CN108393521B - A kind of preferred method of carbon fibre composite along upmilling processing method - Google Patents
A kind of preferred method of carbon fibre composite along upmilling processing method Download PDFInfo
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- CN108393521B CN108393521B CN201810100455.9A CN201810100455A CN108393521B CN 108393521 B CN108393521 B CN 108393521B CN 201810100455 A CN201810100455 A CN 201810100455A CN 108393521 B CN108393521 B CN 108393521B
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- 239000000835 fiber Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 20
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 83
- 238000003801 milling Methods 0.000 claims abstract description 57
- 238000012545 processing Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000003754 machining Methods 0.000 claims abstract description 7
- 238000002474 experimental method Methods 0.000 claims abstract description 5
- 238000004364 calculation method Methods 0.000 claims abstract description 3
- 230000003902 lesion Effects 0.000 claims description 15
- 238000004088 simulation Methods 0.000 claims description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/27—Composites, e.g. fibre reinforced composites
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Inorganic Fibers (AREA)
Abstract
A kind of carbon fibre composite of the present invention belongs to field of machining along the preferred method of upmilling processing method, is related to a kind of carbon fibre composite along the preferred method of upmilling processing method.This method solves the actual change range at fiber cutting angle in milling process based on Milling Process parameter respectively, again according to used material properties and cutter structure, the fiber cutting angle range that determination can make processing quality optimal by way of experiment or FEM calculation.The actual range at fiber cutting angle falls in the ratio in optimized scope when finally calculating separately the processing of suitable, upmilling, and the biggish milling mode of selection percentage is as optimal milling mode under the operating condition.Preferred method can provide a kind of new method to realize high-quality, efficient, the high-precision Milling Process of Carbon-fiber Reinforced Plastics Component, realize the optimum choice to milling mode, and calculate step simplicity, there is good future in engineering applications.
Description
Technical field
The invention belongs to field of machining, it is related to a kind of carbon fibre composite along the preferred side of upmilling processing method
Method.
Background technique
Carbon fibre composite compared to traditional metal material, have high specific strength, high ratio modulus, can whole design etc.
Advantage is widely used in the large-scale load-carrying member of field of aerospace Advanced Equipment.These large-scale load-carrying members, generally use
Laying, cured mode are integrally formed, to realize that structural behaviour integrated design manufactures, effectively improve the spirit of performance design
Activity.However in assembly connection link, these components need to meet its accuracy of form and position by Milling Process removal excess stock more
Tolerance.In the process, due to the anisotropy of carbon fibre composite and heterogeneity, easily there is layering, tear
Equivalent damage is split, so that component entirety service performance declines, or even component is caused directly to scrap, hinders carbon fibre composite and exist
Popularization and application process in Advanced Equipment.Therefore, realizing high-quality, efficient, the high-precision milling of Carbon-fiber Reinforced Plastics Component is
The hot and difficult issue of composite processing area research at present.
In general, Milling Process according to cutter rotate incision work speed direction with workpiece direction of feed motion identical or phase
Instead, it is divided into climb cutting processing and upmilling processing.For isotropic material, suitable, upmilling processes the influence master to processing quality
It concentrates in the flutter of workpiece clamp clamp force and process system, milling mode is replaced under same tool and parameter and is difficult for adding
Working medium amount brings essential change.However, for heterogeneous, anisotropic carbon fibre composite, suitable, upmilling processing side
Formula directly affects the variation range at fiber cutting angle, will generate substantial influence to Milling Process quality.Compared to optimization milling
Cutter structure and optimization milling parameter, preferably high-quality and high-efficiency milling of the milling mode for realization Carbon-fiber Reinforced Plastics Component
Processing, more necessity and practicability.Currently, being confined to the research selected for carbon fibre composite milling mode qualitative more
Influence of the milling mode to processing quality is described, specific optimum principle and method are not yet formed.Such as: Prashanth
Janardhan et al. is in " Edge Trimming of CFRP with Diamond Interlocking Tools " text
The influence suitable to carbon fibre composite, upmilling mode is to milling quality has carried out comparative analysis, the results showed that micro- sword is milled
Cutting knife tool upmilling processing quality is processed better than climb cutting, i.e. surface roughness and delamination damage is lower, but the research does not divide deeply
Milling mode is analysed to the substantial influence of processing quality.Therefore, preferably to instruct actual production, it is compound further to promote carbon fiber
The milling quality of material members, the essence that milling quality need to be influenced from carbon fibre composite milling mode, to carbon fiber
The preferred method of dimension composite material milling mode is studied, to promote Carbon-fiber Reinforced Plastics Component answering in Advanced Equipment
Use process.
