CN109773660A - A kind of polymer matrix composite slab abrasive water-jet method for fine finishing - Google Patents
A kind of polymer matrix composite slab abrasive water-jet method for fine finishing Download PDFInfo
- Publication number
- CN109773660A CN109773660A CN201910143638.3A CN201910143638A CN109773660A CN 109773660 A CN109773660 A CN 109773660A CN 201910143638 A CN201910143638 A CN 201910143638A CN 109773660 A CN109773660 A CN 109773660A
- Authority
- CN
- China
- Prior art keywords
- processing
- cut
- accuracy
- machining
- jet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a kind of abrasive water-jet method for fine finishing of polymer matrix composite slab, comprising the following steps: selects processing scheme according to the processing method for the first time of workpiece to be processed；Processing scheme is selected according to the kerf of workpiece to be processed.The present invention carries out one or many processing along same track after single cutting off processing, or carries out the processing for being parallel to former track after the vertical line direction Fine Feed in former orbit tangent direction, and compared with single cutting off processing, processing quality is more excellent.This method and combinations thereof can not only improve abrasive waterjet cutting size and the accuracy of form and position under the premise of ensuring processing efficiency, and the inherent shortcomings such as kerf taper brought by conventional abrasives water jet machining method, the higher surface roughness in slot side striate region and slot side bottom can be removed, realize the top-down consistency of machined surface roughness.Aperture, turnery processing and the forming to convex surface can be further applied, and the following process that can be used as other processing methods further increases precision, eliminate defect.
Description
Technical field
Cutting and venting techniques the present invention relates to abrasive water-jet to various types of materials, especially a kind of polymer matrix are compound
The abrasive water-jet method for fine finishing of material thick plate.
Background technique
Currently, common abrasive waterjet cutting increased quality method includes to abrasive water-jet towards different workpieces item
The optimization of each technological parameter, cutting head concussion technology and multiple feed processing technology when part.But for thickness 10mm's or more
Material, due to the unique generation type of abrasive water-jet, fluidic architecture and processing mechanism, workpiece still can in by its process
Form more coarse undercut quality, be embodied as slot side striate region, kerf taper and slot side bottom compared with
Big surface roughness.According to the cutting power of current commercial abrasive water jet flow device, bottom defect is difficult to avoid that, and becoming should
A kind of intrinsic deficiency of processing method.The abrasive waterjet cutting precision and surface quality for how improving slab material, are abrasive waters
Jet stream processes one of problem urgently to be resolved.
Summary of the invention
To solve the above problems existing in the prior art, the present invention will design a kind of suitable slab material, especially polymerize
The abrasive water-jet method for fine finishing of object based composites slab, can not only improve abrasive material under the premise of ensuring processing efficiency
Water jet machining size and the accuracy of form and position, and can to kerf taper brought by conventional abrasives water jet machining method, cut
Mouth side wall striate region and the higher surface roughness in slot side bottom etc. inherent shortcomings are removed, to form high quality
Finished surface；Aperture, turnery processing and the forming to convex surface can be further applied, and can be used as other processing methods
Following process to further increase precision, eliminate defect.
To achieve the goals above, technical scheme is as follows: a kind of polymer matrix composite slab abrasive water
Jet stream method for fine finishing, comprising the following steps:
A, processing scheme is selected according to the processing method for the first time of workpiece to be processed
If workpiece to be processed is processed for the first time using abrasive waterjet cutting, B is gone to step；Otherwise, C is gone to step；
B, processing scheme is selected according to the kerf of workpiece to be processed
If having requirement on machining accuracy to notch two sides simultaneously, i.e. processing need to retain notch two sides simultaneously, then go to step B1；
If only having requirement on machining accuracy to unilateral notch, that is, processing only needs to retain a lateral incision, and another lateral incision is as extra material
Material does not make processing request, then goes to step B2；
B1, Double-Notched processing
B11, reserved allowance for finish
Reserved allowance for finish is required according to the material property of workpiece, size and the accuracy of form and position；Determine notch machining locus；
Wherein, allowance for finish calculation formula is reserved are as follows:
Then actual processing size are as follows:
In formula:
γIt is reservedIt is respectively to predict single process half notch top width and practical single process half notch with γ
Top width；
εJ is reservedAnd εjThe respectively prediction jth time fine cut processing amount of feeding is along the vertical line side of upper one of machining locus tangential direction
Point of upward component and practical jth time fine cut processing amount of feeding together with upper on the vertical line direction of machining locus tangential direction
Amount, j ∈ [1 ,+∞)；εj∈ [0,2r), r is jet radius, εjAlong the vertical line direction of upper one of machining locus tangential direction when=0
Without the amount of feeding, it is considered as and is processed without fine cut；M be fine cut processing times, m ∈ [1 ,+∞)；
WithRespectively predict that i-th group of light cuts processing to i-th group of the removal amount of material top plane and reality
