叠层实体原型件的误差分析及改进措施

Error Analysis of Laminated Object Prototype and Improvement

叠层实体制造技术是利用计算机接收和存储工件的三维模型,沿高度方向提取一系列的横截面轮廓线,根据每个层片的轮廓信息,输入加工参数,再由快速成型机把层片自动连接起来,得到三维原型。本文针对叠层实体制造工艺中的成型前处理、叠加成型过程、后处理三方面因素,分析了叠层实体原型件在制造过程中所产生的误差因素,从而提出了修正叠层实体件误差的改进措施,进一步提高了制件的精度。

Laminated object manufacturing technique is to use a computer for receiving and saving 3D model of the components, withdraw a series of outline lines of horizontal cross section along the height direction, input the process parameters accorcling to the outline information of each layer, and obtain a 3D model by linking the layer automatically using rapid prototyping. The error of prototype for laminated object manufacturingwas analyzed from three factors during the manufacturing： processing before modeling, Laminated modeling process and processing after modeling, the modified measures for correcting error of laminated object are proposed and thus further increases the accuracy of laminated object.