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Additive manufacturing path planning algorithm based on double laser heads

A path planning and additive manufacturing technology, applied in computing, genetic models, genetic laws, etc., can solve problems such as the inability to effectively increase printing speed, improve printing efficiency and printing quality, reduce the accumulation of printing sharp corners, and reduce printing time. Effect

Pending Publication Date: 2021-10-08
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of printer does not work with two print nozzles at the same time. To a certain extent, it can improve the stability of the whole machine and improve the printing accuracy, but it cannot effectively increase the printing speed.

Method used

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  • Additive manufacturing path planning algorithm based on double laser heads
  • Additive manufacturing path planning algorithm based on double laser heads
  • Additive manufacturing path planning algorithm based on double laser heads

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Experimental program
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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0029] The flow chart of path planning of the present invention is as figure 1 As shown, the specific steps are as follows:

[0030] Step1: Preprocessing work and calculation of model partitions

[0031] According to the model that needs to be printed by additive manufacturing, a 3D simulation model is established, and the 3D simulation model is sliced. For each two-dimensional slice surface, its outline is output as a sequential point set and stored in an excel file. Taking one layer as an example, the model partition process is as follows:

[0032] The first step is to traverse the polygonal vertices of the two-dimensional sliced ​​surface contour and store them in the point set to establish a concave point string. Take the vertices from the polygon point set in turn, judge whether it is a concave poin...

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Abstract

The invention belongs to the field of artificial intelligence and 3D printing, and relates to an additive manufacturing path planning algorithm based on double laser heads. The algorithm comprises the steps: partitioning a two-dimensional contour obtained after a three-dimensional model is sliced by adopting a polygon convex decomposition algorithm based on global subdivision, and then selecting a parallel line scanning method in each sub-partition for filling; finally, regarding an original traveling salesman problem as a multi-traveling salesman problem to connect sub-partition paths to realize a partition connection algorithm based on double laser heads, obtaining a simulation result of path planning, and finally completing a printing process. According to the method, the printing paths can be effectively and uniformly distributed to the two printing heads, meanwhile, the ascending and descending times of the printing heads and the idle travel of the printing heads can be effectively reduced through a partition algorithm based on polygon convex decomposition, and the purposes of effectively reducing the printing time and improving the printing efficiency and the printing quality can be achieved.

Description

technical field [0001] The invention belongs to the field of artificial intelligence and 3D printing, and designs a path planning algorithm for additive manufacturing based on dual laser heads. Background technique [0002] The main process of additive manufacturing is to slice the part model according to a certain thickness, then plan the path of each layer of the slice and import it to the printer for printing, and finally shape it into the required parts. The most important link in the printing process is the planning and design of the printing path. The quality of the printing path determines the printing quality and also affects the printing speed and the amount of printing consumables. Now common path planning methods include parallel scanning method, contour offset method, helical scanning method and so on. For the path planning algorithm for additive manufacturing of large metal parts, the parallel scanning method is commonly used. This method is relatively mature, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06N3/12G06F30/20G06F113/10
CPCG06Q10/047G06N3/126G06F30/20G06F2113/10
Inventor 崔紫微王祎范永刚王胜法
Owner DALIAN UNIV OF TECH