CN108278966A - SLA precision calibrations system and scaling method - Google Patents
SLA precision calibrations system and scaling method Download PDFInfo
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- CN108278966A CN108278966A CN201710975632.3A CN201710975632A CN108278966A CN 108278966 A CN108278966 A CN 108278966A CN 201710975632 A CN201710975632 A CN 201710975632A CN 108278966 A CN108278966 A CN 108278966A
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- sla
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
Abstract
The present invention relates to a kind of SLA precision calibrations systems, are used for SLA precision calibrations.The SLA precision calibration systems include：SLA precision calibration plates comprising stiffener plate and light-sensitive paper, the light-sensitive paper is sticked in the upper surface of the stiffener plate, for when being scanned by laser beam, pattern to be demarcated in display；Laser scanner, for generating laser beam comprising bi-motor scanning module, the laser beam are irradiated to the SLA precision calibrations plate by the bi-motor scanning module；Image acquiring device, for obtaining the calibration pattern shown on the light-sensitive paper；Control system adjusts the bit of motor for carrying out comparison correction according to pre-stored master pattern and the calibration pattern, without artificially carrying out laser movement, precision calibration the degree of automation is improved, nominal time and cost are saved, improves precision calibration efficiency.
Description
Technical field
The present invention relates to precision calibration systems in 3D printing technique, more particularly to a kind of SLA precision calibrations system and mark
Determine method.
Background technology
Stereolithography apparatus method (Stereo Lithography Appearance, SLA) is to be suggested simultaneously business earliest
The rapid shaping technique for changing application, have passed through nearly development in 20 years, which has become the 3D printing technique being most widely used.
It focuses on photo-curing material surface with the laser of specific wavelength and intensity, is allowed to by putting to line, complete by line to face consecutive solidification
At the drawing performance of a level, then lifting platform moves the height of a synusia in vertical direction, another level of resolidification,
It is layering in this way and constitutes a 3D solid.The course of work of SLA systems is as follows：Three-dimensional entity model is designed first, profit
Model is subjected to slicing treatment with discrete program, designs scan path, the data of generation will accurately control laser scanner and liter
The movement of platform is dropped；The scan module that laser beam is controlled by numerical control device is irradiated to liquid photosensitive by the scan path of design
Resin surface, after making one layer of resin solidification in the specific region of surface, as soon as after layer completion of processing, generate part one cuts
Face；Then lifting platform declines certain distance, covers another layer of liquid resin on cured layer, then carry out second layer scanning, and second is solid
Change layer to be bonded in securely on previous cured layer, is formed by stacking three-dimensional prototype from level to level in this way.By prototype after being taken out in resin,
Finally cured, then the 3D solid required through polishing, plating, spray painting or coloring treatment.
Scan module generally use bi-motor scan module in SLA systems, is arranged in the Path of Convergent Rays of laser beam.
There are two kinds of defects for this bi-motor scan module：First, focal spot scanning track constitutes spherical surface image field, it is misaligned with working face,
The referred to as focusing error of system or Z axis error；Second is that due to the bi-motor front and back design feature arranged in the optical path, it will be in X-axis
There is " pincushion " distortion in direction.In addition, there are certain distortion for optical lens itself.
To overcome drawbacks described above, improve the precision of the 3D solid of printing, be usually provided with a SLA precision calibrations system into
Row precision calibration, in the calibration system, traditional scaling board is to be carved by multiple regularly arranged cross marks on an aluminium sheet
The pattern of will point composition.In calibration, which is caused to be scanned in liquid photosensitive resin surface, often scanning arrives this
When drumheads point, it is recorded, by the information of record, the bit of motor is adjusted, to realize precision calibration.
However, needing artificial progress laser movement when being demarcated using above-mentioned calibration system, manual operation is increased so that behaviour
It is elongated to make the time, and the degree of automation reduces, and substantially reduces calibration efficiency.
Invention content
In view of this, it is necessary to provide a kind of SLA precision calibrations system and scaling method, manual operation can be saved,
Calibration the degree of automation is improved, calibration efficiency is improved.
