CN106825563A - Increasing material manufacturing model treatment system - Google Patents

Abstract

The invention discloses an additive manufacturing model processing system, comprising: a user operation display interface, a model loading module, a layered slicing module, a layer display module, a path planning module and a processing instruction output module. The user operation display interface includes an input module and a layer display interface. The parameter values are set and modified through the input module. The model loading module is used to read the model data and perform topological processing on the model data according to the parameter values read from the input module. , the hierarchical slicing module performs hierarchical slicing processing on the model loaded by the model loading module according to the parameter values read from the input module to obtain the contour data of each layer, and the layered slice display module is used to convert the result data of the layered slicing module Sent to the layer display interface on the user operation display interface. The additive manufacturing model processing system of the present invention has the advantages of high efficiency of layered slicing, good reliability, high precision and good quality of additive manufacturing, and the like.

Description

Additive Manufacturing Model Handling System

technical field

The invention belongs to the technical field of arc additive manufacturing, and in particular relates to a model processing system for additive manufacturing.

Background technique

At present, the research on the additive manufacturing process of low-cost and high-quality metal materials has become a hot topic at home and abroad. According to the high-energy beam heat source, it can be divided into arc additive manufacturing, laser additive manufacturing, electron beam additive manufacturing and other technologies. Raw materials There are generally two forms of metal powder and welding wire. Arc welding additive manufacturing technology (WAAM) is a kind of welding machine that uses the principle of layer-by-layer cladding, using molten inert gas shielded welding (MIG), tungsten inert gas shielded welding (TIG) and plasma welding power supply (PA) The generated electric arc is the heat source. Through the addition of wire, under the control of the program, the advanced digital manufacturing technology of gradually forming metal parts from line-surface-body according to the three-dimensional digital model has high deposition efficiency and high wire utilization. ; The overall manufacturing cycle is short and the cost is low; there are few restrictions on the size of the parts;

The additive manufacturing system is the soul of the additive manufacturing technology, the most critical of which is the interface from the part model to the additive manufacturing technology, that is, the data conversion and model processing system of the additive manufacturing machine. Currently. The research and development of the additive manufacturing system based on the part model mainly has three parts: the part model acquisition system, the model processing system and the monitoring system. The part model acquisition system is responsible for describing the geometric shape and geometric features of the part; the model processing system is responsible for space transformation, selection of processing direction, model layering, section profile data processing and scanning path planning (two-dimensional profile offset and filling grid ), etc.; the monitoring system is responsible for the input of layered information in the additive manufacturing process, parameter setting and online quality inspection, etc. In the software system of additive manufacturing, the part model acquisition system can adopt the existing CAD system on the market or develop related systems by itself, while the model processing system and monitoring system need to be developed by the additive manufacturing system manufacturer.

At present, there are many deficiencies in the additive manufacturing system at home and abroad, mainly in the following four aspects:

(1) There is no standardization of additive manufacturing systems. The vast majority of additive manufacturing systems still have the typical characteristics of the early stage of technology. Most of them are installed with equipment and rely on equipment. Exchanging data between additive manufacturing systems is very difficult.

(2) The secondary development of the additive manufacturing system is difficult. The current additive manufacturing system can only be installed on fixed equipment, which is relatively closed and has no unified data interface. Users cannot carry out secondary development of the technology according to their own specific requirements, and cannot integrate different processes.

(3) Due to the difficulty and relative independence of the development of the interface system between the part model and additive manufacturing, sometimes a third-party data exchange interface system is required to act as a bridge.

(4) It is expensive and has insufficient functions. The additive manufacturing systems provided by professional developers of additive manufacturing systems are very expensive, and are limited to model processing modules. Most of them only have basic functions such as model display, slicing, and path planning, and subsequent functions such as CNC processing and online quality inspection. The user needs to solve it by himself.

Contents of the invention

The technical problem solved by the present invention is to provide an additive manufacturing model processing system, which includes a good user-friendly interface, can be used to quickly and stably process the additive manufacturing model, and output the instruction file of the processing end.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a model processing system for additive manufacturing, including: a user operation display interface, a model loading module, a layered slicing module, a layer display module, and a path planning module And processing instruction output module. The user operation display interface includes an input module and a layer display interface. The parameter values are set and modified through the input module. The model loading module is used to read the model data and perform topological processing on the model data according to the parameter values read from the input module. , the hierarchical slicing module performs hierarchical slicing processing on the model loaded by the model loading module according to the parameter values read from the input module to obtain the contour data of each layer, and the layered slice display module is used to convert the result data of the layered slicing module It is transmitted to the ply display interface on the user operation display interface, the path planning interface is used to scan and fill the ply outline obtained by the layered slicing module, and generate a processing path, and the processing instruction output module is used to generate the path planning module The processing path is converted into a processing end command and the command file is output.

