基于CNC的自适应直接分层制造方法研究

Study on the Method of CNC-based Laminated Object Manufacturing of Adaptive Direct Slicing

将RP技术的增材制造理念与数控铣削加工技术相结合,提出了基于CNC机床的金属零件分层制造方法。为解决等厚分层方法存在的缺陷,提出了基于相邻层面积变化比率和轮廓法向矢量的自适应直接分层算法,并在Pro/E软件平台上,利用Pro/TOOLKIT进行了系统的开发。该方法采用定厚板材作为造型材料,在等厚分层的基础上对分层板进行自适应分层切削,有利于保证成型精度和提高成型效率,为复杂形面功能零件的快速成型制造提供了一种有效的方法。

This paper presents the method of CNC - based laminated object manufacturing of metallic functional parts by combining the manufacturing idea of RP and the cutting technology of CNC machine. For resolving the compromising issue of traditional uniform slicing, this paper presents an adaptive direct slicing algorithm that bases on the area change and normal vector of slicing sections, and uses Pro/TOOLKIT to implement this algorithm in the Pro/E environment. This method is that the uniform slabs are become modeling materials, and that the slicing slabs are cut by adaptive slicing. It is propitious to assure the prototyping precision and to increase the prototyping efficiency, and offers an efficient method for rapid prototyping manufacturing of metallic functional parts of complicated surfaces.