Light cuts processing to the removal amount of material top plane；xiThe continuous light of processing, which is cut, for i-th group of light cuts processing times, xi∈[0,+∞)；N is
Light cuts processing group number, n ∈ [1 ,+∞)；
ΔIt is reservedWith accumulated error amount during accumulated error amount in Δ respectively prediction process and actual processing；
B12, roughing
According to determining machining locus with k0v0Feed speed carry out abrasive waterjet cutting, processing top width is 2 γ
Double-Notched；k0≥1；v0To carry out same parameter processing in a manner of conventional machining, processing quality reaches conventional machining mode prescribed limit
Interior highest feed speed；v0≤vSeparation, k0v0≤vSeparation；vSeparationTo cut off material and not generating the maximum speed of lamination defect；
B13, light cut processing
Along original processing track with k2v0Feed speed carry out abrasive water jet streamer cut processing, i.e., along former track carry out nothing into
To processing；k2≥1；
B14, processing method selection
Processing method is selected, if cut precision reaches regulation machining accuracy or continues without feeding processing
Without extra material to be removed, processing stops, at this time notch top widthOtherwise, step B13 is turned to；
B2, the processing of unilateral notch
B21, reserved allowance for finish
Reserved allowance for finish is required according to the material property of workpiece, size and the accuracy of form and position；Determine notch machining locus；
Wherein, allowance for finish calculation formula is reserved are as follows:
Then actual processing size are as follows:
B22, roughing
According to determining machining locus with k0v0Feed speed carry out abrasive waterjet cutting, after processing Double-Notched
Retaining notch has requirement on machining accuracy side in original position；
B23, processing method selection
Processing method is selected, if in terms of dimensional accuracyOr the accuracy of form and position and table
Face quality can not turn to step B24 by reaching prescribed requirement without feeding processing；Otherwise, step B26 is turned to；
B24, fine cut processing
Abrasive water-jet fine cut processing is carried out to workpiece, that is, is carrying out the depth of cut one of machining locus along abrasive water-jet
After component on the vertical line direction of tangential direction is no more than the feed of one times of jet diameter, with k1v0Feed speed carry out along mill
The processing of one of machining locus parallel direction before material water jet；k1≥1；
B25, processing method selection
Processing method is selected, if cut precision reaches regulation machining accuracy, processing stops；Otherwise, step is turned to
Rapid B26；
B26, light cut processing
Abrasive water jet streamer is carried out along upper one of machining locus and cuts processing, i.e., along upper one of machining locus with k2v0Feeding
Speed process without feeding.
B27, processing method selection
Processing method is selected, if notch machining accuracy reaches prescribed requirement, processing stops；If cut precision
Not up to prescribed requirement, according to part process situation carry out step selection: if continue without feeding processing still have it is extra to
Material is removed, i.e., meets following formula in terms of dimensional accuracy:
Or the accuracy of form and position and surface quality do not reach prescribed requirement, turn to step B26；If workpiece reaches the regulation accuracy of form and position
Or continue without feeding processing without extra material to be removed, and dimensional accuracy has not yet been reached, i.e., it is full in terms of dimensional accuracy
Foot formula:
Or the workpiece accuracy of form and position and surface quality can not turn to step B24 by reaching prescribed requirement without feeding processing；
In formula, x is to have carried out fine cut number, x >=1；Y is to have carried out light to cut a group number, y >=1；
C, the following process of other processing methods
C1, reserved allowance for finish
Reserved allowance for finish is required according to the material property of workpiece, size and the accuracy of form and position；Determine notch machining locus；
Wherein, allowance for finish calculation is reserved are as follows:
Then actual processing size are as follows:
C2, roughing
According to machining mode or other special process modes, unilateral or Double-Notched is processed；
C3, fine cut processing
The abrasive water-jet fine cut processing of carry out on one side to there is requirement on machining accuracy is carrying out the depth of cut along original processing side
After component in the vertical direction of boundary's tangential direction is no more than the feed of one times of jet diameter；With k1v0Feed speed carry out edge
The processing of original processing boundary parallel direction；
C4, processing method selection
Processing method is selected, if cut precision reaches regulation machining accuracy, processing stops；Otherwise, step is turned to
Rapid C5；
C5, light cut processing
Abrasive water jet streamer is carried out along upper one of machining locus and cuts processing, i.e., with k2v0Feed speed along it is upper together process
Track process without feeding.
C6, processing method selection
Processing method is selected, if notch machining accuracy reaches prescribed requirement, processing stops；If cut precision
Not up to prescribed requirement is processed situation according to part and is selected: if continuing still to have without feeding processing extra to be removed
Material meets following formula in terms of dimensional accuracy:
Or the accuracy of form and position and surface quality do not reach prescribed requirement, turn to step C5；If workpiece reaches the regulation accuracy of form and position
Or continue without feeding processing without extra material to be removed, and dimensional accuracy has not yet been reached, i.e., it is full in terms of dimensional accuracy
Foot formula:
Or the workpiece accuracy of form and position and surface quality can not turn to step C3 by reaching prescribed requirement without feeding processing；
X is to have carried out fine cut number, x >=1；Y is to have carried out light to cut a group number, y >=1.
