CN104210108B - The print defect of 3D printer makes up method and system - Google Patents
The print defect of 3D printer makes up method and system Download PDFInfo
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- CN104210108B CN104210108B CN201410466074.4A CN201410466074A CN104210108B CN 104210108 B CN104210108 B CN 104210108B CN 201410466074 A CN201410466074 A CN 201410466074A CN 104210108 B CN104210108 B CN 104210108B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000007547 defect Effects 0.000 title claims abstract description 19
- 238000007639 printing Methods 0.000 claims abstract description 46
- 239000000945 filler Substances 0.000 claims abstract description 24
- 230000000295 complement effect Effects 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims description 15
- 230000009467 reduction Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000010146 3D printing Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention provides a kind of print defect of 3D printer to make up method and system, and wherein methods described includes：The working condition of the printhead of 3D printer is monitored to determine whether current printable layer salient point and/or concave point occurs；And methods described comprises at least a following step：If there is concave point, then the position of each concave point is recorded, and complement is carried out to each concave point one by one；If there is salient point, then the position of each salient point is recorded, and amount of filler is accordingly reduced in the position of the salient point when printing next printable layer.The above method can 3D printer the optimal control of model can be quickly carried out in print procedure, greatly improve the precision of printing.
Description
Technical field
The present invention relates to 3D printing technique field, particularly relates to a kind of print defect of 3D printer and makes up method and be
System.
Background technology
3D printing is new forming technique, and wherein filler accumulation type printing technique is the most frequently used 3D printing technique.It is existing
The structure for having the 3D printer in technology is typically all divided into two layers up and down, and upper strata is printhead and XY drive mechanisms, and lower floor is load
Thing platform.The printing that the plane that its XY drive mechanism at the middle and upper levels includes to be formed in X-axis and Y-axis can move
Head, and lower floor is provided with article carrying platform.The article carrying platform of 3D printer of the prior art can rise or fall along Z-direction,
So as to by layer printing 3D workpiece.
In printing, filler accumulation type printing technique is the printhead fusion filler using heating, by controlling printhead
The filler of molten is stacked on specified location, so as to the 3D workpiece by 3D model conversations into entity.This molding mode is maximum
The advantages of be：Filler cost is low, waste less, printer arrangement simply for ease of maintenaince.But displacement and fuse due to printhead
Amount is all by Mechanical course, therefore occurs how much inaccurate shift position and fuse amount be unavoidably, so as to cause to print
The current printable layer of workpiece is that salient point and/or concave point occur.Its bumps is exactly to refer to the filler in the output in a certain precalculated position
More than predetermined value, and concave point refers to be more than predetermined value in the filler of the output in a certain precalculated position.This salient point and/or concave point
Phenomenon is probably to cause the filler in precalculated position output to be output to other positions because the control of printhead displacement is inaccurate
Put and cause salient point and/or concave point；It is also likely to be because the fuse amount in precalculated position is more than or less than predetermined value and causes
Salient point and/or concave point.Regardless of whether being due to position deviation or fuse amount mistake, its final result is all defeated in precalculated position
The amount of filler gone out is not equal to desired value, has ultimately resulted in salient point and/or concave point.
Because existing filler accumulation type printing technique successively prints, thus once current layer occur salient point and/
Or concave point and be not solved, may result in error is successively accumulated, ultimately result in printing precision decline.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of print defect of 3D printer to make up method and system, can
The salient point during 3D printing and/or concave point are remedied in time, declined with printing precision caused by preventing error accumulation.
In order to achieve the above object, the embodiment of the present invention proposes a kind of print defect of 3D printer and makes up method, bag
Include：
The working condition of the printhead of 3D printer is monitored to determine whether current printable layer salient point and/or concave point occurs；
And methods described comprises at least a following step：
If there is concave point, then the position of each concave point is recorded, and complement is carried out to each concave point one by one；
If there is salient point, then the position of each salient point is recorded, and when printing next printable layer in the position of the salient point
Put corresponding reduction amount of filler.
