CN104400998B - A kind of 3D based on infrared spectrum analysis prints detection method - Google Patents
A kind of 3D based on infrared spectrum analysis prints detection method Download PDFInfo
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Abstract
The invention discloses a kind of 3D and print detection method, whether the surfacing printed for the real-time current 3D of detection is consistent with design sample.Described 3D printer includes 3D printer body, moveable infrared spectrometric analyzer (comprising infrared total reflection adnexa)；It is furnished with correction software simultaneously, by infrared spectrum and the standard spectrum of design sample of comparison and detection point, carries out correcting or select again to print.The present invention can monitor the accuracy of printing objects material therefor in real time, reduces the defect rate printed, and reduces unnecessary spillage of material, saves the time.
Description
Technical field
The present invention relates to a kind of 3D based on infrared spectrum analysis and print detection method, be applied to 3D field.
Background technology
3D printing technique, is a kind of new manufacture risen, academicly also known as " add and manufacture " technology.It is based on three-dimensional CAD model data, by the way of increasing material and successively manufacturing, uses and directly manufactures the manufacture method with corresponding mathematics model on all four three dimensional physical physical model.All printing techniques, technology, device class and the application that " quickly manufacturing " of " rapid prototyping " and full production cycle that 3D printing technique content covers product life cycle front end is correlated with.
3D prints the technology related to and includes that CAD modeling, measurement, interface software, numerical control, precision optical machinery, laser, material etc. are multi-disciplinary integrated.3D prints can be divided into block materials, liquid material and dusty material etc. by material.It has numerical DC speed, dimensionality reduction manufacture, piles up manufacture, directly manufacture, the feature quickly manufactured and advantage.
3D prints the working method being to use similar inkjet printer head.This technique is similar with selective laser sintering, and laser sintered process simply changes into shower nozzle bonding, and grating scanner changes binding agent injector head into.3D printing technique develops the progress of product technology, manufacturing technology and the management technique brought makes enterprise possess the ability of fast responding market demand.The the most ripe of 3D printing technique will promote new material technology and Intelligent Manufacturing Technology to realize big leap.
The application of 3D printing technique is more and more extensive, and the printing from homogenous materials such as model in early days, buildings expands to the composite printing of the multiple materials such as food, electronics, biology.And 3D printing is technology costly, print manufacturing cost higher, if any one link is made mistakes in the composite printing of multiple material, all can cause the substandard products that printed product occurs, thus increase the cost of entirety.Detected in real time by this patent current 3D print surfacing whether be consistent with design sample, utilize moveable infrared spectrometric analyzer to monitor in real time, can thus improve 3D and print quality and the success rate of printed product non-defective unit of 3D solid.
Summary of the invention
The present invention provides a kind of 3D based on infrared spectrum analysis to print detection method, contributes to the self-correction of 3D print procedure, ensures printing effect.
Technical program of the present invention lies in:
A kind of 3D based on infrared spectrum analysis prints detection method, it is characterised in that carry out as follows:
1) system is provided, this system includes the 3D printer with infrared spectrum analysis detection, error correction system, also includes that 3D printer body, described 3D printer body include 3D printhead, stamp pad, prints raw material box, 3D printer mechanical component, print control assembly, circuitry；Printer is furnished with infrared spectrum analysis device, and described infrared spectrum analysis device is furnished with total reflection adnexa, and the computer that described 3D printer connects has ultrared spectrum storehouse；3D printer also includes cut cutter, can modify the place of misprint in range of error.；
2) by infrared spectrum analysis device, the spectral information of each printed material is stored in ultrared spectrum storehouse；
3) design prints drawing；
4) module is divided according to printed material；
5) specification error allowed band；
6) when printing beginning, utilize infrared spectrum analysis device that the printed material of each module is carried out spectrum analysis, the data collected are passed to computer, form spectrogram；
7) spectrogram obtained is contrasted with the spectra collection of storage in computer ultrared spectrum storehouse, it is judged that institute's printed material is the most correct；
8) when the judged result of step 7 is correct, it is judged that print and whether complete, if being not fully complete, continuing the printing of next printable layer, and continuing to gather spectral information and spectrogram comparison；If completing print procedure, then terminate to print；
9) judged result of step 7 is incorrect, it is judged that whether range of error exceedes setting value；
10) as exceeded, then judge to belong to error of the first kind or the second mistake；As not less than time, then continue the printing of next printable layer, and continue to gather spectral information and spectrogram comparison；
11) when belonging to error of the first kind, strike off error section or again print；When belonging to the second mistake, change program fills up non-printing portion.
