薄壳类零件的快速成型精度工艺

对于光固化法的快速成型技术,零件精度与零件的大小、结构特点有直接关系,与零件的复杂程度关系不大.而对于同样的零件,不同的成型工艺将得到不同的表面形貌和尺寸精度.选择典型的薄壳外饰件在不同零件摆放角度、不同支撑条件下进行实验,比较研究成型精度与成型时间;建立简化模型,在最优摆放角度条件下,研究了不同支撑的薄片和薄板的翘曲变形,提出了提高薄壳零件快速成型精度的工艺.具体的零件验证工艺的正确性.

Technology of the Rapid Prototyping Manufacturing Precision of Thin-shell Part

To the photo-solidification rapid prototyping technology, the precision of parts relate directly to their size and structural characteristics, not to their complexity. However, variant prototyping processes bring about variant surface shapes and dimension precisions. The authors compare its prototyping precision and prototyping time by testing a thin-shell exterior trimming part at variant laying angles and under variant bracing conditions. And then reduced model is founded, warping deformation of variant bracing diaphragms and sheet metals at optima laying angle are surveyed, finally the process to upraise the rapid prototyping precision of the thin shell parts is set up. Experiments are then done to test the process.