CN111633781A - High-precision military sand table rapid forming device and method - Google Patents
High-precision military sand table rapid forming device and method Download PDFInfo
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- CN111633781A CN111633781A CN202010653419.2A CN202010653419A CN111633781A CN 111633781 A CN111633781 A CN 111633781A CN 202010653419 A CN202010653419 A CN 202010653419A CN 111633781 A CN111633781 A CN 111633781A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
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- 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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Abstract
The invention discloses a high-precision military sand table rapid forming device and a method, wherein the high-precision military sand table rapid forming device comprises: a lower preforming system, an upper 3D printing system and a data analysis system; wherein the lower preforming system comprises a rack and a preforming data processor; the rack is provided with a plurality of pre-forming modules, the tops of the pre-forming modules are provided with pre-forming table tops, and the pre-forming modules are in communication connection with a pre-forming data processor; the data analysis system is used for generating a plurality of module data according to the terrain data of the terrain to be simulated; the pre-forming data processor is used for adjusting the height of each pre-forming table top according to the module data; and the upper 3D printing system is used for printing sand table landforms needing to be arranged on each pre-forming table top according to the module data. The sand table forming device has the advantages of high forming speed, high precision, low cost, reusability and wide application prospect in the field of sand tables.
Description
Technical Field
The invention relates to the technical field of electromechanical equipment, in particular to a high-precision military sand table rapid forming device and method.
Background
The military sand table has the characteristics of strong stereoscopic impression, image intuition and the like, can accurately show the topography of a battle area, shows the conditions of enemy and my position composition, military force arrangement, weapon configuration and the like, and has important effects on the aspects of analyzing enemy conditions, deploying a combat scheme, organizing cooperative actions, implementing tactical drilling and the like.
The modern military operation has higher requirements on the sand table manufacture, and the sand table is mainly embodied in two aspects:
the first is that the dimensional accuracy is high. For example, the position of grenade rifle, pillbox is disposed, need fully consider its range, peripheral topography, a great deal of factors such as shell orbit, and require high to the sand table size precision.
Secondly, the manufacturing time is short. Modern military operations are in charge of minutes and seconds, and too long manufacturing time influences war deployment and delays a fighter plane.
Traditional military sand table preparation relies on the manual work, and the major process includes size survey and drawing, sand table frame preparation, puts husky strickle off, marks contour line, dredges husky heap sand, scribbles look, overhauls etc. and consuming time very long, and the sand table is coarse in addition, and size precision is low, is difficult to satisfy modernized military requirement.
Sand table forming technology based on 3D printing is a research hotspot at present. The 3D printed military sand table has much higher precision than the traditional sand table, however, the 3D printing has the inevitable defect of long time consumption, especially the printing time of dozens of or even hundreds of hours is required for manufacturing the sand table with complex terrain and large gradient, which is fatal to modern military operations with time-minutes.
Disclosure of Invention
The invention provides a high-precision military sand table rapid forming device and method, and aims to solve the technical problems that the existing sand table manufacturing method is long in time consumption and the manufactured sand table is low in size precision.
In order to solve the technical problems, the invention provides the following technical scheme:
in one aspect, the invention provides a high-precision military sand table rapid forming device, which comprises: a lower preforming system, an upper 3D printing system and a data analysis system; wherein the content of the first and second substances,
the lower preforming system includes: a rack and a pre-form data processor; the rack is provided with a plurality of pre-forming modules, the top of each pre-forming module is provided with a pre-forming table top, and each pre-forming module is respectively in communication connection with the pre-forming data processor;
the pre-forming data processor and the upper 3D printing system are respectively in communication connection with the data analysis system; the data analysis system is used for generating a plurality of module data corresponding to the number of the pre-forming modules according to the terrain data of the terrain to be simulated; the preforming data processor is used for adjusting the height of each preforming table-board according to the module data; and the upper 3D printing system is used for respectively carrying out 3D printing on the sand table landform to be arranged on each preforming table top according to the module data.
Optionally, the lower preforming system further comprises a hydraulic station; the pre-forming module further comprises a hydraulic cylinder and a positioning flow valve;
the preforming table top is connected with a piston of the hydraulic cylinder, the hydraulic cylinder is arranged on the rack, and the hydraulic cylinder is connected with the hydraulic station through the positioning flow valve.
