| In these days, molding materials is getting more mature increasingly. For ceramic materials'good qualities, such as high temperature resistance, corrosion resistance, high strength, and great hardness, ceramic direct molding has become one of the research focus and developments in rapid prototyping technology. The rapid prototyping technology (RP) of ceramic parts is still at starting stage at home and abroad, and most of the existing technology and equipments have defects, including high cost, material with high quality performance and products being poor quality, there has not been a rapid prototyping device dedicated to ceramic parts production. However, to solve the above problems, Shaanxi University of Science and Technology proposed the technology of laminated speed cemented to product ceramic parts. The topic was based on the theory, and combined with the characteristics of ceramic materials and paraffin to design a new kind rapid prototyping device for ceramic parts. The device is suitable for rapid prototyping manufacturing that takes ceramic as the molding materials and paraffin wax as support and bonding materials. The device coordinated with the woodpecker carving machine DX3017to process the products with excellent physical and chemical properties, and species richness, which achieved the great agreement from the domestic industry experts, government leaders and consumers. The successful development of the device has filled the domestic blank, and reached the international advanced technical level, which is with great value in industrial applications.The process of ceramic parts rapid prototyping machine was on the basis of laminated cemented speed modeling, the processing steps were as follow:Firstly, three-dimensional solid model of the parts was established with Pro/E, and then was stratified by layered software so that it became pieces of two-dimensional cross-sectional profile, all of the data was transmitted to the machine tools to guide modeling movement. Secondly, the ceramic slurry and paraffin slurry were filled in hoopers respectively, and then the heating device and the stirring device were turned on simultaneously. Thidly, a layer of paraffin was paved on the paving plattform, after paraffin solidified, the computer issued a directive to control graver carving the part's section shape in paraffin board, and the paraffin wax debris was blown away by the blowing device to empty hollow part out. A layer of ceramic slurry was paved on it, and the excess slurry was scraped away by scraper, the hollow part was filled with ceramic slurry. Repeating the above steps, and overlapping layer by layer, an entity was formed. Finally the entity was taken out for wax removal and sintering to obtain the ceramic parts.The creative achievements in the paper are as follow:Based on laminated quick-setting and combined with rapid prototyping principle, the whole mechanical structure of the rapid prototyping equipment for ceramic parts was designed, calculated and picked up, so that it was determined at last.The three-dimensional models of the michaical structure were established to assemble in Pro/E, and the motor parameters of the device were set to realize the device's three-dimensional simulation. The real course of the campaign was seen through the simulation, and it can check whether the design is reasonable on the baisis of analysis. Finite element analysis software ANSYS was used to analyze the deformation of paving platform in the process. Through the analysis, it was found that a certain degree of deformation was occurred on the platform, which would influence ceramic parts machining accuracy at some degree. On the basis of the analysis, the platform's structural was improved, and analyzed again to meet the design requirements.The control system of the rapid prototyping equipment for ceramic parts adopted the plan of "IPC+PMAC". Compaired with several kinds of open CNC systems and based on the control requirements of ceramic parts rapid prototyping machine, the control program of "IPC+PMAC" was proposed, togethering with AC servo control system, the control system of ceramic parts rapid prototyping was set up. The electrical drive components of the system were calculated to pick up, including spindle inverters, AC servo drives, AC servo motor. And the connection diagram of the hardware system was completed. The control performance of AC servo system was affected the machining accuracy greatly, therefore, this paper establishes a mathematical model of the AC servo control system, on the basis of classical control theory, the Matlab/SIMULINK was adopted to do PID simulation analysis for feed AC servo control system, and the system response curve&the steady-state error were obtained,. In order to get better performance PEWIN software was used to make debugging simulatin for system.The numerical control system software portion of the ceramic parts rapid prototyping machine was build, a modular design ideas was used to analyse the program upload and download, system PMAC interpolation module, the PMAC's PLC and data acquisition.Combined with the existing control system hardware, an alternative control scheme was proposed:adopting Siemens S7-200PLC to design the control system of the device. The control scheme was easy to realize the control requirements and successfully achieved the processing motion. The ceramic rapid prototyping machine prototype has been successfully developed, from the results of debugging and running the experimental, it was available to find that the management and control tasks of the entire system can work well and stable, and calibration with great machining accuracy, which all have meet the requirements and achieved the desired results.95Al2O3ceramic cams were processed by the rapid prototyping device and the sample's performance was tested. SEM microstructure showed that:section particles were uniform grain size was about in4μm and short column. Layer gap has disappeared, the sample sintered as a whole, and with toughening effect. SEM microstructure of one forming of the95Al2O3ceramic sample showed that: the grain distributed uniformly and took on in short column, was about in3μm; after related performance tests, the sample prepared by rapid prototyping equipment performance slightly worse than one forming of the95Al2O3ceramic sample, however the difference was hardly. Therefore, using rapid prototyping equipment to process ceramic components is available.There are a lot of inadequacies in the process of re-processing for the prototype experiment:the security and stability of the prototype machine need to be improved; processing efficiency needs to be optimized; the function of working with engraving machine need to be improved, data transmission needs to be improved and so on.
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