Further, the path planning module includes a partitioning module and a scanning and filling module.

Further, the partition division module can divide the layer profile obtained by the layer slice module into multiple independent parts that are not connected to each other.

Further, the scanning and filling module includes two methods: rectilinear reciprocating scanning and filling and contour offset scanning and filling. Different methods can be adopted according to the different shapes of multiple independent parts in the ply contour obtained by the partitioning module.

Compared with the prior art, the present invention has significant advantages:

1. Through the calculation of model topology information, the efficiency of layered slicing of the model is improved; 2. By adding a layer slice display module, users can judge the layering effect in advance and reduce follow-up meaningless labor caused by poor layering quality. Improve the reliability of the system and the efficiency of additive manufacturing; 3. Divide the ply profile into multiple independent parts that are not connected to each other, and plan the paths of these independent part profiles to prevent unnecessary redundant motion paths, or Because of the confusion of the processing sequence, the collision accident of the processing head occurs; 4. By providing different scanning and filling methods for different types of layer contours, the accuracy of the model and the quality of additive manufacturing are improved.

Description of drawings

Fig. 1 is a functional block diagram of the additive manufacturing model processing system of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example

A model processing system for additive manufacturing, comprising: a user operation display interface 1, a model loading module 2, a layer slicing module 3, a layer display module 4, a path planning module 5 and a processing instruction output module 6.

The user operation display interface 1 includes an input module and a ply display interface, wherein the input module is used for inputting setting and modifying parameter values, and the ply display interface is used for displaying the ply profile data transmitted from the ply display module 4 . The model loading module 2 is used to read the geometric information data of the loaded model, and perform topology calculation on the read model data according to the parameter values read from the input module, and the hierarchical slicing module 3 according to the parameters read from the input module Slice the model loaded by the model loading module to obtain the slice contour data, and optimize the slice contour data, the slice display module transmits the slice contour data to the slice display interface, and the path planning module 5 layers The chip contour data is scanned and filled, and the processing path is generated. The processing instruction output module 6 converts the processing path into a processing end control instruction and outputs the instruction file.

The path planning module 5 includes a partitioning module and a scanning and filling module. The partition division module can divide the layer profile obtained by the layer slice module into multiple independent parts that are not connected to each other. The scanning and filling module includes two methods: linear reciprocating scanning and filling and contour offset scanning and filling. Different methods can be used according to the different shapes of multiple independent parts in the ply contour obtained by the partitioning module.

The processing instruction module 6 also includes a function of setting arc welding process parameters, and can combine the arc welding process parameters into the processing path.

The above descriptions are only examples of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description of the present invention, or directly or indirectly used in other related technical fields, shall be The same reasoning is included in the patent protection scope of the present invention.

Claims (3)

1. A model processing system for additive manufacturing, comprising: a user operation display interface, a model loading module, a layered slicing module, a layer display module, a path planning module and a processing instruction output module; the user operation The display interface includes an input module and a ply display interface. The parameter values are set and modified through the input module, and the model loading module is used to read the model data, and process the model data according to the parameter values read from the input module. Topological processing, the layered slicing module performs layered slicing processing on the model loaded by the model loading module according to the parameter values read from the input module to obtain the contour data of each layer, and the layer display module is used to The result data of the layer slicing module is sent to the layer display interface on the user operation display interface, and the path planning interface is used to scan and fill the layer outline obtained by the layer slicing module, and generate a processing path, and the processing instruction The output module is used to convert the processing path generated by the path planning module into the processing end instruction and output the instruction file. 2. The additive manufacturing model processing system according to claim 1, wherein the path planning module includes a partitioning module and a scanning and filling module; the partitioning module is used for the layers obtained by the layered slicing module The contour is divided into multiple independent parts that are not connected to each other; the scanning and filling module is used to fill the multiple independent parts that are not connected to each other in the layer contour obtained by the partitioning module through different methods. 3. The additive manufacturing model processing system according to claim 2, wherein the scanning and filling module includes two methods: linear reciprocating scanning and filling and contour offset scanning and filling.