It is an advantage of the current invention that:
The present invention adds the detection module of 3D printed material in the feed block of existing 3D printer, it is possible to reduce defective due to the product that prints containing impurity and causing in printed material, can improve the qualification rate of product.
Accompanying drawing explanation
Fig. 1 is the flow chart of the embodiment of the present invention.
Fig. 2 is the reparation flow chart in the embodiment of the present invention.
Fig. 3 is the hardware system of the embodiment of the present invention.
Detailed description of the invention
For the features described above of the present invention and advantage can be become apparent, special embodiment below, it is described in detail below in conjunction with accompanying drawing.
Hereinafter by specific embodiment, the present invention will be described in further detail.Refering to Fig. 1 to Fig. 3, the present invention relates to a kind of 3D based on infrared spectrum analysis and print detection method, carry out as follows:
1) system is provided, this system includes the 3D printer with infrared spectrum analysis detection, error correction system, also includes that 3D printer body, described 3D printer body include 3D printhead 1, stamp pad 2, prints raw material box 3,3D printer mechanical component, print control assembly, circuitry；Printer is furnished with infrared spectrum analysis device 4, and described infrared spectrum analysis device is furnished with total reflection adnexa, and the computer 5 that described 3D printer connects has ultrared spectrum storehouse；3D printer also includes cut cutter 6, can modify the place of misprint, as shown in Figure 3 in range of error；
2) by infrared spectrum analysis device, the spectral information of each printed material is stored in ultrared spectrum storehouse；
3) design prints drawing；
4) module is divided according to printed material
5) specification error allowed band
6) when printing beginning, utilize infrared spectrum analysis device that printed material is carried out spectrum analysis, the data collected are passed to computer, form spectrogram；
7) spectrogram obtained is contrasted with the spectra collection of storage in computer ultrared spectrum storehouse, it is judged that institute's printed material is the most correct；
8) when the judged result of step 7 is correct, it is judged that print and whether complete, if being not fully complete, continuing the printing of next printable layer, and continuing to gather spectral information and spectrogram comparison；If completing print procedure, then terminate to print；
9) judged result of step 7 is incorrect, it is judged that whether range of error exceedes setting value；
10) as exceeded, then judge to belong to error of the first kind or the second mistake；As not less than time, then continue the printing of next printable layer, and continue to gather spectral information and spectrogram comparison；
11) when belonging to error of the first kind, strike off error section or again print；When belonging to the second mistake, change program fills up non-printing portion.
This infrared spectrum analysis device is installed on 3D printer inwall, can comprehensive (top to bottom, left and right, front and rear), mobile.The material therefor that control, mobile infrared spectrum analysis device detection detect 3D printing objects in print procedure is the most correct.
Michelson's interferometer is had in this infrared spectrum analysis device.The kind of infrared spectrometric analyzer device has: 1. prism and grating spectrograph.Belonging to color dispersion-type, its monochromator is prism or grating, belongs to single channel and measures.2. Fourier transform infrared spectrometer.It is non-color dispersion-type, and its core is a double beam interferometer.When the index glass in instrument moves, the optical path difference through between two bundle coherent lights of interferometer just changes, and the light intensity measured by detector changes the most therewith, thus obtains interferogram.After the mathematical operation of Fourier transformation, so that it may obtain the spectrum of incident illumination.The advantage of this instrument: 1. multi-channel measurement, makes signal to noise ratio improve.2. luminous flux is high, improves the sensitivity of instrument.3. the degree of accuracy of wave number value is up to 0.01 centimetre.4. increase index glass displacement, resolving power can be made to improve.5. service band can extend to a millimeter district from visual field, it is possible to achieve the mensuration of far-infrared spectrum.
