CN207345088U - 3 D-printing synchronization microtomography online monitoring system - Google Patents
3 D-printing synchronization microtomography online monitoring system Download PDFInfo
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Abstract
The utility model discloses a kind of 3 D-printing synchronization microtomography online monitoring system, it is related to three-dimensional printing technology field, to solve the technical problem that existing 3 D-printing on-line monitoring can not realize that imaging volume expands and full depth is imaged.In 3 D-printing synchronization microtomography online monitoring system described in the utility model, the structure of the current printable layer of PC machine real time and on line monitoring, and error caused by during cumulative covering bonding printed material；Central Control Module is controlled printing head, three axis mobile modules and nozzle carry arm；Sample detection probe is synchronized with the movement with nozzle carry arm；Three-dimensional high-precision noninvasive imaging host computer control sample detection probe completes scanning and imaging；Sample detection probe coordinates print platform or nozzle carry arm to be moved along three axis axis, completes a horizontal area and longitudinal depth scan, and printing head continues to print, detects again, until terminating；The data reconstruction of detection into threedimensional model, is realized full depth imaging by PC machine.
Description
Technical field
Three-dimensional printing technology field is the utility model is related to, more particularly to a kind of 3 D-printing synchronization microtomography is online
Monitoring system.
Background technology
3 D-printing is based on rapid shaping Layered manufacturing principle, material/cell can be assembled according to Design Orientation and formed
Three-dimensional structure, provides newly to manufacture heterogeneous, labyrinth industrial part, consumer article, medical instrument and histoorgan
Technology.But current three-dimensional printing technology still has many problems, the Minute pores as existing for interiors of products, exist and do not melt
The metal dust defect of change, towards the uniformity of the internal microstructure and design of the biological 3 D-printing stent of medical field.
The reason for causing these problems has very much, such as the thermal process of 3 D-printing complexity, material it is uneven, equipment status parameter is not
Stablize, shape of product is complicated and technological design etc., such as biological 3 D-printing there are the problem of, be due to beat
The deformation behavior of material and the random error of print procedure are printed, causes the accuracy reduction of print structure and batch poor, it is difficult to send out
Wave the geometry, the machine that are precisely controlled advantage, not only directly affect printing product of design air exercise printing product machinery and biology performance
The characteristics such as tool, fluid, cellular activity, the 26S Proteasome Structure and Function for the printing product that can also fight each other, which is rebuild, brings bigger uncertain.
Such a complicated process, common technological means is it is difficult to ensure that in interiors of products different zones, and product is with producing
Between product and distinct device produces the consistency of performance of product, it is difficult to ensure that the repeatability of technique.Process repeatability and
Quality conformance is the key of three-dimensional printing technology popularization and application, the medical field it is particularly important that.Therefore by advanced section
Technological means is learned, the change of monitor closely 3 D-printing process status creates closed-loop control system, and adjusting technological parameter in real time is
Best solution method.High-resolution, full depth on-line monitoring print procedure, in real time detection printing lack during 3 D-printing
Fall into, quantify feedback regulation print parameters, reduce the deviation of printing and design, improve the fidelity of print structure, for fully hair
The structure customization advantage for waving 3 D-printing is most important.
To realize that print procedure is monitored on-line, the monitoring device of 3 D-printing equipment currently on the market is all taken the photograph using high definition
Image space formula prints the molding effect of current layer surface to monitor, and prompts the print defects such as salivation, fracture of wire, feeds back print parameters tune
It is whole；Such technology can real non-destructive detection printing surface shape characteristic, but can not detect under printing surface the structure of each layer and
Forming errors, can not be to carrying out on-line checking inside molding three-dimensional structure.During actual 3 D-printing, current printing
The structure of layer, then cover when bonding one or more layers printed material, its structure can change, special compared with large deformation particularly with having
Obvious hysteresis quality occurs in the material of property and stress, the sizing for printing Rotating fields.This requires 3 D-printing monitors skill on-line
Art must have certain depth finding imaging capability, therefore three-dimensional high definition noninvasive imaging technology is into prioritizing selection.
Existing 3 Dimension Image Technique, such as micro- computed tomography (micro-computed tomography,
Micro-CT), magnetic resonance imaging (magnetic resonance imaging, MRI) technology, ultrasonic elastograph imaging
(Ultrasound elastography), opto-acoustic microscopic imaging (Photoacoustic microscopy, PAM) etc. were once used for
The non-destructive imaging and detection of industry, medical instrument and organizational project, but these imaging techniques are online for 3 D-printing
Monitoring still has problem.As micro-CT is too low for high-moisture material image contrast, and the ionic effect of X-ray
Active material can be damaged；Ultrasonic elastograph imaging limited resolution, and need contact imaging；MRI limited resolutions, equipment are huge
Greatly, and its work superconducting magnet it is expensive, use cost is excessive；PAM improves imaging depth and resolution problem, still
The signal of PAM depends on local light stream.Online non-destructive monitoring during these all unsuitable 3 D-printings.