Wherein, the working condition of the printhead of the monitoring 3D printer is to determine whether current printable layer salient point occurs
And/or concave point, specifically include：
It is determined that the expection fuse amount of each position in N number of print position of current printable layer
It is determined that the actual fuse amount of each position in the N number of print position of layer of current printable layer
Calculate expected fuse amountWith actual fuse amountBetween difference
For each print position i, if q 'i-qi＜-δ2, then print position i fuse amount is less turns into concave point；Such as
Fruit q 'i-qi＞ δ2, then print position i fuse amount is more turns into salient point；Wherein δ2For default error threshold value.
Wherein, it is described if there is concave point, then the position of each concave point is recorded, and each concave point is mended one by one
Beat, specifically include：
It is determined that the concave point position of current printable layer；It is determined that after current printable layer printing printhead position S；Under it is determined that
One printable layer starts the position T of printhead predetermined during printing；
Position S, each concave point position, the next printable layer of printhead start to print after being printed according to current printable layer
When predetermined printhead position T, generate the mobile route of printhead complement.
Wherein, the mobile route of printhead complement is generated according to shortest path first.
Wherein, it is described accordingly to reduce amount of filler in the position of the salient point when printing next printable layer, specifically include：
Print next printable layer with the salient point relative to position when, reduce fuse amount, and the attenuating
Fuse amount be q 'i-qi。
Wherein, methods described also includes：
The print position of monitoring printhead in real time, when the print position is not equal to precalculated position, to the printhead
Position be adjusted.
Meanwhile the embodiment of the present invention also proposed a kind of print defect of 3D printer and make up system, including：
Monitoring module, for monitor 3D printer printhead working condition to determine it is convex whether current printable layer occurs
Point and/or concave point；
Control module, for controlling the adjustment to salient point and/or concave point；I.e. if there is concave point, then each concave point is recorded
Position, and complement is carried out to each concave point one by one；If there is salient point, then the position of each salient point is recorded, and beaten
When printing next printable layer amount of filler is accordingly reduced in the position of the salient point.
Meanwhile the embodiment of the present invention also proposed a kind of printhead of 3D printer, it is characterised in that including printhead sheet
Body and the sensor being provided with for detecting actual fuse amount being arranged in the print head body.
Wherein, the sensor is Infrared Surface sensor, with by detecting the moving direction of fuse and apart from determining
Actual fuse amount.
Wherein, the displacement transducer for detecting printhead displacement is additionally provided with the print head body.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
The above method can 3D printer the optimal control of model can be quickly carried out in print procedure, greatly improve and beat
The precision of print.
Brief description of the drawings
Fig. 1 is the schematic diagram for the mobile route that printhead complement is generated when carrying out concave point complement；
Fig. 2 is the schematic diagram to form salient point.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body example is described in detail.
The embodiment of the present invention proposes a kind of print defect of 3D printer and makes up method, including：
The working condition of the printhead of 3D printer is monitored to determine whether current printable layer salient point and/or concave point occurs；
And methods described comprises at least a following step：
If there is concave point, then the position of each concave point is recorded, and complement is carried out to each concave point one by one；
If there is salient point, then the position of each salient point is recorded, and when printing next printable layer in the position of the salient point
Put corresponding reduction amount of filler.
Wherein, the reason for forming concave point and salient point is no longer repeated herein.And the method solved can include the concave point of the above
Solution method and/or salient point solve method and handled.Wherein concave point solve method be specially：The position of each concave point is recorded,
And complement is carried out to each concave point one by one.And salient point solution method is specially：The position of each salient point is recorded, and is being printed
During next printable layer amount of filler is accordingly reduced in the position of the salient point.
In the above-mentioned methods, actual fuse amount can be detected by sensor, and is compared with default fuse amount, is come
Determine whether that there occurs concave point and/or salient point.Specifically, the moving direction of fuse can be detected using Infrared Surface sensor
And distance, to determine actual fuse amount.
Specifically, the working condition of the printhead of the monitoring 3D printer is to determine whether current printable layer salient point occurs
And/or concave point, specifically include：
It is determined that the expection fuse amount of each position in N number of print position of current printable layer
It is determined that the actual fuse amount of each position in the N number of print position of layer of current printable layer
Calculate expected fuse amountWith actual fuse amountBetween difference
For each print position i, if q 'i-qi＜-δ2, then print position i fuse amount is less turns into concave point；Such as
Fruit q 'i-qi＞ δ2, then print position i fuse amount is more turns into salient point；Wherein δ2For default error threshold value.
