CN114851566B - Intelligent correction control method for DLP3D printing - Google Patents
Intelligent correction control method for DLP3D printing Download PDFInfo
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- CN114851566B CN114851566B CN202210783683.7A CN202210783683A CN114851566B CN 114851566 B CN114851566 B CN 114851566B CN 202210783683 A CN202210783683 A CN 202210783683A CN 114851566 B CN114851566 B CN 114851566B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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Abstract
The invention relates to the technical field of 3D printing systems, in particular to an intelligent correction control method for DLP3D printing, which comprises the following steps: firstly, correcting the projection size; then carrying out projection focusing correction; then, performing illuminance uniformity correction; and finally, completing the correction of the projection deformity. The invention improves the size precision of the printing piece in the XY direction.
Description
Technical Field
The invention relates to the technical field of 3D printing systems, in particular to an intelligent correction control method for DLP3D printing.
Background
DLP technology is a rapid prototyping technology that creates 3D printed objects by curing photopolymer liquids layer by layer using a projector. The forming technology firstly utilizes slicing software to slice a model, a projector plays slides, each layer of image generates photopolymerization reaction in a very thin area of a resin layer to be solidified to form a thin layer of a part, then a forming table moves one layer, the projector continuously plays the next slide, the next layer is continuously processed, the process is circulated until the printing is finished, and therefore the forming precision is high, and the printing speed is very high.
DLP-based 3D printing equipment has become the most common 3D printer product in the market at present. The technology has high printing precision which can reach micron level, and the surface of the model printed by the equipment is very smooth and fine and far exceeds that of other molding technologies. Meanwhile, the printing speed of the equipment is very high, and the equipment is one of the product types with the highest forming speed in common equipment on the market at present.
At present, the core advantages of the DLP type 3D printer are high precision and high printing speed. The DLP3D printer device accuracy directly determines the printing accuracy, and in a space rectangular coordinate system: x represents the horizontal axis, y represents the vertical axis, and z represents the vertical axis, and the dimensional deviation in any of the 3 directions causes the distortion of the overall accuracy. Because of the moving mode of the forming platform, the Z axis is completely different from the XY axis, and needs to be seen separately. The Z-axis precision is determined by the Z-axis module precision, the X-axis precision and the Y-axis precision are determined by the optical machine precision, the precision error of a few micrometers of the Z-axis can be ignored, the resolution on an XY surface is actually influenced on the printing quality, so the light path has a tiny error, the model can be distorted and distorted, the precision is inaccurate, and the XY calibration error is a common reason for causing the precision distortion.
Disclosure of Invention
The invention provides an intelligent correction control method for DLP3D printing, which greatly improves the printing precision and the printing quality.
In order to realize the purpose of the invention, the adopted technical scheme is as follows: an intelligent correction control method for DLP3D printing, the method comprising the steps of:
1) correcting the projection size: the control module outputs a full-frame picture signal to the optical machine, the optical machine projects the full-frame picture signal to the forming platform, and the mounting height of the optical machine is adjusted through checking the projection size;
2) and (3) projection focusing correction: the control module outputs a focusing picture signal to the optical machine, the optical machine projects the focusing picture signal to the forming platform, and the optical machine installation focusing is confirmed by shooting the projected focusing picture;
3) and (3) correcting the uniformity of the illuminance: the control module outputs a full-white full-frame picture signal to the optical machine, the optical machine projects an illuminance uniformity correction picture to the forming platform, and illuminance of each correction area of the illuminance uniformity correction picture is corrected by measuring the illuminance uniformity, so that the illuminance uniformity of output light of the optical machine is corrected;
4) and (3) correcting the projection deformity: the control module imports correction block slicing data, starts printing, outputs the correction block slicing data to the optical machine, and projects the correction block slicing data to the forming platform layer by the optical machine, and the correction block is formed layer by layer, the size of the correction block is measured, and projection deformity correction of the optical machine (1) is carried out.
As an optimized scheme of the invention, the intelligent correction control method for DLP3D printing further comprises the following steps of: the control module outputs a full white full frame image signal to the optical machine, the optical machine projects the full white full frame image signal to the forming platform, and the optical machine outputs optical power correction by collecting the optical power output by the optical machine.
