The manufacturing process of Rapid prototyping in Shandong is a production process based on the principle of material accumulation. This process is to obtain a planned path and limiting mode for material stacking, by stacking or fusing materials together to form a three-dimensional solid. The whole process of Rapid prototyping manufacturing process can be summarized into the following three steps:
1) Pre processing. This includes the construction of 3D models, triangulation of models, and slicing of models.
3D CAD modeling is built by computer software, and 2D Engineering drawing is converted to 3D model, or point cloud data such as optical scanning and CT data from solid model.
For free form surfaces containing irregular types, necessary processing should be made to the model before processing. STL format is a general interface file in current Rapid prototyping technology. Using a large number of triangular facets to approximate the original model and adjust accuracy.
Select an appropriate processing direction based on the shape characteristics of the parts to be manufactured, and cut the model along the height direction of the molding using a large number of planes with specific intervals to complete the contour information extraction of these sections. The denser the spacing used, the higher the machining accuracy obtained.
2) Layered overlay forming. Including the formation and overlapping of contour sections of 3D models.
This step is the core of Rapid prototyping technology. Under the control of the central control unit, the corresponding material outlet device performs point-to-point scanning motion based on the cross-sectional information processed by slicing, stacking and forming materials layer by layer on the workbench, and bonding each layer of materials to form a three-dimensional solid.
3) Processing. This includes the separation, solidification, and surface treatment of entities.
After the Rapid prototyping process is laminated into 3D solids, the separation and other post-processing tasks should be completed to remove waste and support. For parts with lower structural strength that are formed by UV curing, further UV curing treatment should be used. Remove the formed solid parts from the workbench and perform necessary polishing, polishing, or sintering in a high-temperature furnace to improve their hardness and strength.
This is the end of the basic principles and steps of Rapid prototyping manufacturing process. I hope to give you some help. More information can be found on our website http://www.nanxiaolu.cn Consult!