Three-dimensional optical imaging technique, such as confocal microscopy (Confocal Microscopy, CM), multi-photon microscopy
(Multiphoton microscopy, MPM), optical coherence tomography (optical coherence tomography,
OCT), can lossless, non-contact, high-resolution, depth imaging, possess the innate advantage of suitable 3 D-printing on-line monitoring, but this
A little three-dimensional optical imaging techniques there is imaging volume it is limited the problem of.Such as, CM exists the imaging depth of high scattering sample
The imaging depth of 0.1mm-1mm, MPM are 0.4mm-1.5mm, and OCT image depth is in 2mm-10mm, and the horizontal stroke of three kinds of technologies
There is coupling trade-off relationship to resolution ratio and horizontal areas imaging.Therefore, three-dimensional optical imaging technique is applied to 3 D-printing
On-line monitoring, solves the key that imaging volume expansion and the imaging of full depth are technologies.
Utility model content
The purpose of this utility model is to provide a kind of 3 D-printing synchronization microtomography online monitoring system, to solve
Existing 3 D-printing on-line monitoring can not realize the technical problem that imaging volume expands and full depth is imaged.
The utility model provides a kind of 3 D-printing synchronization microtomography online monitoring system, including：Print parameters can
The 3 D-printing equipment and three-dimensional optical high accuracy non-destructive imaging system of control；The controllable 3 D-printing equipment bag of the print parameters
Include：PC machine, Central Control Module, print platform, printing head, tri- axis mobile modules of X/Y/Z and nozzle carry arm, the three-dimensional
High-accuracy optical non-destructive imaging system includes：Three-dimensional high-precision noninvasive imaging host and sample detection probe；The PC machine is used for
Analyzing three-dimensional stent model is edited, according to demand, edits print parameters and detection parameters, sends Machining Instruction, and real-time online
Monitor the structure of current printable layer, and error caused by during cumulative one or more layers printed material of covering bonding；The center
Control module is used to receive Machining Instruction, and to the printing head, tri- axis mobile modules of the X/Y/Z and the nozzle carry
Arm is controlled；The sample detection probe carry is synchronized with the movement on the nozzle carry arm, and with the nozzle carry arm；
The three-dimensional high-precision noninvasive imaging host is connected with the PC machine, is used for transmission data and is controlled the sample detection to pop one's head in
Complete scanning and imaging；The sample detection probe coordinates the print platform or the nozzle carry arm along X-axis/Y-axis/Z axis
Movement, completes a horizontal area scanning and the scanning of longitudinal depth, and the sample detection probe completes one-time detection, institute at this time
State printing head to continue to print, when printing certain thickness, detect again, repeat this operation, until printing terminates；After, institute
PC machine is stated by the data reconstruction of detection into threedimensional model, realizes full depth imaging.
Wherein, the three-dimensional high-precision noninvasive imaging host includes：Optical coherence tomography (OCT), multi-photon are micro-
One or more combinations of imaging technique (MPM) or confocal microscopy (CM) host.
Specifically, the sample detection probe includes：Machine vision imaging module and microtomography detection module；It is described
Machine vision imaging module is monitored for visual field, and the microtomography detection module is gathered for small range high precision image.
Further, the print parameters of the PC machine editor and detection parameters include：Three-dimensional optical high accuracy noninvasive imaging
Top thickness h0 after the effective imaging depth h of host imaging depth H, material, printing, detects print thickness h+h0 first,
Subsequent detection print thickness h.
Further, the scanning of longitudinal depth is imaged according to the three-dimensional optical high accuracy noninvasive imaging host
Depth H and the effective imaging depth h of the material are segmented.
During practical application, the controllable 3 D-printing equipment of the print parameters includes：Towards industry 3 D-printing equipment,
3 D-printing equipment towards biology and the 3 D-printing equipment towards medical treatment.
Wherein, the tri- axis mobile modules of X/Y/Z can be replaced three-axis moving module.
Wherein, the tri- axis mobile modules of X/Y/Z can be replaced sixdegree-of-freedom simulation.