As an optimization scheme of the invention, the resolution needs to be changed before step 1); the optical machine is connected with the control module through the HDMI high definition line, and the control module changes the resolution of the HDMI high definition line so as to be matched with the initial resolution of the optical machine, so that the optical machine can recognize the image signal input by the control module.
As an optimization scheme of the invention, the projection size correction in the step 1) comprises the following specific steps:
A. measuring the size of a projection full-frame picture on a forming platform, wherein the size comprises measured values in the X direction and the Y direction;
B. judging the measurement value and the size of the preset full-width picture of the optical machine, if the measurement value is larger than the size of the preset full-width picture of the optical machine, adjusting the optical machine installation and adjustment device to move upwards to reduce the distance between the optical machine and the forming platform, so that the size of the full-width picture projected by the optical machine is reduced; if the measured value is smaller than the preset full-width picture size of the optical machine, the optical machine installation and adjustment device is adjusted to move downwards, so that the distance between the optical machine and the forming platform is increased, and the size of the full-width picture projected by the optical machine is increased;
C. and C, repeating the step B again until the size of the full picture projected by the optical machine is consistent with the preset full picture size.
As an optimized scheme of the invention, the step 2) of projection focusing correction comprises the following steps:
step 2) the projection focus correction comprises the following steps:
a. the digital camera judges contrast transfer function values of four corners and a central area of the projected focusing picture by shooting the projected focusing picture;
b. if the contrast transfer function value at four corners of the focusing picture is less than a 0 The control module outputs signals to the rear group motor, the rear group motor drives the rear group of the lens to adjust until the contrast transfer function values of four corners of the focusing picture are more than or equal to a 0 (ii) a If the contrast transfer function value of the central area of the focusing picture is less than a 0 The control module outputs a signal to the front group motor, and the front group motor drives the front group of the lens to adjust until the contrast transfer function value of the central area of the focusing picture is more than or equal to a 0 (ii) a If the contrast transfer function value of four corners of the focusing picture is more than or equal to a 0 And the contrast transfer function value of the central area of the focusing picture is more than or equal to a 0 And the optical machine is qualified in installation and focusing.
As an optimized scheme of the invention, the step 3) of correcting the uniformity of the illuminance comprises the following steps:
i, dividing the illuminance uniformity correction picture into a plurality of grids according to rows and columns, arranging an optical sensor above each grid, measuring output illuminance by the optical sensor, and outputting the illuminance and a specific value b 0 Comparing;
II, if the illuminance is larger than the specific value b 0 And increasing the gray value corresponding to the area, and finally enabling the illuminance uniformity measurement value error of each grid to be less than 5%.
As an optimized solution of the present invention, the step 4) of correcting the projection deformities includes the following steps:
the control module outputs standard correction block slice data to the optical machine, the UV LED is started to start solidification, the optical machine projects the correction block slice data to the forming platform layer by layer, and the correction blocks are formed layer by layer;
ii, measuring the sizes of the projected correcting block in the front, back, left and right directions, and if the sizes of the correcting block in the front and back directions are not consistent, adjusting the optical machine installation and adjustment device to enable the sizes of the projected correcting block in the front and back directions to be consistent; and if the left and right sizes of the correction block are not consistent, adjusting the optical machine installation and adjustment device to enable the left and right sizes of the projected correction block to be consistent.
As an optimized scheme of the invention, when the output light power of the optical machine is corrected, the output light power of the optical machine is collected by the optical sensor, and the output light power of the optical machine is corrected by adjusting the brightness of the LED.
As an optimized solution of the present invention, the luminance of the LED =1000 × (current value of LED)/30.0.