Compared with prior art, the invention has the following advantages:
The present invention carries out one or many along the processing of same track and along former orbit tangent direction after single cutting off processing
Vertical line direction Fine Feed after carry out the processing for being parallel to former track, compared with single cutting off processing, processing quality is more excellent.The stream
Journey can not only improve abrasive waterjet cutting size and the accuracy of form and position under the premise of ensuring processing efficiency, but also can be to biography
Kerf taper brought by abrasive waterjet cutting method of uniting, the higher surface in slot side striate region and slot side bottom are thick
The inherent shortcomings such as rugosity are removed, and realize the top-down consistency of finished surface surface roughness.It can further apply
Aperture, turnery processing and the forming to convex surface, and can be used as the following process of other processing methods to further increase
Precision eliminates defect.
Detailed description of the invention
Fig. 1 is application schematic diagram of the abrasive water-jet method for fine finishing in cutting processing.
Fig. 2 is application schematic diagram of the abrasive water-jet method for fine finishing in aperture processing.
Fig. 3 is application schematic diagram of the abrasive water-jet method for fine finishing in turnery processing.
Fig. 4 is application schematic diagram of the abrasive water-jet method for fine finishing in convex surface forming.
Fig. 5 is abrasive water-jet allowance for finish reservation mode schematic diagram.
Fig. 6 is abrasive water-jet single cutting off processing schematic diagram.
Fig. 7 is the pattern schematic diagram after abrasive water-jet single cutting off processing.
Fig. 8 is that abrasive water jet streamer cuts machining sketch chart (to bilateral).
Fig. 9 is that abrasive water jet streamer cuts the pattern schematic diagram (Double-Notched) after processing.
Figure 10 is that the multiple light of abrasive water-jet cuts machining sketch chart (to bilateral).
Figure 11 is that the multiple light of abrasive water-jet cuts the pattern schematic diagram (Double-Notched) after processing.
Figure 12 is abrasive water-jet single cutting off processing schematic diagram.
Figure 13 is the pattern schematic diagram after abrasive water-jet single cutting off processing.
Figure 14 is that abrasive water jet streamer cuts machining sketch chart (to unilateral).
Figure 15 is that abrasive water jet streamer cuts the pattern schematic diagram (unilateral notch) after processing.
Figure 16 is that the multiple light of abrasive water-jet cuts machining sketch chart (to unilateral).
Figure 17 is that the multiple light of abrasive water-jet cuts the pattern schematic diagram (unilateral notch) after processing.
Figure 18 is abrasive water-jet single cutting off processing schematic diagram.
Figure 19 is the pattern schematic diagram after abrasive water-jet single cutting off processing.
Figure 20 is abrasive water-jet fine cut machining sketch chart.
Figure 21 is the pattern schematic diagram after abrasive water-jet fine cut processing.
Figure 22 is that cooperation progress light cuts machining sketch chart after abrasive water-jet fine cut is processed.
Figure 23 is that cooperation progress light cuts the pattern schematic diagram after processing after abrasive water-jet fine cut is processed.
Figure 24 is traditional processing or other processing method machining sketch charts.
Figure 25 is the pattern schematic diagram after traditional processing or the processing of other processing methods.
Figure 26 is abrasive water-jet fine cut machining sketch chart.
Figure 27 is the pattern schematic diagram after abrasive water-jet fine cut processing.
Figure 28 is that cooperation progress light cuts machining sketch chart after abrasive water-jet fine cut is processed.
Figure 29 is that cooperation progress light cuts the pattern schematic diagram after processing after abrasive water-jet fine cut is processed.
Figure 30 is polymer matrix composite slab abrasive water-jet method for fine finishing flow chart.
In figure: 1, abrasive water-jet, 2, workpiece, 3, abrasive waterjet cutting nozzle.
Specific embodiment
The present invention is further described below in conjunction with attached drawing.D is 1 diameter of abrasive water-jet in figure.
A kind of polymer matrix composite slab abrasive water-jet method for fine finishing is listed respectively in figures 1-4 to cut
It cuts, aperture, turning and to the applicable cases under several different processing scenes of the forming of convex surface, processing method is detailed in figure
30, specific processing and implementation mode is as follows:
Method carries out step B11 and reserves allowance for finish as shown in Figure 5, and actual processing sequence and each processing method are to size
The influence of precision but can should ensure that notch machining accuracy is finally reached prescribed requirement with reserved difference, i.e., | ∑-∑It is reserved| in ruler
In the very little margin of tolerance and the accuracy of form and position and surface quality reach prescribed requirement.
In Fig. 6-11, workpiece 2 carries out step B12 mill according to predetermined machining locus after step B11 reserves machining allowance
Water jet machining is expected to cut off to workpiece 2, and the rear step B13 abrasive water jet streamer that carries out cuts processing, and can foundation behind
Step B14 processing method selection result decides whether that supplement carries out step B13 abrasive water jet streamer and cuts processing (multiple).
