3D打印双点渐进成形支撑模具的可行性

目的为了更快速、简单、有效地完成双点渐进成形加工中支撑模具的加工。方法采用3D打印设备完成支撑模具加工,用加工完成的模具作为支撑,通过板料渐进成形技术对1 mm厚的铝板进行成形,选取8个标本点测量工件的壁厚,并与普通模具完成的零件进行比较,再对3D模具成形的工件进行成形精度分析。结果通过实验数据分析,板料壁厚变化完全符合正弦定律,计算出的理论轮廓与实际轮廓的成形精度偏差绝对值算术平均值基本符合生产要求。结论这种与3D打印技术相结合的双点渐进成形加工工艺完全可行,与普通模具相比节省了模具加工经费,降低了渐进成形加工的时间。

Feasibility of Two-Point Incremental Forming Mould in 3D Printing

The paper aims to complete processing of supporting mould in two-point incremental forming rapidly, fast and effectively. A 3D printing equipment was adopted for mould processing. Moulds processed were taken as support to form 1mm thick aluminum plates through incremental forming of sheet metal. Eight specimen points were selected to measure the wall thickness of the workpiece and compared with parts completed with ordinary moulds. Then the forming precision of the workpiece formed by 3D mould was analyzed. Through analysis of experimental data, variation of plate wall thickness was completely in accordance with the sine law, and the arithmetic mean of the absolute value of the forming precision of the theoretical contour and the actual contour was basically in line with the production requirements. The two-point incremental forming process which is combined with the 3D printing technology is fully feasible. Compared with the conventional mould, this method saves the cost of mould processing and reduces the time of incremental forming.