Study on the effect of layer thickness and model bottom angle on the quality of FDM surface molding
Contour surface roughness is a key factor affecting the quality of fused deposition molding(FDM)model,in order to reveal the mechanism and law of the influence of layer thickness and model bottom angle on the roughness,the FDM molding mechanism,software slicing algorithm,and the actual working con-ditions of the hardware are analyzed,and a mathematical model is constructed to study the vertical linear con-tour and inclined linear contour.According to the FDM molding mechanism,mathematical expressions are es-tablished,and MATLAB software is used for operation and analysis to study the influence of two parameters,namely,layer thickness and model bottom angle,on the surface roughness of molded parts.In order to verify the validity of the mathematical model,a two-factor three-level orthogonal test is designed,and it is found that the surface quality of the molded part is best when the layer thickness takes the minimum value and the model bottom angle takes the maximum value through the super depth-of-field microscope.This is consistent with the simulation results.The conclusion of the study points out the direction for improving the surface roughness,and also provides a theoretical basis for the optimization of the process parameters of the actual molded parts.
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维普