In Figure 12-17, workpiece 2 carries out step B22 mill according to predetermined machining locus after step B21 reserves machining allowance
Water jet machining is expected to cut off to workpiece 2, and rear foundation step B23 processing method selection result decides whether to carry out step
B26 abrasive water jet streamer cuts processing, and can decide whether to supplement according to step B27 processing method selection result after step B26
It carries out step B26 abrasive water jet streamer and cuts processing (multiple).
In Figure 18-23, workpiece 2 carries out step B22 mill according to predetermined machining locus after step B21 reserves machining allowance
Water jet machining is expected to cut off to workpiece 2, and rear foundation step B23 processing method selection result decides whether to carry out step
B24 abrasive water-jet fine cut processing can decide whether that supplement carries out step according to step B25 processing method selection result later
B26 abrasive water jet streamer is cut processing (multiple), and can be continued behind according to the determination of step B27 processing method selection result
Step B24- step B26 processing combination or processing stop.
Or as shown in figure 30, machining allowance is reserved in step B21 and carry out step B22 abrasive water according to predetermined machining locus
After jet stream processing is to cut off workpiece 2, add according to actual processing scene independent assortment step B24 and step B26 to notch
Work precision reaches prescribed requirement, i.e., | ∑-∑It is reserved| in dimensional tolerance range and the accuracy of form and position and surface quality reach regulation and want
It asks, processing stops.
In Figure 24-29, it is mechanical that workpiece 2 carries out step C2 according to predetermined machining locus after step C1 reserves machining allowance
Processing or other special process modes are rear to carry out step C3 abrasive water-jet fine cut processing, Zhi Houke to cut off to workpiece 2
Decide whether that supplement carries out step C5 abrasive water jet streamer and cuts processing (multiple) according to step C4 processing method selection result, and can
Determine that continuing step C3- step C5 processing combination or processing stops according to step C6 processing method selection result behind
Only.
Or as shown in figure 30, machining allowance is reserved in step C1 in workpiece 2 and carry out step C2 according to predetermined machining locus
Machining or other special process modes to be cut off to workpiece 2 after, according to actual processing scene be freely combined step C3
Reach prescribed requirement with step C5 to notch machining accuracy, i.e., | ∑-∑It is reserved| in dimensional tolerance range and the accuracy of form and position and table
Face quality reaches prescribed requirement, and processing stops；
The present invention is further described in conjunction with specific embodiments.
Aramid fiber refers to industrialized production and widely applied aramid fibre, external product name Kevlar
It (Kevlar), is a kind of organic fiber with enough rigidity and intensity.Aramid fiber is small with its density, and elasticity modulus is high,
Tensile strength is high, and impact property is good, good thermal stability, the advantages such as good medium-resistance be widely used in it is shellproof and
The structures such as the radome fairing that aerospace field needs shock resistance to damage.But its good mechanical property, which also becomes, carries out machinery to it
The serious obstruction of processing, therefore abrasive waterjet cutting is considered as a kind of feasible method of cutting aramid fiber compound,
And fiber can be made the amount of disseminating is minimum in air.
During processing 50mm big thickness aramid fiber reinforced composite, aramid fiber reinforced composite workpiece 2 is in step B11
According to predetermined machining locus after reserved machining allowance, with 390MPa pressure, 600g/min abrasive material flow, the feeding speed of 40mm/min
(for specific machined parameters depending on material property, selected feed speed, which should be lower than, so that material is cut for degree and the machined parameters of 2mm range
Maximum speed that is disconnected and not generating lamination defect) step B12 abrasive waterjet cutting is carried out to aramid fiber reinforced composite work
Part 2 is vertically cut off, after carry out step B13 abrasive water jet streamer with identical parameters and cut processing, and according to the processing side step B14
Formula selection result respectively carries out two identical workpiece supplements 0 time, and 1 time step B13 abrasive water jet streamer cuts processing.
Step B12 is carried out with the feed speed of 40mm/min and 20mm/min (remaining parameter is identical) respectively to identical material
Abrasive waterjet cutting processes plane as a comparison to cut off to aramid fiber reinforced composite workpiece 2, with it.