Relative to the prior art, 3 D-printing synchronization microtomography online monitoring system described in the utility model has
Following advantage：
In 3 D-printing synchronization microtomography online monitoring system provided by the utility model, including：Print parameters can
The 3 D-printing equipment and three-dimensional optical high accuracy non-destructive imaging system of control；Wherein, the controllable 3 D-printing equipment of print parameters
Including：PC machine, Central Control Module, print platform, printing head, tri- axis mobile modules of X/Y/Z and nozzle carry arm, three-dimensional light
Learning high-precision non-destructive imaging system includes：Three-dimensional high-precision noninvasive imaging host and sample detection probe；Specifically, PC machine is used for
Analyzing three-dimensional stent model is edited, according to demand, edits print parameters and detection parameters, sends Machining Instruction, and real-time online
Monitor the structure of current printable layer, and error caused by during cumulative one or more layers printed material of covering bonding；Center controls
Module is used to receive Machining Instruction, and printing head, tri- axis mobile modules of X/Y/Z and nozzle carry arm are controlled；Sample
Detection probe carry is synchronized with the movement on nozzle carry arm, and with nozzle carry arm；Three-dimensional high-precision noninvasive imaging host and PC
Machine connects, and is used for transmission data and controls sample detection probe to complete scanning and imaging；Further, sample detection probe is matched somebody with somebody
Close print platform or nozzle carry arm to move along X-axis/Y-axis/Z axis, complete a horizontal area scanning and the scanning of longitudinal depth,
Sample detection probe completes one-time detection at this time, and printing head continues to print, and when printing certain thickness, detects again, repeats this
Operation, until printing terminates；After, the data reconstruction of detection into threedimensional model, is realized full depth imaging by PC machine.Thus divide
Analysis understands that 3 D-printing synchronization microtomography online monitoring system provided by the utility model, can utilize three-dimensional high-precision
Non-destructive imaging system is integrated in 3 D-printing equipment, according to the specific imaging depth of material and coordinates the printing of 3 D-printing equipment
Platform or nozzle arm X/Y axial directions or Z axis to movement, carry out depth fractional scanning, by longitudinal automatic Mosaic, realize three-dimensional complete
Depth is imaged, and solves error caused by individual layer printing adds up；Also, realizing the laterally basis of a wide range of monitoring and quantitatively characterizing
On, further realize the optimization of depth section print parameters and effectively control, so as to fulfill the synchronous microbedding analysis on-line monitoring of printing, and then
Efficiently solve the 3 D-printing on-line monitoring big visual field of transverse and longitudinal and high accuracy is difficult to take into account problem.
The utility model also provides a kind of 3 D-printing synchronization microtomography on-line monitoring method, including：Print parameters
Controllable 3 D-printing equipment and three-dimensional optical high accuracy non-destructive imaging system；Wherein, the controllable three-dimensional of the print parameters is beaten
Printing apparatus includes：PC machine, Central Control Module, print platform, printing head, tri- axis mobile modules of X/Y/Z and nozzle carry arm,
The three-dimensional optical high accuracy non-destructive imaging system includes：Three-dimensional high-precision noninvasive imaging host and sample detection probe；It is described
Three-dimensional optical high accuracy non-destructive imaging system is integrated in the controllable 3 D-printing equipment of the print parameters, and it is same to carry out 3 D-printing
Step on-line monitoring, integrates more visual field collaboration visual imagings, realizes the quick lateral extent positioning of print procedure surface monitoring；Pass through
Print the depth fractional scanning of cured layer and longitudinal automatic Mosaic algorithm realizes the full depth Imaging: Monitoring of whole printing process, and
In real time using the print parameters optimization and control of the next increase depth segment of depth fractional scanning result feedback guidance, beaten with realizing
The synchronous microtomography on-line monitoring of print；While product completion manufacture is printed, the three-dimensional of printing product internal structure is obtained
Model, completes Quality Control.
Wherein, the full depth Imaging: Monitoring is that the stent model for designing modelling module imports three-dimensional printer,
And print parameters are set in printing, detection parameters setup module；It is micro- in the sample detection probe in whole printing process
Tomography detection module is scanned detection in real time, and machine vision imaging module real time imagery, printing and detection are in whole mistake
In journey alternately；After often completing single pass, realize a depth fractional scanning, monitoring judgment module judge whether to need after
Continuous printing；Such as print and do not complete, it is necessary to continue to print, printing adjustment information feeds back to printer print module, lasting printing；Such as
Printing has been completed to print again, terminates reminding module prompting printing and terminates, detection also terminates at the same time；Monitored in printing
Detection information is inputed to image mosaic module, image mosaic by Cheng Zhong, microtomography detection module when monitoring print procedure
Scanning result adjacent twice is completed image mosaic, is finally completed in three-dimensional reconstruction module by module by longitudinal spliced algorithm
The three-dimensional image reconstruction of product；Machine vision imaging module is also by image transmitting to data memory module；It is imaged and supervises in full depth
During survey, the PC machine is according to setup parameter generation printing path and the movement road of microtomography detection module detection probe
Footpath.
Specifically, the depth fractional scanning is that the sample detection probe coordinates the printing of 3 D-printing equipment to put down
Platform or nozzle arm Z axis to movement, realize the scanning of setting imaging depth；Beyond the stent of setting transversal scanning scope, coordinate
The movement of print platform or nozzle arm the X/Y axial directions of 3 D-printing equipment, takes checkerboard type detection mode to be scanned, real
Now set the scanning of transversal scanning area；On this basis, the PC machine realizes Multiple-Scan image by longitudinal spliced algorithm
Splicing and longitudinal direction superposition, complete the reconstruction of threedimensional model.
Further, the splicing of the longitudinal spliced algorithm is：Depth fractional scanning, obtained data are carried out first
By merging algorithm for images, picture is horizontally-spliced in sequence, the picture for completing all single detections splices and obtains effect
Figure, then the data that different batches are scanned are stitched together, and finally obtain Three-dimension Reconstruction Model.