Summary of the invention
The present invention to overcome the shortcomings of existing technologies, invents a kind of carbon fibre composite along the preferred of upmilling processing method
Method, this method are to realize that carbon fibre composite along the optimum choice of upmilling processing method, is primarily based on Milling Process parameter
Suitable, fiber cutting angle in upmilling process variation range is solved respectively；Secondly according to material therefor and cutter, judge to make
The optimal fiber cutting angle range of processing quality；Again, the practical model in fiber cutting angle in suitable, upmilling process is found out respectively
Enclose the ratio fallen in optimized scope；Finally, the biggish milling mode of selection percentage is as the optimal milling mode of the operating condition.This hair
It is bright to provide fundamental basis for carbon fibre composite along the optimum choice of upmilling processing method, to be advantageously implemented carbon fiber
Tie up high-quality, efficient, the high-precision Milling Process of composite element.
The technical scheme is that a kind of preferred method of carbon fibre composite along upmilling processing method, feature
It is that this method solves the actual change range at fiber cutting angle in milling process based on Milling Process parameter respectively；Again according to institute
The material properties and cutter structure used, the fiber that determination can make processing quality optimal by way of experiment or FEM calculation
Cutting angle range；The actual range at fiber cutting angle falls in the ratio in optimized scope when finally calculating separately the processing of suitable, upmilling
Example, the biggish milling mode of selection percentage is as optimal milling mode under the operating condition；Specific step is as follows for method:
Step 1: solving suitable, fiber cutting angle in upmilling process actual range respectively；
In Milling Processes, cutter persistently turns round while feed motion, so that actual fiber cutting angle
Persistently change in a certain range, size is codetermined by the rotation angle of workpiece fiber angles and cutter cutter tooth.Define fiber
The angle that cutting angle ψ is turned over when until being overlapped with machine direction by instantaneous cutting velocity direction through rotation counterclockwise, workpiece are fine
The angle that dimension angle, θ is turned over when until being overlapped with machine direction by feed speed direction through rotation counterclockwise, pirouette angleFor the angle passed through when being rotated in the counterclockwise direction from vertical line to instantaneous cutting point.
1) it when upmilling is processed, by geometrical relationship, obtains:
Wherein, pirouette angleVariation range be 0 ° extremelyAndBy milling process parameter radial direction cutting-in aeAnd institute
It is determined with milling cutter diameter D, it may be assumed that
Convolution (1-2) obtains the variation range at fiber cutting angle in upmilling processing are as follows:
2) it for climb cutting process, is apparent from according to definition before this, fiber cutting angle ψDWith upmilling under identical machining condition
Fiber cutting angle ψ in the processUAt each instantaneous all supplementary angles each other, that is, meet:
ψD=180- ψU (4)
Convolution (1-4) obtains the variation range at fiber cutting angle in climb cutting processing are as follows:
Step 2: determining the optimized scope at fiber cutting angle according to material properties and cutter structure
This step can pass through finite element numerical according to the attribute of used tool geometrical parameter and carbon fibre composite
Simulation is tested by simplified orthogonal cutting, obtains lesion depths with the changing rule of fiber cutting angle, therefrom choosing makes
The lesser fiber cutting angle range of lesion depths is obtained as optimal fiber and cuts angular region.Specific method is referring to embodiment.
It is fallen in optimized scope step 3: solving suitable, fiber cutting angle in upmilling process actual range respectively
Ratio, and select optimal milling mode of the big milling mode of ratio as the station
If it is l that the actual range at upmilling processing fiber cutting angle, which falls in the siding-to-siding block length in optimized scope,U, climb cutting processing fibre
It is l that the actual range at dimension cutting angle, which falls in the siding-to-siding block length in optimized scope,DIt is cut to get fiber in suitable, upmilling process
The ratio that the actual range at angle is fallen in optimized scope is respectively as follows:
If there is εU< εD, then climb cutting is selected；Conversely, then selecting upmilling；When the two is equal, then according to the variation in second step
Rule, selection can make the lesser milling mode of lesion depths value.