Under using the average value of the same working depth different location measurement of Taylor's surface profiler three times as the working depth
Surface roughness (unit: μm), and by five equal part of work pieces process thickness, with rough surface at 4/5ths thickness from top to down
Spend Ra4/5With surface roughness Ra at 1/5th thickness1/5Judge mark of the difference Δ Ra as machined surface roughness consistency
Standard (Δ Ra=Ra4/5-Ra1/5)；Can make most short process time t of material cutting as the unit time to measure processing efficiency,
The processing used time is T every time；Using the angle of three-coordinates measuring machine measurement gained processing plane and top interplanar as kerf taper
Judgment criteria；Then above five times it is as follows to the processing quality of big thickness aramid fiber reinforced composite and efficiency comparative:
1 abrasive water-jet single cutting off processing of table and light cut processing processing quality and efficiency comparative's table
| Ra1/5 | Ra2/5 | Ra3/5 | Ra4/5 | ΔRa | θ | T | |
| 40mm/min cutting | 6.4258 | 7.5809 | 9.9593 | 11.9032 | 5.4774 | - | t |
| 20mm/min cutting | 6.0131 | 7.1635 | 9.7687 | 11.7308 | 5.7177 | 58′16″ | 2t |
| Same parameter light is cut 1 time after 40mm/min cutting | 5.7300 | 6.4050 | 5.9704 | 6.5839 | 0.8538 | 5′58″ | 2t |
| Same parameter light is cut 2 times after 40mm/min cutting | 5.1150 | 5.3787 | 5.9297 | 6.2213 | 1.1063 | -1′47″ | 3t |
Aramid fiber reinforced composite workpiece 2 step B21 reserve machining allowance after according to predetermined machining locus, with 390MPa
Pressure, 600g/min abrasive material flow, the feed speed of 40mm/min and machined parameters (the specific machined parameters view material of 2mm range
Depending on expecting performance, selected feed speed should be lower than the maximum speed that material can be made to cut off) carry out step B22 abrasive waterjet cutting
It is rear to determine to carry out step B24 abrasive water-jet according to step B23 processing method selection result vertically to be cut off to workpiece 2
Fine cut processing, amount of feeding 0.1mm.2 abrasive water-jet single cutting off processing of table, light are cut and machined surface quality and effect are processed in fine cut
Rate contrast table
| Ra1/5 | Ra2/5 | ΔRa(2/5-1/5) | Ra3/5 | ΔRa(3/5-1/5) | Ra4/5 | ΔRa | T | |
| 40mm/min cutting | 6.4258 | 7.5809 | 1.1551 | 9.9593 | 3.5335 | 11.9032 | 5.4774 | t |
| 20mm/min cutting | 6.0131 | 7.1635 | 1.1504 | 9.7687 | 3.7556 | 11.7308 | 5.7177 | 2t |
| Same parameter light is cut 1 time after 40mm/min cutting | 5.7300 | 6.4050 | 0.6750 | 5.9704 | 0.2403 | 6.5839 | 0.8538 | 2t |
| Same parameter fine cut is processed after 40mm/min cutting | 5.0105 | 5.0341 | 0.0236 | 5.2783 | 0.2678 | 7.0454 | 2.0349 | 2t |
From above-described embodiment as it can be seen that carrying out abrasive water jet streamer in the case where single process cutting cuts processing, i.e., along mill
Material water jet 1 on one of machining locus continue without feeding processing can be to the single cut process removed in big surplus
In, due to big thickness material constantly the energy of abrasive water-jet 1 is consumed and the more coarse undercut matter that is formed
Amount is promoted.There is no the lot of materials for needing to remove when single process consumption jet energy, jet stream is without feeding process
In can remove easily and fail the part processed completely during single process, more fully processing can effectively remove notch
Sidewall bottom striate region, the manufacturing deficiencies such as higher surface roughness of kerf taper and slot side bottom, to realize to light
Effective extension of sliding cutting area depth.And do not have after processing without feeding process itself since there is no the beats backward of jet stream
There is new bottom striate region defect to generate, enables target surface to be processed into the abrasive water-jet with high manufacturing accuracy and add
The closely not damaged surface of work.
Abrasive water-jet fine cut processing is carried out in the case where single process cutting, that is, is carrying out the depth of cut in abrasive water jet
After projection on stream 1 in the vertical direction of one of machining locus tangential direction is no more than the feed of one times of jet diameter, edge is carried out
Also (related to the amount of feeding) can there is the processing of one of machining locus parallel direction within the scope of its working ability before abrasive water-jet 1
Effect removal slot side bottom striate region, the manufacturing deficiencies such as higher surface roughness of kerf taper and slot side bottom.Though
So due to that need to remove the loss for accelerating jet energy of material, the promotion degree for smooth areas depth is processed in fine cut
(related to the amount of feeding) cuts processing not as good as abrasive water jet streamer under other parameters same case, but the variation of the amount of feeding is so that work
There is material removal in 2 section of part, this slot side surface topography for allowing fine cut to process is in working depth increase from top to down
Reveal stronger consistency.And in the smooth cutting area depth bounds being elevated, fine cut processing can effectively reduce kerf taper
And it can provide and cut the reduction for slot side surface roughness of processing to a greater extent than abrasive water jet streamer.The material of pettiness
Material removal amount has no jet stream significantly to post deflection during the fine cut of same parameter processing feeding, and since outside exists
The broad space for not having rapidoprint to limit, even if jet stream processing part gradually loses working ability with the increase of working depth
Also can more show the trend being deflected outward (will appear the phenomenon that being deflected outward, this can be to processing quality when the amount of feeding is excessive
Negative impact is caused, such as coarse cutting area shifts to an earlier date).Abrasive water-jet fine cut processing can effectively remove reserved machining allowance,
Cooperation carries out abrasive water jet streamer and cuts the sustainable reduction slot side bottom striate region of processing, reduces kerf taper and slot side
The higher surface roughness in bottom simultaneously finally realizes the closely not damaged table of abrasive waterjet cutting with high size and the accuracy of form and position
Face.