A kind of SLA precision calibrations system is used for SLA precision calibrations, including：
SLA precision calibration plates, for when being scanned by laser beam, pattern to be demarcated in display；
Laser scanner, for generating laser beam and being irradiated to the SLA precision calibrations plate；
Image acquiring device, for obtaining the calibration pattern shown on the SLA precision calibrations plate；
Control system, for carrying out comparison correction, adjustment electricity according to pre-stored master pattern and the calibration pattern
The bit of machine.
The SLA precision calibrations plate includes stiffener plate and light-sensitive paper, the light-sensitive paper patch in one of the embodiments,
It is located at the upper surface of the stiffener plate, for when being scanned by laser beam, pattern to be demarcated in display.
In one of the embodiments, the stiffener plate lower surface be arranged on liquid photosensitive resin, and with it is described
The horizontal plane keeping parallelism of liquid photosensitive resin.
The SLA precision calibrations plate includes at least three levelling mechanisms, the levelling mechanism in one of the embodiments,
Including leveling serew and screw hole, the leveling serew is matched with the screw hole, and the screw hole is set in the stiffener plate.
Described image acquisition device includes photographic device in one of the embodiments,.
The photographic device is the camera with the control system integration in one of the embodiments,.
Described image acquisition device is to the control by cable network or wireless network in one of the embodiments,
System transmission data.
A kind of scaling method using the SLA precision calibration systems described in any of the above-described embodiment includes the following steps：
It controls laser scanner and emits laser beam to SLA precision calibration plates, until the shape on the SLA precision calibrations plate
At calibration pattern；
Control image acquiring device obtains the calibration pattern shown on the SLA precision calibrations plate, and by the calibration maps
Case is sent to control system；
Comparison correction, adjustment electricity are carried out according to pre-stored master pattern in the control system and the calibration pattern
The bit of machine.
The control image acquiring device obtains the mark that the SLA precision calibrations plate is shown in one of the embodiments,
Determine pattern, and the calibration maps case is sent to control system, including：
Control photographic device shoots the calibration pattern that the SLA precision calibrations plate is shown, and the calibration maps case is sent
To the control system.
It is described according to pre-stored master pattern in control system and the calibration pattern in one of the embodiments,
Comparison correction is carried out, including：
Determine the index point position of the composition calibration pattern；
The index point position of the calibration pattern and the index point position of the master pattern are compared.
Compared to the prior art, SLA precision calibrations system provided by the invention by SLA precision calibration plates by being set as rigid
Light-sensitive paper is attached at the upper surface of stiffener plate by the combination of mild-natured plate and light-sensitive paper, when the laser light that laser scanner generates
Beam is irradiated on light-sensitive paper, and light-sensitive paper can show that the calibration maps case got is sent to by calibration pattern, image acquiring device
Control system so that control system is corrected according to pre-stored master pattern and the calibration pattern correspondance received, adjustment electricity
The bit of machine, without artificially carrying out laser movement, raising precision calibration the degree of automation saves nominal time and cost,
Improve precision calibration efficiency.
Description of the drawings
The drawings herein are incorporated into the specification and a part for constitution instruction, shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of SLA precision calibrations system schematic shown in an exemplary embodiment of the invention；
Fig. 2 is a kind of SLA precision calibrations plate schematic diagram shown in an exemplary embodiment of the invention；
Fig. 3 is a kind of image processing apparatus structural schematic diagram shown in an exemplary embodiment of the invention；
Fig. 4 show a kind of master pattern schematic diagram shown in an exemplary embodiment of the invention；
Fig. 5 show another master pattern schematic diagram shown in an exemplary embodiment of the invention；
Fig. 6 is a kind of levelling mechanism schematic diagram shown in an exemplary embodiment of the invention；
Fig. 7 is a kind of leveling serew structural schematic diagram shown in an exemplary embodiment of the invention；
Fig. 8 is a kind of SLA precision calibrations method flow diagram shown in an exemplary embodiment of the invention；
Fig. 9 is another SLA precision calibrations method flow diagram shown in an exemplary embodiment of the invention.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
Fig. 1 be shown in an of the invention exemplary embodiment a kind of SLA (Stereo Lithography Appearance,
Three-dimensional Stereolithography) precision calibration system schematic, as shown in Figure 1, the SLA precision calibrations system 100 of the present invention includes：
Laser scanner 10, SLA precision calibrations plate 20, image acquiring device 30 and control system 40.