This infrared spectrum analysis device is with total reflection adnexa.Utilize Technique of Attenuated Total Reflectance need to spend the inspection of dozens of minutes in the past, can in seconds complete, substantially increase inspection speed；Easy to operate
.Test result indicate that, the method is easy to operate, it is highly sensitive to measure, available high-quality infrared spectrum.The method has non-destructive to measuring sample, it is not necessary to the advantages such as pretreatment.
This 3D printer keeps being connected in real time with control computer in print procedure.Having common standard IR spectrogram collection (such as: Sadtler ultrared spectrum atlas, Coblentz learn spectrogram collection, API spectrum atlas etc.) in this computer, the spectrum being used for being gathered with said apparatus contrasts, and the material used by verification printing is the most correct.
When finding mistake, it is judged that whether the area of mistake is in allowed band (this permission is designed according to demands of individuals in design drawing), if continuing in the range of to print, if beyond allowed band, it is judged that the kind of mistake: 1, use mistake material；2, the position of defined does not prints.In the case of mistake 1, can select as the case may be to continue to print, or time-out strikes off error section and continues to print, or terminate printing；In the case of mistake 2, changeable program fills up unprinted place.
Specific implementation process is as follows:
In print procedure, whenever printhead more conversion materials, infrared spectrum analysis device starts, go out infrared emission position according to computed in software, and move into place and send infrared light, utilize Technique of Attenuated Total Reflectance, the data collected are passed to computer, form the spectra collection contrast stored in spectrogram, with computer, it is judged that institute's printed material is the most correct.When finding mistake, centered by test point, taking up an official post and take at 3 and detect setting the edge of the circle of radius, if having mistake does not occurs at 2, illustrating in error allowed band.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent and modification, all should belong to the covering scope of the present invention.
Claims (1)
1. a 3D based on infrared spectrum analysis prints detection method, it is characterised in that carry out as follows:
1) providing a system, this system includes the 3D printer with infrared spectrum analysis detection, error correction system, also includes 3D printer body, described 3D
Printer body includes 3D printhead (1), stamp pad (2), prints raw material box (3), 3D printer mechanical component, print control assembly, circuitry；Printer is furnished with infrared spectrum analysis device (4), and described infrared spectrum analysis device is furnished with total reflection adnexa, and the computer (5) that described 3D printer connects has ultrared spectrum storehouse；3D printer also includes cut cutter (6), can modify the place of misprint in range of error；
2) by the spectral information of each printed material being stored in ultrared spectrum storehouse, and the computer (5) being connected with printer is imported；
3) design prints drawing；
4) module is divided according to printed material；
5) specification error allowed band；
6) when printing beginning, utilize infrared spectrum analysis device (4) that the printed material of each module is carried out spectrum analysis, the data collected are passed to computer, form spectrogram；
7) spectrogram obtained is contrasted with the spectra collection of storage in computer (5) ultrared spectrum storehouse, it is judged that institute's printed material is the most correct；
8) when the judged result of step 7 is correct, it is judged that print and whether complete, if being not fully complete, continuing the printing of next printable layer, and continuing to gather spectral information and spectrogram comparison；If completing print procedure, then terminate to print；
9) judged result of step 7 is incorrect, it is judged that whether range of error exceedes setting value；
10) as exceeded, then judge to belong to use mistake material or the position of defined does not prints；As not less than time, then continue the printing of next printable layer, and continue to gather spectral information and spectrogram comparison；
11) when belonging to use mistake material, strike off error section or again print；When the position belonging to defined does not prints, change program fills up non-printing portion.
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