During practical application, the controllable 3 D-printing equipment of the print parameters includes：Towards industry 3 D-printing equipment,
3 D-printing equipment towards biology and the 3 D-printing equipment towards medical treatment.
3 D-printing synchronization microtomography on-line monitoring method microtomography synchronous with above-mentioned 3 D-printing exists
Line monitoring system is identical relative to advantage possessed by the prior art, and details are not described herein.
That is, 3 D-printing synchronization microtomography online monitoring system provided by the utility model and method, by beating
The quick lateral extent positioning of print process surface monitoring and the full depth Imaging: Monitoring of whole printing process, realize beating for depth section
Parameter optimization and control are printed, so as to fulfill the synchronous microbedding analysis on-line monitoring of printing, and then realizes the three-dimensionals such as industry, consumption or biology
In product print procedure, high accuracy, the three-dimension monitor and feedback regulation of full depth.
Brief description of the drawings
The attached drawing for forming the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form the improper restriction to the utility model.
In attached drawing：
Fig. 1 is that the structure for the 3 D-printing synchronization microtomography online monitoring system that the utility model embodiment provides is shown
It is intended to；
Fig. 2 is full depth in the 3 D-printing synchronization microtomography on-line monitoring method that the utility model embodiment provides
The flow diagram of Imaging: Monitoring；
Fig. 3 is depth point in the 3 D-printing synchronization microtomography on-line monitoring method that the utility model embodiment provides
The flow diagram of section scanning；
Fig. 4 is longitudinally to be spelled in the 3 D-printing synchronization microtomography on-line monitoring method that the utility model embodiment provides
Connect the flow diagram of algorithm.
In figure：1-PC machines；2- Central Control Module；3- print platforms；4- three-dimensional high-precision noninvasive imaging hosts；
5- printing heads；Tri- axis mobile modules of 6-X/Y/Z；7- nozzle carry arms；8- sample detections are popped one's head in.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the utility model can
To be mutually combined.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is that the structure for the 3 D-printing synchronization microtomography online monitoring system that the utility model embodiment provides is shown
It is intended to.
As shown in Figure 1, the utility model embodiment provides a kind of 3 D-printing synchronization microtomography online monitoring system,
Including：The controllable 3 D-printing equipment of print parameters and three-dimensional optical high accuracy non-destructive imaging system；Print parameters it is controllable three
Dimension printing device includes：PC machine 1, Central Control Module 2, print platform 3, printing head 5, tri- axis mobile modules 6 of X/Y/Z and spray
Head carry arm 7, three-dimensional optical high accuracy non-destructive imaging system includes：Three-dimensional high-precision noninvasive imaging host 4 and sample detection are visited
First 8；PC machine 1 is used to edit analyzing three-dimensional stent model, according to demand, edits print parameters and detection parameters, sends processing and refers to
Order, and the structure of the current printable layer of real time and on line monitoring, and caused by during cumulative one or more layers printed material of covering bonding
Error；Central Control Module 2 is used to receive Machining Instruction, and to printing head 5, tri- axis mobile modules 6 of X/Y/Z and nozzle carry
Arm 7 is controlled；Sample detection 8 carries of probe are synchronized with the movement on nozzle carry arm 7, and with nozzle carry arm 7；It is three-dimensional high-precision
Degree noninvasive imaging host 4 is connected with PC machine 1, is used for transmission data and is controlled sample detection probe 8 to complete scanning and imaging；Sample
Product detection probe 8 coordinates print platform 3 or nozzle carry arm 7 to be moved along X-axis/Y-axis/Z axis, complete a horizontal area scanning and
The scanning of longitudinal depth, at this time sample detection probe 8 complete one-time detections, printing head 5 continues to print, and prints certain thickness
When, detect again, repeat this operation, until printing terminates；After, PC machine 1 by the data reconstruction of detection into threedimensional model, it is real
Now full depth imaging.