Compared with single process, abrasive water-jet fine cut processing and light cut processing and lower hydraulic pressure, abrasive flows can be used
Amount and higher feed speed, even if back and forth in identical kerf quality item in the cutting process to big thickness composite material
It is still had higher efficiency than single process under part.In fact since big thickness material is in process for abrasive water-jet
The consumption of 1 energy, will be realized by way of reducing feed speed time processing and abrasive material in the identical situation of other parameters
Water-jet streamer is cut, there is only theoretic possibilities for the identical surface quality of fine cut processing, because too low feed speed is difficult
Applied to actual processing.
Abrasive water-jet fine cut processing, light, which cuts processing and combinations thereof, cannot be only used for removal material after big surplus is processed
Slot side striate region, promote smooth areas depth to material thickness hereinafter, reducing kerf taper and surface roughness；Also it can be used
There is high size and shape to realize in the inherent shortcoming of removal material surface and by other processing method bring manufacturing deficiencies
The closely not damaged surface of abrasive waterjet cutting of position precision.
Abrasive water-jet fine cut processing, light, which cuts processing and combinations thereof, cannot be only used for cutting processing to various types of materials, also
It can be used for aperture processing, turnery processing and the processing and forming to convex surface to various types of materials.
The present invention is not limited to the present embodiment, any equivalent concepts within the technical scope of the present disclosure or changes
Become, is classified as protection scope of the present invention.
Claims (1)
1. a kind of polymer matrix composite slab abrasive water-jet method for fine finishing, it is characterised in that: the following steps are included:
A, processing scheme is selected according to the processing method for the first time of workpiece to be processed
If workpiece to be processed is processed for the first time using abrasive waterjet cutting, B is gone to step；Otherwise, C is gone to step；
B, processing scheme is selected according to the kerf of workpiece to be processed
If having requirement on machining accuracy to notch two sides simultaneously, i.e. processing need to retain notch two sides simultaneously, then go to step B1；If
Only have requirement on machining accuracy to unilateral notch, that is, process only need retain a lateral incision, and another lateral incision as excess stock not
Make processing request, then goes to step B2；
B1, Double-Notched processing
B11, reserved allowance for finish
Reserved allowance for finish is required according to the material property of workpiece, size and the accuracy of form and position；Determine notch machining locus；
Wherein, allowance for finish calculation formula is reserved are as follows:
Then actual processing size are as follows:
In formula:
γIt is reservedIt is respectively to predict single process half notch top width and practical single process half notch top width with γ；
εJ is reservedAnd εjThe respectively prediction jth time fine cut processing amount of feeding is along the vertical line direction of upper one of machining locus tangential direction
Component of component and practical jth time fine cut processing amount of feeding together with upper on the vertical line direction of machining locus tangential direction, j ∈
[1,+∞)；εj∈ [0,2r), r is jet radius, εjVertical line direction when=0 along upper one of machining locus tangential direction is without feeding
Amount is considered as and processes without fine cut；M be fine cut processing times, m ∈ [1 ,+∞)；
WithRespectively predict that i-th group of light is cut processing and cut to the removal amount of material top plane and practical i-th group of light
Process the removal amount to material top plane；xiThe continuous light of processing, which is cut, for i-th group of light cuts processing times, xi∈[0,+∞)；N cuts for light
Processing group number, n ∈ [1 ,+∞)；
ΔIt is reservedWith accumulated error amount during accumulated error amount in Δ respectively prediction process and actual processing；
B12, roughing
According to determining machining locus with k0v0Feed speed carry out abrasive waterjet cutting, process top width be 2 γ it is bilateral
Notch；k0≥1；v0To carry out same parameter processing in a manner of conventional machining, processing quality reaches in conventional machining mode prescribed limit
Highest feed speed；v0≤vSeparation, k0v0≤vSeparation；vSeparationTo cut off material and not generating the maximum speed of lamination defect；
B13, light cut processing
Along original processing track with k2v0Feed speed carry out abrasive water jet streamer cut processing, i.e., along former track carry out without feeding add
Work；k2≥1；
B14, processing method selection
Processing method is selected, if cut precision reaches regulation machining accuracy or continues without feeding processing without more
Remaining material to be removed, processing stop, at this time notch top widthOtherwise, step B13 is turned to；
B2, the processing of unilateral notch
B21, reserved allowance for finish
Reserved allowance for finish is required according to the material property of workpiece, size and the accuracy of form and position；Determine notch machining locus；