Optionally, the upper 3D printing system comprises: a 3D print data processor and a plurality of 3D printers;
the 3D printer corresponds to the preforming modules one to one, and the shape of a printing area of the 3D printer is matched with that of the preforming table top and is square; each 3D printer is in communication connection with the 3D printing data processor; and the 3D printing data processor is in communication connection with the data analysis system and is used for controlling each 3D printer to print corresponding sand table landforms according to the module data.
Optionally, the plurality of pre-forming modules are distributed in a grid shape in an X-Y plane of the rack.
On the other hand, the invention also provides a high-precision military sand table rapid forming method realized by the high-precision military sand table rapid forming device, which comprises the following steps:
acquiring terrain data of a terrain to be simulated;
preprocessing the acquired topographic data through the data analysis system, and dividing the preprocessed topographic data into a plurality of module data corresponding to the number of the pre-formed modules;
adjusting the height of each preforming table top by the preforming data processor according to the module data generated by the data analysis system to form a prefabricated sand table;
respectively performing 3D printing on the sand table landform to be arranged on each preforming table top through the upper 3D printing system according to the module data generated by the data analysis system;
and respectively placing a plurality of groups of sand table landforms printed by the upper 3D printing system on corresponding preforming table tops in the prefabricated sand tables to obtain the whole sand table corresponding to the terrain to be simulated.
Optionally, the acquiring terrain data of the terrain to be simulated includes:
reconnaissance is carried out on the terrain to be simulated through an unmanned aerial vehicle, and terrain coordinate data of the terrain to be simulated are obtained; the terrain coordinate data ranges from 0 to k M L on the X axis and ranges from 0 to k N L on the Y axis; wherein k is a preset proportional constant, and the value of k is a positive number; m is the number of rows of the pre-forming modules distributed in the X-axis direction; l is the side length of the pre-forming module; and N is the number of rows of the pre-forming module in the Y-axis direction.
Optionally, the preprocessing the acquired terrain data by the data analysis system, and dividing the preprocessed terrain data into a plurality of module data corresponding to the number of the pre-formed modules, includes:
the acquired terrain three-dimensional coordinate data are reduced in an equal proportion through the data analysis system, and the reduction proportion is a preset proportion constant k; and equally dividing the terrain coordinate data into M parts along the X axis and N parts along the Y axis.
Optionally, the pre-processing the acquired terrain data by the data analysis system, and dividing the pre-processed terrain data into a plurality of module data corresponding to the number of the pre-formed modules, further includes:
aiming at each piece of divided terrain coordinate data, calculating the minimum Z coordinate value Z of each piece of terrain coordinate dataminAnd the minimum value Z of the Z coordinate of each terrain coordinate data is determinedminInputting said pre-form data processor;
for each piece of divided terrain coordinate data, subtracting the Z coordinate minimum value Z from the Z coordinate in each piece of terrain coordinate dataminCoordinate conversion of corresponding terrain coordinate data is realized; and inputting the terrain coordinate data after coordinate conversion into the upper 3D printing system.
Optionally, the adjusting, by the pre-forming data processor, the height of each pre-forming table according to the module data generated by the data analysis system to form a pre-formed sand table includes:
the pre-forming data processor is used for processing the minimum value Z of the Z coordinate according to each terrain coordinate dataminAnd controlling the positioning flow valves in the preforming modules to control the volume of oil flowing into the corresponding hydraulic cylinders, so that the height of the corresponding preforming table top is adjusted through the pistons of the hydraulic cylinders to form the prefabricated sand table.
The technical scheme provided by the invention has the beneficial effects that at least:
the method comprises the steps of dividing the whole sand table into a plurality of modules, performing modular processing on terrain coordinate data of the sand table through a data analysis system, and inputting the data of each module into a lower preforming system and an upper 3D printing system respectively; forming a prefabricated sand table according to the data of each module through a lower preforming system, and precisely printing the appearance of the upper sand table of each module according to the data of each module through an upper 3D printing system; after printing is finished, a worker places the printed shape of the upper sand table at the corresponding position of the lower preforming system; therefore, the high-precision military sand table can be quickly and accurately manufactured; has wide application prospect in the military field.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a high-precision military sand table rapid prototyping device provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of modular distribution of data provided by an embodiment of the invention;
FIG. 3 is a schematic diagram of data allocation within a single module according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an upper sand table disposed on a corresponding lower sand table according to an embodiment of the present invention;
FIG. 5 is a graphical representation of topographical data provided by an embodiment of the present invention;
FIG. 6 is a topographical data layout provided by an embodiment of the present invention;
fig. 7 is a schematic diagram of sand table molding according to an embodiment of the present invention.
Description of reference numerals:
1. a lower preforming system; 2. an upper 3D printing system; 3. a data analysis system;
101. a pre-forming module; 102. a pre-form data processor; 103. a frame; 104. a hydraulic station;
201. a 3D printer; 202. a 3D print data processor; 101A, a preforming table top;
101B, a hydraulic cylinder; 101C, positioning flow valves.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
First embodiment
Referring to fig. 1 to 4, the present embodiment provides a high-precision military sand table rapid prototyping apparatus, which includes: a lower preforming system 1, an upper 3D printing system 2, and a data analysis system 3; wherein the content of the first and second substances,
the lower preforming system 1 includes: a rack 103 and a pre-form data processor 102; the rack 103 is provided with a plurality of pre-forming modules 101, the top of each pre-forming module 101 is provided with a pre-forming table 101A, and each pre-forming module 101 is respectively in communication connection with a pre-forming data processor 102;
the pre-forming data processor 102 and the upper 3D printing system 2 are respectively in communication connection with the data analysis system 3; the data analysis system 3 is used for generating a plurality of module data corresponding to the number of the preforming modules 101 according to the terrain data of the terrain to be simulated; the preforming data processor 102 is used for adjusting the height of each preforming table 101A according to the module data; the upper 3D printing system 2 is configured to perform 3D printing on the sand table landform to be arranged on each pre-forming table 101A according to the module data.
Further, to achieve the height adjustability of the preforming table 101A, the lower preforming system 1 of the embodiment further includes a hydraulic station 104; the preforming module 101 further comprises a hydraulic cylinder 101B and a positioning flow valve 101C; the preforming table top 101A is connected with a piston of the hydraulic cylinder 101B, the hydraulic cylinder 101B is arranged on the rack 103, one end of the positioning flow valve 101C is connected with the hydraulic cylinder 101B through a hydraulic pipeline, and the other end of the positioning flow valve 101C is connected with the hydraulic station 104 through a hydraulic pipeline. The volume of oil flowing into the hydraulic cylinder 101B can be controlled by the positioning flow valve 101C, so that the expansion and contraction amount of the piston of the hydraulic cylinder can be controlled, and the height of the preforming table top 101A can be controlled.
Specifically, the pre-forming modules 101 are distributed in a grid shape in the X-Y plane of the frame 103. The number of the pre-forming modules 101 is M × N, M rows are distributed in the X-axis direction, and N rows are distributed in the Y-axis direction; and in this embodiment the pre-form module 101 is square in the X-Y plane.
Further, the upper 3D printing system 2 includes: a 3D print data processor 202 and a plurality of 3D printers 201; the number of the 3D printers 201 is M × N, M rows are distributed in the X-axis direction, N rows are distributed in the Y-axis direction, the 3D printers 201 correspond to the preforming modules 101 one to one, and the shapes of the printing areas of the 3D printers 201 are matched with the shapes of the preforming table-boards 101A and are all square; each 3D printer 201 is in communication connection with the 3D print data processor 202; the 3D printing data processor 202 is in communication connection with the data analysis system 3, and is configured to control each 3D printer 201 to perform 3D printing on a sand table landform to be placed on the corresponding preforming table 101A according to the module data.
The data analysis system 3 of the embodiment can perform modular processing on the terrain coordinate data of the sand table, and input each module data into the lower preforming system 1 and the upper 3D printing system 2 respectively; the lower preforming system 1 adjusts the height of each preforming table-board 101A according to the data of each module to form a prefabricated sand table, and the upper 3D printing system 2 precisely prints the appearance of the upper sand table of each module according to the data of each module; after printing is finished, manually placing the printed upper sand table on the corresponding preforming table top 101A; thereby rapidly and accurately manufacturing a high-precision military sand table; has wide application prospect in the military field.