Relative to the prior art, the 3 D-printing synchronization microtomography on-line monitoring system described in the utility model embodiment
System has the advantage that：
In the 3 D-printing synchronization microtomography online monitoring system that the utility model embodiment provides, as shown in Figure 1,
Including：The controllable 3 D-printing equipment of print parameters and three-dimensional optical high accuracy non-destructive imaging system；Wherein, print parameters are controllable
3 D-printing equipment include：PC machine 1, Central Control Module 2, print platform 3, printing head 5, tri- axis mobile modules 6 of X/Y/Z
And nozzle carry arm 7, three-dimensional optical high accuracy non-destructive imaging system include：Three-dimensional high-precision noninvasive imaging host 4 and sample inspection
Probing first 8；Specifically, PC machine 1 is used to edit analyzing three-dimensional stent model, according to demand, edits print parameters and detection parameters,
Machining Instruction, and the structure of the current printable layer of real time and on line monitoring are sent, and cumulative covering bonds one or more layers printing material
Error caused by during material；Central Control Module 2 is used to receive Machining Instruction, and to printing head 5, tri- axis mobile modules 6 of X/Y/Z
And nozzle carry arm 7 is controlled；Sample detection pops one's head in 8 carries on nozzle carry arm 7, and fortune synchronous with nozzle carry arm 7
It is dynamic；Three-dimensional high-precision noninvasive imaging host 4 is connected with PC machine 1, is used for transmission data and is controlled sample detection probe 8 to complete to sweep
Retouch and be imaged；Further, sample detection probe 8 coordinates print platform 3 or nozzle carry arm 7 to be moved along X-axis/Y-axis/Z axis, complete
Into the scanning of horizontal area and the scanning of longitudinal depth, sample detection probe 8 completes one-time detections at this time, printing head 5 after
Continuous printing, when printing certain thickness, is detected again, repeats this operation, until printing terminates；After, PC machine 1 is by the number of detection
According to threedimensional model is reconstructed into, full depth imaging is realized.From this analysis, the 3 D-printing that the utility model embodiment provides is same
Microtomography online monitoring system is walked, 3 D-printing equipment, root can be integrated in using three-dimensional high-precision non-destructive imaging system
According to material specific imaging depth and coordinate 3 D-printing equipment print platform or nozzle arm X/Y axial directions or Z axis to movement,
Depth fractional scanning is carried out, by longitudinal automatic Mosaic, realizes three-dimensional depth imaging entirely, solves to miss caused by individual layer printing is cumulative
Difference；Also, on the basis of laterally a wide range of monitoring and quantitatively characterizing is realized, further realize the optimization of depth section print parameters with
Effectively control, so as to fulfill the synchronous microbedding analysis on-line monitoring of printing, and then efficiently solves 3 D-printing on-line monitoring transverse and longitudinal
Big visual field and high accuracy are difficult to take into account problem.
Herein it should be added that, above-mentioned sample detection probe 8 coordinate 3 D-printing equipment print platform 3 or
Nozzle arm X/Y axis or Z axis to movement, cannot such as meet transversal scanning requirement, three-axis moving module or six degree of freedom can be increased
Mechanical arm etc..
Wherein, above-mentioned three-dimensional high-precision noninvasive imaging host 4 can include：Optical coherence tomography (OCT), multi-photon
One or more combinations of micro-imaging technique (MPM) or confocal microscopy (CM) host.Based on OCT technology, such as
Telesto series, GANYMEDE-II series and IVS-1000/2000 of Santec companies of thorlabs companies etc.；It is based on
MPM technologies, such as the FVMPE-RS systems of Olympus Corp and the Bergamo-II series of Thorlabs companies etc.；It is based on
CM technologies, such as the Zeiss LSM800 of Zeiss company and the LEXT-OLS4100 of Olympus Corp etc..
It should be added that, it is high-precision that the utility model embodiment is not limited to above-described such optics herein
Noninvasive imaging technology is spent, all high-precision noninvasive imaging technologies based on optical chromatography should be all in protection domain.
Specifically, above-mentioned sample detection probe 8 can include：Machine vision imaging module and microtomography detection mould
Block；The machine vision imaging module is monitored for visual field, which adopts for small range high precision image
Collection.
Further, the print parameters and detection parameters that above-mentioned PC machine 1 is edited can include：Three-dimensional optical is lossless in high precision
The top thickness h0 after host imaging depth H, the effective imaging depth h of material, printing is imaged, detects print thickness h+ first
H0, subsequent detection print thickness h.Product print thickness h+h0 first, can according to material effective imaging depth h and OCT, MPM or
CM host imaging depths H is set, and h+h0 should be less than maximum imaging depth H.
Further, the scanning of above-mentioned longitudinal depth is according to three-dimensional optical high accuracy noninvasive imaging host imaging depth
H and the effective imaging depth h of material are segmented.Such as CM to the imaging depth of high scattering sample in 0.1mm-1mm, the imaging of MPM
Depth is 0.4mm-1.5mm, and for OCT image depth in 2mm-10mm, it is imaging depth H's that recommendation, which is segmented effective imaging depth h,
Between 40%-70%.
During practical application, the controllable 3 D-printing equipment of above-mentioned print parameters includes：Towards industry 3 D-printing equipment,
3 D-printing equipment towards biology and the 3 D-printing equipment towards medical treatment.Certainly, above-mentioned three kinds of three-dimensionals are also not limited to beat
Printing apparatus, other rational 3 D-printing equipment.
Fig. 2 is full depth in the 3 D-printing synchronization microtomography on-line monitoring method that the utility model embodiment provides
The flow diagram of Imaging: Monitoring；Fig. 3 is that the 3 D-printing synchronization microtomography that the utility model embodiment provides is supervised online
The flow diagram of depth fractional scanning in prosecutor method；Fig. 4 is the 3 D-printing synchronization microbedding that the utility model embodiment provides
Analysis is imaged the flow diagram of longitudinal spliced algorithm in online monitoring method.