The invention has the positive effects that: the invention simplifies the debugging process, realizes the intellectualization of the whole DLP3D printing process, quantifies the debugging standard, reduces the error rate of X-axis and Y-axis calibration, and greatly improves the printing precision and the printing quality.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is an overall flow diagram of the method of the present invention;
FIG. 2 is a schematic diagram of the structure of the optical path of the present invention;
FIG. 3 is a flow chart of projection size correction according to the present invention;
FIG. 4 is a flow chart of the projection focus correction of the present invention;
FIG. 5 is an enlarged view of four corners and a center area of a focusing screen according to the present invention;
FIG. 6 is a schematic illustration of a projected focus picture of the present invention;
FIG. 7 is a schematic view of a print for a standard proof mass.
Wherein: 1. the optical machine comprises an optical machine, 2, a front group motor, 3, a front group lens, 4, a rear group lens, 5, a rear group motor, 6, an optical machine mounting and adjusting device, 7, a forming platform, 8, an optical sensor, 9, a control module, 10, a digital camera, 11, a first screw, 12 and a second screw.
Detailed Description
As shown in fig. 1 and 2, the invention discloses an intelligent correction control method for DLP3D printing, which comprises the following steps:
1) correcting the projection size: the control module 9 outputs a full-frame picture signal to the optical machine 1, the optical machine 1 projects the full-frame picture signal to the forming platform 7, and the installation height of the optical machine 1 is adjusted through checking the projection size; the control module 9 is used for sending control commands and outputting various signals; the shaping platform 7 is the receiving terminal of ray apparatus 1 output. The height adjustment precision of the optical machine 1 directly determines the size precision of the printing member in the XY direction.
2) And (3) projection focusing correction: the control module 9 outputs a focusing picture signal to the optical machine 1, the optical machine 1 projects the focusing picture signal to the forming platform 7, and the installation focusing of the optical machine 1 is confirmed by shooting the projected focusing picture; the degree of projection focus correction of the optical engine 1 determines the fineness of the printed material. The focusing picture is designed for confirming whether focusing is carried out or not, and as shown in an enlarged schematic diagram shown in fig. 5, the focusing picture comprises lines between black and white, the line width and the space are 1pixel, if not focusing, the image is blurred after being enlarged under a camera with 1000 times of enlargement, and the lines cannot be seen.
3) And (3) correcting the uniformity of the illuminance: the control module 9 outputs a full white full frame image signal to the optical machine 1, the optical machine 1 projects an illuminance uniformity correction image to the forming platform 7, and illuminance of each correction area of the illuminance uniformity correction image is measured so as to correct the illuminance uniformity output by the optical machine 1; the degree of uniformity of the illuminance output by the optical engine 1 directly determines the printing precision and printing efficiency of a printed matter. The light intensity uniformity correction picture is a small square grid which is completely white and full picture and is uniformly divided into 5 lines and 10 rows, each grid is a correction area, the optical sensor 8 is placed in the corresponding grid, the light intensity in the grid area can be measured, when the areas are different, the area with larger light intensity needs to be darkened, namely, the gray value is adjusted until the light intensity of all the areas is consistent, the picture with different gray values can be used as a light shield, the light shield file is stored in a cache memory in a PNG format, and the light shield is superposed on the picture projected each time, so that the light intensity of all the areas of the optical machine 1 can be ensured to be consistent, namely, the light intensity is uniform.
4) And (3) correcting the projection deformity: the control module 9 imports correction block slice data, starts printing, the control module 9 outputs the correction block slice data to the optical machine 1, the optical machine 1 projects the correction block slice data layer by layer to the forming platform 7, the correction block is formed layer by layer, the size of the correction block is measured, and projection deformity correction of the optical machine 1 is carried out. The verticality adjustment of the optical machine 1 can be realized by the optical machine installation and adjustment device 6, and the size precision of the printing piece in the XY direction is directly determined by the correction precision of the projection deformity of the optical machine. The correction block slice data is a 3D image designed by external 3D drawing software, and is sliced by the slicing software. The projection direction of the optical machine 1 needs to be perpendicular to the projection plane, otherwise, a projection trapezoidal phenomenon occurs.