Wherein, it is described if there is concave point, then the position of each concave point is recorded, and each concave point is mended one by one
Beat, specifically include：
It is determined that the concave point position of current printable layer；It is determined that after current printable layer printing printhead position S；Under it is determined that
One printable layer starts the position T of printhead predetermined during printing；
Position S, each concave point position, the next printable layer of printhead start to print after being printed according to current printable layer
When predetermined printhead position T, generate the mobile route of printhead complement.
This is due to：The error can be ignored when printing is not very high workpiece to precise requirements, you can with by δ2
It is adjusted to bigger.And when printing the workpiece very high to precise requirements, then can be by δ2It is adjusted to smaller, or even adjustment
For 0, to ensure printing precision.
In the specific embodiment of the present invention, the movement of printhead complement can be generated according to shortest path first
Path.I.e. as shown in Figure 1, A in figure, B, C, D are four concave points that current printable layer occurs, and wherein S points are the completion printing
The location of printhead during layer, T points are the position for starting printing of next printable layer.Using shortest path first, design
Simultaneously the path of T points is reached from S points by A, B, C, tetra- points of D.As shown in figure 1, S- ＞ A- ＞ B- ＞ C- ＞ D- ＞ T are should
Shortest path.Control unit controls printhead to be moved according to this path, as process wherein concave point A, B, C, D, printhead root
Continue to print according to current location fuse amount, supplement fuse.
Wherein, it is described accordingly to reduce amount of filler in the position of the salient point when printing next printable layer, specifically include：
Print next printable layer with the salient point relative to position when, reduce fuse amount, and the attenuating
Fuse amount be q 'i-qi.So, can simply solve the problems, such as salient point.When printhead run to next printable layer correspond to it is previous
During the position of printable layer salient point, according to the fuse amount q ' of this layer of salient pointi-qi, recalculate the expection fuse amount of the position (obviously
Fuse amount fuse amount more expected than original after recalculating is small), then proceed to complete printing.
Wherein, methods described also includes：
The print position of monitoring printhead in real time, when the print position is not equal to precalculated position, to the printhead
Position be adjusted.
Meanwhile the embodiment of the present invention also proposed a kind of print defect of 3D printer and make up system, including：
Monitoring module, for monitor 3D printer printhead working condition to determine it is convex whether current printable layer occurs
Point and/or concave point；
Control module, for controlling the adjustment to salient point and/or concave point；I.e. if there is concave point, then each concave point is recorded
Position, and complement is carried out to each concave point one by one；If there is salient point, then the position of each salient point is recorded, and beaten
When printing next printable layer amount of filler is accordingly reduced in the position of the salient point.
The working condition of the printhead of 3D printer is monitored to determine whether current printable layer salient point and/or concave point occurs；
And methods described comprises at least a following step：
If there is concave point, then the position of each concave point is recorded, and complement is carried out to each concave point one by one；
If there is salient point, then the position of each salient point is recorded, and when printing next printable layer in the position of the salient point
Put corresponding reduction amount of filler.
Wherein it is possible to detect actual fuse amount by sensor, and it is compared with default fuse amount, to determine whether
There occurs concave point and/or salient point.Specifically, the moving direction of fuse and distance can be detected using Infrared Surface sensor,
To determine actual fuse amount.
Specifically, the working condition of the printhead of the monitoring 3D printer is to determine whether current printable layer salient point occurs
And/or concave point, specifically include：
It is determined that the expection fuse amount of each position in N number of print position of current printable layer
It is determined that the actual fuse amount of each position in the N number of print position of layer of current printable layer
Calculate expected fuse amountWith actual fuse amountBetween difference
For each print position i, if q 'i-qi＜-δ2, then print position i fuse amount is less turns into concave point；Such as
Fruit q 'i-qi＞ δ2, then print position i fuse amount is more turns into salient point；Wherein δ2For default error threshold value.
Wherein, it is described if there is concave point, then the position of each concave point is recorded, and each concave point is mended one by one
Beat, specifically include：
It is determined that the concave point position of current printable layer；It is determined that after current printable layer printing printhead position S；Under it is determined that
One printable layer starts the position T of printhead predetermined during printing；
Position S, each concave point position, the next printable layer of printhead start to print after being printed according to current printable layer
When predetermined printhead position T, generate the mobile route of printhead complement.