The utility model embodiment also provides a kind of 3 D-printing synchronization microtomography on-line monitoring method, such as Fig. 1 institutes
Show, including：The controllable 3 D-printing equipment of print parameters and three-dimensional optical high accuracy non-destructive imaging system；Wherein, print parameters
Controllable 3 D-printing equipment includes：PC machine 1, Central Control Module 2, print platform 3, printing head 5, the movement of tri- axis of X/Y/Z
Module 6 and nozzle carry arm 7, three-dimensional optical high accuracy non-destructive imaging system include：Three-dimensional high-precision noninvasive imaging host 4 and sample
Product detection probe 8；Three-dimensional optical high accuracy non-destructive imaging system is integrated in the controllable 3 D-printing equipment of print parameters, carries out three
The synchronous on-line monitoring of dimension printing, integrates more visual field collaboration visual imagings, realizes the quick lateral extent of print procedure surface monitoring
Positioning；As in Figure 2-4, whole printing is realized by the depth fractional scanning and longitudinal automatic Mosaic algorithm that print cured layer
The full depth Imaging: Monitoring of process, and the printing of the next increase depth segment of depth fractional scanning result feedback guidance is utilized in real time
Parameter optimization and control, synchronous microtomography on-line monitoring is printed to realize；While product completion manufacture is printed, obtain
The threedimensional model of product internal structure is printed, completes Quality Control.
Wherein, as shown in Fig. 2, above-mentioned full depth Imaging: Monitoring is to lead the stent model that modelling module 2.1 designs
Enter three-dimensional printer 2.2, and print parameters are set in printing, detection parameters setup module 2.3；In whole printing process, sample
Microtomography detection module 2.51 in product detection probe is scanned detection in real time, and machine vision imaging module 2.52 is real-time
Imaging, prints and detects in whole process alternately；After often completing single pass, a depth fractional scanning is realized, supervise
Survey judgment module 2.6 and judge whether that needs continue to print；Such as print and do not complete, it is necessary to continue to print (being represented with Y), printing adjustment
Information feeds back to printer print module 2.4, lasting printing；Complete again to print and (represented with N) as printed, terminated
Reminding module 2.7 prompts printing to terminate, and detection also terminates at the same time；In monitoring process is printed, microtomography detection module
2.51 input to image mosaic module 2.8 when monitoring print procedure, by detection information, and image mosaic module 2.8 passes through longitudinal direction
Stitching algorithm, completes image mosaic by scanning result adjacent twice, the three-dimensional of product is finally completed in three-dimensional reconstruction module 2.9
Image reconstruction；Machine vision imaging module 2.52 is also by image transmitting to data memory module 2.10；In full depth Imaging: Monitoring
During, PC machine is according to setup parameter generation printing path and the motion path of microtomography detection module detection probe.
Specifically, as shown in Fig. 3 combinations Fig. 1, above-mentioned depth fractional scanning is that 8 cooperation 3 D-printing of sample detection probe is set
Standby print platform 3 or nozzle arm Z axis to movement, the scanning of setting imaging depth is realized, as shown in step 3.1；Beyond setting
Determine the stent of transversal scanning scope, coordinate the print platform 3 of 3 D-printing equipment or the movement of nozzle arm X/Y axial directions, take chess
Disc type detection mode is scanned, and realizes the scanning of setting transversal scanning area, and as shown in step 3.2, namely detecting system is first
The a certain region of detection model, then its adjacent another region detection is moved to by print platform 3 or nozzle arm, with such
Push away, until single detection is completed；On this basis, PC machine 1 is realized Multiple-Scan image mosaic and is indulged by longitudinal spliced algorithm
To superposition, the reconstruction of threedimensional model is completed, as shown in step 3.3.
Further, as shown in figure 4, the splicing of above-mentioned longitudinal spliced algorithm is：Step 4.1 is first according to be indulged
Deep fractional scanning, obtained data are by merging algorithm for images, and according to 4.2 that picture is horizontally-spliced in sequence, completion is all
The picture of single detection splices and obtains design sketch 4.3, and the data that different batches scan are stitched together according still further to step 4.4,
Finally obtain Three-dimension Reconstruction Model 4.5.
It should be added that, above-mentioned longitudinal spliced algorithm, according to the difference of image-forming principle, there is two kinds of generation sides herein
Formula, mode one are the splicings of XZ directions, and mode two is the splicing of XY directions；Similarly, simply image is from XZ directions for mode two and mode one
Splicing makes the splicing of XY directions into.
The 3 D-printing synchronization microtomography online monitoring system and method that the utility model embodiment provides, for three
Dimension prints online monitoring requirements, adds up feature with reference to 3 D-printing and printing error, propose by three-dimensional high-precision optics it is lossless into
Picture Integration ofTechnology is monitored on-line applied to 3 D-printing in 3 D-printing equipment, integrates more visual fields collaboration visual imagings, realization is beaten
The quick lateral extent positioning of print process surface monitoring.Depth by printing cured layer is segmented into picture and longitudinal automatic Mosaic is calculated
Method realizes the full depth Imaging: Monitoring of whole printing process, obtains the high-precision internal structural information of overall printing product, at the same time
It is segmented into using depth as a result, the print parameters optimization and control of depth section are realized, so as to fulfill the synchronous microbedding analysis of printing
On-line monitoring.