The intelligent correction control method for DLP3D printing further comprises the following steps of optical machine 1 output optical power correction: the control module 9 outputs a full white full frame signal to the optical machine 1, the optical machine 1 projects the full white full frame signal to the forming platform 7, and the output optical power of the optical machine 1 is corrected by collecting the output optical power of the optical machine 1. The output optical power of the optical machine 1 directly determines the printing efficiency. When the optical machine 1 outputs the optical power correction, the optical machine 1 outputs the optical power which is collected by the optical sensor 8, and the optical machine 1 outputs the optical power correction which is completed by adjusting the brightness of the LED. Luminance of LED =1000 × (current value of LED)/30.0. The output optical power of the light engine 1 can be corrected by adjusting the LED current in the light engine 1.
The resolution needs to be changed before step 1); the optical machine 1 is connected with the control module 9 through the HDMI high definition cable, and the control module 9 changes the resolution of the HDMI high definition cable to match with the initial resolution of the optical machine 1, so that the optical machine 1 can recognize the image signal input by the control module 9.
As shown in fig. 3, the projection size correction in step 1) includes the following specific steps:
A. measuring the size of a projection full-frame picture on the forming platform 7, wherein the size comprises measured values in the X direction and the Y direction;
B. judging the measurement value and the size of the preset full-width picture of the optical machine 1, if the measurement value is larger than the size of the preset full-width picture of the optical machine 1, adjusting the optical machine installation and adjustment device 6 to move upwards, and reducing the distance between the optical machine 1 and the forming platform 7, so that the size of the full-width picture projected by the optical machine 1 is reduced; if the measured value is smaller than the preset full-width picture size of the optical machine 1, the optical machine installation and adjustment device 6 is adjusted to move downwards, so that the distance between the optical machine 1 and the forming platform 7 is increased, and the size of the full-width picture projected by the optical machine 1 is increased;
C. and repeating the step B again until the size of the full picture projected by the optical machine 1 is consistent with the preset full picture size. The projection distance of the optical machine 1 is in direct proportion to the size of the projection image of the optical machine 1, that is, the projection size is larger when the optical machine 1 is far away from the forming platform 7, and the projection size is smaller when the optical machine 1 is close to the forming platform 7. The optical machine 1 presets a full frame, namely the full frame output by the control module 9.
As shown in fig. 4, the step 2) of projection focus correction comprises the following steps:
a. the digital camera 10 determines contrast transfer function values of four corners and a central area of a projected focusing screen by shooting the projected focusing screen (fig. 6);
b. if the contrast transfer function value (CTF) < a at four corners (P13, P14, P15, P16) of the focusing picture 0 Control the moldThe block 9 outputs a signal to the rear group motor 5, the rear group motor 5 drives the rear lens group 4 to adjust until the contrast transfer function values of four corners of the focusing picture are more than or equal to a 0 (ii) a If the contrast transfer function value of the focusing picture central region (P6) is less than a 0 The control module 9 outputs a signal to the front group motor 2, the front group motor 2 drives the front lens group 3 to adjust until the contrast transfer function value of the central area of the focusing picture is more than or equal to a 0 (ii) a If the contrast transfer function value of four corners of the focusing picture is more than or equal to a 0 And the contrast transfer function value of the central area of the focusing picture is more than or equal to a 0 And the optical machine 1 is qualified in installation and focusing. The focus motor includes a front group motor 2 and a rear group motor 5. Wherein the specific value a 0 Is the qualified standard of the contrast transfer function value of the optical machine 1.
Step 3) the illuminance uniformity correction comprises the following steps:
i, dividing an illuminance uniformity correction picture (uniformly divided into 5 rows and 10 columns, and 50 grids in total) into a plurality of grids according to rows and columns, arranging an optical sensor 8 above each grid, measuring output illuminance by the optical sensor 8, outputting an illuminance reading instruction by a control module 9 to obtain a correct reading value of the optical sensor 8, and outputting the illuminance and a specific value b 0 Comparing;
II, if the illuminance is larger than the specific value b 0 Then the gray scale value corresponding to the area is increased, i.e. the output light illumination is decreased, so that the illumination uniformity measurement value error of each grid is finally less than 5%. I.e. (max-min)/max < 5%. A specific value b 0 Is a qualified standard of the illuminance of the optical machine 1.
Step 4), the projection deformity correction comprises the following steps:
the control module 9 inputs a first layer of image through an HDMI high-definition line, namely, standard correction block slice data is output to the optical machine 1, a UV LED (ultraviolet light emitting diode) is started to start solidification, the optical machine 1 projects the correction block slice data to the forming platform 7 layer by layer, and the correction blocks are formed layer by layer;
ii, measuring the sizes of the projected correction block in the front, back, left and right directions, and if the sizes of the correction block in the front and back directions are not consistent, adjusting the optical machine installation and adjustment device 6 to ensure that the sizes of the projected correction block in the front and back directions are consistent; if the left and right sizes of the correction blocks are not consistent, the optical machine installation and adjustment device 6 is adjusted to enable the left and right sizes of the projected correction blocks to be consistent.
As shown in fig. 7, the standard correction block slice data is a standard 60 × 120 standard block slice file, such as: the size is inconsistent around, adjusts first screw 11, and ray apparatus 1 is shaping platform 7 relatively, and around certain angle of Y axle rotation, reach unanimously around making the projection size, if left side is greater than the right side, adjust second screw 12, ray apparatus 1 is shaping platform 7 relatively, around certain angle of X axle rotation for the size is unanimous about the projected correction block, and is all unanimous until printing a face-to-face size.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An intelligent correction control method for DLP3D printing is characterized in that: the method comprises the following steps:
1) correcting the projection size: the control module (9) outputs a full-frame picture signal to the optical machine (1), the optical machine (1) projects the full-frame picture signal to the forming platform (7), and the installation height of the optical machine (1) is adjusted through checking the projection size;
step 1) the projection size correction comprises the following specific steps:
A. measuring the size of a projection full-width picture on a forming platform (7), wherein the size comprises measured values in the X direction and the Y direction;
B. judging the measurement value and the size of the preset full-width picture of the optical machine (1), if the measurement value is larger than the size of the preset full-width picture of the optical machine (1), adjusting the optical machine installation and adjustment device (6) to move upwards to reduce the distance between the optical machine (1) and the forming platform (7), so that the size of the full-width picture projected by the optical machine (1) is reduced; if the measured value is smaller than the preset full-frame size of the optical machine (1), the optical machine installation and adjustment device (6) is adjusted to move downwards, so that the distance between the optical machine (1) and the forming platform (7) is increased, and the size of the full-frame projected by the optical machine (1) is increased;
C. repeating the step B again until the size of the full picture projected by the optical machine (1) is consistent with the preset full picture size;
2) and (3) projection focusing correction: the control module (9) outputs a focusing picture signal to the optical machine (1), the optical machine (1) projects the focusing picture signal to the forming platform (7), and the installation focusing of the optical machine (1) is confirmed by shooting the projected focusing picture;
step 2) the projection focus correction comprises the following steps:
a. the digital camera (10) judges contrast transfer function values of four corners and a central area of the projected focusing picture by shooting the projected focusing picture;
b. if the contrast transfer function value at four corners of the focusing picture is less than a 0 The control module (9) outputs signals to the rear group motor (5), the rear group motor (5) drives the rear lens group (4) to adjust until the contrast transfer function values of four corners of the focusing picture are more than or equal to a 0 (ii) a If the contrast transfer function value of the central area of the focusing picture is less than a 0 The control module (9) outputs a signal to the front group motor (2), the front group motor (2) drives the lens front group (3) to adjust until the contrast transfer function value of the central area of the focusing picture is more than or equal to a 0 (ii) a If the contrast transfer function value of four corners of the focusing picture is more than or equal to a 0 And the contrast transfer function value of the central area of the focusing picture is more than or equal to a 0 If the installation and focusing of the optical machine (1) are qualified;
