| Summary: | 碩士 === 國立臺北科技大學 === 機電整合研究所 === 96 === The purpose of this research is to develop an innovative paving system, which is used in rapid prototyping equipment for the process of ceramic laser sintering. The existing feeding device, which has the problem of water infiltrating into green block before layer paving, can be improved; the time-taken of the part fabrication can be shorten, and the waste of the slurry can be reduced. Furthermore, the apparatus and process parameters of the Ceramic Laser Gelling were developed to fabricate ceramic part.
The first part of current study involves the design and testifying for a slurry circulation system. The second part discusses the design principle of a distributor and the parameters of this distributor. Eventually, the slurry distributor will be integrated into a paving device to form a new layer paving system which can feed slurry and pave a layer simultaneously. The new system can prevent the green portion from un-uniform density and shorten the time-taken for part fabrication. An equation was developed to describe the relationship between the rates of slurry delivery and pump speed. Based on the descending distance of the Z-axis, the required volume of the slurry can be obtained, and the pump speed can be determined from the equation. The result can be transferred to the system control program to achieve an optimal slurry delivery and to minimize the waste of the slurry.
Regarding the paving system, the process of ceramic laser gelling is much different from other processes; therefore, the apparatus has to be redesign and manufactured. Using the new self-made apparatus, the laser scanning parameters and supports fabrication parameters were studied. The results were employed to fabricate ceramic part.
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