For the laser scanner 10 for generating laser beam, which is irradiated to SLA precision calibrations plate 20 or liquid
Light-sensitive paper resin 50.Specifically, the laser scanner 10 includes bi-motor scanning module, generated laser beam passes through this
Bi-motor scanning module is irradiated to the SLA precision calibrations plate 20.
The SLA precision calibrations plate 20 is used for when being scanned by laser beam, display calibration pattern.Preferably, described
The structural schematic diagram of SLA precision calibrations plate 20 is as shown in Fig. 2, SLA precision calibrations plate 20 includes light-sensitive paper 21 and stiffener plate 22.
The light-sensitive paper 21 is arranged in the upper surface of stiffener plate 22, when light-sensitive paper 21 is scanned by laser beam, can show mark
Determine pattern.The light-sensitive paper 21 is a kind of special paper invented according to physical optics principle, when it is when by laser irradiation,
It can show pattern or index point.The type or preparation method of the light-sensitive paper 21 are unlimited, any to be shown by laser scanning
The paper of diagram case all can serve as the light-sensitive paper 21 in the present embodiment, and the present invention is to this and is not limited, in addition, the present invention makes
Light-sensitive paper is cheap, and buying is convenient, cost-effective.
The stiffener plate 22 is a kind of hard plate, for carrying the light-sensitive paper 21, even if multiple stiffener plates 22
Stacking the when of placing will not deform, the stiffener plate 22 can be metallic plate, ceramic wafer either plastic plate etc. other
Stiffener plate, the present invention is to this and is not limited.Further, the stiffener plate 22 is aluminium sheet, so that described rigid
Mild-natured plate 22 has many advantages, such as that quality is light, hardness is moderate and is easily worked.
In three-dimensional Stereolithography technology, liquid photosensitive paper resin is formed in mould raw material, therefore, when SLA essences
There are when liquid photosensitive resin in the fixed environment of scale, in calibration, the SLA precision calibration plates of the present invention can be placed on liquid
On state photosensitive resin 50, i.e., so that stiffener plate 22 lower surface be arranged on liquid photosensitive resin 50, and with the liquid photosensitive
The horizontal plane keeping parallelism of resin 50.
Described image acquisition device 30, for obtaining the calibration pattern shown on light-sensitive paper 21.Described image acquisition device
30 structure is unlimited, obtains the calibration pattern as long as can meet and the calibration maps case is sent to control system.Institute
It states image acquiring device 30 and may include that photographic device, such as digital camera, video camera, mobile phone etc. can complete the dress of Image Acquisition
It sets within shall fall within the protection scope of the present invention, the present invention is to this and is not limited.
The calibration pattern got can be transmitted to control by described image acquisition device 30 by cable network or wireless network
System 40 processed, such as it can be transmitted to control system 40 by pattern is demarcated by data line, the printer with WIFI function can
Pattern is demarcated by wireless network transmissions, the mobile device with Bluetooth function can demarcate pattern by Bluetooth signal transmission,
Mobile phone can also demarcate pattern by 4G network transmissions, transmit calibration pattern from image acquiring device 30 it is of course possible to realize
To control system 40 communication mode all within the scope of protection of the invention, the present invention is to this and is not limited.
Preferably, described image acquisition device is photographic device, for obtaining calibration pattern, is then passed the data of storage
Control system is sent to be demarcated.
The control system 40 is adjusted for carrying out comparison correction according to pre-stored master pattern and calibration pattern
The bit of motor.Specifically, the control system 40 receives the calibration pattern of the transmission of image acquiring device 30, determines composition
The position for demarcating each index point of pattern, the position and the index point for comparing the index point of composition calibration maps case one by one correspond to
The deviation between the position of the index point of master pattern is formed, correction file is aggregated into and is stored in control system 40.Citing
For, it is illustrated in figure 4 a kind of master pattern schematic diagram shown in an of the invention exemplary embodiment, as shown in figure 4, can be by the
The index point that eight rows the 7th row are drawn a circle draws two orthogonal straight lines respectively as coordinate origin on the basis of origin, wherein
As X-axis, fourth line in figure the 4th is then arranged the index point drawn a circle and is denoted as A horizontal direction by vertical direction as Y-axis1(x1, y1),
By in the calibration pattern shown on light-sensitive paper 21 with point A1(x1, y1) corresponding point is denoted as B1(a1, b1), then can calculate
Go out A1(x1, y1) and B1(a1, b1) between position relationship K1, pass through position relationship K1It can be by point A1(x1, y1) be calibrated to a little
B1(a1, b1), can by translation, scaling or other the methods of linearly or nonlinearly convert calibration.In the same way,
It one by one will be between the position of the index point in the index point position and master pattern in the calibration pattern that shown on light-sensitive paper 21
Deviation is recorded, and correction file can be aggregated to form.Certainly, the pattern of master pattern can be it is any it is well-regulated, be easy to
The pattern of identification, such as the chessboard grid pattern in Fig. 5, the present invention is to this and is not limited.
