Green sand castingcasting clay weight from a few kilograms until decades kilograms, machine tool lathe bed and clay dry type of casting production can be weighed dozens of tons.
粘土湿型砂铸造的铸件重量可从几公斤直到几十公斤，机床床身而粘土干型生产的铸件可重达几十吨。
2
The manufacturing method, dynamic characteristics analysis and the comparison with casting machine bed are described in the paper.
介绍了聚合物混凝土机床床身的制造方法、 动态特性，以及与铸铁机床床身的优劣比较与分析。
3
Based on the casting process of bed, the actual lathe work condition, stiff and inherent frequency, we discuss feasibility of each plan.