基于三维打印的型孔排种轮制造技术

型孔排种轮是机械式排种器的核心部件，利用传统方法加工不规则型孔很难满足精度和成本的要求。三维打印（3DP）技术不同于传统加工方法，其是从零件的CAD模型出发，直接打印出物理实体。本文运用三维软件Pro/E对型孔排种轮进行建模，把模型文件导入三维打印机前处理软件内进行分层处理，并通过三维打印机打印出物理实体。三维打印技术缩短了试制时间，并且不受零件复杂程度的限制，制造出的型孔排种轮加工精度满足要求，该技术在复杂农机产品设计与制造中应用前景广阔。

Manufacture of type holes wheel based on three dimensional printing technology

Type holes wheel is a core component of mechanical seed metering device, traditional manufacture method for the irregular type holes can not meet the requirements of accuracy and cost. Three dimensional printing (3DP) technology is different from the traditional manufacture method. The physical entity can be directly printed out by 3-D printer from the CAD model. Type holes wheel was modeled by the three-dimensional software Pro/E, and the model file was imported into 3D printer after converted by the pre-processing software. With three-dimensional printing technology, the type holes wheel can meet accuracy requirement, reduce the trial time, which were restricted by the complexity parts before. Three dimensional printing (3DP) technology can be applied in the design and manufacture of complexity and important agricultural products.