熔融沉积快速成型3D打印精度影响因素的研究

Research on the Influencing Factors of FDM 3D Dot Per Inch

打印精度是熔融沉积快速成型3D打印普遍关注的问题,以聚乳酸材质的长方形制件为例,研究了底部/顶部厚度、填充密度和摆放位置对打印制件尺寸精度的影响。研究结果表明打印后制件产生收缩,其收缩具有一定的方向性,沿打印机X方向收缩量最小。根据实验数据拟合出的长度尺寸、宽度尺寸和高度尺寸的算式,对快速获得正确的零件尺寸具有一定的指导意义。

DPI is a common concern in 3D printing of FDM.Taking the rectangular part made of PLA as an example,the effects of bottom or top thickness,filling density and placement position on the dimensional accuracy of the printed part were studied.The research results show that the parts shrink after printing,and the shrinkage has a certain directionality,and the shrinkage is the smallest along the X direction of the printer.According to the experimental data,the formulas of length dimension,width dimension and height dimension are fitted,which has a certain guiding significance to quickly obtain the correct part dimension.