Wherein, allowance for finish calculation formula is reserved are as follows:
Then actual processing size are as follows:
B22, roughing
According to determining machining locus with k0v0Feed speed carry out abrasive waterjet cutting, retain after processing Double-Notched
Notch has requirement on machining accuracy side in original position；
B23, processing method selection
Processing method is selected, if in terms of dimensional accuracyOr the accuracy of form and position and surface quality
Step B24 can not be turned to by reaching prescribed requirement without feeding processing；Otherwise, step B26 is turned to；
B24, fine cut processing
Abrasive water-jet fine cut processing is carried out to workpiece, that is, is carrying out the depth of cut one of machining locus tangent line along abrasive water-jet
After component on the vertical line direction in direction is no more than the feed of one times of jet diameter, with k1v0Feed speed carry out along abrasive water
The processing of one of machining locus parallel direction before jet stream；k1≥1；
B25, processing method selection
Processing method is selected, if cut precision reaches regulation machining accuracy, processing stops；Otherwise, step is turned to
B26；
B26, light cut processing
Abrasive water jet streamer is carried out along upper one of machining locus and cuts processing, i.e., along upper one of machining locus with k2v0Feed speed
Processed without feeding；
B27, processing method selection
Processing method is selected, if notch machining accuracy reaches prescribed requirement, processing stops；If cut precision does not reach
To prescribed requirement, situation is processed according to part and carries out step selection: if continuing still to have without feeding processing extra to be removed
Material meets following formula in terms of dimensional accuracy:
Or the accuracy of form and position and surface quality do not reach prescribed requirement, turn to step B26；If workpiece reach the regulation accuracy of form and position or after
It is continuous to carry out without feeding processing without extra material to be removed, and dimensional accuracy has not yet been reached, i.e., under satisfaction in terms of dimensional accuracy
Formula:
Or the workpiece accuracy of form and position and surface quality can not turn to step B24 by reaching prescribed requirement without feeding processing；
In formula, x is to have carried out fine cut number, x >=1；Y is to have carried out light to cut a group number, y >=1；
C, the following process of other processing methods
C1, reserved allowance for finish
Reserved allowance for finish is required according to the material property of workpiece, size and the accuracy of form and position；Determine notch machining locus；
Wherein, allowance for finish calculation is reserved are as follows:
Then actual processing size are as follows:
C2, roughing
According to machining mode or other special process modes, unilateral or Double-Notched is processed；
C3, fine cut processing
The abrasive water-jet fine cut processing of carry out on one side to there is requirement on machining accuracy is cut in the progress depth of cut along original processing boundary
After component in the vertical direction in line direction is no more than the feed of one times of jet diameter；With k1v0Feed speed carry out along original plus
The processing of work boundary parallel direction；
C4, processing method selection
Processing method is selected, if cut precision reaches regulation machining accuracy, processing stops；Otherwise, step C5 is turned to；
C5, light cut processing
Abrasive water jet streamer is carried out along upper one of machining locus and cuts processing, i.e., with k2v0Feed speed along upper one of machining locus
Processed without feeding；
C6, processing method selection
Processing method is selected, if notch machining accuracy reaches prescribed requirement, processing stops；If cut precision does not reach
To prescribed requirement, situation is processed according to part and is selected: if continuing still have extra material to be removed without feeding processing,
Meet following formula in terms of dimensional accuracy:
Or the accuracy of form and position and surface quality do not reach prescribed requirement, turn to step C5；If workpiece reach the regulation accuracy of form and position or after
It is continuous to carry out without feeding processing without extra material to be removed, and dimensional accuracy has not yet been reached, i.e., under satisfaction in terms of dimensional accuracy
Formula:
Or the workpiece accuracy of form and position and surface quality can not turn to step C3 by reaching prescribed requirement without feeding processing；
X is to have carried out fine cut number, x >=1；Y is to have carried out light to cut a group number, y >=1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143638.3A CN109773660B (en) | 2019-02-27 | 2019-02-27 | Polymer matrix composite thick plate abrasive water jet finish machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143638.3A CN109773660B (en) | 2019-02-27 | 2019-02-27 | Polymer matrix composite thick plate abrasive water jet finish machining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109773660A true CN109773660A (en) | 2019-05-21 |
| CN109773660B CN109773660B (en) | 2020-09-29 |
Family