The beneficial effects of the invention are as follows there are essential distinctions for processing quality when processing carbon fibre composite for suitable, upmilling
The problem of, preferred method is processed from the thin sight removal process of milling, upmilling mode suitable out according to Milling Process parametric solution
When fiber cutting angle actual change range, and compared with optimized scope, realize the optimum choice to milling mode accordingly,
With avoid because milling mode select it is improper due to caused by the serious problem of machining damage.The present invention can be compound for realization carbon fiber
High-quality, efficient, the high-precision Milling Process of material members provide a kind of new method, and calculate step simplicity, there is good engineering
Application prospect.
Detailed description of the invention
Fig. 1 is cutting-in when being 20 μm, under different cutting speeds lesion depths with fiber angles variation diagram.Fig. 2 is cutting-in
When being 40 μm, under different cutting speeds lesion depths with fiber angles variation diagram.Fig. 3 is cutting-in when being 60 μm, difference cutting
Under speed lesion depths with fiber angles variation diagram.Wherein abscissa indicates fiber cutting angle, and unit is " degree "；Ordinate table
Show that lesion depths, unit are " μm "；V is cutting speed (m/s), and 1- is the lesion depths of cutting speed v=0.05 (m/s) with fibre
The variation diagram of angle is tieed up, 2- is the lesion depths of cutting speed v=0.5 (m/s) with the variation diagram of fiber angles, and 3- is cutting speed
The lesion depths of v=1.5 (m/s) are spent with the variation diagram of fiber angles.
Fig. 4 is suitable, processing quality under upmilling processing method effect contrast figure in embodiment.Wherein the upper long side of workpiece by
Climb cutting completes the process, and the lower long side of workpiece is completed the process by upmilling.
Specific embodiment
Below in conjunction with attached drawing and technical solution, the specific implementation that the present invention will be described in detail.
The present embodiment selects the double straight sword milling cutters of hard alloy that anterior angle is 5 °, relief angle is 10 °, blunt round radius is 15 μm, right
The milling mode for the T800 grade carbon fiber Unidirectional Composites that fiber angles are 150 ° carries out preferably, machined parameters such as table 1:
1 Milling Process parameter of table
Step 1: solving suitable, fiber cutting angle in upmilling process actual range respectively
By the machined parameters in table 1, obtain:
Meet:Then upmilling processing in fiber cutting angle actual range are as follows:
The range at fiber cutting angle in its corresponding climb cutting processing are as follows:
ψD=180 ° of-ψU∈[30°,66.87°]
Step 2: determining the optimized scope at fiber cutting angle according to material properties and cutter structure
The present embodiment is by the way of orthogonal cutting, to identical material under the shear action of the cutter of identical geometry
The lesion depths of generation are observed with the variation of fiber cutting angle, experiment parameter such as table 2.
2 orthogonal cutting experiment parameter table of table
The workpiece after processing is observed using scanning electron microscope, records each fiber cutting angle, each cutting
As a result machining damage depth value under speed, each cutting-in summarizes for Fig. 1-Fig. 3.By Fig. 1, Fig. 2, Fig. 3 it is found that different cutting-in, cutting
It is similar with the changing rule at fiber cutting angle to cut machining damage depth under speed, i.e., so that the lesser fiber cutting angle of lesion depths
Optimized scope are as follows:
ψIt is excellent∈ [150 °, 180 °] ∪ [0 °, 60 °]
It is fallen in optimized scope step 3: solving suitable, fiber cutting angle in upmilling process actual range respectively
Ratio, and select optimal milling mode of the big milling mode of ratio as the station
The ratio that suitable, fiber cutting angle in upmilling processing actual range is fallen in optimized scope is respectively as follows:
Due to εU< εD, select the mode of climb cutting to be processed in the present embodiment, actual suitable, upmilling processing effect comparison
As shown in Figure 4.Fig. 4 is suitable, processing quality under upmilling processing method effect contrast figure in embodiment.Wherein, the upper length of workpiece
While being completed the process by climb cutting, the lower long side of workpiece is completed the process by upmilling.
