1.绪言在砂型造型机中,震击、挤压或两者组合方式的造型机较多。震击造型机型砂紧实虽然好,但产生振动和噪音,挤压造型机虽无振动和噪音,却存在铸型深处的型砂紧实不好的问题。为此,迫切希望没有这两者的缺点的造型机出现,虽然研究它是可能的,不过完善的造型机还没有被研制出来。日本千千岩健儿等人到目前为止,针对型砂的紧实机构进行了研究,利用振动使砂 1. INTRODUCTION In the sand molding machine, shock molding, extrusion or a combination of both the molding machine more. Shock Molding Machine Although the sand compacting is good, it produces vibration and noise. Although there is no vibration and noises in the extrusion molding machine, there is a problem that the molding sand in the mold is badly compacted. For this reason, there is an urgent need for a molding machine without the disadvantages of both, although it is possible to study it, however, a perfect molding machine has not yet been developed. Japan’s Chiaki Yan Kin children, etc. so far, compact structure for the sand were studied, the use of vibration sand