Specific embodiment one：
3 D-printing synchronization OCT microtomography online monitoring system specific embodiments are as follows, commonly use the imaging depth of OCT
H is 2-10mm, 10 × 10mm of areas imaging.Three representative imaging depths are chosen below：2mm、6mm、10mm.Sample
Product are hydrogel scaffold, and size is 20 × 20 × 20mm.Since the wire vent diameter of general three-dimensional printer printing is in 0.15-
Between 0.3mm, the thickness control of h0 is in layer 2-4, therefore h0 is set to 0.6mm.Since OCT image depth is different, effectively into
As depth h need to be determined according to OCT image depth.Specific experiment result see the table below：
| Imaging depth H | 2mm | 6mm | 10mm |
| Top thickness h0 | 0.6mm | 0.6mm | 0.6mm |
| Effective imaging depth h | 1mm | 4mm | 7mm |
| Product print thickness | 20h+h0 | 5h+h0 | 3h+h0 |
| Imaging results | √ | √ | √ |
Experimental result shows that the different imaging depths of OCT can reach the requirement of on-line monitoring, and the mould reconstructed
Type difference is little, all meets the requirements.Type and density of OCT image depth H and material etc. are related in above-mentioned parameter, general biology
6mm depth is recommended in class application.Top thickness h0 can be determined according to the wire vent diameter and printed material of different printers, general to recommend
The thickness of h0 is the thickness of printing layer 2-4.Effective imaging depth h need to determine according to the material of OCT image depth and printing,
Generally recommend effective imaging depth h between the 40%-70% of imaging depth H.
Specific embodiment two：
3 D-printing synchronization MPM microtomography online monitoring system embodiments are identical with OCT on-line monitorings.Its
In due to MPM it is different from the imaging depth of OCT, be below the canonical parameter of recommendation so the selection of parameter can also have any different.
| Imaging depth H | 0.5mm | 1mm | 1.5mm |
| Top thickness h0 | 0.2mm | 0.2mm | 0.2mm |
| Effective imaging depth h | 0.2mm | 0.6mm | 1mm |
| Product print thickness | 100h+h0 | 33h+h0 | 20h+h0 |
| Imaging effect | √ | √ | √ |
Specific embodiment three：
3 D-printing synchronization CM microtomography online monitoring system embodiments and OCT and MPM on-line monitoring phases
Together.Wherein due to the imaging depth reason of CM, it is more suitable for, and imaging depth is smaller, and single precision requires high occasion.
| Imaging depth H | 100um | 200um | 400um |
| Top thickness h0 | 10um | 10um | 10um |
| Effective imaging depth h | 50um | 160um | 250um |
| Product print thickness | 400h+h0 | 125h+h0 | 80h+h0 |
| Imaging results | √ | √ | √ |
In conclusion 3 D-printing synchronization microtomography online monitoring system and the side of the utility model embodiment offer
Method, 3 D-printing equipment is integrated in using three-dimensional high-precision non-destructive imaging system, integrates more visual field collaboration visual imagings, and realization is beaten
The quick lateral extent positioning of print process surface monitoring, the depth by printing cured layer is segmented into picture and longitudinal automatic Mosaic is calculated
Method realizes the full depth Imaging: Monitoring of whole printing process, obtains the high-precision internal structural information of overall printing product, at the same time
It is segmented into using depth as a result, the print parameters optimization and control of depth section are realized, so as to fulfill the synchronous microbedding analysis of printing
On-line monitoring.Effectively solve the problems, such as 3 D-printing on-line monitoring imaging depth and areas imaging, while also solve big visual field
The problem of being difficult to take into account with high accuracy.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on, should be included in the utility model
Protection domain within.
Claims (10)
- A kind of 1. 3 D-printing synchronization microtomography online monitoring system, it is characterised in that including：Print parameters it is controllable three Tie up printing device and three-dimensional optical high accuracy non-destructive imaging system；The controllable 3 D-printing equipment of the print parameters includes：PC Machine, Central Control Module, print platform, printing head, tri- axis mobile modules of X/Y/Z and nozzle carry arm, the three-dimensional optical High-precision non-destructive imaging system includes：Three-dimensional high-precision noninvasive imaging host and sample detection probe；The PC machine is used to edit analyzing three-dimensional stent model, according to demand, edits print parameters and detection parameters, sends processing Instruction, and the structure of the current printable layer of real time and on line monitoring, and caused during cumulative one or more layers printed material of covering bonding Error；The Central Control Module is used to receive Machining Instruction, and to the printing head, tri- axis mobile modules of the X/Y/Z and The nozzle carry arm is controlled；The sample detection probe carry is synchronized with the movement on the nozzle carry arm, and with the nozzle carry arm；The three-dimensional high-precision noninvasive imaging host is connected with the PC machine, is used for transmission data and is controlled the sample detection Probe completes scanning and imaging；The sample detection probe coordinates the print platform or the nozzle carry arm to be moved along X-axis/Y-axis/Z axis, completes one Secondary horizontal area scanning and the scanning of longitudinal depth, the sample detection, which is popped one's head in, at this time completes one-time detection, the printing head Continue to print, when printing certain thickness, detect again, repeat this operation, until printing terminates；After, the PC machine will be examined The data reconstruction of survey realizes full depth imaging into threedimensional model.