This is due to：The error can be ignored when printing is not very high workpiece to precise requirements, you can with by δ2
It is adjusted to bigger.And when printing the workpiece very high to precise requirements, then can be by δ2It is adjusted to smaller, or even adjustment
For 0, to ensure printing precision.
In the specific embodiment of the present invention, the movement of printhead complement can be generated according to shortest path first
Path.I.e. as shown in Figure 1, A in figure, B, C, D are four concave points that current printable layer occurs, and wherein S points are the completion printing
The location of printhead during layer, T points are the position for starting printing of next printable layer.Using shortest path first, design
Simultaneously the path of T points is reached from S points by A, B, C, tetra- points of D.As shown in figure 1, S- ＞ A- ＞ B- ＞ C- ＞ D- ＞ T are should
Shortest path.Control unit controls printhead to be moved according to this path, as process wherein concave point A, B, C, D, printhead root
Continue to print according to current location fuse amount, supplement fuse.
Wherein, it is described accordingly to reduce amount of filler in the position of the salient point when printing next printable layer, specifically include：
Print next printable layer with the salient point relative to position when, reduce fuse amount, and the attenuating
Fuse amount be q 'i-qi.So, can simply solve the problems, such as salient point.When printhead run to next printable layer correspond to it is previous
During the position of printable layer salient point, according to the fuse amount q ' of this layer of salient pointi-qi, recalculate the expection fuse amount of the position (obviously
Fuse amount fuse amount more expected than original after recalculating is small), then proceed to complete printing.
Wherein, the system also includes：
Real-time monitoring modular, for monitoring the print position of printhead in real time, when the print position is not equal to pre-determined bit
When putting, the position of the printhead is adjusted.
In order to realize monitoring fuse amount, the embodiment of the present invention proposes a kind of printhead of 3D printer, including printhead
Body and the sensor being provided with for detecting actual fuse amount being arranged in the print head body.The sensor is infrared
Surface probe, to determine actual fuse amount by detecting moving direction and the distance of fuse.In the print head body also
Provided with the displacement transducer for detecting printhead displacement.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of print defect of 3D printer makes up method, it is characterised in that including：
The working condition of the printhead of 3D printer is monitored to determine whether current printable layer salient point and/or concave point occurs；
And methods described comprises at least a following step：
If there is concave point, then the position of each concave point is recorded, and complement is carried out to each concave point one by one；
If there is salient point, then the position of each salient point is recorded, and when printing next printable layer in the position phase of the salient point
Amount of filler should be reduced；
Wherein, it is described monitoring 3D printer printhead working condition with determine current printable layer whether occur salient point and/or
Concave point, specifically include：
It is determined that the expection fuse amount of each position in N number of print position of current printable layer
It is determined that the actual fuse amount of each position in the N number of print position of layer of current printable layer
Calculate expected fuse amountWith actual fuse amountBetween difference
For each print position i, if q 'i-qi＜-δ2, then print position i fuse amount is less turns into concave point；If q
′i-qi＞ δ2, then print position i fuse amount is more turns into salient point；Wherein δ2For default error threshold value.
2. the print defect of 3D printer according to claim 1 makes up method, it is characterised in that described if there is recessed
Point, then the position of each concave point is recorded, and complement is carried out to each concave point one by one, specifically included：
It is determined that the concave point position of current printable layer；It is determined that after current printable layer printing printhead position S；It is determined that descend a dozen
Print layer starts the position T of printhead predetermined during printing；
Position S, each concave point position, the next printable layer of printhead start pre- during printing after being printed according to current printable layer
The position T of fixed printhead, generate the mobile route of printhead complement.
3. the print defect of 3D printer according to claim 2 makes up method, it is characterised in that is calculated according to shortest path
Method generates the mobile route of printhead complement.
4. the print defect of 3D printer according to claim 1 makes up method, it is characterised in that described next in printing
Amount of filler is accordingly reduced in the position of the salient point during printable layer, is specifically included：
Print next printable layer with the salient point relative to position when, reduce fuse amount, and the reduction fuse
Measure as q 'i-qi。
5. the print defect of 3D printer according to claim 1 makes up method, it is characterised in that methods described is also wrapped
Include：
The print position of monitoring printhead in real time, when print position is not equal to precalculated position, enters to the position of the printhead
Row adjustment.