Claims (1)
1. a kind of carbon fibre composite is along the preferred method of upmilling processing method, characterized in that this method is based on Milling Process
Parameter solves the actual change range at fiber cutting angle in milling process respectively；Again according to used material properties and cutter knot
Structure, the fiber cutting angle range that determination can make processing quality optimal by way of experiment or FEM calculation；Finally distinguish
The actual range at fiber cutting angle falls in the ratio in optimized scope, the biggish milling of selection percentage when calculating the processing of suitable, upmilling
Mode is as optimal milling mode under the operating condition；Specific step is as follows for method:
Step 1: solving suitable, fiber cutting angle in upmilling process actual range respectively
In Milling Processes, cutter persistently turns round while feed motion, so that actual fiber cutting angle is one
Determine persistently to change in range, size is codetermined by the rotation angle of workpiece fiber angles and cutter cutter tooth；Define fiber cutting
The angle that angle ψ is turned over when until being overlapped with machine direction by instantaneous cutting velocity direction through rotation counterclockwise, workpiece fiber angle
The angle that degree θ is turned over when until being overlapped with machine direction by feed speed direction through rotation counterclockwise, pirouette angleFor
The angle passed through when being rotated in the counterclockwise direction from vertical line to instantaneous cutting point；
1) it when upmilling is processed, by geometrical relationship, obtains:
Wherein, pirouette angleVariation range be 0 ° extremelyAndBy milling process parameter radial direction cutting-in aeWith milling used
Knife diameter D is determined, it may be assumed that
Convolution (1-2) obtains the variation range at fiber cutting angle in upmilling processing are as follows:
2) it for climb cutting process, is apparent from according to definition before this, fiber cutting angle ψDDuring upmilling under identical machining condition
Fiber cutting angle ψUAt each instantaneous all supplementary angles each other, that is, meet:
ψD=180- ψU (4)
In conjunction with formula (1-4), the variation range at fiber cutting angle in climb cutting processing is obtained are as follows:
Step 2: determining the optimized scope at fiber cutting angle according to material properties and cutter structure
According to the attribute of used tool geometrical parameter and carbon fibre composite, by finite element numerical simulation or pass through letter
The orthogonal cutting of change is tested, and obtains lesion depths with the changing rule of fiber cutting angle, therefrom choose so that lesion depths compared with
Small fiber cutting angle range cuts angular region as optimal fiber；
Step 3: the ratio that suitable, fiber cutting angle in upmilling process actual range is fallen in optimized scope is solved respectively,
And select optimal milling mode of the big milling mode of ratio as the station
If it is l that the actual range at upmilling processing fiber cutting angle, which falls in the siding-to-siding block length in optimized scope,U, climb cutting processing fiber cut
It is l that the actual range of top rake, which falls in the siding-to-siding block length in optimized scope,DTo get suitable, fiber cutting angle in upmilling process
The ratio that actual range is fallen in optimized scope is respectively as follows:
If there is εU< εD, then climb cutting is selected；Conversely, then selecting upmilling；When the two is equal, then according to the changing rule in second step,
Selection can make the lesser milling mode of lesion depths value.
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| CN109773895B (en) * | 2019-03-05 | 2023-06-16 | 南京林业大学 | Efficient milling device for preventing edge collapse of facing chipboard and processing method thereof |
| CN114309817B (en) * | 2022-03-03 | 2022-10-28 | 成都航天精诚科技有限公司 | Manufacturing and detecting method of high-precision large-specification strip-shaped workpiece |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101658951A (en) * | 2009-09-10 | 2010-03-03 | 西安飞机工业（集团）有限责任公司 | Numerical control milling processing method of stud in laminated composite part |
| WO2015163408A1 (en) * | 2014-04-24 | 2015-10-29 | 帝人株式会社 | Machined carbon-fiber-reinforced resin product having end face and production method therefor |
| CN106312156A (en) * | 2016-11-16 | 2017-01-11 | 西南交通大学 | Cutting angle acquiring method for restraining milling burr of carbon fiber laminate |
| CN106934172A (en) * | 2017-03-24 | 2017-07-07 | 大连理工大学 | A kind of multiple-cutting-edge milling clearance computational methods of carbon fibre composite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10272504B2 (en) * | 2016-02-02 | 2019-04-30 | Sandvik Intellectual Property | Tool with right-hand and left-hand cutting features extending along the full length of the cutting zone |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101658951A (en) * | 2009-09-10 | 2010-03-03 | 西安飞机工业（集团）有限责任公司 | Numerical control milling processing method of stud in laminated composite part |
| WO2015163408A1 (en) * | 2014-04-24 | 2015-10-29 | 帝人株式会社 | Machined carbon-fiber-reinforced resin product having end face and production method therefor |
| CN106312156A (en) * | 2016-11-16 | 2017-01-11 | 西南交通大学 | Cutting angle acquiring method for restraining milling burr of carbon fiber laminate |
| CN106934172A (en) * | 2017-03-24 | 2017-07-07 | 大连理工大学 | A kind of multiple-cutting-edge milling clearance computational methods of carbon fibre composite |
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