In view of the forming accuracy problems such as dimensional shrinkage and warping deformation of the parts in the mask exposal stereolithography process,a specimen of 60 mm×60 mm×20 mm was manufactured.The layer thickness,modeling style and construction angle were taken as the test factors.The part size,roundness and flatness were taken as test indexes.The orthogonal test method was used to analyze the influences of test factors on the forming accuracy of the parts.The results show that the modeling style is the most important factor affecting the dimensional accuracy and the construction angle is the most important factor affecting the geometric shape accuracy.In general,with the increase of the layer thickness,the forming errors gradually increase.As the modeling style changes from rough(Draft)to fine(Premium),the molding errors gradually decrease.With the increase of the construction angle,the forming errors decrease first and then increase.Through the range analysis,the optimal combination of process parameters is comprised of a layer thickness of 30 μm,a modeling style named Premium,and a construction angle of 15°.The optimized process parameters could improve the forming accuracy of the mask exposal stereolithography 3D printing parts.
关键词
面成型光固化/三维打印制件/成型精度/正交试验/工艺参数优化
Key words
Mask Exposal Stereolithography/3D-Printed Part/Molding Accuracy/Orthogonal Test/Optimization of Process Parameter
维普
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