航天大型铝合金壳体树脂砂铸型快速制造单元设计研究

Research on Rapid Prototyping Unit Design of Resin Bonded Sand Mold for Aerospace Large-Scale Aluminum Alloy Castings

以航天大型铝合金壳体为对象,基于自硬树脂砂低压铸造工艺特点,进行树脂砂快速造型单元设计研究。通过将叠箱造型工艺优化为分箱底板造型工艺,实现上、中、下各箱同步造型,提升造型效率;将铸型制造工序分解为5种工位,精确设计工位布置和数量,形成高效率自循环的造型单元;通过综合造型单元构建技术研究,在同等条件下单个产品的树脂砂铸型生产效率提升3倍以上,铸型紧实度均匀性提升50%以上,铸型连续生产的效果提升更加明显。

Based on the low pressure casting process characteristics of self-hardening resin bonded sand, the design of resin bonded sand rapid moulding unit was studied. By optimizing the moulding process of stacked box into the moulding process of sub-box bottom plate, the simultaneous moulding of upper, middle and lower boxes can be realized, and the moulding efficiency can be improved. The mould|ing process can be divided into five kinds of workplaces, and the layout and quantity of workplaces can be accurately designed to form the moulding unit with high efficiency and self-circulation. The resin bonded sand moulding production of single product under the same conditions can be achieved by the research of the construction technology of integrated mould. The efficiency is increased more than three times, the uniformity of compactness is increased by more than 50%, and the effect of continuous casting production is more obvious.