Five Standard Classification in International CNC Shouban Model Making
RP rapid prototyping technology in the international CNC Shouban model production of the five standard classification.
Rapid prototyping (RP) is an innovative technology that can produce complex parts directly in a few hours using 3D CAD designs. (LOM), powder sintering rapid prototyping (SLS hand plate), melt melting method rapid prototyping (FDM) and 3D printing technology.
Fused deposition method (FDM): FDM method was invented in 1988. Sprinkler in the nozzle of the molten material in the X-Y table driven, according to the cross-sectional shape on the floor, a layer of processing, and ultimately manufacture parts. Commercial FDM equipment uses a wide range of materials, such as casting paraffin, nylon, thermoplastics, ABS and so on. In addition, to improve efficiency can use multiple nozzles.
LaseStereo light curing (SLA): SLA method is the earliest commercialization, the highest market share of RP technology, it is photosensitive resin as raw material, computer controlled UV laser parts by the layered cross-section information in the photosensitive resin surface point by point scan, So that the resin layer of the scanned area is photopolymerized and solidified to form a thin layer of the part. After a layer of curing, the table down a layer of thick distance, so that the original solidified resin surface and then apply a layer of new liquid resin, and then can be the next layer of scanning processing. The newly cured layer is firmly adhered to the previous layer, so repeatedly until the entire prototype is finished.
Laser Sintering (SLS): SLS method uses infrared laser for energy, the use of modeling materials are mostly powder material. In the process of processing, the powder is preheated to a temperature slightly below its melting point and then the powder is paved by the action of the flattened stick. The laser beam is selectively sintered under the control of the layered section under the control of the computer. And then the next layer of sintering, all sintering finished after removing the excess powder, you can get a sintered parts. At present the mature process materials for the wax powder and plastic powder, with metal powder or ceramic powder sintering process is still being studied.
LOM: LOM appears in 1985. First, the substrate is covered with a layer of foil (such as paper), and then use a certain power of the infrared laser in the computer under the control of the layered information cut out the contours, while non-part of the grid part of the grid cut into pieces Remove, after processing a layer, and then covered with a layer of foil, with a hot roller rolling, so that the new layer of a layer of adhesive in the role of adhesive has been molded in the body, and then cut the shape of the layer, So repeatedly until finished processing. Finally, remove the excess part of the chopped, you can get a complete part.Since the first rapid prototyping system in 1988, more than twenty systems have been developed, and each system has some small differences. Initially, these systems were used in the automotive and aerospace sectors and were used in many other areas, such as toys, computers, jewelery and medicine.