ID=66485816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910143638.3A Active CN109773660B (en) | 2019-02-27 | 2019-02-27 | Polymer matrix composite thick plate abrasive water jet finish machining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109773660B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505790A (en) * | 2022-01-26 | 2022-05-17 | 武汉大学 | High-efficiency processing method for large-size blind groove abrasive jet |
| CN114683177A (en) * | 2022-02-24 | 2022-07-01 | 大连理工大学 | Abrasive water jet curved surface machining method based on multi-dimensional motion and multi-physical quantity collaborative real-time regulation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050095955A1 (en) * | 2003-09-05 | 2005-05-05 | Nakashima Propeller Co., Ltd. | Curved surface machining method and an apparatus thereof |
| CN102275099A (en) * | 2011-04-20 | 2011-12-14 | 上海机床厂有限公司 | Full-automatic grinding method of vertical internal and external grinding machine |
| CN102328248A (en) * | 2011-09-08 | 2012-01-25 | 中国航空工业第六一八研究所 | Grinding method of outer circles of high-precision slender casing parts |
| CN105537695A (en) * | 2016-03-17 | 2016-05-04 | 哈尔滨理工大学 | Coarse-pitch external thread layered turning process |
| CN106217257A (en) * | 2016-07-26 | 2016-12-14 | 佛山职业技术学院 | The measurement of a kind of grinding machine, method for grinding |
| CN106625282A (en) * | 2017-01-09 | 2017-05-10 | 山东大学 | Abrasive water-jet selective removal method for reaction-sintered silicon carbide surface residues |
| CN207013872U (en) * | 2017-05-05 | 2018-02-16 | 广东工业大学 | A kind of glass very low power processing unit (plant) |
| CN108747603A (en) * | 2018-06-12 | 2018-11-06 | 山东大学 | The coarse-fine of non-rotating optical array integrates progressive method for grinding |
-
2019
- 2019-02-27 CN CN201910143638.3A patent/CN109773660B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050095955A1 (en) * | 2003-09-05 | 2005-05-05 | Nakashima Propeller Co., Ltd. | Curved surface machining method and an apparatus thereof |
| CN102275099A (en) * | 2011-04-20 | 2011-12-14 | 上海机床厂有限公司 | Full-automatic grinding method of vertical internal and external grinding machine |
| CN102328248A (en) * | 2011-09-08 | 2012-01-25 | 中国航空工业第六一八研究所 | Grinding method of outer circles of high-precision slender casing parts |
| CN105537695A (en) * | 2016-03-17 | 2016-05-04 | 哈尔滨理工大学 | Coarse-pitch external thread layered turning process |
| CN106217257A (en) * | 2016-07-26 | 2016-12-14 | 佛山职业技术学院 | The measurement of a kind of grinding machine, method for grinding |
| CN106625282A (en) * | 2017-01-09 | 2017-05-10 | 山东大学 | Abrasive water-jet selective removal method for reaction-sintered silicon carbide surface residues |
| CN207013872U (en) * | 2017-05-05 | 2018-02-16 | 广东工业大学 | A kind of glass very low power processing unit (plant) |
| CN108747603A (en) * | 2018-06-12 | 2018-11-06 | 山东大学 | The coarse-fine of non-rotating optical array integrates progressive method for grinding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505790A (en) * | 2022-01-26 | 2022-05-17 | 武汉大学 | High-efficiency processing method for large-size blind groove abrasive jet |
| CN114505790B (en) * | 2022-01-26 | 2022-11-01 | 武汉大学 | Large-size blind groove abrasive jet flow efficient machining method |
| CN114683177A (en) * | 2022-02-24 | 2022-07-01 | 大连理工大学 | Abrasive water jet curved surface machining method based on multi-dimensional motion and multi-physical quantity collaborative real-time regulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109773660B (en) | 2020-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104999118B (en) | High-efficiency special drilling head for drilling holes in carbon fiber composite material | |
| US9446454B2 (en) | Segmented orbital drill | |
| CN107378009B (en) | A kind of micro- serrated knife tool of multi-ladder multiple-cutting-edge gradual change for carbon fibre composite drilling | |
| CN103586636B (en) | The processing method of spout and the processing unit (plant) of spout | |
| CN105234466A (en) | Slot feature side milling machining tool path generating method | |
| CN109773660A (en) | A kind of polymer matrix composite slab abrasive water-jet method for fine finishing | |
| CN201168805Y (en) | Soft metal ultralong deep hole processing tool bit | |
| CN104801935A (en) | Method for processing aircraft aluminum alloy special-shaped cabin | |
| Chen et al. | Correcting shape error located in cut-in/cut-out region in abrasive water jet cutting process | |
| CN106407622A (en) | Large-pitch thread turning tool design method | |
| CN204545588U (en) | High-accuracy forming reamer | |
| CN102814559A (en) | Threading tool bit, lathe tool and method for machining threads | |
| TW201338896A (en) | Small-diameter drill | |
| US11396048B2 (en) | Turning tool and method for metal cutting | |
| CN104772604B (en) | The processing method of steam jet on steam turbine spray vapour cover plate | |
| CN104174910B (en) | Milling type min-cutter cutting process | |
| CN109604725B (en) | Efficient cutting machining method for inner shape of thin-wall multi-groove-cavity part | |
| CN104308206A (en) | Indexable cutter blade for turning | |
| CN110695374A (en) | Groove cutting machining method | |
| CN207239234U (en) | A kind of band stops section step drill | |
| CN105014125B (en) | A kind of double-sided blade fluting chit drill suitable for rotating processing | |
| Uchiyama et al. | Surface profile analysis in milling with structured tool | |
| CN104607722A (en) | High precision forming reamer | |
| CN206936398U (en) | Single-blade rose reamer | |
| CN206326170U (en) | Semifinishing milling cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |