Sand table processing method for 3D real topographic map

Abstract

The invention discloses a processing method of a 3D real-scene topographic map sand table. Data reconstruction and graph segmentation are carried out on electronic sand table data of an OBJ format to obtain a one-sided model, according to the one-sided model, processing parameters are set and a cutter track is generated, processing simulation is carried out according to the processing parameters and the cutter track, and equipment of a processing center is provided for entity processing. According to the invention, the proportion can be controlled, a landform sand table model is not distorted, processing can be carried out needless of substantiating the one-sided model, a tedious one-sided model substantiating processing is omitted, labor and time cost is saved, the processing equipment is universal equipment, the processing precision is adjustable and controllable, the fineness processing precision can reach 0.05mm according to different processing precisions, labor cost and time are reduced, the processing efficiency is improved, and the production benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional real topographic map sand table processing, and in particular relates to a processing method for a three-dimensional real topographic map sand table. Background technique [0002] 3D real topographic maps are widely used in urban planning, military exercises, engineering design, agricultural planning, environmental governance and other fields. Generally, the processing methods of the three-dimensional topographic map sand table are manual hand-made, computer numerical control engraving, numerical control mechanical arm processing and 3D printing processing. However, there are certain problems in the current processing methods. The sand table of the real-world topographic map made by hand has a large scale error and distortion. It can only be used for topographic display, and its application is limited to a certain extent. [0003] Computer numerical control engraving is to use computer...

AI Technical Summary

Problems solved by technology

Due to manual modeling, only sand table terrain processing with a ratio close to the real scene can be realized. However, due to the limitation of the processing equipment stroke and cutting tool, the general CNC engraving tool is a sharp carving knife, which can guarantee the processing accuracy. However, due to the small size of the tip of the sharp knife, a On the one hand, the tool is easy to be damaged during the processing, on the other hand, the line spacing of the processing parameters must be set very small, generally the maximum is 0.1mm, so the processing time will be very long

There is also a ball cutter used in processing, but due to the limitation of the length of the cutter bar, it can process topographic maps with a maximum drop of 60mm, and cannot process sand tables with a larger drop.

[0004] The CNC robotic arm is a special equipment, which is also limited by the processing tool, the processing time is long, and the processing cost is expensive. Because of the cost of special equipment, it is difficult to promote

[0005] 3D printing can also realize the processing of real terrain sand table, but the cost of consumables is high and the processing time is long. After testing, compared with CNC engraving, the processing time is at least 10 times longer, which has great limitations in the application of real terrain sand table processing sex

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