- 2. 3 D-printing synchronization microtomography online monitoring system according to claim 1, it is characterised in that described three The high-precision noninvasive imaging host of dimension includes：Optical coherence tomography (OCT), multi-photon micro-imaging technique (MPM) or confocal One or more combinations of microtechnic (CM) host.
- 3. 3 D-printing synchronization microtomography online monitoring system according to claim 1, it is characterised in that the sample Product detection probe includes：Machine vision imaging module and microtomography detection module；The machine vision imaging module is used for Visual field monitors, and the microtomography detection module is gathered for small range high precision image.
- 4. 3 D-printing synchronization microtomography online monitoring system according to claim 1, it is characterised in that the PC The print parameters and detection parameters of machine editor include：Three-dimensional optical high accuracy noninvasive imaging host imaging depth H, material effectively into As the top thickness h0 after depth h, printing, print thickness h+h0, subsequent detection print thickness h are detected first.
- 5. 3 D-printing synchronization microtomography online monitoring system according to claim 4, it is characterised in that described vertical Scanning to depth is effectively to be imaged depth according to the three-dimensional optical high accuracy noninvasive imaging host imaging depth H and the material Degree h is segmented.
- 6. 3 D-printing synchronization microtomography online monitoring system according to claim 1, it is characterised in that described to beat The controllable 3 D-printing equipment of print parameter includes：Towards industry 3 D-printing equipment, towards biology 3 D-printing equipment and Towards the 3 D-printing equipment of medical treatment.
- 7. the 3 D-printing synchronization microtomography online monitoring system according to any one of claim 1-6, its feature It is, the tri- axis mobile modules of X/Y/Z can be replaced three-axis moving module.
- 8. the 3 D-printing synchronization microtomography online monitoring system according to any one of claim 1-6, its feature It is, the tri- axis mobile modules of X/Y/Z can be replaced sixdegree-of-freedom simulation.
- 9. 3 D-printing synchronization microtomography online monitoring system according to claim 1, it is characterised in that described complete Depth imaging is that the stent model for designing modelling module imports three-dimensional printer, and sets mould in printing, detection parameters Block sets print parameters；In whole printing process, the microtomography detection module in the sample detection probe is scanned detection in real time, Machine vision imaging module real time imagery, prints and detects in whole process alternately；After often completing single pass, a depth fractional scanning is realized, monitoring judgment module judges whether that needs continue to print；Such as Printing is not completed, it is necessary to continue to print, and printing adjustment information feeds back to printer print module, lasting printing；As printed Completion need not print again, terminate reminding module prompting printing and terminate, detection also terminates at the same time；In monitoring process is printed, detection information is inputed to image by microtomography detection module when monitoring print procedure Scanning result adjacent twice is completed image mosaic, is finally existed by concatenation module, image mosaic module by longitudinal spliced algorithm Three-dimensional reconstruction module completes the three-dimensional image reconstruction of product；Image transmitting is also stored mould by machine vision imaging module to data Block；In full depth imaging process, the PC machine is according to setup parameter generation printing path and the inspection of microtomography detection module The motion path of probing head.
- 10. 3 D-printing synchronization microtomography online monitoring system according to claim 9, it is characterised in that described Depth fractional scanning be sample detection probe coordinate print platform or the nozzle arm Z axis of 3 D-printing equipment to fortune It is dynamic, realize the scanning of setting imaging depth；Beyond the stent of setting transversal scanning scope, coordinate print platform or the nozzle arm X/Y of 3 D-printing equipment axial Movement, take checkerboard type detection mode to be scanned, realize setting transversal scanning area scanning；On this basis, the PC machine realizes that Multiple-Scan image mosaic and longitudinal direction are superimposed, completes three by longitudinal spliced algorithm The reconstruction of dimension module.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664510A (en) * | 2018-12-26 | 2019-04-23 | 长江大学 | A kind of oil exploitation stratum reservoir 3D modeling print system |
| CN110976861A (en) * | 2019-11-29 | 2020-04-10 | 佛山科学技术学院 | Metal 3D printing quality intelligent online monitoring system based on machine vision |
| CN113942223A (en) * | 2021-11-05 | 2022-01-18 | 武汉市工程科学技术研究院 | 3D printer |
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2017
- 2017-09-21 CN CN201721214068.5U patent/CN207345088U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664510A (en) * | 2018-12-26 | 2019-04-23 | 长江大学 | A kind of oil exploitation stratum reservoir 3D modeling print system |
| CN110976861A (en) * | 2019-11-29 | 2020-04-10 | 佛山科学技术学院 | Metal 3D printing quality intelligent online monitoring system based on machine vision |
| CN113942223A (en) * | 2021-11-05 | 2022-01-18 | 武汉市工程科学技术研究院 | 3D printer |
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