In another embodiment, SLA precision calibrations plate 20 further includes at least three levelling mechanisms 60, for adjusting SLA
The horizontal plane of precision calibration plate.Wherein, the levelling mechanism 60 is set in stiffener plate, due at least three levelling mechanisms 60
A plane is may be constructed, when SLA precision calibration plates include at least three levelling mechanisms 60, it is ensured that SLA precision calibrations
Plate is in approximately the same plane, and certainly, the quantity of above-mentioned levelling mechanism 60 may be four, five or six etc., the present invention couple
This is simultaneously not limited.For example, as shown in fig. 6, Fig. 6 is a kind of levelling mechanism shown in an exemplary embodiment of the invention
Schematic diagram, there are four levelling mechanisms 60 for setting in the stiffener plate 22 in figure, and above-mentioned levelling mechanism 60 may include 61 He of screw hole
Leveling serew 62, screw hole 61 are respectively arranged at four angles of stiffener plate 22, and screw hole 61 is matched with leveling serew 62.Leveling spiral shell
The structural schematic diagram of silk 62 refers to Fig. 7, as shown in fig. 7, leveling serew 62 includes head 621, bar portion 622, leveling knob 623
With the screw 624 for being provided with equidistant screw thread, wherein bar portion 622 is set on screw 624, can be by rotating leveling knob 623
Change the length that screw 624 is inserted into bar portion 622, to realize leveling, specifically, for example, when needing the levelling mechanism 60
Height when reducing, leveling knob 623 is rotated clockwise so that 624 retraction bar portion 622 of segment screw, when needing the leveling machine
When the height of structure increases, then rotation leveling knob makes segment screw 624 stretch out bar portion 622 counterclockwise.
Corresponding with above-mentioned SLA precision calibrations system, the present invention also provides a kind of SLA precision calibrations methods, are applied to
In SLA precision calibration systems, include the following steps as shown in Figure 8：
In step 801, control laser scanner emits laser beam to SLA precision calibration plates, until in SLA precision marks
Calibration pattern is formed on fixed board.
In step 802, control image acquiring device obtains the calibration pattern that shows on SLA precision calibration plates, and by institute
It states calibration maps case and is sent to control system.
The calibration pattern shown on photographic device shooting SLA precision calibration plates can be controlled, certainly, photographic device does not limit to
In the equipment that shooting photo may be implemented in digital camera, video camera, mobile phone etc..
In step 803, carried out pair according to pre-stored master pattern in the control system and the calibration pattern
Than correction, the bit of motor is adjusted.
In this step, it may be determined that the index point position of composition calibration pattern；By the mark point of the calibration pattern
It sets and is compared with the index point position of the master pattern, one by one the position of the index point of analysis composition calibration maps case and the mark
Will point corresponds to the deviation between the position of the index point of composition master pattern, correction file is aggregated into, according to correction file tune
The bit of whole motor.
Fig. 9 is referred to, Fig. 9 is another SLA precision calibrations method shown in an exemplary embodiment of the invention, is applied to
In SLA precision calibration systems, include the following steps：
In step 901, control laser scanner emits laser beam to SLA precision calibration plates, until in SLA essences
Calibration pattern is formed on light-sensitive paper on scale fixed board.
In step 902, control image acquiring device obtains the calibration pattern shown on the light-sensitive paper, and by calibration maps
Case is sent to control system.
