基于加工特征的复合快速成形技术研究

Machining Features Based Hybrid Rapid Prototyping

结合分层制造和数控加工的技术优势,提出了一种以六轴并联机床为切削加工平台、基于加工特征的复合快速成形方法。利用Parasolid modeling kernel开发了具有加工特征提取与消除、分层处理等功能的数据处理软件系统。以顶针座零件为对象进行了原型制作实验,整个制作过程需要8h,制作精度为0.05mm,与SLA方法相比具有较高的成形效率和精度。

A new method for hybrid rapid prototyping, which combines the advantages oi the layered manufacturing and CNC machining, was proposed herein. This method used a six--axis parallel machine tool as the machining platform and adopted machining feature based process. Besides,a method for development of the data processing software system based on Parasolid was also discussed, which had the functions of machining feature extraction/filling and part decomposition. To verify the feasibility of the approaches, a prototyping experiment was done using a tailstock, and the manufacturing time is 8h with the accuracy of 0.05mm. Experimental results indicate that the method is more efficient and more precise than that of SLA process.