3) and (3) correcting the uniformity of the illuminance: the control module (9) outputs a full-white full-frame picture signal to the optical machine (1), the optical machine (1) projects an illuminance uniformity correction picture to the forming platform (7), and illuminance of each correction area of the illuminance uniformity correction picture is measured, so that illuminance uniformity correction of output of the optical machine (1) is performed;
step 3) the illuminance uniformity correction comprises the following steps:
i, uniformity of illuminanceThe correction frame is divided into a plurality of grids according to lines and rows, the optical sensor (8) is arranged above each grid, the optical sensor (8) measures the output illuminance, and the output illuminance and a specific value b 0 Comparing;
II, if the illuminance is larger than the specific value b 0 Increasing the gray value corresponding to the grid area, and finally enabling the illumination uniformity measurement value error of each grid to be less than 5%;
4) and (3) correcting the projection deformity: the control module (9) imports correction block slicing data, starts printing, the control module (9) outputs the correction block slicing data to the optical machine (1), the optical machine (1) projects the correction block slicing data to the forming platform (7) layer by layer, the correction blocks are formed layer by layer, the size of the correction blocks is measured, and projection deformity correction of the optical machine (1) is carried out;
step 4), the projection deformity correction comprises the following steps:
the control module (9) outputs standard correction block slice data to the optical machine (1), the UV LED is started to start solidification, the optical machine (1) projects the correction block slice data to the forming platform (7) layer by layer, and the correction blocks are formed layer by layer;
ii, measuring the sizes of the projected correcting block in the front, back, left and right directions, and if the sizes of the correcting block in the front and back directions are not consistent, adjusting the optical machine installation and adjustment device (6) to enable the sizes of the projected correcting block in the front and back directions to be consistent; if the left and right sizes of the correction blocks are not consistent, the optical machine installation and adjustment device (6) is adjusted to enable the left and right sizes of the projected correction blocks to be consistent.
2. The intelligent correction control method for DLP3D printing according to claim 1, wherein: the intelligent correction control method for DLP3D printing further comprises the following steps of correcting the output light power of the optical machine (1): the control module (9) outputs full white full frame picture signals to the optical machine (1), the optical machine (1) projects the full white full frame picture signals to the forming platform (7), and output optical power of the optical machine (1) is collected to correct the output optical power of the optical machine (1).
3. The intelligent correction control method for DLP3D printing according to claim 2, wherein: the resolution needs to be changed before step 1); the optical machine (1) is connected with the control module (9) through the HDMI high definition cable, and the control module (9) changes the resolution of the HDMI high definition cable so as to be matched with the initial resolution of the optical machine (1), so that the optical machine (1) can recognize the image signal input by the control module (9).
4. The intelligent correction control method for DLP3D printing according to claim 3, wherein: when the optical machine (1) outputs the optical power correction, the optical power output by the optical machine (1) is collected through the optical sensor (8), and the optical power output by the optical machine (1) is corrected by adjusting the brightness of the LED.
5. The intelligent correction control method for DLP3D printing according to claim 4, wherein: the luminance of the LED =1000 × (current value of LED)/30.0.
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| CN107945130B (en) * | 2017-11-28 | 2020-04-07 | 华南理工大学 | Projection deformity correction method for photocuring 3D printer |
| US11498132B2 (en) * | 2019-01-30 | 2022-11-15 | General Electric Company | Additive manufacturing systems and methods of calibrating for additively printing on workpieces |
| CN110751609B (en) * | 2019-10-25 | 2022-03-11 | 浙江迅实科技有限公司 | DLP printing precision improving method based on intelligent optical distortion correction |
| CN114506073B (en) * | 2022-02-17 | 2024-03-08 | 瑞迪光电(深圳)有限公司 | Surface projection system with auxiliary focusing function and DLP-3D photo-curing printing system |
| CN114851566B (en) * | 2022-07-05 | 2022-09-20 | 南京铖联激光科技有限公司 | Intelligent correction control method for DLP3D printing |
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| TW201641260A (en) * | 2015-05-20 | 2016-12-01 | 三益海棠股份有限公司 | A light-curable 3D machine light loading system calibration |
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| CN106827515A (en) * | 2017-02-20 | 2017-06-13 | 大族激光科技产业集团股份有限公司 | 3D printing is imaged calibration method and system |
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| CN114851566A (en) | 2022-08-05 |
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