6. a kind of print defect of 3D printer makes up system, it is characterised in that including：
Monitoring module, for monitor 3D printer printhead working condition to determine whether current printable layer salient point occurs
And/or concave point；
Control module, for controlling the adjustment to salient point and/or concave point；I.e. if there is concave point, then the position of each concave point is recorded
Put, and complement is carried out to each concave point one by one；If there is salient point, then the position of each salient point is recorded, and under printing
During one printable layer amount of filler is accordingly reduced in the position of the salient point；
Wherein, it is described monitoring 3D printer printhead working condition with determine current printable layer whether occur salient point and/or
Concave point, specifically include：
It is determined that the expection fuse amount of each position in N number of print position of current printable layer
It is determined that the actual fuse amount of each position in the N number of print position of layer of current printable layer
Calculate expected fuse amountWith actual fuse amountBetween difference
For each print position i, if q 'i-qi＜-δ2, then print position i fuse amount is less turns into concave point；If q
′i-qi＞ δ2, then print position i fuse amount is more turns into salient point；Wherein δ2For default error threshold value.
7. the print defect of 3D printer according to claim 6 makes up system, it is characterised in that described if there is recessed
Point, then the position of each concave point is recorded, and complement is carried out to each concave point one by one, specifically included：
It is determined that the concave point position of current printable layer；It is determined that after current printable layer printing printhead position S；It is determined that descend a dozen
Print layer starts the position T of printhead predetermined during printing；
Position S, each concave point position, the next printable layer of printhead start pre- during printing after being printed according to current printable layer
The position T of fixed printhead, generate the mobile route of printhead complement.
8. the print defect of 3D printer according to claim 7 makes up system, it is characterised in that is calculated according to shortest path
Method generates the mobile route of printhead complement.
9. the print defect of 3D printer according to claim 6 makes up system, it is characterised in that described next in printing
Amount of filler is accordingly reduced in the position of the salient point during printable layer, is specifically included：
Print next printable layer with the salient point relative to position when, reduce fuse amount, and the reduction fuse
Measure as q 'i-qi。
10. the print defect of 3D printer according to claim 6 makes up system, it is characterised in that also includes：
The print position of monitoring printhead in real time, when print position is not equal to precalculated position, enters to the position of the printhead
Row adjustment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410466074.4A CN104210108B (en) | 2014-09-15 | 2014-09-15 | The print defect of 3D printer makes up method and system |
| HK15105761.9A HK1205063A1 (en) | 2014-09-15 | 2015-06-17 | Printing defect remedying method of a 3d printer and a system thereof 3d |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410466074.4A CN104210108B (en) | 2014-09-15 | 2014-09-15 | The print defect of 3D printer makes up method and system |
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| Publication Number | Publication Date |
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| CN104210108A CN104210108A (en) | 2014-12-17 |
| CN104210108B true CN104210108B (en) | 2017-11-28 |
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| CN201410466074.4A Expired - Fee Related CN104210108B (en) | 2014-09-15 | 2014-09-15 | The print defect of 3D printer makes up method and system |
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| HK (1) | HK1205063A1 (en) |
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2014
- 2014-09-15 CN CN201410466074.4A patent/CN104210108B/en not_active Expired - Fee Related
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2015
- 2015-06-17 HK HK15105761.9A patent/HK1205063A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005084581A1 (en) * | 2004-03-03 | 2005-09-15 | Japan Science And Technology Agency | Medical three-dimensional structure, process for producing the same and production apparatus |
| WO2011019287A2 (en) * | 2009-08-14 | 2011-02-17 | Norsk Titanium Components As | Method and device for manufacturing titanium objects |
| WO2012127456A1 (en) * | 2011-03-24 | 2012-09-27 | Ramot At Tel-Aviv University Ltd. | Method and devices for solid structure formation by localized microwaves |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11813712B2 (en) | 2019-12-20 | 2023-11-14 | Applied Materials, Inc. | Polishing pads having selectively arranged porosity |
| US11806829B2 (en) | 2020-06-19 | 2023-11-07 | Applied Materials, Inc. | Advanced polishing pads and related polishing pad manufacturing methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104210108A (en) | 2014-12-17 |
| HK1205063A1 (en) | 2015-12-11 |
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