Technical field
The invention belongs to the Machining Technology for Cutting field of composite material material, it is related to one kind and can be realized left and right rotary-cut cutting
The multiple tooth design method that sword is alternately cut, it is equal in arbitrary section which can be realized the effective cutting tip of multitoothed cutter
For the processing method that left and right rotation cutting edge is alternately cut, can effectively solve the problem that in high-speed milling carbon fibre composite up and down
Surface layer leads to the problem of burr, tearing.
Background technique
Composite material has the performance advantages such as specific strength high, light weight and bearing capacity be strong, in development of modern industry
To extensive use.However, composite material belongs to typical difficult-to-machine material, due to the material of its anisotropy and heterogeneity spy
Point causes existing metal milling cutter and match materials poor, especially for upper and lower surface fibre, outside face side not by
Material constraint easily generates burr, tearing equivalent damage under the action of axial force, it is difficult to while guaranteeing adding for upper and lower surface fibre
Work quality requirement, to reduce the military service performance of component.
To solve to generate the problems such as burr and tearing on surface layer in high-rate wireless LAN composite material, need from cutter knot
It is studied in the mode of action of structure and material, so that existing cutter structure is improved and be reformed.In the prior art, pass through
Left-handed and two kinds of rotation directions of dextrorotation cutting edge is designed on milling cutter Zhou Ren, and the left and right rotary-cut of cross-like is realized in milling process
The effect that sword is alternately cut is cut, the generation of surface fibre burr and tearing is able to suppress, such as Patent No. CN201510837529
A kind of square end mill is disclosed, the characteristics of milling cutter is the left and right rotation cutting edge that a plurality of cross-like is designed on milling cutter Zhou Ren,
It is in downward, upward periodically variable axial cutting component that direction is generated in milling process, " shears and imitates as formation scissors
Answer ", such cutting way can effectively avoid the generation of burr and tearing in process.However, this milling cutter has entirety
The cutting edge of formula, the radial direction of whole blade milling cutter and normal direction cutting force are larger in milling process, cause it is lower in milling stability,
Cutting edge abrasion is very fast, and cutter life is difficult to improve.
In addition, a kind of multitoothed cutter is by designing a plurality of left spiral shell and right spiral shell helicla flute in all swords so that formed on Zhou Ren compared with
Intensive small cutting unit can also improve suface processing quality, inhibit processing to realize the cutting effect " mill generation mill "
Layering, burr damage in the process.If Patent No. CN101623778.A discloses a kind of integral carbide goldfish scale milling cutter,
The small cutting unit of the fish scale-shaped of its week sword is made of symmetrical staggered left-hand cut sword and right-hand cut sword, and each cutting is single
The main cutting edge length of member is 0.05mm-1mm, and micro-cutting unit can reduce the cutting width in milling process, thus effectively
Cutting force is reduced, the stability of milling process is improved.However, in prior art research, effective cutting of this kind of multitoothed cutter
Part is not able to achieve the processing method that left-right rotary is alternately cut in any section.If can ensure left and right rotation on multitoothed cutter
The processing method that cutting edge is alternately cut then both is able to achieve the cutting effect " mill generation mill ", reduces milling temperature, raising milling
Efficiency；Also it can guarantee " shearing effect " to surface fibre, inhibit the generation of surface fibre burr, tearing, improve cutter life.
Summary of the invention
The invention solves problem be inhibit high-performance carbon fibre composite material high-speed Milling Process when surface layer generate hair
Thorn and tearing damage, to improve the processing quality and cutter life of carbon fibre composite.It can be real for this purpose, having invented one kind
The multiple tooth design method that existing left and right rotation cutting edge is alternately cut.By determining the structure corresponding relationship between the micro- tooth of milling cutter, thus
Key structural parameters are calculated, are replaced so that multitoothed cutter cutter structure geometrical relationship meets right-hand cut sword with left-hand cut sword
The processing method of cutting, the generation that the processing method of such alternately cutting can effectively inhibit surface layer burr, tear equivalent damage, from
And the processing quality of carbon fibre composite can be effectively improved, and be based on 3 d modeling software, verify the multiple tooth design method
Accuracy, guarantee the big cutting data of carbon fibre composite under high-speed smooth effectively process.
Technical solution of the present invention:
A kind of multiple tooth design method that can be realized left and right rotation cutting edge and alternately cut, by 3 D stereo milling cutter along axial
It is unfolded after splitting, effective cutting tip of selection characterization cutting way is formed with tangential X and axial direction Z
For the micro- tooth Local map of two-dimentional milling cutter of coordinate system, right hand helix slot and left-handed chip dividing groove are staggered to form micro- tooth, micro- tooth
Include right-hand cut sword and left-hand cut sword；Design Milling process, tool geometrical parameter: the tread of right-hand cut sword is g1, it is left
Revolve the groove width g of chip dividing groove2, the helixangleθ of right hand helix slot, the helixangleβ of left-handed chip dividing groove, right hand helix slot slot number Z1, it is left
Revolve the slot number Z of chip dividing groove2With milling cutter diameter D；Other intermediate variables: p is the height of left-hand cut sword；Q is right-hand cut sword
Highly；H is the height and intermediate parameters g between the adjacent two micro- tooth of X-direction；Steps are as follows for specific design method:
Step 1: during guaranteeing continuous cutting, without " cut-in without ball phenomenon ", i.e., same cutting edge is in the adjacent two micro- tooth of Z-direction
Spacing be 0, need to meet；
g2Cos θ=g1cosβ (1)
Step 2: during continuous cutting, realizing that right-hand cut sword replaces cutting with left-hand cut sword, that is, meet dextrorotation and cut
Sword height q is cut equal to left-hand cut sword height p, further equal to the height h, i.e. p=q=between the adjacent two micro- tooth of X-direction
h；
(1) right-hand cut sword height q=h；
Work as Z2>Z1When:
Work as Z2<Z1When:
(2) left-hand cut sword height p=h；
Work as Z2>Z1When:
Work as Z2<Z1When:
Step 3: simultaneous above formula determines Z2With Z1Relationship:
Work as Z2>Z1When:
Work as Z2<Z1When:
Step 4: the Z that will be acquired2It brings above formula into and acquires g2, by g2It brings formula (1) into and finds out g1Value, finally cuts decision
This four parameters for cutting mode import in three-dimensional software model, the accuracy of verification method.
The beneficial effects of the invention are as follows invented one kind to realize that left and right rotation cutting edge is alternately cut on multitooth tool
Multiple tooth design method, in milling carbon fibre composite, surface layer burr and tearing be influence milling CFRP processing quality
How key factor effectively inhibits the generation of burr and tearing to become the hot spot of current research.The multiple tooth design method can expire
Foot is able to achieve left-hand cut sword in any milling cutter section and replaces the processing method cut with right-hand cut sword, and has small cut
Relative stability when unit cutting is cut, cutter life is improved.Therefore, this design method can satisfy to different fiber ranks,
Different-thickness, a variety of ply sequence carbon fibers answer high-quality, the highly-efficient processing demand of material product.
Detailed description of the invention
Fig. 1 is the calculation flow chart of multiple tooth design method；
Fig. 2 is the two-dimentional partial schematic diagram that multiple tooth left and right rotation cutting edge is alternately cut；
Fig. 3 is the two-dimentional cutter of embodiment 1；
Fig. 4 is the two-dimentional cutter of embodiment 2.
In figure: 1 right hand helix slot；2 left-handed chip dividing grooves；3 micro- teeth；4 right-hand cut swords；5 left-hand cut swords；g1Right-hand cut
The tread of sword 4；g2The groove width of left-handed chip dividing groove 2；The helical angle of θ right hand helix slot 1；The helical angle of the left-handed chip dividing groove 2 of β；Z1Dextrorotation
Helicla flute slot number；Z2Left-handed chip dividing groove slot number.D milling cutter diameter；The height of q right-hand cut sword 4；The height of p right-hand cut sword 5；h
Height between the adjacent two micro- tooth 3 of X-direction.
Specific embodiment
With reference to the accompanying drawing and technical solution, the specific embodiment that the present invention will be described in detail.
The present embodiment by go to verify from two kinds of cutter diameters D=10mm and D=6mm micro- tooth design method accuracy and
The reliability of milling tool processing quality.
Embodiment one: milling cutter diameter D=10mm, helixangleθ=15 ° of right hand helix slot 1, left-handed chip dividing groove 2 spiral
Angle beta=35 °, right hand helix slot slot number Z1=12, the tread of right-hand cut sword 4 is g1, the groove width g of left-handed chip dividing groove 22, left-handed point
Consider slot slot number Z to be worth doing2；Steps are as follows for specific design method:
Step 1: during guaranteeing continuous cutting, without " cut-in without ball phenomenon ", i.e. the micro- tooth of same cutting edge neighbouring two
Spacing is 0, needs to meet；
g2Cos15=g1cos35 (1)
Step 2: during continuous cutting, realizing that left-hand cut sword 4 replaces cutting, i.e. p=q=h with right-hand cut sword 5；
(1) 4 height q=h of right-hand cut sword,；
Work as Z2When > 12:
Work as Z2When < 12:
(2) 5 height p=h of left-hand cut sword；
Work as Z2When > 12:
Work as Z2When < 12:
Step 3: simultaneous above formula, it may be determined that go out Z2Value.
Work as Z2When > 12:
Z2=18 (10)
Work as Z2When < 12:
Z2=6 (11)
Step 4: by Z2=18, which bring above formula into, can acquire g2=0.7148mm, g1=0.8428mm, and by the cutter structure
Parameter imports in model, and milling cutter X-Y scheme is as shown in figure 3, meet Z-direction without cut-in without ball and X-direction left-hand cut sword 5 and right-hand cut
The processing method that sword 4 is alternately cut.(Z2=6 obtained parameters, which import in model, makes right hand helix slot 2 too small, the row of being not easy to
Bits, therefore give up).
Embodiment two: milling cutter diameter D=6mm, helixangleθ=15 ° of right hand helix slot 1, left-handed chip dividing groove 2 helical angle
β=35 °, right hand helix slot number Z1=10, the tread of right-hand cut sword 4 is g1, the groove width g of left hand helix slot 22, left-handed chip dividing groove
Slot number Z2；Steps are as follows for specific design method:
Step 1: during guaranteeing continuous cutting, without " cut-in without ball phenomenon ", that is, needing to meet；
g2Cos15=g1cos35 (1)
Step 2: during continuous cutting, realizing that left-hand cut sword 4 replaces cutting with right-hand cut sword 5, that is, meet p=q
=h；
(1) 4 height q=h of right-hand cut sword；
Work as Z2When > 10:
Work as Z2When < 10:
(2) 5 height p=h of left-hand cut sword；
Work as Z2When > 10:
Work as Z2When < 10:
Step 3: simultaneous above formula, it may be determined that Z2Value.
Work as Z2When > 10:
Z2=15 (10)
Work as Z2When < 10:
Z2=5 (11)
Step 4: by Z2=15, which bring above formula into, can acquire g2=0.5146mm, g1=0.6069mm, and by the cutter structure
Parameter imports in model, and milling cutter X-Y scheme is as shown in figure 4, meet Z-direction without cut-in without ball and X-direction left-hand cut sword 5 and right-hand cut
The processing method that sword 4 is alternately cut.(Z2=5 obtained parameters, which import in model, makes right hand helix slot 1 too small, the row of being not easy to
Bits, therefore give up).
A kind of multiple tooth design side that can be realized left and right rotation cutting edge on multitoothed cutter and alternately cut provided by the invention
Method can take into account the geometry of Multi-cutting-edge milling tool complexity, to guarantee that surface fibre is handed over by left-right rotary cutting edge up and down
Milling cutter for the effect of cutting, micro- tooth design method has been verified, and be can be realized and is effectively avoided surface layer burr, tearing damage
The generation of wound.This method calculating is relatively simple, as a result reliably, has good future in engineering applications.
Claims (1)
1. a kind of multiple tooth design method that can be realized left and right rotation cutting edge and alternately cut, 3 D stereo milling cutter is cutd open along axial direction
It is unfolded after opening, effective cutting tip of selection characterization cutting way is formed using tangential X and axial direction Z as the two-dimentional milling cutter of coordinate system
Micro- tooth Local map, right hand helix slot (1) and left-handed chip dividing groove (2) are staggered to form micro- tooth (3), and micro- tooth (3) includes right-hand cut sword
(4) and left-hand cut sword (5)；Design Milling process, tool geometrical parameter: the tread of right-hand cut sword (4) is g1, left-handed point bits
The groove width g of slot (2)2, the helixangleθ of right hand helix slot (1), the helixangleβ of left-handed chip dividing groove (2), right hand helix slot (1) slot
Number Z1, left-handed chip dividing groove (2) slot number Z2With milling cutter diameter D；Other intermediate variables: p is the height of left-hand cut sword (5)；Q is
The height of right-hand cut sword (4)；H is the height and intermediate parameters g between the adjacent two micro- tooth (3) of X-direction；It is characterized in that,
Steps are as follows for specific design method:
Step 1: during guaranteeing continuous cutting, without " cut-in without ball phenomenon ", i.e., same cutting edge is in the adjacent two micro- tooth (3) of Z-direction
Spacing be 0, need to meet；
g2Cos θ=g1cosθ(1)
Step 2: during continuous cutting, realizing that right-hand cut sword (4) replace cutting with left-hand cut sword (5), that is, meet dextrorotation
Cutting edge (4) height q is equal to left-hand cut sword (5) height p, further equal to the height between the adjacent two micro- tooth (3) of X-direction
H, i.e. p=q=h；
(1) right-hand cut sword (4) height q=h；
Work as Z2>Z1When:
Work as Z2<Z1When:
(2) left-hand cut sword (5) height p=h；
Work as Z2>Z1When:
Work as Z2<Z1When:
Step 3: simultaneous above formula determines Z2With Z1Relationship:
Work as Z2>Z1When:
Work as Z2<Z1When:
Step 4: the Z that will be acquired2It brings above formula into and acquires g2, by g2It brings formula (1) into and finds out g1Value, finally decision cutting way
This four parameters import in three-dimensional software models, the accuracy of verification method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910075656.2A CN109648125B (en) | 2019-01-25 | 2019-01-25 | Multi-tooth design method capable of realizing alternate cutting of left-handed cutting edge and right-handed cutting edge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910075656.2A CN109648125B (en) | 2019-01-25 | 2019-01-25 | Multi-tooth design method capable of realizing alternate cutting of left-handed cutting edge and right-handed cutting edge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110052654A (en) * | 2019-04-25 | 2019-07-26 | 厦门鸿鹭联创工具有限公司 | The design method of chip breaking type milling cutter |
| WO2021197863A1 (en) * | 2020-04-02 | 2021-10-07 | Seco Tools Ab | Rotary cutting tool with continuous major flutes and discontinuous minor flutes intersecting to form quadrilateral-shaped face portions |
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| CN109648125B (en) | 2020-06-16 |
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