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为提高面曝光快速成形系统Z向微细结构的制作精度,采用正交试验的方差、极差分析方法,讨论分层厚度、曝光时间、树脂温度、液面等待时间等成形工艺参数对过固化深度的影响。研究结果表明:分层厚度、单层曝光时间对过固化深度有显著影响,树脂温度对过固化深度有一定影响,液面等待时间对过固化深度影响不显著。针对面曝光快速成形系统,得出了以减小过固化深度为优化目标的制作参数的最佳组合。试验结果表明:在最佳的制作工艺参数条件下,过固化程度明显减小。试验结果对于面曝光快速成形减小过固化深度,提高Z向精度有指导意义。
In order to improve the fabrication precision of the z-direction micro-structure of the surface-forming rapid prototyping system, orthogonal test variance and range analysis method were used to discuss the effect of forming process parameters such as layer thickness, exposure time, resin temperature and liquid surface waiting time on over- Impact. The results show that the delamination thickness and single-layer exposure time have a significant effect on the over-cure depth, the resin temperature has an influence on the over-cure depth, and the liquid-level wait time has no significant effect on the over-cure depth. For the rapid prototyping system of surface exposure, the best combination of fabrication parameters with the goal of reducing the over-cure depth is obtained. The experimental results show that the degree of over-solidification is obviously reduced under the optimum manufacturing process parameters. The test results are of guiding significance for rapid prototyping of surface exposure to reduce the depth of over solidification and improve the accuracy of Z direction.