In this step, the calibration pattern shown on copier scan light-sensitive paper can be controlled, camera shooting dress can also be controlled
The calibration pattern that shows on shooting light-sensitive paper is set, certainly, photographic device is not limited to digital camera, video camera, mobile phone etc. can be with
The equipment for realizing shooting photo.
In step 903, comparison correction is carried out according to pre-stored master pattern in control system and calibration pattern, adjusted
The bit of whole motor.
In this step, it may be determined that the index point position of composition calibration pattern；By the mark point of the calibration pattern
It sets and is compared with the index point position of the master pattern, one by one the position of the index point of analysis composition calibration maps case and the mark
Will point corresponds to the deviation between the position of the index point of composition master pattern, correction file is aggregated into, according to correction file tune
The bit of whole motor.
For the SLA precision calibration system and methods that the present invention is further explained, given with reference to specific embodiment
It is bright.
Fig. 1 is referred to, Fig. 1 is SLA precision calibrations system schematic of the present invention.As above it gives an account of and continues, SLA precision calibration systems
Including laser scanner 10, SLA precision calibrations plate 20, image acquiring device 30 and control system 40.Specific demarcating steps are such as
Under：
SLA precision calibration plates are installed.Before carrying out SLA precision calibrations, it is necessary first to be carried out to SLA precision calibrations plate 20
Installation, as shown in Fig. 2, SLA precision calibrations plate 20 includes light-sensitive paper 21 and stiffener plate 22, light-sensitive paper 21 is arranged in stiffener plate
22 upper surface, stiffener plate 22 are arranged on liquid photosensitive resin 50, and keep flat with the horizontal plane of liquid photosensitive resin 50
Row can use levelling mechanism as shown in fig. 6-7 to adjust the SLA precision mark during installing SLA precision calibration plates
The height of fixed board can also use levelling mechanism that SLA precision calibration plates is made to be in horizontality.
In another embodiment, above-mentioned light-sensitive paper 21 can be pasted onto to the upper surface of above-mentioned stiffener plate 22, pasted
Light-sensitive paper can use glue or other easy removal, not acrid stickums, it is preferable that can use similar two-sided
The bonding method of glue makes light-sensitive paper be bonded the stiffener plate completely, and the present invention is to this and is not limited.
Certainly, the present invention is unlimited for the fixed form of light-sensitive paper 21 and stiffener plate 22, any to consolidate light-sensitive paper
The fixed form being scheduled in stiffener plate belongs within protection scope of the present invention.
Laser scanner emits laser beam.Control system 40 controls laser scanner 10 according to control is stored in advance in
Master pattern in system 40 emits laser beam, to form calibration pattern on the light-sensitive paper of SLA precision calibrations plate 20.But
Calibration pattern on the light-sensitive paper of SLA precision calibrations plate 20 is to send out the figure shown after laser irradiation by bi-motor module
Case, and bi-motor is due to the front and back design feature arranged in the optical path, it may appear that " pincushion " distorts.So being shown on light-sensitive paper 21
The calibration pattern gone out is that the distortion patterns after " pillow-type " distortion occur for master pattern.
Image acquiring device obtains image.Image acquiring device 30 obtains the calibration pattern and transmits the calibration pattern
Into control system 40.It is appreciated that the distortion patterns displayed on the calibration pattern that is, light-sensitive paper 21 of the acquisition.It should
Calibration pattern can use digital camera, video camera and mobile phone etc. that can complete to shoot, and by the calibration of shooting pattern/distortion
Pattern passes through in cable network or wireless network transmissions to control system 40.
Control system carries out deviation calculating.Control system 40 determines the position of each index point of composition calibration pattern, than
Correspond between the position for the index point for forming master pattern compared with the position of the index point of composition calibration pattern and the index point
Deviation is aggregated into correction file and is stored in control system 40, to adjust the bit of motor according to correction file.