Second embodiment
Referring to fig. 1 to 4, the present embodiment provides a method for quickly forming a high-precision military sand table by using the apparatus for quickly forming a high-precision military sand table, the method includes:
s1, acquiring terrain data of the terrain to be simulated, and inputting the acquired data into the data analysis system 3;
s2, preprocessing the acquired topographic data by the data analysis system 3, and dividing the preprocessed topographic data into a plurality of module data corresponding to the number of the pre-forming modules 101;
s3, adjusting the height of each preforming table 101A through the preforming data processor 102 according to the module data generated by the data analysis system 3 to form a prefabricated sand table;
s4, 3D printing is respectively carried out on the sand table landform to be arranged on each preforming table-board 101A through the upper 3D printing system 2 according to the module data generated by the data analysis system 3;
and S5, respectively placing a plurality of groups of sand table landforms printed by the upper 3D printing system on corresponding pre-forming table tops in the pre-formed sand tables to obtain the whole sand table corresponding to the landforms to be simulated.
In this embodiment, S1 specifically includes: reconnaissance is carried out on the terrain to be simulated through the unmanned aerial vehicle, and terrain coordinate data of the terrain to be simulated are obtained; the obtained topographic coordinate data ranges from 0 to k M L on the X axis and ranges from 0 to k N L on the Y axis; wherein k is a preset proportional constant, and the value of k is a positive number; m is the number of rows of the preform modules 101 distributed in the X-axis direction; l is the side length of the preform module 101; n is the number of rows of the preform modules 101 distributed in the Y-axis direction.
In this embodiment, the steps S2 to S4 are specifically:
the acquired topographic coordinate data are reduced in an equal proportion through a data analysis system 3, and three-dimensional coordinates are changed into 1/k of original coordinates; and equally dividing the terrain coordinate data into M parts along the X axis and N parts along the Y axis.
Processing any one piece of divided module terrain coordinate data marked as (i, j), namely terrain coordinate data in the data module of the ith row and the jth column, by adopting the following method:
k1, calculating the minimum Z coordinate value of the module terrain coordinate data marked as (i, j), and marking the Z coordinate as Zijmin(ii) a Will ZijminData is input into the pre-form data processor 102, and the pre-form data processor 102 inputs the data into the corresponding dataA position flow valve 101C; the positioning flow valve 101C controls the volume of oil flowing into the hydraulic cylinder 101B through flow control, and further controls the height coordinate of the preforming table top 101A;
wherein, the fluid volume control rule of positioning flow valve 101C is:
when the volume of oil flowing into the hydraulic cylinder 101B is equal to S X ZijminWhen the flow valve is closed, the positioning flow valve 101C is closed; where S is the cross-sectional area of the hydraulic cylinder 101B.
K2, the coordinate of Z axis in the module terrain coordinate data marked as (i, j) satisfies that Z is more than or equal to ZijminThe part (2) performing coordinate transformation, wherein the coordinate transformation rule is as follows:
u＝X；
v＝Y；
w＝Z-Zijmin
wherein u is the abscissa after transformation, and X is the abscissa before transformation; v is the ordinate after transformation, and Y is the ordinate before transformation; w is the vertical coordinate after transformation, and Z is the vertical coordinate before transformation.
And inputting the data subjected to coordinate transformation into a 3D printing data processor 202, inputting the data into a corresponding 3D printer 201 by the 3D printing data processor 202, and performing 3D printing on the module sand table landform marked as (i, j).
In the embodiment, the whole sand table is divided into a plurality of modules, the data analysis system 3 is used for modularizing the terrain coordinate data of the sand table, and the data of each module is respectively input into the lower preforming system 1 and the upper 3D printing system 2; forming a prefabricated sand table according to the data of each module through a lower preforming system 1, and printing the appearance of the upper sand table of each module according to the data of each module through an upper 3D printing system 2; after printing, a worker places the printed shape of the upper sand table at the corresponding position of the lower preforming system 1; thereby rapidly and accurately manufacturing a high-precision military sand table; has wide application prospect in the military field.
Third embodiment
Referring to fig. 5 to 7, the present embodiment provides a method for rapidly forming a high-precision military sand table by using the apparatus for rapidly forming a high-precision military sand table, which is further explained by using two-dimensional diagrams:
the terrain to be simulated is reconnaissance by the unmanned aerial vehicle, and terrain data shown in fig. 5 is obtained.
As shown in fig. 6, the acquired three-dimensional terrain coordinate data is reduced in equal proportion by the data analysis system 3, and the coordinates are changed to 1/k of the original coordinates; wherein k is a preset proportional constant; further, the terrain coordinate data of the sand table is subjected to modularization processing to obtain 6 modules from left to right, and the Z coordinate minimum values of the 6 modules are respectively marked as Z1min、Z2min、Z3min、Z4min、Z5min、Z6min；
The first module data processing and forming method comprises the following steps:
1. will Z1minData are input into a pre-forming data processor 102, and the pre-forming data processor 102 inputs the data into a corresponding positioning flow valve 101C; the positioning flow valve 101C controls the volume of oil flowing into the hydraulic cylinder 101B by flow control, so that the height coordinate of the preforming table 101A of the first module is Z1min；
2. Enabling the Z-axis coordinate in the terrain coordinate data of the first module to meet the condition that Z is more than or equal to Z1minThe part (2) performing coordinate transformation, wherein the coordinate transformation rule is as follows:
u＝X；
v＝Y；
w＝Z-Z1min
wherein u is the abscissa after transformation, and X is the abscissa before transformation; v is the ordinate after transformation, and Y is the ordinate before transformation; w is the vertical coordinate after transformation, and Z is the vertical coordinate before transformation.
3. The data after the first module coordinate transformation is input to the 3D printing data processor 202, and the 3D printing data processor 202 inputs the data to the corresponding 3D printer 201 for 3D printing.
4. And (3) placing the upper sand table appearance of the first module printed in the 3D mode on the preformed table top 101A of the first module formed in the step 1.
The second module to the sixth module can be obtained according to the steps 1-4, respectively, to obtain the overall sand table shape, as shown in fig. 7.
Fourth embodiment
There are sand table forming systems, as shown in table 1, with dimensions of X-axis 2m and Y-axis 1m, and each pre-forming module has a dimension L of 0.2m, i.e. 10 columns of modules are provided on the X-axis and 5 rows of modules are provided on the Y-axis.
According to the operational requirement, the actual area needing unmanned reconnaissance is 20000m long and 10000m wide, and the preset proportional constant of the system is k 10000.
The three-dimensional topographic data acquired by the unmanned reconnaissance aircraft needs to be scaled down in the data analysis system 3, and the scaling factor is reduced, namely the preset scaling constant k.
Further, data analysis and sand table formation were performed according to the above-described embodiment.
TABLE 1 data Allocation Table
Moreover, it is noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
It should be noted that the above describes only a preferred embodiment of the invention and that, although a preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, once having the benefit of the teachings of the present invention, numerous modifications and adaptations can be made without departing from the principles of the invention and are intended to be within the scope of the invention. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Claims (9)
1. The utility model provides a military sand table rapid prototyping device of high accuracy which characterized in that includes: a lower preforming system, an upper 3D printing system and a data analysis system; wherein the content of the first and second substances,
the lower preforming system includes: a rack and a pre-form data processor; the rack is provided with a plurality of pre-forming modules, the top of each pre-forming module is provided with a pre-forming table top, and each pre-forming module is respectively in communication connection with the pre-forming data processor;
the pre-forming data processor and the upper 3D printing system are respectively in communication connection with the data analysis system; the data analysis system is used for generating a plurality of module data corresponding to the number of the pre-forming modules according to the terrain data of the terrain to be simulated; the preforming data processor is used for adjusting the height of each preforming table-board according to the module data; and the upper 3D printing system is used for respectively carrying out 3D printing on the sand table landform to be arranged on each preforming table top according to the module data.
2. The high precision military sand table rapid prototyping apparatus of claim 1 wherein said lower preforming system further comprises a hydraulic station; the pre-forming module further comprises a hydraulic cylinder and a positioning flow valve;
the preforming table top is connected with a piston of the hydraulic cylinder, the hydraulic cylinder is arranged on the rack, and the hydraulic cylinder is connected with the hydraulic station through the positioning flow valve.
3. The high precision military sand table rapid prototyping apparatus of claim 1, wherein said upper 3D printing system comprises: a 3D print data processor and a plurality of 3D printers;
the 3D printer corresponds to the preforming modules one to one, and the shape of a printing area of the 3D printer is matched with that of the preforming table top and is square; each 3D printer is in communication connection with the 3D printing data processor; and the 3D printing data processor is in communication connection with the data analysis system and is used for controlling each 3D printer to print corresponding sand table landforms according to the module data.
4. A high precision military sand table rapid prototyping apparatus as set forth in claim 1 wherein said plurality of prototyping modules are arranged in a grid pattern within an X-Y plane of said rack.
5. A high-precision military sand table rapid prototyping method achieved through the high-precision military sand table rapid prototyping apparatus defined in any one of claims 1-4, wherein the method comprises:
acquiring terrain data of a terrain to be simulated;
preprocessing the acquired topographic data through the data analysis system, and dividing the preprocessed topographic data into a plurality of module data corresponding to the number of the pre-formed modules;
adjusting the height of each preforming table top by the preforming data processor according to the module data generated by the data analysis system to form a prefabricated sand table;
respectively performing 3D printing on the sand table landform to be arranged on each preforming table top through the upper 3D printing system according to the module data generated by the data analysis system;
and respectively placing a plurality of groups of sand table landforms printed by the upper 3D printing system on corresponding preforming table tops in the prefabricated sand tables to obtain the whole sand table corresponding to the terrain to be simulated.
6. The method for rapid prototyping high accuracy military sand tables as set forth in claim 5, wherein said obtaining terrain data for the terrain to be simulated comprises:
reconnaissance is carried out on the terrain to be simulated through an unmanned aerial vehicle, and terrain coordinate data of the terrain to be simulated are obtained; the terrain coordinate data ranges from 0 to k M L on the X axis and ranges from 0 to k N L on the Y axis; wherein k is a preset proportional constant, and the value of k is a positive number; m is the number of rows of the pre-forming modules distributed in the X-axis direction; l is the side length of the pre-forming module; and N is the number of rows of the pre-forming module in the Y-axis direction.
7. The method of rapid prototyping high accuracy military sand tables of claim 6 wherein said pre-processing acquired terrain data by said data analysis system and dividing the pre-processed terrain data into a plurality of module data corresponding to the number of said pre-prototyping modules comprises:
the acquired terrain three-dimensional coordinate data are reduced in an equal proportion through the data analysis system, and the reduction proportion is a preset proportion constant k; and equally dividing the terrain coordinate data into M parts along the X axis and N parts along the Y axis.
8. The method of rapid prototyping high accuracy military sand tables of claim 7 wherein said preprocessing of acquired terrain data by said data analysis system and partitioning of the preprocessed terrain data into a plurality of module data corresponding to the number of said pre-prototyping modules further comprises:
aiming at each piece of divided terrain coordinate data, calculating the minimum Z coordinate value Z of each piece of terrain coordinate dataminAnd the minimum value Z of the Z coordinate of each terrain coordinate data is determinedminInputting said pre-form data processor;
aiming at each piece of divided terrain coordinate data, the Z coordinate minus the Z coordinate in each piece of terrain coordinate data is minimumValue ZminCoordinate conversion of corresponding terrain coordinate data is realized; and inputting the terrain coordinate data after coordinate conversion into the upper 3D printing system.
9. The method of claim 8, wherein said adjusting the height of each of said preformed mesas by said preformed data processor based on said module data generated by said data analysis system to form a preformed sand table comprises:
the pre-forming data processor is used for processing the minimum value Z of the Z coordinate according to each terrain coordinate dataminAnd controlling the positioning flow valves in the preforming modules to control the volume of oil flowing into the corresponding hydraulic cylinders, so that the height of the corresponding preforming table top is adjusted through the pistons of the hydraulic cylinders to form the prefabricated sand table.
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