In SLA precision calibrations system provided by the invention and scaling method, by the way that SLA precision calibration plates are set as rigid
The combination of mild-natured plate and light-sensitive paper, and be irradiated on light-sensitive paper by laser beam and show calibration pattern.There is image to obtain dress
Set the calibration maps case that will be got and be sent to control system so that control system according to pre-stored master pattern with receive
Calibration pattern correspondance correction, adjust the bit of motor.The SLA precision calibrations system has compared to traditional calibration system
Following advantage：1, calibration pattern is obtained without being carved on SLA precision calibrations plate or stiffener plate, so that described
Scaling board can be recycled for multiple times, and cause scaling board to damage without the calibration damage patterns carved by scaling board；2, because
It is carved without precision, goes back escapable cost, reduce cost；3, it is not necessarily to artificial progress laser movement, improves precision calibration automation
Degree saves nominal time and cost, improves precision calibration efficiency.4, filming apparatus only needs lower cost camera or similar
The mobile phone etc. that can be taken pictures, coverage is big, cheap, substantially reduces the cost of SLA precision calibration systems.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of SLA precision calibrations system is used for SLA precision calibrations, which is characterized in that including：
SLA precision calibration plates, for when being scanned by laser beam, pattern to be demarcated in display；
Laser scanner, for generating laser beam and being irradiated to the SLA precision calibrations plate；
Image acquiring device, for obtaining the calibration pattern shown on the SLA precision calibrations plate；
Control system adjusts motor for carrying out comparison correction according to pre-stored master pattern and the calibration pattern
Bit.
2. SLA precision calibrations system according to claim 1, which is characterized in that the SLA precision calibrations plate includes rigidity
Tablet and light-sensitive paper, the light-sensitive paper is sticked in the upper surface of the stiffener plate, for when being scanned by laser beam, showing
Pattern is determined in indicating.
3. SLA precision calibrations system according to claim 2, which is characterized in that the lower surface of the stiffener plate is arranged
On liquid photosensitive resin, and with the horizontal plane keeping parallelism of the liquid photosensitive resin.
4. SLA precision calibrations system according to claim 2, which is characterized in that the SLA precision calibrations plate includes at least
Three levelling mechanisms, the levelling mechanism include leveling serew and screw hole, and the leveling serew is matched with the screw hole, described
Screw hole is set in the stiffener plate.
5. SLA precision calibrations system according to claim 1, which is characterized in that described image acquisition device includes camera shooting
Device.
6. SLA precision calibrations system according to claim 5, which is characterized in that the photographic device be and the control
The camera of the system integration.
7. SLA precision calibrations system according to claim 1, which is characterized in that described image acquisition device passes through wired
Network or wireless network are to the control system transmission data.
8. a kind of scaling method using any one of claim 1 to the 7 SLA precision calibrations system, which is characterized in that including
Following steps：
It controls laser scanner and emits laser beam to SLA precision calibration plates, until forming mark on the SLA precision calibrations plate
Determine pattern；
Control image acquiring device obtains the calibration pattern shown on the SLA precision calibrations plate, and by the calibration maps crime
It send to control system；
Comparison correction is carried out according to pre-stored master pattern in the control system and the calibration pattern, adjusts motor
Bit.
9. scaling method according to claim 8, which is characterized in that the control image acquiring device obtains the SLA
The calibration pattern that precision calibration plate is shown, and the calibration maps case is sent to control system, including：
Control photographic device scans the calibration pattern that the SLA precision calibrations plate is shown, and the calibration maps case is sent to institute
State control system.
10. scaling method according to claim 8, which is characterized in that described according to pre-stored mark in control system
Quasi-mode type carries out comparison correction with the calibration pattern, including：
Determine the index point position of the composition calibration pattern；
The index point position of the calibration pattern and the index point position of the master pattern are compared.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899966A (en) * | 2019-11-07 | 2020-03-24 | 渭南领智三维科技有限公司 | Calibration method, device and system of laser scanning rapid prototyping equipment |
| CN112904314A (en) * | 2019-11-19 | 2021-06-04 | 郑州宇通客车股份有限公司 | Laser radar calibration system and calibration board |
| CN114228153A (en) * | 2021-10-28 | 2022-03-25 | 上海莘临科技发展有限公司 | Double-laser-head calibration method |
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| CN112904314B (en) * | 2019-11-19 | 2023-11-17 | 宇通客车股份有限公司 | Laser radar calibration system and calibration plate |
| CN114228153A (en) * | 2021-10-28 | 2022-03-25 | 上海莘临科技发展有限公司 | Double-laser-head calibration method |
| CN114228153B (en) * | 2021-10-28 | 2024-03-12 | 上海莘临科技发展有限公司 | Double laser head calibration method |
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